diff -r 1615c7e4ef9d -r 9521347ede1d src/js/libs/renkan.js
--- a/src/js/libs/renkan.js	Tue Apr 23 15:23:20 2013 +0200
+++ b/src/js/libs/renkan.js	Wed May 15 15:35:15 2013 +0200
@@ -1,3232 +1,3306 @@
-/* 
- *  Copyright 2012-2013 Institut de recherche et d'innovation 
- *  contributor(s) : Yves-Marie Haussonne, Raphael Velt, Samuel Huron
- *   
- *  contact@iri.centrepompidou.fr
- *  http://www.iri.centrepompidou.fr 
- *   
- *  This software is a computer program whose purpose is to show and add annotations on a video .
- *  This software is governed by the CeCILL-C license under French law and
- *  abiding by the rules of distribution of free software. You can  use, 
- *  modify and/ or redistribute the software under the terms of the CeCILL-C
- *  license as circulated by CEA, CNRS and INRIA at the following URL
- *  "http://www.cecill.info". 
- *  
- *  The fact that you are presently reading this means that you have had
- *  knowledge of the CeCILL-C license and that you accept its terms.
-*/
-
-/* Declaring the Renkan Namespace Rkns and Default values */
-
-if (typeof Rkns !== "object") {
-    Rkns = {}
-}
-
-Rkns.$ = jQuery;
-
-Rkns._ = _;
-
-Rkns.VERSION = '0.2';
-
-Rkns.pickerColors = ["#8f1919", "#a80000", "#d82626", "#ff0000", "#e87c7c", "#ff6565", "#f7d3d3", "#fecccc",
-    "#8f5419", "#a85400", "#d87f26", "#ff7f00", "#e8b27c", "#ffb265", "#f7e5d3", "#fee5cc",
-    "#8f8f19", "#a8a800", "#d8d826", "#feff00", "#e8e87c", "#feff65", "#f7f7d3", "#fefecc",
-    "#198f19", "#00a800", "#26d826", "#00ff00", "#7ce87c", "#65ff65", "#d3f7d3", "#ccfecc",
-    "#198f8f", "#00a8a8", "#26d8d8", "#00feff", "#7ce8e8", "#65feff", "#d3f7f7", "#ccfefe",
-    "#19198f", "#0000a8", "#2626d8", "#0000ff", "#7c7ce8", "#6565ff", "#d3d3f7", "#ccccfe",
-    "#8f198f", "#a800a8", "#d826d8", "#ff00fe", "#e87ce8", "#ff65fe", "#f7d3f7", "#feccfe",
-    "#000000", "#242424", "#484848", "#6d6d6d", "#919191", "#b6b6b6", "#dadada", "#ffffff"];
-
-Rkns._BaseBin = function(_renkan, _opts) {
-    if (typeof _renkan !== "undefined") {
-        this.renkan = _renkan;
-        this.renkan.$.find(".Rk-Bin-Main").hide();
-        this.$ = Rkns.$('<li>')
-            .addClass("Rk-Bin")
-            .appendTo(_renkan.$.find(".Rk-Bin-List"));
-        this.title_icon_$ = Rkns.$('<span>')
-            .addClass("Rk-Bin-Title-Icon")
-            .appendTo(this.$);
-            
-        var _this = this;
-        
-        Rkns.$('<a>')
-            .attr({
-                href: "#",
-                title: _renkan.translate("Close bin")
-            })
-            .addClass("Rk-Bin-Close")
-            .html('&times;')
-            .appendTo(this.$)
-            .click(function() {
-                _this.destroy();
-                if (!_renkan.$.find(".Rk-Bin-Main:visible").length) {
-                    _renkan.$.find(".Rk-Bin-Main:last").slideDown();
-                }
-                _renkan.resizeBins();
-                return false;
-            });
-        Rkns.$('<a>')
-            .attr({
-                href: "#",
-                title: _renkan.translate("Refresh bin")
-            })
-            .addClass("Rk-Bin-Refresh")
-            .appendTo(this.$)
-            .click(function() {
-                _this.refresh();
-                return false;
-            });
-        this.count_$ = Rkns.$('<div>')
-            .addClass("Rk-Bin-Count")
-            .appendTo(this.$);
-        this.title_$ = Rkns.$('<h2>')
-            .addClass("Rk-Bin-Title")
-            .appendTo(this.$);
-        this.main_$ = Rkns.$('<div>')
-            .addClass("Rk-Bin-Main")
-            .appendTo(this.$)
-            .html('<h4 class="Rk-Bin-Loading">' + _renkan.translate("Loading, please wait") + '</h4>');
-        this.title_$.html(_opts.title || '(new bin)');
-        this.renkan.resizeBins();
-        
-        if (_opts.auto_refresh) {
-            window.setInterval(function() {
-                _this.refresh();
-            },_opts.auto_refresh)
-        }
-    }
-};
-
-Rkns._BaseBin.prototype.destroy = function() {
-    this.$.detach();
-    this.renkan.resizeBins();
-};
-
-/* Point of entry */
-
-Rkns.Renkan = function(_opts) {
-    var _this = this;
-    
-    this.options = _.defaults(_opts, Rkns.defaults);
-        
-    Rkns._(this.options.property_files).each(function(f) {
-        Rkns.$.getJSON(f, function(data) {
-            _this.options.properties = _this.options.properties.concat(data);
-        });
-    });
-    
-    this.read_only = this.options.read_only || !this.options.editor_mode;
-
-    this.project = new Rkns.Models.Project();
-    
-    if (typeof this.options.user_id !== "undefined") {
-        this.current_user = this.options.user_id;
-    }
-    this.$ = Rkns.$("#" + this.options.container);
-    this.$
-        .addClass("Rk-Main")
-        .html(this.template(this));
-    this.renderer = new Rkns.Renderer.Scene(this);
-    this.tabs = [];
-    this.search_engines = [];
-
-    this.current_user_list = new Rkns.Models.UsersList();
-    
-    if (!this.options.search.length) {
-        this.$.find(".Rk-Web-Search-Form").detach();
-    } else {
-        var _tmpl = Rkns._.template('<li class="<%= className %>" data-key="<%= key %>"><%= title %></li>'),
-            _select = this.$.find(".Rk-Search-List"),
-            _input = this.$.find(".Rk-Web-Search-Input")
-            _form = this.$.find(".Rk-Web-Search-Form");
-        Rkns._(this.options.search).each(function(_search, _key) {
-            if (Rkns[_search.type] && Rkns[_search.type].Search) {
-                _this.search_engines.push(new Rkns[_search.type].Search(_this, _search));
-            }
-        });
-        _select.html(
-            Rkns._(this.search_engines).map(function(_search, _key) {
-                return _tmpl({
-                    key: _key,
-                    title: _search.getSearchTitle(),
-                    className: _search.getBgClass()
-                });
-            }).join("")
-        );
-        _select.find("li").click(function() {
-            var _el = Rkns.$(this);
-            _this.setSearchEngine(_el.attr("data-key"));
-            _form.submit();
-        });
-        _form.submit(function() {
-            if (_input.val()) {
-                var _search = _this.search_engine;
-                _search.search(_input.val());
-            }
-            return false;
-        });
-        this.$.find(".Rk-Search-Current").mouseenter(
-            function() { _select.slideDown(); }
-        );
-        this.$.find(".Rk-Search-Select").mouseleave(
-            function() { _select.hide(); }
-        );
-        this.setSearchEngine(0);
-    }
-    Rkns._(this.options.bins).each(function(_bin) {
-        if (Rkns[_bin.type] && Rkns[_bin.type].Bin) {
-            _this.tabs.push(new Rkns[_bin.type].Bin(_this, _bin));
-        }
-    });
-    
-    var elementDropped = false;
-    
-    this.$.find(".Rk-Bins")
-        .on("click",".Rk-Bin-Title,.Rk-Bin-Title-Icon", function() {
-            var _mainDiv = Rkns.$(this).siblings(".Rk-Bin-Main");
-            if (_mainDiv.is(":hidden")) {
-                _this.$.find(".Rk-Bin-Main").slideUp();
-                _mainDiv.slideDown();
-            }
-        }).on("mouseover", ".Rk-Bin-Item", function(_e) {
-            var _t = Rkns.$(this);
-            if (_t && $(_t).attr("data-uri")) {
-                var _models = _this.project.get("nodes").where({
-                    uri: $(_t).attr("data-uri")
-                });
-                Rkns._(_models).each(function(_model) {
-                    _this.renderer.highlightModel(_model);
-                });
-            }
-        }).mouseout(function() {
-            _this.renderer.unhighlightAll();
-        }).on("mousemove", ".Rk-Bin-Item", function(e) {
-            try {
-                this.dragDrop();
-            }
-            catch(err) {}
-        }).on("touchstart", ".Rk-Bin-Item", function(e) {
-            elementDropped = false;
-        }).on("touchmove", ".Rk-Bin-Item", function(e) {
-            e.preventDefault();
-            var touch = e.originalEvent.changedTouches[0],
-                off = _this.renderer.canvas_$.offset(),
-                w = _this.renderer.canvas_$.width(),
-                h = _this.renderer.canvas_$.height();
-            if (touch.pageX >= off.left && touch.pageX < (off.left + w) && touch.pageY >= off.top && touch.pageY < (off.top + h)) {
-                if (elementDropped) {
-                    _this.renderer.onMouseMove(touch, true);
-                } else {
-                    elementDropped = true;
-                    var div = document.createElement('div');
-                    div.appendChild(this.cloneNode(true));
-                    _this.renderer.dropData({"text/html": div.innerHTML}, touch);
-                    _this.renderer.onMouseDown(touch, true);
-                }
-            }
-        }).on("touchend", ".Rk-Bin-Item", function(e) {
-            if (elementDropped) {
-                _this.renderer.onMouseUp(e.originalEvent.changedTouches[0], true);
-            }
-            elementDropped = false;
-        }).on("dragstart", ".Rk-Bin-Item", function(e) {
-            var div = document.createElement('div');
-            div.appendChild(this.cloneNode(true));
-            try {
-                e.originalEvent.dataTransfer.setData("text/html",div.innerHTML);
-            }
-            catch(err) {
-                e.originalEvent.dataTransfer.setData("text",div.innerHTML);
-            }
-        });
-    Rkns.$(window).resize(function() {
-        _this.resizeBins();
-    });
-    
-    this.$.find(".Rk-Bins-Search-Input").on("change keyup paste input", function() {
-       var val = Rkns.$(this).val();
-       Rkns._(_this.tabs).each(function(tab) {
-           tab.render(val);
-       });
-    });
-    this.$.find(".Rk-Bins-Search-Form").submit(function() {
-        return false
-    });
-};
-
-Rkns.Renkan.prototype.template = Rkns._.template(
-    '<% if (options.show_bins) { %><div class="Rk-Bins"><div class="Rk-Bins-Head"><h2 class="Rk-Bins-Title"><%- translate("Select contents:")%></h2>'
-    + '<form class="Rk-Web-Search-Form Rk-Search-Form"><input class="Rk-Web-Search-Input Rk-Search-Input" type="search" placeholder="<%- translate("Search the Web") %>" />'
-    + '<div class="Rk-Search-Select"><div class="Rk-Search-Current"></div><ul class="Rk-Search-List"></ul></div>'
-    + '<input type="submit" value="" class="Rk-Web-Search-Submit Rk-Search-Submit" title="<%- translate("Search the Web") %>" /></form>'
-    + '<form class="Rk-Bins-Search-Form Rk-Search-Form"><input class="Rk-Bins-Search-Input Rk-Search-Input" type="search" placeholder="<%- translate("Search in Bins") %>" />'
-    + '<input type="submit" value="" class="Rk-Bins-Search-Submit Rk-Search-Submit" title="<%- translate("Search in Bins") %>" /></form></div>'
-    + '<ul class="Rk-Bin-List"></ul></div><% } %><div class="Rk-Render Rk-Render-<% if (options.show_bins) { %>Panel<% } else { %>Full<% } %>"></div>'
-);
-
-Rkns.Renkan.prototype.translate = function(_text) {
-    if (Rkns.i18n[this.options.language] && Rkns.i18n[this.options.language][_text]) {
-        return Rkns.i18n[this.options.language][_text];
-    }
-    if (this.options.language.length > 2 && Rkns.i18n[this.options.language.substr(0,2)] && Rkns.i18n[this.options.language.substr(0,2)][_text]) {
-        return Rkns.i18n[this.options.language.substr(0,2)][_text];
-    }
-    return _text;
-};
-
-Rkns.Renkan.prototype.onStatusChange = function() {
-    this.renderer.onStatusChange();
-};
-
-Rkns.Renkan.prototype.setSearchEngine = function(_key) {
-    this.search_engine = this.search_engines[_key];
-    this.$.find(".Rk-Search-Current").attr("class","Rk-Search-Current " + this.search_engine.getBgClass());
-};
-
-Rkns.Renkan.prototype.resizeBins = function() {
-    var _d = + this.$.find(".Rk-Bins-Head").outerHeight();
-    this.$.find(".Rk-Bin-Title:visible").each(function() {
-        _d += Rkns.$(this).outerHeight();
-    });
-    this.$.find(".Rk-Bin-Main").css({
-        height: this.$.find(".Rk-Bins").height() - _d
-    });
-};
-
-/* Utility functions */
-
-Rkns.Utils = {
-    _ID_AUTO_INCREMENT : 0,
-    _ID_BASE : (function(_d) {
-        
-        function pad(n){return n<10 ? '0'+n : n}
-        function fillrand(n) {
-            var _res = ''
-            for (var i=0; i<n; i++) {
-                _res += Math.floor(16*Math.random()).toString(16);
-            }
-            return _res;
-        }
-        return _d.getUTCFullYear() + '-'  
-            + pad(_d.getUTCMonth()+1) + '-'  
-            + pad(_d.getUTCDate()) + '-'
-            + fillrand(16);
-        
-    })(new Date()),
-    getUID : function(_base) {
-        
-        var _n = (++this._ID_AUTO_INCREMENT).toString(16),
-            _base = (typeof _base === "undefined" ? "" : _base + "-" );
-        while (_n.length < 4) {
-            _n = '0' + _n
-        }
-        return _base + this._ID_BASE + '-' + _n;
-        
-    },
-    getFullURL : function(url) {
-        
-        if(typeof(url) == 'undefined' || url == null ) {
-            return "";
-        }
-        if(/https?:\/\//.test(url)) {
-            return url;
-        }
-        var img = new Image();
-        img.src = url;
-        var res = img.src;
-        img.src = null;
-        return res;
-        
-    },
-    inherit : function(_baseClass, _callbefore) {
-        
-        var _class = function(_arg) {
-            if (typeof _callbefore === "function") {
-                _callbefore.apply(this, Array.prototype.slice.call(arguments, 0));
-            }
-            _baseClass.apply(this, Array.prototype.slice.call(arguments, 0));
-            if (typeof this._init == "function" && !this._initialized) {
-                this._init.apply(this, Array.prototype.slice.call(arguments, 0));
-                this._initialized = true;
-            }
-        }
-        Rkns._(_class.prototype).extend(_baseClass.prototype);
-        return _class;
-        
-    }
-};
-
-Rkns.defaults = {
-    
-    language: (navigator.language || navigator.userLanguage || "en"),
-        /* GUI Language */
-    container: "renkan",
-        /* GUI Container DOM element ID */
-    search: [],
-        /* List of Search Engines */
-    bins: [],
-           /* List of Bins */
-    static_url: "",
-        /* URL for static resources */
-    show_bins: true,
-        /* Show bins in left column */
-    properties: [],
-        /* Semantic properties for edges */
-    read_only: false,
-        /* Allows editing of renkan without changing the rest of the GUI. Can be switched on/off on the fly to block/enable editing */
-    editor_mode: true,
-        /* Switch for Publish/Edit GUI. If editor_mode is false, read_only will be true.  */
-    snapshot_mode: false,
-        /* In snapshot mode, clicking on the floppy will save a snapshot. Otherwise, it will show the connection status */
-    show_top_bar: true,
-        /* Show the top bar, (title, buttons, users) */
-    default_user_color: "#303030",
-    size_bug_fix: true,
-        /* Resize the canvas after load (fixes a bug on iPad and FF Mac) */
-    force_resize: false,
-    allow_double_click: true,
-        /* Allows Double Click to create a node on an empty background */
-    element_delete_delay: 5000,
-    
-    /* MINI-MAP OPTIONS */
-    
-    show_minimap: true,
-        /* Show a small map at the bottom right */
-    minimap_width: 160,
-    minimap_height: 120,
-    minimap_background_color: "#ffffff",
-    minimap_border_color: "#cccccc",
-    minimap_highlight_color: "#ffff00",
-    minimap_highlight_weight: 5,
-    
-    /* EDGE/NODE COMMON OPTIONS */
-       
-    buttons_background: "#202020",
-    buttons_label_color: "#c000c0",
-    buttons_label_font_size: 9,
-    
-    /* NODE DISPLAY OPTIONS */
-    
-    show_node_circles: true,
-        /* Show circles for nodes */
-    clip_node_images: true,
-        /* Constraint node images to circles */
-    node_size_base: 25,
-    node_stroke_width: 2,
-    selected_node_stroke_width: 4,
-    node_fill_color: "#ffffff",
-    highlighted_node_fill_color: "#ffff00",
-    node_label_distance: 5,
-        /* Vertical distance between node and label */
-    node_label_max_length: 60,
-        /* Maximum displayed text length */
-    label_untitled_nodes: "(untitled)",
-        /* Label to display on untitled nodes */
-    
-    /* EDGE DISPLAY OPTIONS */
-    
-    edge_stroke_width: 2,
-    selected_edge_stroke_width: 4,
-    edge_label_distance: 0,
-    edge_label_max_length: 20,
-    edge_arrow_length: 18,
-    edge_arrow_width: 12,
-    edge_gap_in_bundles: 12,
-    label_untitled_edges: "",
-    
-    /* CONTEXTUAL DISPLAY (TOOLTIP OR EDITOR) OPTIONS */
-   
-    tooltip_width: 275,
-    tooltip_padding: 10,
-    tooltip_margin: 15,
-    tooltip_arrow_length : 20,
-    tooltip_arrow_width : 40,
-    tooltip_top_color: "#f0f0f0",
-    tooltip_bottom_color: "#d0d0d0",
-    tooltip_border_color: "#808080",
-    tooltip_border_width: 1
-    
-};
-
-(function() {
-    
-    var root = this;
-        
-    var Backbone = root.Backbone;
-    
-    var Models = root.Rkns.Models = {};
-    
-    
-    Models.getUID = function(obj) {
-        var guid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
-            var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
-            return v.toString(16);
-        });
-        return obj.type + "-" + guid; 
-    };
-    
-    
-    var RenkanModel = Backbone.RelationalModel.extend({
-        idAttribute : "_id",
-        constructor: function(options) {
-            
-            if (typeof options !== "undefined") {
-                options._id = options._id || options.id || Models.getUID(this);
-                options.title = options.title || "";
-                options.description = options.description || "";
-                options.uri = options.uri || "";
-                
-                if(typeof this.prepare === "function") {
-                    options = this.prepare(options);
-                }
-            }
-            Backbone.RelationalModel.prototype.constructor.call(this, options);
-        },
-        validate: function() {
-            if(!this.type) {
-                return "object has no type";
-            }
-        },
-        addReference : function(_options, _propName, _list, _id, _default) {
-            var _element = _list.get(_id);
-            if (typeof _element === "undefined" && typeof _default !== "undefined") {
-                _options[_propName ] = _default;
-            }
-            else {
-                _options[_propName ] = _element;
-            }
-        }
-    });
-        
-    // USER
-    var User = Models.User = RenkanModel.extend({
-        type: "user",
-        prepare: function(options) {
-            options.color = options.color || "#666666";
-            return options;
-        },
-        toJSON: function() {
-            return {
-                _id: this.get("_id"),
-                title: this.get("title"),
-                uri: this.get("uri"),
-                description: this.get("description"),
-                color: this.get("color"),
-            };
-        },
-    });
-    
-    // NODE
-    var Node = Models.Node = RenkanModel.extend({
-        type: "node",
-        relations: [{
-            type: Backbone.HasOne,
-            key: "created_by",
-            relatedModel: User
-        }],
-        prepare: function(options) {
-            project = options.project;
-            this.addReference(options, "created_by", project.get("users"), options.created_by, project.current_user);
-            options.description = options.description || "";
-            return options;
-        },
-        toJSON: function() {
-            return {
-                _id: this.get("_id"),
-                title: this.get("title"),
-                uri: this.get("uri"),
-                description: this.get("description"),
-                position: this.get("position"),
-                image: this.get("image"),
-                color: this.get("color"),
-                created_by: this.get("created_by") ? this.get("created_by").get("_id") : null,
-                size: this.get("size")
-            };
-        },
-    });
-    
-    // EDGE
-    var Edge = Models.Edge = RenkanModel.extend({
-        type: "edge",
-        relations: [
-          {
-            type: Backbone.HasOne,
-            key: "created_by",
-            relatedModel: User
-          },
-          {
-            type: Backbone.HasOne,
-            key: "from",
-            relatedModel: Node
-          },
-          {
-            type: Backbone.HasOne,
-            key: "to",
-            relatedModel: Node
-          },
-        ],
-        prepare: function(options) {
-            project = options.project;
-            this.addReference(options, "created_by", project.get("users"), options.created_by, project.current_user);
-            this.addReference(options, "from", project.get("nodes"), options.from);
-            this.addReference(options, "to", project.get("nodes"), options.to);
-            return options;
-        },
-        toJSON: function() {
-            return {
-                _id: this.get("_id"),
-                title: this.get("title"),
-                uri: this.get("uri"),
-                description: this.get("description"),
-                from: this.get("from") ? this.get("from").get("_id") : null,
-                to: this.get("to") ? this.get("to").get("_id") : null,
-                color: this.get("color"),
-                created_by: this.get("created_by") ? this.get("created_by").get("_id") : null
-            };
-        },
-    });
-        
-    // PROJECT
-    var Project = Models.Project = RenkanModel.extend({
-        type: "project",
-        relations: [
-          {
-            type: Backbone.HasMany,
-            key: "users",
-            relatedModel: User,
-            reverseRelation: {
-                key: 'project',
-                includeInJSON: '_id'
-            },
-          },
-          {
-            type: Backbone.HasMany,
-            key: "nodes",
-            relatedModel: Node,
-            reverseRelation: {
-                key: 'project',
-                includeInJSON: '_id'
-            },
-          },
-          {
-            type: Backbone.HasMany,
-            key: "edges",
-            relatedModel: Edge,
-            reverseRelation: {
-                key: 'project',
-                includeInJSON: '_id'
-            },
-          }
-        ],
-        addUser: function(_props, _options) {
-            _props.project = this;
-            var _user = User.findOrCreate(_props);
-            this.get("users").push(_user, _options);
-            return _user;
-        },
-        addNode: function(_props, _options) {
-            _props.project = this;            
-            var _node = Node.findOrCreate(_props);
-            this.get("nodes").push(_node, _options);
-            return _node;
-        },
-        addEdge: function(_props, _options) {
-            _props.project = this;
-            var _edge = Edge.findOrCreate(_props);
-            this.get("edges").push(_edge, _options);
-            return _edge;
-        },
-        removeNode: function(_model) {
-            this.get("nodes").remove(_model);
-        },
-        removeEdge: function(_model) {
-            this.get("edges").remove(_model);
-        },
-        validate: function(options) {
-            var _project = this;
-            _(options.users).each(function(_item) {
-                _item.project = _project;
-            });
-            _(options.nodes).each(function(_item) {
-                _item.project = _project;
-            });
-            _(options.edges).each(function(_item) {
-                _item.project = _project;
-            });
-        },
-        // Add event handler to remove edges when a node is removed
-        initialize: function() {
-            var _this = this;
-            this.on("remove:nodes", function(_node) {
-                _this.get("edges").remove(
-                    _this.get("edges").filter(function(_edge) {
-                        return _edge.get("from") == _node || _edge.get("to") == _node;
-                    })
-                );
-            });
-        }
-    });
-    
-    var RosterUser = Models.RosterUser = Backbone.Model.extend({
-        type: "roster_user",               
-        idAttribute : "_id",
-        
-        constructor: function(options) {
-            
-            if (typeof options !== "undefined") {
-                options._id = options._id || options.id || Models.getUID(this);
-                options.title = options.title || "(untitled " + this.type + ")";
-                options.description = options.description || "";
-                options.uri = options.uri || "";
-                options.project = options.project || null;
-                options.site_id = options.site_id || 0;
-                
-                if(typeof this.prepare === "function") {
-                    options = this.prepare(options);
-                }
-            }
-            Backbone.Model.prototype.constructor.call(this, options);
-        },
-        
-        validate: function() {
-            if(!this.type) {
-                return "object has no type";
-            }
-        },
-        
-        prepare: function(options) {
-            options.color = options.color || "#666666";
-            return options;
-        },
-        
-        toJSON: function() {
-            return {
-                _id: this.get("_id"),
-                title: this.get("title"),
-                uri: this.get("uri"),
-                description: this.get("description"),
-                color: this.get("color"),
-                project: (this.get("project") != null)?this.get("project").get("id"):null,
-                site_id: this.get("site_id")
-            };
-        },
-    });
-    
-    var UsersList = Models.UsersList = Backbone.Collection.extend({
-        model: RosterUser
-    });
-    
-
-}).call(window);
-
-Rkns.i18n = {
-    fr: {
-        "Edit Node": "Édition d’un nœud",
-        "Edit Edge": "Édition d’un lien",
-        "Title:": "Titre :",
-        "URI:": "URI :",
-        "Description:": "Description :",
-        "From:": "De :",
-        "To:": "Vers :",
-        "Image": "Image",
-        "Image URL:": "URL d'Image",
-        "Choose Image File:": "Choisir un fichier image",
-        "Full Screen": "Mode plein écran",
-        "Add Node": "Ajouter un nœud",
-        "Add Edge": "Ajouter un lien",
-        "Archive Project": "Archiver le projet",
-        "Auto-save enabled": "Enregistrement automatique activé",
-        "Connection lost": "Connexion perdue",
-        "Created by:": "Créé par :",
-        "Zoom In": "Agrandir l’échelle",
-        "Zoom Out": "Rapetisser l’échelle",
-        "Edit": "Éditer",
-        "Remove": "Supprimer",
-        "Cancel deletion": "Annuler la suppression",
-        "Link to another node": "Créer un lien",
-        "Enlarge": "Agrandir",
-        "Shrink": "Rétrécir",
-        "Click on the background canvas to add a node": "Cliquer sur le fond du graphe pour rajouter un nœud",
-        "Click on a first node to start the edge": "Cliquer sur un premier nœud pour commencer le lien",
-        "Click on a second node to complete the edge": "Cliquer sur un second nœud pour terminer le lien",
-        "Twitter": "Twitter",
-        "Wikipedia": "Wikipédia",
-        "Wikipedia in ": "Wikipédia en ",
-        "French": "Français",
-        "English": "Anglais",
-        "Japanese": "Japonais",
-        "Untitled project": "Projet sans titre",
-        "Lignes de Temps": "Lignes de Temps",
-        "Loading, please wait": "Chargement en cours, merci de patienter",
-        "Edge color:": "Couleur :",
-        "Node color:": "Couleur :",
-        "Choose color": "Choisir une couleur",
-        "Change edge direction": "Changer le sens du lien",
-        "Do you really wish to remove node ": "Voulez-vous réellement supprimer le nœud ",
-        "Do you really wish to remove edge ": "Voulez-vous réellement supprimer le lien ",
-        "This file is not an image": "Ce fichier n'est pas une image",
-        "Image size must be under ": "L'image doit peser moins de ",
-        "Size:": "Taille :",
-        "KB": "ko",
-        "Choose from vocabulary:": "Choisir dans un vocabulaire :",
-        "SKOS Documentation properties": "SKOS: Propriétés documentaires",
-        "has note": "a pour note",
-        "has example": "a pour exemple",
-        "has definition": "a pour définition",
-        "SKOS Semantic relations": "SKOS: Relations sémantiques",
-        "has broader": "a pour concept plus large",
-        "has narrower": "a pour concept plus étroit",
-        "has related": "a pour concept apparenté",
-        "Dublin Core Metadata": "Métadonnées Dublin Core",
-        "has contributor": "a pour contributeur",
-        "covers": "couvre",
-        "created by": "créé par",
-        "has date": "a pour date",
-        "published by": "édité par",
-        "has source": "a pour source",
-        "has subject": "a pour sujet",
-        "Dragged resource": "Ressource glisée-déposée",
-        "Search the Web": "Rechercher en ligne",
-        "Search in Bins": "Rechercher dans les chutiers",
-        "Close bin": "Fermer le chutier",
-        "Refresh bin": "Rafraîchir le chutier",
-        "(untitled)": "(sans titre)",
-        "Select contents:": "Sélectionner des contenus :",
-        "Drag items from this website, drop them in Renkan": "Glissez des éléments de ce site web vers Renkan",
-        "Drag this button to your bookmark bar. When on a third-party website, click it to enable drag-and-drop from the website to Renkan.": "Glissez ce bouton vers votre barre de favoris. Ensuite, depuis un site tiers, cliquez dessus pour activer 'Drag-to-Add' puis glissez des éléments de ce site vers Renkan"
-    }
-}
-
-/* Loads a JSON File */
-
-Rkns.jsonIO = function(_renkan, _opts) {
-    var _proj = _renkan.project;
-    if (typeof _opts.http_method == "undefined") {
-        _opts.http_method = 'PUT';
-    }
-    var _load = function() {
-        Rkns.$.getJSON(_opts.url, function(_data) {
-            _proj.set(_data, {validate: true});
-            _renkan.renderer.autoScale();
-        });
-    }
-        
-    _load();
-}
-
-Rkns.Renderer = {
-    _MINIMAP_MARGIN: 20,
-    _MIN_DRAG_DISTANCE: 2,
-    _NODE_BUTTON_WIDTH: 40,
-    _EDGE_BUTTON_INNER: 2,
-    _EDGE_BUTTON_OUTER: 40,
-    _CLICKMODE_ADDNODE : 1,
-    _CLICKMODE_STARTEDGE : 2,
-    _CLICKMODE_ENDEDGE : 3,
-    _IMAGE_MAX_KB : 500,
-    _NODE_SIZE_STEP: Math.LN2/4,
-    _MIN_SCALE: 1/20,
-    _MAX_SCALE: 20,
-    _AUTOSCALE_MARGIN: 50,
-    _MOUSEMOVE_RATE: 80,
-    _DOUBLETAP_DELAY: 800,
-    _DOUBLETAP_DISTANCE: 20*20,
-    _USER_PLACEHOLDER : function(_renkan) {
-        return {
-            color: _renkan.options.default_user_color,
-            title: _renkan.translate("(unknown user)"),
-            get: function(attr) {
-                return this[attr] || false;
-            }
-        }
-    },
-    _BOOKMARKLET_CODE: function(_renkan) {
-        return "(function(a,b,c,d,e,f,h,i,j,k,l,m,n,o,p,q,r){a=document;b=a.body;c=a.location.href;j='draggable';m='text/x-iri-';d=a.createElement('div');d.innerHTML='<p_style=\"position:fixed;top:0;right:0;font:bold_18px_sans-serif;color:#fff;background:#909;padding:10px;z-index:100000;\">"
-        + _renkan.translate("Drag items from this website, drop them in Renkan").replace(/ /g,"_")
-        + "</p>'.replace(/_/g,String.fromCharCode(32));b.appendChild(d);e=[{r:/https?:\\/\\/[^\\/]*twitter\\.com\\//,s:'.tweet',n:'twitter'},{r:/https?:\\/\\/[^\\/]*google\\.[^\\/]+\\//,s:'.g',n:'google'},{r:/https?:\\/\\/[^\\/]*lemonde\\.fr\\//,s:'[data-vr-contentbox]',n:'lemonde'}];f=false;e.forEach(function(g){if(g.r.test(c)){f=g;}});if(f){h=function(){Array.prototype.forEach.call(a.querySelectorAll(f.s),function(i){i[j]=true;k=i.style;k.borderWidth='2px';k.borderColor='#909';k.borderStyle='solid';k.backgroundColor='rgba(200,0,180,.1)';})};window.setInterval(h,500);h();};a.addEventListener('dragstart',function(k){l=k.dataTransfer;l.setData(m+'source-uri',c);l.setData(m+'source-title',a.title);n=k.target;if(f){o=n;while(!o.attributes[j]){o=o.parentNode;if(o==b){break;}}}if(f&&o.attributes[j]){p=o.cloneNode(true);l.setData(m+'specific-site',f.n)}else{q=a.getSelection();if(q.type==='Range'||!q.type){p=q.getRangeAt(0).cloneContents();}else{p=n.cloneNode();}}r=a.createElement('div');r.appendChild(p);l.setData('text/x-iri-selected-text',r.textContent.trim());l.setData('text/x-iri-selected-html',r.innerHTML);},false);})();"
-    },
-    shortenText : function(_text, _maxlength) {
-        return (_text.length > _maxlength ? (_text.substr(0,_maxlength) + '…') : _text);
-    },
-    drawEditBox : function(_options, _coords, _path, _xmargin, _selector) {
-        _selector.css({
-            width: ( _options.tooltip_width - 2* _options.tooltip_padding ),
-        })
-        var _height = _selector.outerHeight() + 2* _options.tooltip_padding,
-            _isLeft = (_coords.x < paper.view.center.x ? 1 : -1),
-            _left = _coords.x + _isLeft * ( _xmargin + _options.tooltip_arrow_length ),
-            _right = _coords.x + _isLeft * ( _xmargin + _options.tooltip_arrow_length + _options.tooltip_width ),
-            _top = _coords.y - _height / 2;
-        if (_top + _height > (paper.view.size.height - _options.tooltip_margin)) {
-            _top = Math.max( paper.view.size.height - _options.tooltip_margin, _coords.y + _options.tooltip_arrow_width / 2 ) - _height;
-        }
-        if (_top < _options.tooltip_margin) {
-            _top = Math.min( _options.tooltip_margin, _coords.y - _options.tooltip_arrow_width / 2 );
-        }
-        var _bottom = _top + _height;
-        _path.segments[0].point
-            = _path.segments[7].point
-            = _coords.add([_isLeft * _xmargin, 0]);
-        _path.segments[1].point.x
-            = _path.segments[2].point.x
-            = _path.segments[5].point.x
-            = _path.segments[6].point.x
-            = _left;
-        _path.segments[3].point.x
-            = _path.segments[4].point.x
-            = _right;
-        _path.segments[2].point.y
-            = _path.segments[3].point.y
-            = _top;
-        _path.segments[4].point.y
-            = _path.segments[5].point.y
-            = _bottom;
-        _path.segments[1].point.y = _coords.y - _options.tooltip_arrow_width / 2;
-        _path.segments[6].point.y = _coords.y + _options.tooltip_arrow_width / 2;
-        _path.closed = true;
-        _path.fillColor = new paper.GradientColor(new paper.Gradient([_options.tooltip_top_color, _options.tooltip_bottom_color]), [0,_top], [0, _bottom]);
-        _selector.css({
-            left: (_options.tooltip_padding + Math.min(_left, _right)),
-            top: (_options.tooltip_padding + _top)
-        });
-        return _path;
-    }
-}
-
-Rkns.Renderer._BaseRepresentation = function(_renderer, _model) {
-    if (typeof _renderer !== "undefined") {
-        this.renderer = _renderer;
-        this.renkan = _renderer.renkan;
-        this.project = _renderer.renkan.project;
-        this.options = _renderer.renkan.options;
-        this.model = _model;
-        if (this.model) {
-            var _this = this;
-            this._changeBinding = function() {
-                _this.redraw();
-            }
-            this._removeBinding = function() {
-                _renderer.removeRepresentation(_this);
-                _(function() {
-                    _renderer.redraw()
-                }).defer();
-            }
-            this._selectBinding = function() {
-                _this.select();
-            }
-            this._unselectBinding = function() {
-                _this.unselect();
-            }
-            this.model.on("change", this._changeBinding );
-            this.model.on("remove", this._removeBinding );
-            this.model.on("select", this._selectBinding );
-            this.model.on("unselect", this._unselectBinding );
-        }
-    }
-}
-
-Rkns.Renderer._BaseRepresentation.prototype.super = function(_func) {
-    Rkns.Renderer._BaseRepresentation.prototype[_func].apply(this, Array.prototype.slice.call(arguments, 1));
-}
-
-Rkns.Renderer._BaseRepresentation.prototype.redraw = function() {}
-
-Rkns.Renderer._BaseRepresentation.prototype.moveTo = function() {}
-
-Rkns.Renderer._BaseRepresentation.prototype.show = function() {}
-
-Rkns.Renderer._BaseRepresentation.prototype.hide = function() {}
-
-Rkns.Renderer._BaseRepresentation.prototype.select = function() {
-    if (this.model) {
-        this.model.trigger("selected");
-    }
-}
-
-Rkns.Renderer._BaseRepresentation.prototype.unselect = function() {
-    if (this.model) {
-        this.model.trigger("unselected");
-    }
-}
-
-Rkns.Renderer._BaseRepresentation.prototype.highlight = function() {}
-
-Rkns.Renderer._BaseRepresentation.prototype.unhighlight = function() {}
-
-Rkns.Renderer._BaseRepresentation.prototype.mousedown = function() {}
-
-Rkns.Renderer._BaseRepresentation.prototype.mouseup = function() {
-    if (this.model) {
-        this.model.trigger("clicked");
-    }
-}
-
-Rkns.Renderer._BaseRepresentation.prototype.destroy = function() {
-    if (this.model) {
-        this.model.off("change", this._changeBinding );
-        this.model.off("remove", this._removeBinding );
-        this.model.off("select", this._selectBinding );
-        this.model.off("unselect", this._unselectBinding );
-    }
-}
-
-/* */
-
-Rkns.Renderer._BaseButton = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
-
-Rkns.Renderer._BaseButton.prototype.moveTo = function(_pos) {
-    this.sector.moveTo(_pos);
-}
-
-Rkns.Renderer._BaseButton.prototype.show = function() {
-    this.sector.show();
-}
-
-Rkns.Renderer._BaseButton.prototype.hide = function() {
-    this.sector.hide();
-}
-
-Rkns.Renderer._BaseButton.prototype.select = function() {
-    this.sector.select();
-}
-
-Rkns.Renderer._BaseButton.prototype.unselect = function(_newTarget) {
-    this.sector.unselect();
-    if (!_newTarget || (_newTarget !== this.source_representation && _newTarget.source_representation !== this.source_representation)) {
-        this.source_representation.unselect();
-    }
-}
-
-Rkns.Renderer._BaseButton.prototype.destroy = function() {
-    this.sector.destroy();
-}
-
-/* */
-
-Rkns.Renderer.Node = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
-
-Rkns.Renderer.Node.prototype._init = function() {
-    this.renderer.node_layer.activate();
-    this.type = "Node";
-    this.circle = new paper.Path.Circle([0, 0], 1);
-    this.circle.__representation = this;
-    if (this.options.show_node_circles) {
-        this.circle.strokeWidth = this.options.node_stroke_width;
-        this.h_ratio = 1;
-    } else {
-        this.h_ratio = 0;
-    }
-    this.title = Rkns.$('<div class="Rk-Label">').appendTo(this.renderer.labels_$);
-    if (this.options.editor_mode) {
-        this.normal_buttons = [
-            new Rkns.Renderer.NodeEditButton(this.renderer, null),
-            new Rkns.Renderer.NodeRemoveButton(this.renderer, null),
-            new Rkns.Renderer.NodeLinkButton(this.renderer, null),
-            new Rkns.Renderer.NodeEnlargeButton(this.renderer, null),
-            new Rkns.Renderer.NodeShrinkButton(this.renderer, null)
-        ];
-        this.pending_delete_buttons = [
-            new Rkns.Renderer.NodeRevertButton(this.renderer, null)
-        ];
-        this.all_buttons = this.normal_buttons.concat(this.pending_delete_buttons)
-        for (var i = 0; i < this.all_buttons.length; i++) {
-            this.all_buttons[i].source_representation = this;
-        }
-        this.active_buttons = [];
-    } else {
-        this.active_buttons = this.all_buttons = [];
-    }
-    this.last_circle_radius = 1;
-    
-    if (this.renderer.minimap) {
-        this.renderer.minimap.node_layer.activate();
-        this.minimap_circle = new paper.Path.Circle([0, 0], 1);
-        this.minimap_circle.__representation = this.renderer.minimap.miniframe.__representation;
-        this.renderer.minimap.node_group.addChild(this.minimap_circle);
-    }
-}
-
-Rkns.Renderer.Node.prototype.redraw = function(_dontRedrawEdges) {
-    var _model_coords = new paper.Point(this.model.get("position")),
-        _baseRadius = this.options.node_size_base * Math.exp((this.model.get("size") || 0) * Rkns.Renderer._NODE_SIZE_STEP);
-    if (!this.is_dragging || !this.paper_coords) {
-        this.paper_coords = this.renderer.toPaperCoords(_model_coords);
-    }
-    this.circle_radius = _baseRadius * this.renderer.scale;
-    if (this.last_circle_radius !== this.circle_radius) {
-        this.all_buttons.forEach(function(b) {
-            b.setSectorSize();
-        });
-        var square = new paper.Size(this.circle_radius, this.circle_radius),
-            topleft = this.paper_coords.subtract(square),
-            bounds = new paper.Rectangle(topleft, square.multiply(2));
-        this.circle.fitBounds(bounds);
-        if (this.node_image) {
-            this.node_image.fitBounds(bounds);
-        }
-    } else {
-        this.circle.position = this.paper_coords;
-        if (this.node_image) {
-            this.node_image.position = this.paper_coords;
-        }
-    }
-    this.last_circle_radius = this.circle_radius;
-    
-    var old_act_btn = this.active_buttons;
-    
-    if (this.model.get("delete_scheduled")) {
-        var opacity = .5;
-        this.active_buttons = this.pending_delete_buttons;
-        this.circle.dashArray = [2,2];
-    } else {
-        var opacity = 1;
-        this.active_buttons = this.normal_buttons;
-        this.circle.dashArray = null;
-    }
-    
-    if (this.selected && this.renderer.isEditable()) {
-        if (old_act_btn !== this.active_buttons) {
-            old_act_btn.forEach(function(b) {
-                b.hide();
-            });
-        }
-        this.active_buttons.forEach(function(b) {
-            b.show();
-        });
-    }
-    
-    if (this.node_image) {
-        this.node_image.opacity = this.highlighted ? opacity * .5 : (opacity - .01);
-    }
-    
-    this.circle.fillColor = this.highlighted ? this.options.highlighted_node_fill_color : this.options.node_fill_color;
-    
-    this.circle.opacity = this.options.show_node_circles ? opacity : .01;
-    
-    var _text = this.model.get("title") || this.renkan.translate(this.options.label_untitled_nodes) || "";
-    _text = Rkns.Renderer.shortenText(_text, this.options.node_label_max_length);
-    this.title.text(_text);
-    this.title.css({
-        left: this.paper_coords.x,
-        top: this.paper_coords.y + this.circle_radius * this.h_ratio + this.options.node_label_distance,
-        opacity: opacity
-    })
-    var _color = this.model.get("color") || (this.model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
-    this.circle.strokeColor = _color;
-    var _pc = this.paper_coords;
-    this.all_buttons.forEach(function(b) {
-        b.moveTo(_pc);
-    });
-    var _img = this.model.get("image");
-    if (_img && _img !== this.img) {
-        var _image = new Image(),
-            _this = this;
-        _image.onload = function() {
-            if (_this.node_image) {
-                _this.node_image.remove();
-            }
-            _this.renderer.node_layer.activate();
-            var _ratio = Math.min(2 / _image.width, 2 / _image.height );
-            if (!_this.options.show_node_circles) {
-                _this.h_ratio = Math.min(1, _image.height / _image.width);
-            }
-            var _raster = new paper.Raster(_image);
-            if (_this.options.clip_node_images) {
-                var _clip = new paper.Path.Circle([0, 0], 1);
-                _raster.scale(_ratio);
-                _this.node_image = new paper.Group(_clip, _raster);
-                _this.node_image.opacity = .99;
-                /* This is a workaround to allow clipping at group level
-                 * If opacity was set to 1, paper.js would merge all clipping groups in one (known bug).
-                */
-                _this.node_image.clipped = true;
-                _clip.__representation = _this;
-            } else {
-                _this.node_image = _raster;
-            }
-            _this.node_image.__representation = _this;
-            var square = new paper.Size(_this.circle_radius, _this.circle_radius),
-                topleft = _this.paper_coords.subtract(square),
-                bounds = new paper.Rectangle(topleft, square.multiply(2));
-            _this.node_image.fitBounds(bounds);
-            _this.redraw();
-            paper.view.draw();
-        }
-        _image.src = _img;
-    }
-    this.img = _img;
-    if (this.node_image && !this.img) {
-        this.node_image.remove();
-        delete this.node_image;
-    }
-    
-    if (this.renderer.minimap) {
-        this.minimap_circle.fillColor = _color;
-        var minipos = this.renderer.toMinimapCoords(_model_coords),
-            miniradius = this.renderer.minimap.scale * _baseRadius,
-            minisize = new paper.Size([miniradius, miniradius]);
-        this.minimap_circle.fitBounds(minipos.subtract(minisize), minisize.multiply(2));
-    }
-    
-    if (!_dontRedrawEdges) {
-        Rkns._.each(this.project.get("edges").filter(function (ed) { return ((ed.to === this.model) || (ed.from === this.model));}), function(edge, index, list){
-            var repr = this.renderer.getRepresentationByModel(edge);
-            if(repr != null && typeof repr.from_representation.paper_coords !== "undefined" && typeof repr.to_representation.paper_coords !== "undefined") {
-                repr.redraw();
-            }
-        }, this);
-    }
-
-}
-
-Rkns.Renderer.Node.prototype.paperShift = function(_delta) {
-    if (this.options.editor_mode) {
-        if (!this.renkan.read_only) {
-            this.is_dragging = true;
-            this.paper_coords = this.paper_coords.add(_delta);
-            this.redraw();
-        }
-    } else {
-        this.renderer.paperShift(_delta);
-    }
-}
-
-Rkns.Renderer.Node.prototype.openEditor = function() {
-    this.renderer.removeRepresentationsOfType("editor");
-    var _editor = this.renderer.addRepresentation("NodeEditor",null);
-    _editor.source_representation = this;
-    _editor.draw();
-}
-
-Rkns.Renderer.Node.prototype.select = function() {
-    this.selected = true;
-    this.circle.strokeWidth = this.options.selected_node_stroke_width;
-    if (this.renderer.isEditable()) {
-        this.active_buttons.forEach(function(b) {
-            b.show();
-        });
-    }
-    var _uri = this.model.get("uri");
-    if (_uri) {
-        Rkns.$('.Rk-Bin-Item').each(function() {
-            var _el = Rkns.$(this);
-            if (_el.attr("data-uri") == _uri) {
-                _el.addClass("selected");
-            }
-        });
-    }
-    if (!this.options.editor_mode) {
-        this.openEditor();
-    }
-    
-    if (this.renderer.minimap) {
-        this.minimap_circle.strokeWidth = this.options.minimap_highlight_weight;
-        this.minimap_circle.strokeColor = this.options.minimap_highlight_color;
-    }
-    this.super("select");
-}
-
-Rkns.Renderer.Node.prototype.unselect = function(_newTarget) {
-    if (!_newTarget || _newTarget.source_representation !== this) {
-        this.selected = false;
-        this.all_buttons.forEach(function(b) {
-            b.hide();
-        });
-        this.circle.strokeWidth = this.options.node_stroke_width;
-        Rkns.$('.Rk-Bin-Item').removeClass("selected");
-        if (this.renderer.minimap) {
-            this.minimap_circle.strokeColor = undefined;
-        }
-        this.super("unselect");
-    }
-}
-    
-Rkns.Renderer.Node.prototype.highlight = function() {
-    if (this.highlighted) {
-        return;
-    }
-    this.highlighted = true;
-    this.redraw();
-    this.renderer.throttledPaperDraw();
-}
-
-Rkns.Renderer.Node.prototype.unhighlight = function() {
-    if (!this.highlighted) {
-        return;
-    }
-    this.highlighted = false;
-    this.redraw();
-    this.renderer.throttledPaperDraw();
-}
-
-Rkns.Renderer.Node.prototype.saveCoords = function() {
-    var _coords = this.renderer.toModelCoords(this.paper_coords),
-        _data = {
-            position: {
-                x: _coords.x,
-                y: _coords.y
-            }
-        };
-    if (this.renderer.isEditable()) {
-        this.model.set(_data);
-    }
-}
-
-Rkns.Renderer.Node.prototype.mousedown = function(_event, _isTouch) {
-    if (_isTouch) {
-        this.renderer.unselectAll();
-        this.select();
-    }
-}
-
-Rkns.Renderer.Node.prototype.mouseup = function(_event, _isTouch) {
-    if (this.renderer.is_dragging && this.renderer.isEditable()) {
-        this.saveCoords();
-    } else {
-        if (!_isTouch && !this.model.get("delete_scheduled")) {
-            this.openEditor();
-        }
-        this.model.trigger("clicked");
-    }
-    this.renderer.click_target = null;
-    this.renderer.is_dragging = false;
-    this.is_dragging = false;
-}
-
-Rkns.Renderer.Node.prototype.destroy = function(_event) {
-    this.super("destroy");
-    this.all_buttons.forEach(function(b) {
-        b.destroy();
-    });
-    this.circle.remove();
-    this.title.remove();
-    if (this.renderer.minimap) {
-        this.minimap_circle.remove();
-    }
-    if (this.node_image) {
-        this.node_image.remove();
-    }
-}
-
-/* */
-
-Rkns.Renderer.Edge = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
-
-Rkns.Renderer.Edge.prototype._init = function() {
-    this.renderer.edge_layer.activate();
-    this.type = "Edge";
-    this.from_representation = this.renderer.getRepresentationByModel(this.model.get("from"));
-    this.to_representation = this.renderer.getRepresentationByModel(this.model.get("to"));
-    this.bundle = this.renderer.addToBundles(this);
-    this.line = new paper.Path();
-    this.line.add([0,0],[0,0],[0,0]);
-    this.line.__representation = this;
-    this.line.strokeWidth = this.options.edge_stroke_width;
-    this.arrow = new paper.Path();
-    this.arrow.add(
-        [ 0, 0 ],
-        [ this.options.edge_arrow_length, this.options.edge_arrow_width / 2 ],
-        [ 0, this.options.edge_arrow_width ]
-    );
-    this.arrow.__representation = this;
-    this.text = Rkns.$('<div class="Rk-Label Rk-Edge-Label">').appendTo(this.renderer.labels_$);
-    this.arrow_angle = 0;
-    if (this.options.editor_mode) {
-        this.normal_buttons = [
-            new Rkns.Renderer.EdgeEditButton(this.renderer, null),
-            new Rkns.Renderer.EdgeRemoveButton(this.renderer, null),
-        ];
-        this.pending_delete_buttons = [
-            new Rkns.Renderer.EdgeRevertButton(this.renderer, null)
-        ];
-        this.all_buttons = this.normal_buttons.concat(this.pending_delete_buttons)
-        for (var i = 0; i < this.all_buttons.length; i++) {
-            this.all_buttons[i].source_representation = this;
-        }
-        this.active_buttons = [];
-    } else {
-        this.active_buttons = this.all_buttons = [];
-    }
-    
-    if (this.renderer.minimap) {
-        this.renderer.minimap.edge_layer.activate();
-        this.minimap_line = new paper.Path();
-        this.minimap_line.add([0,0],[0,0]);
-        this.minimap_line.__representation = this.renderer.minimap.miniframe.__representation;
-        this.minimap_line.strokeWidth = 1;
-    }
-}
-
-Rkns.Renderer.Edge.prototype.redraw = function() {
-    this.from_representation = this.renderer.getRepresentationByModel(this.model.get("from"));
-    this.to_representation = this.renderer.getRepresentationByModel(this.model.get("to"));
-    if (!this.from_representation || !this.to_representation) {
-        return;
-    }
-    var _p0a = this.from_representation.paper_coords,
-        _p1a = this.to_representation.paper_coords,
-        _v = _p1a.subtract(_p0a),
-        _r = _v.length,
-        _u = _v.divide(_r),
-        _ortho = new paper.Point([- _u.y, _u.x]),
-        _group_pos = this.bundle.getPosition(this),
-        _delta = _ortho.multiply( this.options.edge_gap_in_bundles * _group_pos ),
-        _p0b = _p0a.add(_delta), /* Adding a 4 px difference */
-        _p1b = _p1a.add(_delta), /* to differentiate bundled links */
-        _a = _v.angle,
-        _textdelta = _ortho.multiply(this.options.edge_label_distance),
-        _handle = _v.divide(3),
-        _color = this.model.get("color") || this.model.get("color") || (this.model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
-    
-    if (this.model.get("delete_scheduled") || this.from_representation.model.get("delete_scheduled") || this.to_representation.model.get("delete_scheduled")) {
-        var opacity = .5;
-        this.line.dashArray = [2, 2];
-    } else {
-        var opacity = 1;
-        this.line.dashArray = null;
-    }
-    
-    var old_act_btn = this.active_buttons;
-    
-    this.active_buttons = this.model.get("delete_scheduled") ? this.pending_delete_buttons : this.normal_buttons;
-    
-    if (this.selected && this.renderer.isEditable() && old_act_btn !== this.active_buttons) {
-        old_act_btn.forEach(function(b) {
-            b.hide();
-        });
-        this.active_buttons.forEach(function(b) {
-            b.show();
-        });
-    }
-    
-    this.paper_coords = _p0b.add(_p1b).divide(2);
-    this.line.strokeColor = _color;
-    this.line.opacity = opacity;
-    this.line.segments[0].point = _p0a;
-    this.line.segments[1].point = this.paper_coords;
-    this.line.segments[1].handleIn = _handle.multiply(-1);
-    this.line.segments[1].handleOut = _handle;
-    this.line.segments[2].point = _p1a;
-    this.arrow.rotate(_a - this.arrow_angle);
-    this.arrow.fillColor = _color;
-    this.arrow.opacity = opacity;
-    this.arrow.position = this.paper_coords;
-    this.arrow_angle = _a;
-    if (_a > 90) {
-        _a -= 180;
-        _textdelta = _textdelta.multiply(-1);
-    }
-    if (_a < -90) {
-        _a += 180;
-        _textdelta = _textdelta.multiply(-1);
-    }
-    var _text = this.model.get("title") || this.renkan.translate(this.options.label_untitled_edges) || "";
-    _text = Rkns.Renderer.shortenText(_text, this.options.node_label_max_length);
-    this.text.text(_text);
-    var _textpos = this.paper_coords.add(_textdelta);
-    this.text.css({
-        left: _textpos.x,
-        top: _textpos.y,
-        transform: "rotate(" + _a + "deg)",
-        "-moz-transform": "rotate(" + _a + "deg)",
-        "-webkit-transform": "rotate(" + _a + "deg)",
-        opacity: opacity
-    });
-    this.text_angle = _a;
-    
-    var _pc = this.paper_coords;
-    this.all_buttons.forEach(function(b) {
-        b.moveTo(_pc);
-    });
-    
-    if (this.renderer.minimap) {
-        this.minimap_line.strokeColor = _color;
-        this.minimap_line.segments[0].point = this.renderer.toMinimapCoords(new paper.Point(this.from_representation.model.get("position")));
-         this.minimap_line.segments[1].point = this.renderer.toMinimapCoords(new paper.Point(this.to_representation.model.get("position")));
-    }
-}
-
-Rkns.Renderer.Edge.prototype.openEditor = function() {
-    this.renderer.removeRepresentationsOfType("editor");
-    var _editor = this.renderer.addRepresentation("EdgeEditor",null);
-    _editor.source_representation = this;
-    _editor.draw();
-}
-
-Rkns.Renderer.Edge.prototype.select = function() {
-    this.selected = true;
-    this.line.strokeWidth = this.options.selected_edge_stroke_width;
-    if (this.renderer.isEditable()) {
-        this.active_buttons.forEach(function(b) {
-            b.show();
-        });
-    }
-    if (!this.options.editor_mode) {
-        this.openEditor();
-    }
-    this.super("select");
-}
-
-Rkns.Renderer.Edge.prototype.unselect = function(_newTarget) {
-    if (!_newTarget || _newTarget.source_representation !== this) {
-        this.selected = false;
-        if (this.options.editor_mode) {
-            this.all_buttons.forEach(function(b) {
-                b.hide();
-            });
-        }
-        this.line.strokeWidth = this.options.edge_stroke_width;
-        this.super("unselect");
-    }
-}
-
-Rkns.Renderer.Edge.prototype.mousedown = function(_event, _isTouch) {
-    if (_isTouch) {
-        this.renderer.unselectAll();
-        this.select();
-    }
-}
-
-Rkns.Renderer.Edge.prototype.mouseup = function(_event, _isTouch) {
-    if (!this.renkan.read_only && this.renderer.is_dragging) {
-        this.from_representation.saveCoords();
-        this.to_representation.saveCoords();
-        this.from_representation.is_dragging = false;
-        this.to_representation.is_dragging = false;
-    } else {
-        if (!_isTouch) {
-            this.openEditor();
-        }
-        this.model.trigger("clicked");
-    }
-    this.renderer.click_target = null;
-    this.renderer.is_dragging = false;
-}
-
-Rkns.Renderer.Edge.prototype.paperShift = function(_delta) {
-    if (this.options.editor_mode) {
-        if (!this.options.read_only) {
-            this.from_representation.paperShift(_delta);
-            this.to_representation.paperShift(_delta);
-        }
-    } else {
-        this.renderer.paperShift(_delta);
-    }
-}
-
-Rkns.Renderer.Edge.prototype.destroy = function() {
-    this.super("destroy");
-    this.line.remove();
-    this.arrow.remove();
-    this.text.remove();
-    if (this.renderer.minimap) {
-        this.minimap_line.remove();
-    }
-    this.all_buttons.forEach(function(b) {
-        b.destroy();
-    });
-    var _this = this;
-    this.bundle.edges = Rkns._(this.bundle.edges).reject(function(_edge) {
-        return _edge === _this;
-    });
-}
-
-/* */
-
-Rkns.Renderer.TempEdge = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
-
-Rkns.Renderer.TempEdge.prototype._init = function() {
-    this.renderer.edge_layer.activate();
-    this.type = "Temp-edge";
-    
-    var _color = (this.project.get("users").get(this.renkan.current_user) || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
-    this.line = new paper.Path();
-    this.line.strokeColor = _color;
-    this.line.dashArray = [4, 2];
-    this.line.strokeWidth = this.options.selected_edge_stroke_width;
-    this.line.add([0,0],[0,0]);
-    this.line.__representation = this;
-    this.arrow = new paper.Path();
-    this.arrow.fillColor = _color;
-    this.arrow.add(
-        [ 0, 0 ],
-        [ this.options.edge_arrow_length, this.options.edge_arrow_width / 2 ],
-        [ 0, this.options.edge_arrow_width ]
-    );
-    this.arrow.__representation = this;
-    this.arrow_angle = 0;
-}
-
-Rkns.Renderer.TempEdge.prototype.redraw = function() {
-    var _p0 = this.from_representation.paper_coords,
-        _p1 = this.end_pos,
-        _a = _p1.subtract(_p0).angle,
-        _c = _p0.add(_p1).divide(2);
-    this.line.segments[0].point = _p0;
-    this.line.segments[1].point = _p1;
-    this.arrow.rotate(_a - this.arrow_angle);
-    this.arrow.position = _c;
-    this.arrow_angle = _a;
-}
-
-Rkns.Renderer.TempEdge.prototype.paperShift = function(_delta) {
-    if (!this.renderer.isEditable()) {
-        this.renderer.removeRepresentation(_this);
-        paper.view.draw();
-        return;
-    }
-    this.end_pos = this.end_pos.add(_delta);
-    var _hitResult = paper.project.hitTest(this.end_pos);
-    this.renderer.findTarget(_hitResult);
-    this.redraw();
-}
-
-Rkns.Renderer.TempEdge.prototype.mouseup = function(_event, _isTouch) {
-    var _hitResult = paper.project.hitTest(_event.point),
-        _model = this.from_representation.model,
-        _endDrag = true;
-    if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
-        var _target = _hitResult.item.__representation;
-        if (_target.type.substr(0,4) === "Node") {
-            var _destmodel = _target.model || _target.source_representation.model;
-            if (_model !== _destmodel) {
-                var _data = {
-                    id: Rkns.Utils.getUID('edge'),
-                    created_by: this.renkan.current_user,
-                    from: _model,
-                    to: _destmodel
-                };
-                if (this.renderer.isEditable()) {
-                    this.project.addEdge(_data);
-                }
-            }
-        }
-        
-        if (_model === _target.model || (_target.source_representation && _target.source_representation.model === _model)) {
-            _endDrag = false;
-            this.renderer.is_dragging = true;
-        }
-    }
-    if (_endDrag) {
-        this.renderer.click_target = null;
-        this.renderer.is_dragging = false;
-        this.renderer.removeRepresentation(this);
-        paper.view.draw();
-    }
-}
-
-Rkns.Renderer.TempEdge.prototype.destroy = function() {
-    this.arrow.remove();
-    this.line.remove();
-}
-
-/* */
-
-Rkns.Renderer._BaseEditor = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
-
-Rkns.Renderer._BaseEditor.prototype._init = function() {
-    this.renderer.buttons_layer.activate();
-    this.type = "editor";
-    this.editor_block = new paper.Path();
-    var _pts = Rkns._(Rkns._.range(8)).map(function() {return [0,0]});
-    this.editor_block.add.apply(this.editor_block, _pts);
-    this.editor_block.strokeWidth = this.options.tooltip_border_width;
-    this.editor_block.strokeColor = this.options.tooltip_border_color;
-    this.editor_block.opacity = .8;
-    this.editor_$ = Rkns.$('<div>')
-        .appendTo(this.renderer.editor_$)
-        .css({
-            position: "absolute",
-            opacity: .8
-        })
-        .hide();
-}
-
-Rkns.Renderer._BaseEditor.prototype.destroy = function() {
-    this.editor_block.remove();
-    this.editor_$.remove();
-}
-
-/* */
-
-Rkns.Renderer.NodeEditor = Rkns.Utils.inherit(Rkns.Renderer._BaseEditor);
-
-Rkns.Renderer.NodeEditor.prototype.template = Rkns._.template(
-    '<h2><span class="Rk-CloseX">&times;</span><%-renkan.translate("Edit Node")%></span></h2>'
-    + '<p><label><%-renkan.translate("Title:")%></label><input class="Rk-Edit-Title" type="text" value="<%-node.title%>"/></p>'
-    + '<p><label><%-renkan.translate("URI:")%></label><input class="Rk-Edit-URI" type="text" value="<%-node.uri%>"/><a class="Rk-Edit-Goto" href="<%-node.uri%>" target="_blank"></a></p>'
-    + '<p><label><%-renkan.translate("Description:")%></label><textarea class="Rk-Edit-Description"><%-node.description%></textarea></p>'
-    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("Size:")%></span><a href="#" class="Rk-Edit-Size-Down">-</a><span class="Rk-Edit-Size-Value"><%-node.size%></span><a href="#" class="Rk-Edit-Size-Up">+</a></p>'
-    + '<div class="Rk-Editor-p"><span class="Rk-Editor-Label"><%-renkan.translate("Node color:")%></span><div class="Rk-Edit-ColorPicker-Wrapper"><span class="Rk-Edit-Color" style="background:<%-node.color%>;"><span class="Rk-Edit-ColorTip"></span></span><ul class="Rk-Edit-ColorPicker">'
-    + '<% _(Rkns.pickerColors).each(function(c) { %><li data-color="<%=c%>" style="background: <%=c%>"></li><% }); %></ul><span class="Rk-Edit-ColorPicker-Text"><%- renkan.translate("Choose color") %></span></div></div>'
-    + '<img class="Rk-Edit-ImgPreview" src="<%-node.image || node.image_placeholder%>" />'
-    + '<p><label><%-renkan.translate("Image URL:")%></label><input class="Rk-Edit-Image" type="text" value="<%-node.image%>"/></p>'
-    + '<p><label><%-renkan.translate("Choose Image File:")%></label><input class="Rk-Edit-Image-File" type="file" accept="image/*"/></p>'    
-    + '<% if (node.has_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span> <span class="Rk-UserColor" style="background:<%-node.created_by_color%>;"></span><%- Rkns.Renderer.shortenText(node.created_by_title, 25) %></p><% } %>'
-);
-
-Rkns.Renderer.NodeEditor.prototype.readOnlyTemplate = Rkns._.template(
-    '<h2><span class="Rk-CloseX">&times;</span><span class="Rk-UserColor" style="background:<%-node.color%>;"></span>'
-    + '<span class="Rk-Display-Title"><% if (node.uri) { %><a href="<%-node.uri%>" target="_blank"><% } %><%-node.title%><% if (node.uri) { %></a><% } %></span></h2>'
-    + '<% if (node.uri) { %><p class="Rk-Display-URI"><a href="<%-node.uri%>" target="_blank"><%-node.short_uri%></a></p><% } %>'
-    + '<p><%-node.description%></p>'
-    + '<% if (node.image) { %><img class="Rk-Display-ImgPreview" src="<%-node.image%>" /><% } %>'
-    + '<% if (node.has_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-node.created_by_color%>;"></span><%- Rkns.Renderer.shortenText(node.created_by_title, 25) %></p><% } %>'
-);
-
-Rkns.Renderer.NodeEditor.prototype.draw = function() {
-    var _model = this.source_representation.model,
-        _created_by = _model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan),
-        _template = (this.renderer.isEditable() ? this.template : this.readOnlyTemplate ),
-        _image_placeholder = this.options.static_url + "img/image-placeholder.png",
-        _size = (_model.get("size") || 0);
-    this.editor_$
-        .html(_template({
-            node: {
-                has_creator: !!_model.get("created_by"),
-                title: _model.get("title"),
-                uri: _model.get("uri"),
-                short_uri:  Rkns.Renderer.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
-                description: _model.get("description"),
-                image: _model.get("image") || "",
-                image_placeholder: _image_placeholder,
-                color: _model.get("color") || _created_by.get("color"),
-                created_by_color: _created_by.get("color"),
-                created_by_title: _created_by.get("title"),
-                size: (_size > 0 ? "+" : "") + _size
-            },
-            renkan: this.renkan
-        }));
-    this.redraw();
-    var _this = this,
-        closeEditor = function() {
-            _this.renderer.removeRepresentation(_this);
-            paper.view.draw();
-        }
-        
-    this.editor_$.find(".Rk-CloseX").click(closeEditor);
-    
-    if (this.renderer.isEditable()) {
-        
-        var onFieldChange = Rkns._(function() {
-            Rkns._(function() {
-                if (_this.renderer.isEditable()) {
-                    var _uri = _this.editor_$.find(".Rk-Edit-URI").val(),
-                        _image = _this.editor_$.find(".Rk-Edit-Image").val();
-                    _this.editor_$.find(".Rk-Edit-ImgPreview").attr("src", _image || _image_placeholder);
-                    _this.editor_$.find(".Rk-Edit-Goto").attr("href",_uri);
-                    var _data = {
-                        title: _this.editor_$.find(".Rk-Edit-Title").val(),
-                        description: _this.editor_$.find(".Rk-Edit-Description").val(),
-                        uri: _uri,
-                        image: _image
-                    }
-                    _model.set(_data);
-                    _this.redraw();
-                } else {
-                    closeEditor();
-                }
-                
-            }).defer();
-        }).throttle(500);
-        
-        this.editor_$.on("keyup", function(_e) {
-            if (_e.keyCode === 27) {
-                closeEditor();
-            }
-        });
-        
-        this.editor_$.find("input, textarea").on("change keyup paste", onFieldChange);
-        
-        this.editor_$.find(".Rk-Edit-Image-File").change(function() {
-            if (this.files.length) {
-                var f = this.files[0],
-                    fr = new FileReader();
-                if (f.type.substr(0,5) !== "image") {
-                    alert(_this.renkan.translate("This file is not an image"));
-                    return;
-                }
-                if (f.size > (Rkns.Renderer._IMAGE_MAX_KB * 1024)) {
-                    alert(_this.renkan.translate("Image size must be under ")+Rkns.Renderer._IMAGE_MAX_KB+_this.renkan.translate("KB"));
-                    return;
-                }
-                fr.onload = function(e) {
-                    _this.editor_$.find(".Rk-Edit-Image").val(e.target.result);
-                    onFieldChange();
-                }
-                fr.readAsDataURL(f);
-            }
-        });
-        this.editor_$.find(".Rk-Edit-Title")[0].focus();
-        
-        var _picker = _this.editor_$.find(".Rk-Edit-ColorPicker");
-        
-        this.editor_$.find(".Rk-Edit-ColorPicker-Wrapper").hover(
-            function(_e) {
-                _e.preventDefault();
-                _picker.show();
-            },
-            function(_e) {
-                _e.preventDefault();
-                _picker.hide();
-            }
-        );
-        
-        _picker.find("li").hover(
-            function(_e) {
-                _e.preventDefault();
-                _this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color"));
-            },
-            function(_e) {
-                _e.preventDefault();
-                _this.editor_$.find(".Rk-Edit-Color").css("background", _model.get("color") || (_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(_this.renkan)).get("color"))
-            }
-        ).click(function(_e) {
-            _e.preventDefault();
-            if (_this.renderer.isEditable()) {
-                _model.set("color", $(this).attr("data-color"));
-                _picker.hide();
-                paper.view.draw();
-            } else {
-                closeEditor();
-            }
-        });
-        
-        function shiftSize(n) {
-            if (_this.renderer.isEditable()) {
-                var _newsize = n+(_model.get("size") || 0);
-                _this.editor_$.find(".Rk-Edit-Size-Value").text((_newsize > 0 ? "+" : "") + _newsize);
-                _model.set("size", _newsize);
-                paper.view.draw();
-            } else {
-                closeEditor();
-            }
-        }
-        
-        this.editor_$.find(".Rk-Edit-Size-Down").click(function() {
-            shiftSize(-1);
-            return false;
-        });
-        this.editor_$.find(".Rk-Edit-Size-Up").click(function() {
-            shiftSize(1);
-            return false;
-        });
-    }
-    this.editor_$.find("img").load(function() {
-        _this.redraw();
-    });
-}
-
-Rkns.Renderer.NodeEditor.prototype.redraw = function() {
-    var _coords = this.source_representation.paper_coords;
-    Rkns.Renderer.drawEditBox(this.options, _coords, this.editor_block, this.source_representation.circle_radius * .75, this.editor_$);
-    this.editor_$.show();
-    paper.view.draw();
-}
-
-/* */
-
-Rkns.Renderer.EdgeEditor = Rkns.Utils.inherit(Rkns.Renderer._BaseEditor);
-
-Rkns.Renderer.EdgeEditor.prototype.template = Rkns._.template(
-    '<h2><span class="Rk-CloseX">&times;</span><%-renkan.translate("Edit Edge")%></span></h2>'
-    + '<p><label><%-renkan.translate("Title:")%></label><input class="Rk-Edit-Title" type="text" value="<%-edge.title%>"/></p>'
-    + '<p><label><%-renkan.translate("URI:")%></label><input class="Rk-Edit-URI" type="text" value="<%-edge.uri%>"/><a class="Rk-Edit-Goto" href="<%-edge.uri%>" target="_blank"></a></p>'
-    + '<% if (properties.length) { %><p><label><%-renkan.translate("Choose from vocabulary:")%></label><select class="Rk-Edit-Vocabulary">'
-    + '<% _(properties).each(function(ontology) { %><option class="Rk-Edit-Vocabulary-Class" value=""><%- renkan.translate(ontology.label) %></option>'
-    + '<% _(ontology.properties).each(function(property) { var uri = ontology["base-uri"] + property.uri; %><option class="Rk-Edit-Vocabulary-Property" value="<%- uri %>'
-    + '"<% if (uri === edge.uri) { %> selected<% } %>><%- renkan.translate(property.label) %></option>'
-    + '<% }) %><% }) %></select></p><% } %>'
-    + '<div class="Rk-Editor-p"><span class="Rk-Editor-Label"><%-renkan.translate("Edge color:")%></span><div class="Rk-Edit-ColorPicker-Wrapper"><span class="Rk-Edit-Color" style="background:<%-edge.color%>;"><span class="Rk-Edit-ColorTip"></span></span><ul class="Rk-Edit-ColorPicker">'
-    + '<% _(Rkns.pickerColors).each(function(c) { %><li data-color="<%=c%>" style="background: <%=c%>"></li><% }); %></ul><span class="Rk-Edit-ColorPicker-Text"><%- renkan.translate("Choose color") %></span></div></div>'
-    + '<p><span class="Rk-Edit-Direction"><%- renkan.translate("Change edge direction") %></span></p>'
-    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("From:")%></span><span class="Rk-UserColor" style="background:<%-edge.from_color%>;"></span><%- Rkns.Renderer.shortenText(edge.from_title, 25) %></p>'
-    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("To:")%></span><span class="Rk-UserColor" style="background:<%-edge.to_color%>;"></span><%- Rkns.Renderer.shortenText(edge.to_title, 25) %></p>'
-    + '<% if (edge.has_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-edge.created_by_color%>;"></span><%- Rkns.Renderer.shortenText(edge.created_by_title, 25) %></p><% } %>'
-);
-
-Rkns.Renderer.EdgeEditor.prototype.readOnlyTemplate = Rkns._.template(
-    '<h2><span class="Rk-CloseX">&times;</span><span class="Rk-UserColor" style="background:<%-edge.color%>;"></span>'
-    + '<span class="Rk-Display-Title"><% if (edge.uri) { %><a href="<%-edge.uri%>" target="_blank"><% } %><%-edge.title%><% if (edge.uri) { %></a><% } %></span></h2>'
-    + '<% if (edge.uri) { %><p class="Rk-Display-URI"><a href="<%-edge.uri%>" target="_blank"><%-edge.short_uri%></a></p><% } %>'
-    + '<p><%-edge.description%></p>'
-    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("From:")%></span><span class="Rk-UserColor" style="background:<%-edge.from_color%>;"></span><%- Rkns.Renderer.shortenText(edge.from_title, 25) %></p>'
-    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("To:")%></span><span class="Rk-UserColor" style="background:<%-edge.to_color%>;"></span><%- Rkns.Renderer.shortenText(edge.to_title, 25) %></p>'
-    + '<% if (edge.has_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-edge.created_by_color%>;"></span><%- Rkns.Renderer.shortenText(edge.created_by_title, 25) %></p><% } %>'
-);
-
-Rkns.Renderer.EdgeEditor.prototype.draw = function() {
-    var _model = this.source_representation.model,
-        _from_model = _model.get("from"),
-        _to_model = _model.get("to"),
-        _created_by = _model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan),
-        _template = (this.renderer.isEditable() ? this.template : this.readOnlyTemplate);
-    this.editor_$
-        .html(_template({
-            edge: {
-                has_creator: !!_model.get("created_by"),
-                title: _model.get("title"),
-                uri: _model.get("uri"),
-                short_uri:  Rkns.Renderer.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
-                description: _model.get("description"),
-                color: _model.get("color") || _created_by.get("color"),
-                from_title: _from_model.get("title"),
-                to_title: _to_model.get("title"),
-                from_color: _from_model.get("color") || (_from_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color"),
-                to_color: _to_model.get("color") || (_to_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color"),
-                created_by_color: _created_by.get("color"),
-                created_by_title: _created_by.get("title")
-            },
-            renkan: this.renkan,
-            properties: this.options.properties
-        }));
-    this.redraw();
-    var _this = this,
-        closeEditor = function() {
-            _this.renderer.removeRepresentation(_this);
-            paper.view.draw();
-        }
-    this.editor_$.find(".Rk-CloseX").click(closeEditor);
-    
-    if (this.renderer.isEditable()) {
-        
-        var onFieldChange = Rkns._(function() {
-            Rkns._(function() {
-                if (_this.renderer.isEditable()) {
-                    _this.editor_$.find(".Rk-Edit-Goto").attr("href",_this.editor_$.find(".Rk-Edit-URI").val());
-                    var _data = {
-                        title: _this.editor_$.find(".Rk-Edit-Title").val(),
-                        uri: _this.editor_$.find(".Rk-Edit-URI").val()
-                    }
-                    _model.set(_data);
-                    paper.view.draw();
-                } else {
-                    closeEditor();
-                }
-            }).defer();
-        }).throttle(500);
-        
-        this.editor_$.on("keyup", function(_e) {
-            if (_e.keyCode === 27) {
-                closeEditor();
-            }
-        });
-        
-        this.editor_$.find("input").on("keyup change paste", onFieldChange);
-        
-        this.editor_$.find(".Rk-Edit-Vocabulary").change(function() {
-            var e = $(this),
-                v = e.val();
-            if (v) {
-                _this.editor_$.find(".Rk-Edit-Title").val(e.find(":selected").text());
-                _this.editor_$.find(".Rk-Edit-URI").val(v);
-                onFieldChange();
-            }
-        });
-        this.editor_$.find(".Rk-Edit-Direction").click(function() {
-            if (_this.renderer.isEditable()) {
-                _model.set({
-                    from: _model.get("to"),
-                    to: _model.get("from")
-                });
-                _this.draw();
-            } else {
-                closeEditor();
-            }
-        });
-        
-        var _picker = _this.editor_$.find(".Rk-Edit-ColorPicker");
-        
-        this.editor_$.find(".Rk-Edit-ColorPicker-Wrapper").hover(
-            function(_e) {
-                _e.preventDefault();
-                _picker.show();
-            },
-            function(_e) {
-                _e.preventDefault();
-                _picker.hide();
-            }
-        );
-        
-        _picker.find("li").hover(
-            function(_e) {
-                _e.preventDefault();
-                _this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color"));
-            },
-            function(_e) {
-                _e.preventDefault();
-                _this.editor_$.find(".Rk-Edit-Color").css("background", _model.get("color") || (_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(_this.renkan)).get("color"))
-            }
-        ).click(function(_e) {
-            _e.preventDefault();
-            if (_this.renderer.isEditable()) {
-                _model.set("color", $(this).attr("data-color"));
-                _picker.hide();
-                paper.view.draw();
-            } else {
-                closeEditor();
-            }
-        });
-    }
-}
-
-Rkns.Renderer.EdgeEditor.prototype.redraw = function() {
-    var _coords = this.source_representation.paper_coords;
-    Rkns.Renderer.drawEditBox(this.options, _coords, this.editor_block, 5, this.editor_$);
-    this.editor_$.show();
-    paper.view.draw();
-}
-
-/* */
-
-Rkns.Renderer._NodeButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
-
-Rkns.Renderer._NodeButton.prototype.setSectorSize = function() {
-    var sectorInner = this.source_representation.circle_radius;
-    if (sectorInner !== this.lastSectorInner) {
-        if (this.sector) {
-            this.sector.destroy();
-        }
-        this.sector = this.renderer.drawSector(
-            this, 1 + sectorInner,
-            Rkns.Renderer._NODE_BUTTON_WIDTH + sectorInner,
-            this.startAngle,
-            this.endAngle,
-            1,
-            this.imageName,
-            this.renkan.translate(this.text)
-        );
-        this.lastSectorInner = sectorInner;
-    }
-}
-
-/* */
-
-Rkns.Renderer.NodeEditButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
-
-Rkns.Renderer.NodeEditButton.prototype._init = function() {
-    this.type = "Node-edit-button";
-    this.lastSectorInner = 0;
-    this.startAngle = -135;
-    this.endAngle = -45;
-    this.imageName = "edit";
-    this.text = "Edit";
-}
-
-Rkns.Renderer.NodeEditButton.prototype.mouseup = function() {
-    if (!this.renderer.is_dragging) {
-        this.source_representation.openEditor();
-    }
-}
-
-/* */
-
-Rkns.Renderer.NodeRemoveButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
-
-Rkns.Renderer.NodeRemoveButton.prototype._init = function() {
-    this.type = "Node-remove-button";
-    this.lastSectorInner = 0;
-    this.startAngle = 0;
-    this.endAngle = 90;
-    this.imageName = "remove";
-    this.text = "Remove";
-}
-
-Rkns.Renderer.NodeRemoveButton.prototype.mouseup = function() {
-    this.renderer.click_target = null;
-    this.renderer.is_dragging = false;
-    this.renderer.removeRepresentationsOfType("editor");
-    if (this.renderer.isEditable()) {
-        var delid = Rkns.Utils.getUID("delete");
-        this.renderer.delete_list.push({
-            id: delid,
-            time: new Date().valueOf() + this.options.element_delete_delay
-        });
-        this.source_representation.model.set("delete_scheduled", delid);
-    }
-}
-
-/* */
-
-Rkns.Renderer.NodeRevertButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
-
-Rkns.Renderer.NodeRevertButton.prototype._init = function() {
-    this.type = "Node-revert-button";
-    this.lastSectorInner = 0;
-    this.startAngle = -135;
-    this.endAngle = 135;
-    this.imageName = "revert";
-    this.text = "Cancel deletion";
-}
-
-Rkns.Renderer.NodeRevertButton.prototype.mouseup = function() {
-    this.renderer.click_target = null;
-    this.renderer.is_dragging = false;
-    if (this.renderer.isEditable()) {
-        this.source_representation.model.unset("delete_scheduled");
-    }
-}
-
-/* */
-
-Rkns.Renderer.NodeLinkButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
-
-Rkns.Renderer.NodeLinkButton.prototype._init = function() {
-    this.type = "Node-link-button";
-    this.lastSectorInner = 0;
-    this.startAngle = 90;
-    this.endAngle = 180;
-    this.imageName = "link";
-    this.text = "Link to another node";
-}
-
-Rkns.Renderer.NodeLinkButton.prototype.mousedown = function(_event, _isTouch) {
-    if (this.renderer.isEditable()) {
-        var _off = this.renderer.canvas_$.offset(),
-            _point = new paper.Point([
-                _event.pageX - _off.left,
-                _event.pageY - _off.top
-            ]);
-        this.renderer.click_target = null;
-        this.renderer.removeRepresentationsOfType("editor");
-        this.renderer.addTempEdge(this.source_representation, _point);
-    }
-}
-
-/* */
-
-Rkns.Renderer.NodeEnlargeButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
-
-Rkns.Renderer.NodeEnlargeButton.prototype._init = function() {
-    this.type = "Node-enlarge-button";
-    this.lastSectorInner = 0;
-    this.startAngle = -45;
-    this.endAngle = 0;
-    this.imageName = "enlarge";
-    this.text = "Enlarge";
-}
-
-Rkns.Renderer.NodeEnlargeButton.prototype.mouseup = function() {
-    var _newsize = 1 + (this.source_representation.model.get("size") || 0);
-    this.source_representation.model.set("size", _newsize);
-    this.source_representation.select();
-    this.select();
-    paper.view.draw();
-}
-
-/* */
-
-Rkns.Renderer.NodeShrinkButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
-
-Rkns.Renderer.NodeShrinkButton.prototype._init = function() {
-    this.type = "Node-shrink-button";
-    this.lastSectorInner = 0;
-    this.startAngle = -180;
-    this.endAngle = -135;
-    this.imageName = "shrink";
-    this.text = "Shrink";
-}
-
-Rkns.Renderer.NodeShrinkButton.prototype.mouseup = function() {
-    var _newsize = -1 + (this.source_representation.model.get("size") || 0);
-    this.source_representation.model.set("size", _newsize);
-    this.source_representation.select();
-    this.select();
-    paper.view.draw();
-}
-
-/* */
-
-Rkns.Renderer.EdgeEditButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
-
-Rkns.Renderer.EdgeEditButton.prototype._init = function() {
-    this.type = "Edge-edit-button";
-    this.sector = this.renderer.drawSector(this, Rkns.Renderer._EDGE_BUTTON_INNER, Rkns.Renderer._EDGE_BUTTON_OUTER, -270, -90, 1, "edit", this.renkan.translate("Edit"));
-}
-
-Rkns.Renderer.EdgeEditButton.prototype.mouseup = function() {
-    if (!this.renderer.is_dragging) {
-        this.source_representation.openEditor();
-    }
-}
-
-/* */
-
-Rkns.Renderer.EdgeRemoveButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
-
-Rkns.Renderer.EdgeRemoveButton.prototype._init = function() {
-    this.type = "Edge-remove-button";
-    this.sector = this.renderer.drawSector(this, Rkns.Renderer._EDGE_BUTTON_INNER, Rkns.Renderer._EDGE_BUTTON_OUTER, -90, 90, 1, "remove", this.renkan.translate("Remove"));
-}
-
-Rkns.Renderer.EdgeRemoveButton.prototype.mouseup = function() {
-    this.renderer.click_target = null;
-    this.renderer.is_dragging = false;
-    this.renderer.removeRepresentationsOfType("editor");
-    if (this.renderer.isEditable()) {
-        var delid = Rkns.Utils.getUID("delete");
-        this.renderer.delete_list.push({
-            id: delid,
-            time: new Date().valueOf() + this.options.element_delete_delay
-        });
-        this.source_representation.model.set("delete_scheduled", delid);
-    }
-}
-
-/* */
-
-Rkns.Renderer.EdgeRevertButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
-
-Rkns.Renderer.EdgeRevertButton.prototype._init = function() {
-    this.type = "Edge-revert-button";
-    this.sector = this.renderer.drawSector(this, Rkns.Renderer._EDGE_BUTTON_INNER, Rkns.Renderer._EDGE_BUTTON_OUTER, -135, 135, 1, "revert", this.renkan.translate("Cancel deletion"));
-}
-
-Rkns.Renderer.EdgeRevertButton.prototype.mouseup = function() {
-    this.renderer.click_target = null;
-    this.renderer.is_dragging = false;
-    if (this.renderer.isEditable()) {
-        this.source_representation.model.unset("delete_scheduled");
-    }
-}
-
-/* */
-
-Rkns.Renderer.MiniFrame = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
-
-Rkns.Renderer.MiniFrame.prototype.paperShift = function(_delta) {
-    this.renderer.offset = this.renderer.offset.subtract(_delta.divide(this.renderer.minimap.scale).multiply(this.renderer.scale));
-    this.renderer.redraw();
-}
-
-Rkns.Renderer.MiniFrame.prototype.mouseup = function(_delta) {
-    this.renderer.click_target = null;
-    this.renderer.is_dragging = false;
-}
-
-/* */
-
-Rkns.Renderer.Scene = function(_renkan) {
-    this.renkan = _renkan;
-    this.$ = Rkns.$(".Rk-Render");
-    this.representations = [];
-    this.$.html(this.template(_renkan));
-    this.onStatusChange();
-    this.canvas_$ = this.$.find(".Rk-Canvas");
-    this.labels_$ = this.$.find(".Rk-Labels");
-    this.editor_$ = this.$.find(".Rk-Editor");
-    this.notif_$ = this.$.find(".Rk-Notifications");
-    paper.setup(this.canvas_$[0]);
-    this.scale = 1;
-    this.offset = paper.view.center;
-    this.totalScroll = 0;
-    this.mouse_down = false;
-    this.click_target = null;
-    this.selected_target = null;
-    this.edge_layer = new paper.Layer();
-    this.node_layer = new paper.Layer();
-    this.buttons_layer = new paper.Layer();
-    this.delete_list = [];
-    
-    if (_renkan.options.show_minimap) {
-        this.minimap = {
-            background_layer: new paper.Layer(),
-            edge_layer: new paper.Layer(),
-            node_layer: new paper.Layer(),
-            node_group: new paper.Group(),
-            size: new paper.Size( _renkan.options.minimap_width, _renkan.options.minimap_height )
-        }
-        
-        this.minimap.background_layer.activate();
-        this.minimap.topleft = paper.view.bounds.bottomRight.subtract(this.minimap.size);
-        this.minimap.rectangle = new paper.Path.Rectangle(this.minimap.topleft.subtract([2,2]), this.minimap.size.add([4,4]));
-        this.minimap.rectangle.fillColor = _renkan.options.minimap_background_color;
-        this.minimap.rectangle.strokeColor = _renkan.options.minimap_border_color;
-        this.minimap.rectangle.strokeWidth = 4;
-        this.minimap.offset = new paper.Point(this.minimap.size.divide(2));
-        this.minimap.scale = .1;
-        
-        this.minimap.node_layer.activate();
-        this.minimap.cliprectangle = new paper.Path.Rectangle(this.minimap.topleft, this.minimap.size);
-        this.minimap.node_group.addChild(this.minimap.cliprectangle);
-        this.minimap.node_group.clipped = true;
-        this.minimap.miniframe = new paper.Path.Rectangle(this.minimap.topleft, this.minimap.size);
-        this.minimap.node_group.addChild(this.minimap.miniframe);
-        this.minimap.miniframe.fillColor = '#c0c0ff';
-        this.minimap.miniframe.opacity = .3;
-        this.minimap.miniframe.strokeColor = '#000080';
-        this.minimap.miniframe.strokeWidth = 3;
-        this.minimap.miniframe.__representation = new Rkns.Renderer.MiniFrame(this, null);
-    }
-    
-    this.throttledPaperDraw = Rkns._(function() {
-        paper.view.draw();
-    }).throttle(100);
-    
-    this.bundles = [];
-    this.click_mode = false;
-    
-    var _this = this,
-        _allowScroll = true,
-        _originalScale,
-        _zooming = false,
-        _lastTapDate,
-        _lastTapX,
-        _lastTapY;
-    
-    this.imageCache = {};
-    
-    ['edit', 'remove', 'link', 'enlarge', 'shrink', 'revert' ].forEach(function(imgname) {
-        var img = new Image();
-        img.src = _renkan.options.static_url + 'img/' + imgname + '.png';
-        _this.imageCache[imgname] = img;
-    });
-    
-    var throttledMouseMove = _.throttle(function(_event, _isTouch) {
-        _this.onMouseMove(_event, _isTouch);
-    }, Rkns.Renderer._MOUSEMOVE_RATE);
-    
-    this.canvas_$.on({
-        mousedown: function(_event) {
-            _event.preventDefault();
-            _this.onMouseDown(_event, false);
-        },
-        mousemove: function(_event) {
-            _event.preventDefault();
-            throttledMouseMove(_event, false);
-        },
-        mouseup: function(_event) {
-            _event.preventDefault();
-            _this.onMouseUp(_event, false);
-        },
-        mousewheel: function(_event, _delta) {
-            _event.preventDefault();
-            if (_allowScroll) {
-                _this.onScroll(_event, _delta);
-            }
-        },
-        touchstart: function(_event) {
-            _event.preventDefault();
-            var _touches = _event.originalEvent.touches[0];
-            if (
-                _renkan.options.allow_double_click
-                && new Date() - _lastTap < Rkns.Renderer._DOUBLETAP_DELAY
-                && ( Math.pow(_lastTapX - _touches.pageX, 2) + Math.pow(_lastTapY - _touches.pageY, 2) < Rkns.Renderer._DOUBLETAP_DISTANCE )
-            ) {
-                _lastTap = 0;
-                _this.onDoubleClick(_touches);
-            } else {
-                _lastTap = new Date();
-                _lastTapX = _touches.pageX;
-                _lastTapY = _touches.pageY;
-                _originalScale = _this.scale;
-                _zooming = false;
-                _this.onMouseDown(_touches, true);
-            }
-        },
-        touchmove: function(_event) {
-            _event.preventDefault();
-            _lastTap = 0;
-            if (_event.originalEvent.touches.length == 1) {
-                _this.onMouseMove(_event.originalEvent.touches[0], true);
-            } else {
-                if (!_zooming) {
-                    _this.onMouseUp(_event.originalEvent.touches[0], true);
-                    _this.click_target = null;
-                    _this.is_dragging = false;
-                    _zooming = true;
-                }
-                if (_event.originalEvent.scale === "undefined") {
-                    return;
-                }
-                var _newScale = _event.originalEvent.scale * _originalScale,
-                    _scaleRatio = _newScale / _this.scale,
-                    _newOffset = new paper.Point([
-                        _this.canvas_$.width(),
-                        _this.canvas_$.height()
-                    ]).multiply( .5 * ( 1 - _scaleRatio ) ).add(_this.offset.multiply( _scaleRatio ));
-                _this.setScale(_newScale, _this.offset);
-            }
-        },
-        touchend: function(_event) {
-            _event.preventDefault();
-            _this.onMouseUp(_event.originalEvent.changedTouches[0], true);
-        },
-        dblclick: function(_event) {
-            _event.preventDefault();
-            if (_renkan.options.allow_double_click) {
-                _this.onDoubleClick(_event);
-            }
-        },
-        mouseleave: function(_event) {
-            _event.preventDefault();
-            _this.onMouseUp(_event, false);
-            _this.click_target = null;
-            _this.is_dragging = false;
-        },
-        dragover: function(_event) {
-            _event.preventDefault();
-        },
-        dragenter: function(_event) {
-            _event.preventDefault();
-            _allowScroll = false;
-        },
-        dragleave: function(_event) {
-            _event.preventDefault();
-            _allowScroll = true;
-        },
-        drop: function(_event) {
-            _event.preventDefault();
-            _allowScroll = true;
-            var res = {};
-            Rkns._(_event.originalEvent.dataTransfer.types).each(function(t) {
-                try {
-                    res[t] = _event.originalEvent.dataTransfer.getData(t);
-                } catch(e) {}
-            });
-            var text = _event.originalEvent.dataTransfer.getData("Text");
-            if (typeof text === "string") {
-                switch(text[0]) {
-                    case "{":
-                    case "[":
-                        try {
-                            var data = JSON.parse(text);
-                            _(res).extend(data);
-                        }
-                        catch(e) {
-                            if (!res["text/plain"]) {
-                                res["text/plain"] = text;
-                            }
-                        }
-                    break;
-                    case "<":
-                        if (!res["text/html"]) {
-                            res["text/html"] = text;
-                        }
-                    break;
-                    default:
-                        if (!res["text/plain"]) {
-                            res["text/plain"] = text;
-                        }
-                }
-            }
-            var url = _event.originalEvent.dataTransfer.getData("URL");
-            if (url && !res["text/uri-list"]) {
-                res["text/uri-list"] = url;
-            }
-            _this.dropData(res, _event.originalEvent);
-        }
-    });
-    this.editor_$.find(".Rk-ZoomOut").click(function() {
-        var _newScale = _this.scale * Math.SQRT1_2,
-            _offset = new paper.Point([
-                _this.canvas_$.width(),
-                _this.canvas_$.height()
-            ]).multiply( .5 * ( 1 - Math.SQRT1_2 ) ).add(_this.offset.multiply( Math.SQRT1_2 ));
-        _this.setScale( _newScale, _offset );
-    });
-    this.editor_$.find(".Rk-ZoomIn").click(function() {
-        var _newScale = _this.scale * Math.SQRT2,
-            _offset = new paper.Point([
-                _this.canvas_$.width(),
-                _this.canvas_$.height()
-            ]).multiply( .5 * ( 1 - Math.SQRT2 ) ).add(_this.offset.multiply( Math.SQRT2 ));
-        _this.setScale( _newScale, _offset );
-    });
-    this.$.find(".Rk-CurrentUser").mouseenter(
-        function() { _this.$.find(".Rk-UserList").slideDown() }
-    );
-    this.$.find(".Rk-Users").mouseleave(
-        function() { _this.$.find(".Rk-UserList").slideUp(); }
-    );
-    this.$.find(".Rk-FullScreen-Button").click(function() {
-        var _isFull = document.fullScreen || document.mozFullScreen || document.webkitIsFullScreen,
-            _el = _this.renkan.$[0],
-            _requestMethods = ["requestFullScreen","mozRequestFullScreen","webkitRequestFullScreen"],
-            _cancelMethods = ["cancelFullScreen","mozCancelFullScreen","webkitCancelFullScreen"];
-        if (_isFull) {
-            for (var i = 0; i < _cancelMethods.length; i++) {
-                if (typeof document[_cancelMethods[i]] === "function") {
-                    document[_cancelMethods[i]]();
-                    break;
-                }
-            }
-        } else {
-            for (var i = 0; i < _requestMethods.length; i++) {
-                if (typeof _el[_requestMethods[i]] === "function") {
-                    _el[_requestMethods[i]]();
-                    break;
-                }
-            }
-        }
-    });
-    this.$.find(".Rk-AddNode-Button").click(function() {
-        if (_this.click_mode === Rkns.Renderer._CLICKMODE_ADDNODE) {
-            _this.click_mode = false;
-            _this.notif_$.hide();
-        } else {
-            _this.click_mode = Rkns.Renderer._CLICKMODE_ADDNODE;
-            _this.notif_$.text(_renkan.translate("Click on the background canvas to add a node")).fadeIn();
-        }
-    });
-    this.$.find(".Rk-AddEdge-Button").click(function() {
-        if (_this.click_mode === Rkns.Renderer._CLICKMODE_STARTEDGE || _this.click_mode === Rkns.Renderer._CLICKMODE_ENDEDGE) {
-            _this.click_mode = false;
-            _this.notif_$.hide();
-        } else {
-            _this.click_mode = Rkns.Renderer._CLICKMODE_STARTEDGE;
-            _this.notif_$.text(_renkan.translate("Click on a first node to start the edge")).fadeIn();
-        }
-    });
-    this.$.find(".Rk-Bookmarklet-Button")
-        .attr("href","javascript:" + Rkns.Renderer._BOOKMARKLET_CODE(_renkan))
-        .click(function(){
-            _this.notif_$
-                .text(_renkan.translate("Drag this button to your bookmark bar. When on a third-party website, click it to enable drag-and-drop from the website to Renkan."))
-                .fadeIn()
-                .delay(5000)
-                .fadeOut();
-            return false;
-        });
-    this.$.find(".Rk-TopBar-Button").mouseover(function() {
-        Rkns.$(this).find(".Rk-TopBar-Tooltip").show();
-    }).mouseout(function() {
-        Rkns.$(this).find(".Rk-TopBar-Tooltip").hide();
-    });
-    this.$.find(".Rk-Fold-Bins").click(function() {
-        var bins = _renkan.$.find(".Rk-Bins");
-        if (bins.offset().left < 0) {
-            bins.animate({left: 0},250);
-            _this.$.animate({left: 300},250,function() {
-                var w = _this.$.width();
-                paper.view.viewSize = new paper.Size([w, _this.canvas_$.height()]);
-            });
-            $(this).html("&laquo;");
-        } else {
-            bins.animate({left: -300},250);
-            _this.$.animate({left: 0},250,function() {
-                var w = _this.$.width();
-                paper.view.viewSize = new paper.Size([w, _this.canvas_$.height()]);
-            });
-            $(this).html("&raquo;");
-        }
-    });
-    
-    paper.view.onResize = function(_event) {
-        _this.offset = _this.offset.add(_event.delta.divide(2));
-        if (_this.minimap) {
-            _this.minimap.topleft = paper.view.bounds.bottomRight.subtract(_this.minimap.size)
-            _this.minimap.rectangle.fitBounds(_this.minimap.topleft.subtract([2,2]), _this.minimap.size.add([4,4]));
-            _this.minimap.cliprectangle.fitBounds(_this.minimap.topleft, _this.minimap.size);
-        }
-        _this.redraw();
-    }
-    
-    var _thRedraw = Rkns._.throttle(function() {
-        _this.redraw();
-    },50);
-    
-    this.addRepresentations("Node", this.renkan.project.get("nodes"));
-    this.addRepresentations("Edge", this.renkan.project.get("edges"));
-    this.renkan.project.on("change:title", function() {
-        _this.$.find(".Rk-PadTitle").val(_renkan.project.get("title"));
-    });
-    
-    this.$.find(".Rk-PadTitle").on("keyup input paste", function() {
-        _renkan.project.set({"title": $(this).val()});
-    })
-    
-    this.renkan.project.get("users").each(function(_user) {
-        _this.addUser(_user);
-    });
-    
-    this.renkan.project.on("add:users", function(_user) {
-        _this.addUser(_user);
-    });
-    this.renkan.project.on("add:nodes", function(_node) {
-        _this.addRepresentation("Node", _node);
-        _thRedraw();
-    });
-    this.renkan.project.on("add:edges", function(_edge) {
-        _this.addRepresentation("Edge", _edge);
-        _thRedraw();
-    });
-    this.renkan.project.on("change:title", function(_model, _title) {
-        var el = _this.$.find(".Rk-PadTitle");
-        if (el.is("input")) {
-            if (el.val() !== _title) {
-                el.val(_title);
-            }
-        } else {
-            el.text(_title);
-        }
-    });
-    
-    if (_renkan.options.size_bug_fix) {
-        var _delay = (
-            typeof _renkan.options.size_bug_fix === "number"
-            ? _renkan.options.size_bug_fix
-            : 500
-        );
-        window.setTimeout(
-            function() {
-                _this.fixSize(true);
-            },
-            _delay
-        );
-    }
-    
-    if (_renkan.options.force_resize) {
-        $(window).resize(function() {
-            _this.fixSize(false);
-        });
-    }
-    
-    this.redraw();
-    
-    window.setInterval(function() {
-        var _now = new Date().valueOf();
-        _this.delete_list.forEach(function(d) {
-            if (_now >= d.time) {
-                var el = _renkan.project.get("nodes").findWhere({"delete_scheduled":d.id});
-                if (el) {
-                    project.removeNode(el);
-                }
-                el = _renkan.project.get("edges").findWhere({"delete_scheduled":d.id});
-                if (el) {
-                    project.removeEdge(el);
-                }
-            }
-        });
-        _this.delete_list = _this.delete_list.filter(function(d) {
-            return _renkan.project.get("nodes").findWhere({"delete_scheduled":d.id}) || _renkan.project.get("edges").findWhere({"delete_scheduled":d.id})
-        });
-    }, 500);
-    
-    if (this.minimap) {
-        window.setInterval(function() {
-            _this.rescaleMinimap()
-        }, 2000);
-    }
-
-}
-
-Rkns.Renderer.Scene.prototype.template = Rkns._.template(
-    '<% if (options.show_top_bar) { %><div class="Rk-TopBar"><% if (!options.editor_mode) { %><h2 class="Rk-PadTitle"><%- project.get("title") || translate("Untitled project")%></h2>'
-    + '<% } else { %><input type="text" class="Rk-PadTitle" value="<%- project.get("title") || "" %>" placeholder="<%-translate("Untitled project")%>" /><% } %>'
-    + '<div class="Rk-Users"><div class="Rk-CurrentUser"><span class="Rk-CurrentUser-Color"></span><span class="Rk-CurrentUser-Name">&lt;unknown user&gt;</span></div><ul class="Rk-UserList"></ul></div>'
-    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-FullScreen-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Full Screen")%></div></div></div>'
-    + '<% if (options.editor_mode) { %>'
-    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-AddNode-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Add Node")%></div></div></div>'
-    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-AddEdge-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Add Edge")%></div></div></div>'
-    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-Save-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"> </div></div></div>'
-    + '<div class="Rk-TopBar-Separator"></div><a class="Rk-TopBar-Button Rk-Bookmarklet-Button" href="#"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents">'
-    + '<%-translate("Renkan \'Drag-to-Add\' bookmarklet")%></div></div></a>'
-    + '<div class="Rk-TopBar-Separator"></div>'
-    + '<% } %></div><% } %>'
-    + '<div class="Rk-Editing-Space<% if (!options.show_top_bar) { %> Rk-Editing-Space-Full<% } %>">'
-    + '<div class="Rk-Labels"></div><canvas class="Rk-Canvas" resize></canvas><div class="Rk-Editor"><div class="Rk-Notifications"></div>'
-    + '<% if (options.show_bins) { %><div class="Rk-Fold-Bins">&laquo;</div><% } %>'
-    + '<div class="Rk-ZoomButtons"><div class="Rk-ZoomIn" title="<%-translate("Zoom In")%>"></div><div class="Rk-ZoomOut" title="<%-translate("Zoom Out")%>"></div></div>'
-    + '</div></div>'
-);
-
-Rkns.Renderer.Scene.prototype.fixSize = function(_autoscale) {
-    var w = this.$.width(),
-        h = this.$.height();
-    if (this.renkan.options.show_top_bar) {
-        h -= this.$.find(".Rk-TopBar").height();
-    }
-    this.canvas_$.attr({
-        width: w,
-        height: h
-    });
-    
-    paper.view.viewSize = new paper.Size([w, h]);
-    
-    if (_autoscale) {
-        this.autoScale();
-    }
-}
-
-Rkns.Renderer.Scene.prototype.drawSector = function(_repr, _inR, _outR, _startAngle, _endAngle, _padding, _imgname, _caption) {
-    var _options = this.renkan.options,
-        _startRads = _startAngle * Math.PI / 180,
-        _endRads = _endAngle * Math.PI / 180,
-        _img = this.imageCache[_imgname],
-        _span = _endRads - _startRads,
-        _startdx = - Math.sin(_startRads),
-        _startdy = Math.cos(_startRads),
-        _startXIn = Math.cos(_startRads) * _inR + _padding * _startdx,
-        _startYIn = Math.sin(_startRads) * _inR + _padding * _startdy,
-        _startXOut = Math.cos(_startRads) * _outR + _padding * _startdx,
-        _startYOut = Math.sin(_startRads) * _outR + _padding * _startdy,
-        _enddx = - Math.sin(_endRads),
-        _enddy = Math.cos(_endRads),
-        _endXIn = Math.cos(_endRads) * _inR - _padding * _enddx,
-        _endYIn = Math.sin(_endRads) * _inR - _padding * _enddy,
-        _endXOut = Math.cos(_endRads) * _outR - _padding * _enddx,
-        _endYOut = Math.sin(_endRads) * _outR - _padding * _enddy,
-        _centerR = (_inR + _outR)/2,
-        _centerRads = (_startRads + _endRads) / 2,
-        _centerX = Math.cos(_centerRads) * _centerR,
-        _centerY = Math.sin(_centerRads) * _centerR,
-        _centerXIn = Math.cos(_centerRads) * _inR,
-        _centerXOut = Math.cos(_centerRads) * _outR,
-        _centerYIn = Math.sin(_centerRads) * _inR,
-        _centerYOut = Math.sin(_centerRads) * _outR,
-        _textX = Math.cos(_centerRads) * (_outR + 3),
-        _textY = Math.sin(_centerRads) * (_outR + _options.buttons_label_font_size) + _options.buttons_label_font_size / 2,
-        _segments = [];
-    this.buttons_layer.activate();
-    var _path = new paper.Path();
-    _path.add([_startXIn, _startYIn]);
-    _path.arcTo([_centerXIn, _centerYIn], [_endXIn, _endYIn]);
-    _path.lineTo([_endXOut,  _endYOut]);
-    _path.arcTo([_centerXOut, _centerYOut], [_startXOut, _startYOut]);
-    _path.fillColor = _options.buttons_background;
-    _path.opacity = .5;
-    _path.closed = true;
-    _path.__representation = _repr;
-    var _text = new paper.PointText(_textX,_textY);
-    _text.characterStyle = {
-        fontSize: _options.buttons_label_font_size,
-        fillColor: _options.buttons_label_color
-    };
-    if (_textX > 2) {
-        _text.paragraphStyle.justification = 'left';
-    } else if (_textX < -2) {
-        _text.paragraphStyle.justification = 'right';
-    } else {
-        _text.paragraphStyle.justification = 'center';
-    }
-    _text.visible = false;
-    var _visible = false,
-        _restPos = new paper.Point(-200, -200),
-        _grp = new paper.Group([_path, _text]),
-        _delta = _grp.position,
-        _imgdelta = new paper.Point([_centerX, _centerY]),
-        _currentPos = new paper.Point(0,0);
-    _text.content = _caption;
-    _grp.visible = false;
-    _grp.position = _restPos;
-    var _res = {
-        show: function() {
-            _visible = true;
-            _grp.position = _currentPos.add(_delta);
-            _grp.visible = true;
-        },
-        moveTo: function(_point) {
-            _currentPos = _point;
-            if (_visible) {
-                _grp.position = _point.add(_delta);
-            }
-        },
-        hide: function() {
-            _visible = false;
-            _grp.visible = false;
-            _grp.position = _restPos;
-        },
-        select: function() {
-            _path.opacity = .8;
-            _text.visible = true;
-        },
-        unselect: function() {
-            _path.opacity = .5;
-            _text.visible = false;
-        },
-        destroy: function() {
-            _grp.remove();
-        }
-    }
-    function showImage() {
-        var _raster = new paper.Raster(_img);
-        _raster.position = _imgdelta.add(_grp.position).subtract(_delta);
-        _grp.addChild(_raster);
-    }
-    if (_img.width) {
-        showImage();
-    } else {
-        Rkns.$(_img).on("load",showImage);
-    }
-    
-    return _res
-}
-
-Rkns.Renderer.Scene.prototype.addToBundles = function(_edgeRepr) {
-    var _bundle = Rkns._(this.bundles).find(function(_bundle) {
-        return ( 
-            ( _bundle.from === _edgeRepr.from_representation && _bundle.to === _edgeRepr.to_representation )
-            || ( _bundle.from === _edgeRepr.to_representation && _bundle.to === _edgeRepr.from_representation )
-        );
-    });
-    if (typeof _bundle !== "undefined") {
-        _bundle.edges.push(_edgeRepr)
-    } else {
-        _bundle = {
-            from: _edgeRepr.from_representation,
-            to: _edgeRepr.to_representation,
-            edges: [ _edgeRepr ],
-            getPosition: function(_er) {
-                var _dir = (_er.from_representation === this.from) ? 1 : -1;
-                return _dir * ( Rkns._(this.edges).indexOf(_er) - (this.edges.length - 1) / 2 );
-            }
-        }
-        this.bundles.push(_bundle);
-    }
-    return _bundle;
-}
-
-Rkns.Renderer.Scene.prototype.isEditable = function() {
-    return (this.renkan.options.editor_mode && !this.renkan.read_only)
-}
-
-Rkns.Renderer.Scene.prototype.onStatusChange = function() {
-    var savebtn = this.$.find(".Rk-Save-Button"),
-        tip = savebtn.find(".Rk-TopBar-Tooltip-Contents");
-    if (this.renkan.read_only) {
-        savebtn.removeClass("disabled Rk-Save-Online").addClass("Rk-Save-ReadOnly");
-        tip.text(this.renkan.translate("Connection lost"));
-    } else {
-        if (this.renkan.options.snapshot_mode) {
-            savebtn.removeClass("Rk-Save-ReadOnly Rk-Save-Online");
-            tip.text(this.renkan.translate("Archive Project"));
-        } else {
-            savebtn.removeClass("disabled Rk-Save-ReadOnly").addClass("Rk-Save-Online");
-            tip.text(this.renkan.translate("Auto-save enabled"));
-        }
-    }
-}
-
-Rkns.Renderer.Scene.prototype.setScale = function(_newScale, _offset) {
-    if (_newScale > Rkns.Renderer._MIN_SCALE && _newScale < Rkns.Renderer._MAX_SCALE) {
-        this.scale = _newScale;
-        if (_offset) {
-            this.offset = _offset
-        }
-        this.redraw();
-    }
-}
-
-Rkns.Renderer.Scene.prototype.autoScale = function() {
-    var nodes = this.renkan.project.get("nodes")
-    if (nodes.length > 1) {
-        var _xx = nodes.map(function(_node) { return _node.get("position").x }),
-            _yy = nodes.map(function(_node) { return _node.get("position").y }),
-            _minx = Math.min.apply(Math, _xx),
-            _miny = Math.min.apply(Math, _yy),
-            _maxx = Math.max.apply(Math, _xx),
-            _maxy = Math.max.apply(Math, _yy);
-        var _scale = Math.max(Rkns.Renderer._MIN_SCALE, Math.min(Rkns.Renderer._MAX_SCALE, (paper.view.size.width - 2 * Rkns.Renderer._AUTOSCALE_MARGIN) / (_maxx - _minx), (paper.view.size.height - 2 * Rkns.Renderer._AUTOSCALE_MARGIN) / (_maxy - _miny)));
-        this.setScale(_scale, paper.view.center.subtract(new paper.Point([(_maxx + _minx) / 2, (_maxy + _miny) / 2]).multiply(_scale)));
-    }
-    if (nodes.length === 1) {
-        this.setScale(1, paper.view.center.subtract(new paper.Point([nodes.at(0).get("position").x, nodes.at(0).get("position").y])));
-    }
-}
-
-Rkns.Renderer.Scene.prototype.redrawMiniframe = function() {
-    var topleft = this.toMinimapCoords(this.toModelCoords(new paper.Point([0,0]))),
-        bottomright = this.toMinimapCoords(this.toModelCoords(paper.view.bounds.bottomRight));
-    this.minimap.miniframe.fitBounds(topleft, bottomright);
-}
-
-Rkns.Renderer.Scene.prototype.rescaleMinimap = function() {
-    var nodes = this.renkan.project.get("nodes")
-    if (nodes.length > 1) {
-        var _xx = nodes.map(function(_node) { return _node.get("position").x }),
-            _yy = nodes.map(function(_node) { return _node.get("position").y }),
-            _minx = Math.min.apply(Math, _xx),
-            _miny = Math.min.apply(Math, _yy),
-            _maxx = Math.max.apply(Math, _xx),
-            _maxy = Math.max.apply(Math, _yy);
-        var _scale = Math.min(
-            this.scale * .8 * this.renkan.options.minimap_width / paper.view.bounds.width,
-            this.scale * .8 * this.renkan.options.minimap_height / paper.view.bounds.height,
-            ( this.renkan.options.minimap_width - 2 * Rkns.Renderer._MINIMAP_MARGIN ) / (_maxx - _minx),
-            ( this.renkan.options.minimap_height - 2 * Rkns.Renderer._MINIMAP_MARGIN ) / (_maxy - _miny)
-        );
-        this.minimap.offset = this.minimap.size.divide(2).subtract(new paper.Point([(_maxx + _minx) / 2, (_maxy + _miny) / 2]).multiply(_scale));
-        this.minimap.scale = _scale;
-    }
-    if (nodes.length === 1) {
-        this.minimap.scale = .1;
-        this.minimap.offset = this.minimap.size.divide(2).subtract(new paper.Point([nodes.at(0).get("position").x, nodes.at(0).get("position").y]).multiply(this.minimap.scale));
-    }
-    this.redraw();
-}
-
-Rkns.Renderer.Scene.prototype.toPaperCoords = function(_point) {
-    return _point.multiply(this.scale).add(this.offset);
-}
-
-Rkns.Renderer.Scene.prototype.toMinimapCoords = function(_point) {
-    return _point.multiply(this.minimap.scale).add(this.minimap.offset).add(this.minimap.topleft);
-}
-
-Rkns.Renderer.Scene.prototype.toModelCoords = function(_point) {
-    return _point.subtract(this.offset).divide(this.scale);
-}
-
-Rkns.Renderer.Scene.prototype.addRepresentation = function(_type, _model) {
-    var _repr = new Rkns.Renderer[_type](this, _model);
-    this.representations.push(_repr);
-    return _repr;
-}
-
-Rkns.Renderer.Scene.prototype.addRepresentations = function(_type, _collection) {
-    var _this = this;
-    _collection.forEach(function(_model) {
-        _this.addRepresentation(_type, _model);
-    });
-}
-
-Rkns.Renderer.Scene.prototype.userTemplate = Rkns._.template(
-    '<li class="Rk-User"><span class="Rk-UserColor" style="background:<%=background%>;"></span><%=name%></li>'
-);
-
-Rkns.Renderer.Scene.prototype.addUser = function(_user) {
-    if (_user.get("_id") === this.renkan.current_user) {
-        this.$.find(".Rk-CurrentUser-Name").text(_user.get("title"));
-        this.$.find(".Rk-CurrentUser-Color").css("background", _user.get("color"));
-    } else {
-        this.$.find(".Rk-UserList").append(
-            Rkns.$(
-                this.userTemplate({
-                    name: _user.get("title"),
-                    background: _user.get("color")
-                })
-            )
-        );
-    }
-}
-
-Rkns.Renderer.Scene.prototype.removeRepresentation = function(_representation) {
-    _representation.destroy();
-    this.representations = Rkns._(this.representations).reject(
-        function(_repr) {
-            return _repr == _representation
-        }
-    );
-}
-
-Rkns.Renderer.Scene.prototype.getRepresentationByModel = function(_model) {
-    return Rkns._(this.representations).find(function(_repr) {
-        return _repr.model === _model;
-    });
-}
-
-Rkns.Renderer.Scene.prototype.removeRepresentationsOfType = function(_type) {
-    var _representations = Rkns._(this.representations).filter(function(_repr) {
-            return _repr.type == _type;
-        }),
-        _this = this;
-    Rkns._(_representations).each(function(_repr) {
-        _this.removeRepresentation(_repr);
-    });
-}
-
-Rkns.Renderer.Scene.prototype.highlightModel = function(_model) {
-    var _repr = this.getRepresentationByModel(_model);
-    if (_repr) {
-        _repr.highlight();
-    }
-}
-
-Rkns.Renderer.Scene.prototype.unhighlightAll = function(_model) {
-    Rkns._(this.representations).each(function(_repr) {
-        _repr.unhighlight();
-    });
-}
-
-Rkns.Renderer.Scene.prototype.unselectAll = function(_model) {
-    Rkns._(this.representations).each(function(_repr) {
-        _repr.unselect();
-    });
-}
-
-Rkns.Renderer.Scene.prototype.redraw = function() {
-    Rkns._(this.representations).each(function(_representation) {
-        _representation.redraw(true);
-    });
-    if (this.minimap) {
-        this.redrawMiniframe();
-    }
-    paper.view.draw();
-}
-
-Rkns.Renderer.Scene.prototype.addTempEdge = function(_from, _point) {
-    var _tmpEdge = this.addRepresentation("TempEdge",null);
-    _tmpEdge.end_pos = _point;
-    _tmpEdge.from_representation = _from;
-    _tmpEdge.redraw();
-    this.click_target = _tmpEdge;
-}
-
-Rkns.Renderer.Scene.prototype.findTarget = function(_hitResult) {
-    if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
-        var _newTarget = _hitResult.item.__representation;
-        if (this.selected_target !== _hitResult.item.__representation) {
-            if (this.selected_target) {
-                this.selected_target.unselect(_newTarget);
-            }
-            _newTarget.select(this.selected_target);
-            this.selected_target = _newTarget;
-        }
-    } else {
-        if (this.selected_target) {
-            this.selected_target.unselect();
-        }
-        this.selected_target = null;
-    }
-}
-
-Rkns.Renderer.Scene.prototype.paperShift = function(_delta) {
-    this.offset = this.offset.add(_delta);
-    this.redraw();
-}
-
-Rkns.Renderer.Scene.prototype.onMouseMove = function(_event) {
-    var _off = this.canvas_$.offset(),
-        _point = new paper.Point([
-            _event.pageX - _off.left,
-            _event.pageY - _off.top
-        ]),
-        _delta = _point.subtract(this.last_point);
-    this.last_point = _point;
-    if (!this.is_dragging && this.mouse_down && _delta.length > Rkns.Renderer._MIN_DRAG_DISTANCE) {
-        this.is_dragging = true;
-    }
-    var _hitResult = paper.project.hitTest(_point);
-    if (this.is_dragging) {
-        if (this.click_target && typeof this.click_target.paperShift === "function") {
-            this.click_target.paperShift(_delta);
-        } else {
-            this.paperShift(_delta);
-        }
-    } else {
-        this.findTarget(_hitResult);
-    }
-    paper.view.draw();
-}
-
-Rkns.Renderer.Scene.prototype.onMouseDown = function(_event, _isTouch) {
-    var _off = this.canvas_$.offset(),
-        _point = new paper.Point([
-            _event.pageX - _off.left,
-            _event.pageY - _off.top
-        ]);
-    this.last_point = _point;
-    this.mouse_down = true;
-    if (!this.click_target || this.click_target.type !== "Temp-edge") {
-        this.removeRepresentationsOfType("editor");
-        this.is_dragging = false;
-        var _hitResult = paper.project.hitTest(_point);
-        if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
-            this.click_target = _hitResult.item.__representation;
-            this.click_target.mousedown(_event, _isTouch);
-        } else {
-            this.click_target = null;
-            if (this.isEditable() && this.click_mode === Rkns.Renderer._CLICKMODE_ADDNODE) {
-                var _coords = this.toModelCoords(_point),
-                    _data = {
-                        id: Rkns.Utils.getUID('node'),
-                        created_by: this.renkan.current_user,
-                        position: {
-                            x: _coords.x,
-                            y: _coords.y
-                        }
-                    };
-                    _node = this.renkan.project.addNode(_data);
-                this.getRepresentationByModel(_node).openEditor();
-            }
-        }
-    }
-    if (this.click_mode) {
-        if (this.isEditable() && this.click_mode === Rkns.Renderer._CLICKMODE_STARTEDGE && this.click_target && this.click_target.type === "Node") {
-            this.removeRepresentationsOfType("editor");
-            this.addTempEdge(this.click_target, _point);
-            this.click_mode = Rkns.Renderer._CLICKMODE_ENDEDGE;
-            this.notif_$.fadeOut(function() {
-                Rkns.$(this).html(_renkan.translate("Click on a second node to complete the edge")).fadeIn();
-            });
-        } else {
-            this.notif_$.hide();
-            this.click_mode = false;
-        }
-    }
-    paper.view.draw();
-}
-
-Rkns.Renderer.Scene.prototype.onMouseUp = function(_event, _isTouch) {
-    this.mouse_down = false;
-    if (this.click_target) {
-        var _off = this.canvas_$.offset();
-        this.click_target.mouseup(
-            {
-                point: new paper.Point([
-                    _event.pageX - _off.left,
-                    _event.pageY - _off.top
-                ])
-            },
-            _isTouch
-        );
-    } else {
-        this.click_target = null;
-        this.is_dragging = false;
-        if (_isTouch) {
-            this.unselectAll();
-        }
-    }
-    paper.view.draw();
-}
-
-Rkns.Renderer.Scene.prototype.onScroll = function(_event, _scrolldelta) {
-    this.totalScroll += _scrolldelta;
-    if (Math.abs(this.totalScroll) >= 1) {
-        var _off = this.canvas_$.offset(),
-            _delta = new paper.Point([
-                _event.pageX - _off.left,
-                _event.pageY - _off.top
-            ]).subtract(this.offset).multiply( Math.SQRT2 - 1 );
-        if (this.totalScroll > 0) {
-            this.setScale( this.scale * Math.SQRT2, this.offset.subtract(_delta) );
-        } else {
-            this.setScale( this.scale * Math.SQRT1_2, this.offset.add(_delta.divide(Math.SQRT2)));
-        }
-        this.totalScroll = 0;
-    }
-}
-
-Rkns.Renderer.Scene.prototype.onDoubleClick = function(_event) {
-    if (!this.isEditable()) {
-        return;
-    }
-    var _off = this.canvas_$.offset(),
-        _point = new paper.Point([
-            _event.pageX - _off.left,
-            _event.pageY - _off.top
-        ]);
-    var _hitResult = paper.project.hitTest(_point);
-    if (this.isEditable() && (!_hitResult || typeof _hitResult.item.__representation === "undefined")) {
-        var _coords = this.toModelCoords(_point),
-            _data = {
-                id: Rkns.Utils.getUID('node'),
-                created_by: this.renkan.current_user,
-                position: {
-                    x: _coords.x,
-                    y: _coords.y
-                }
-            };
-            _node = this.renkan.project.addNode(_data);
-            this.getRepresentationByModel(_node).openEditor();
-    }
-    paper.view.draw();
-}
-
-Rkns.Renderer.Scene.prototype.dropData = function(_data, _event) {
-    if (!this.isEditable()) {
-        return;
-    }
-    if (_data["text/json"] || _data["application/json"]) {
-        try {
-            var jsondata = JSON.parse(_data["text/json"] || _data["application/json"]);
-            _(_data).extend(jsondata);
-        }
-        catch(e) {}
-    }
-    var newNode = {};
-    switch(_data["text/x-iri-specific-site"]) {
-        case "twitter":
-            var snippet = Rkns.$('<div>').html(_data["text/x-iri-selected-html"]),
-                tweetdiv = snippet.find(".tweet")
-            newNode.title = _renkan.translate("Tweet by ") + tweetdiv.attr("data-name");
-            newNode.uri = "http://twitter.com/" + tweetdiv.attr("data-screen-name") + "/status/" + tweetdiv.attr("data-tweet-id");
-            newNode.image = tweetdiv.find(".avatar").attr("src");
-            newNode.description = tweetdiv.find(".js-tweet-text:first").text();
-        break;
-        case "google":
-            var snippet = Rkns.$('<div>').html(_data["text/x-iri-selected-html"]);
-            newNode.title = snippet.find("h3:first").text().trim();
-            newNode.uri = snippet.find("h3 a").attr("href");
-            newNode.description = snippet.find(".st:first").text().trim();
-        break;
-        case undefined:
-        default:
-            if (_data["text/x-iri-source-uri"]) {
-                newNode.uri = _data["text/x-iri-source-uri"];
-            }
-            if (_data["text/plain"] || _data["text/x-iri-selected-text"]) {
-                newNode.description = (_data["text/plain"] || _data["text/x-iri-selected-text"]).replace(/[\s\n]+/gm,' ').trim();
-            }
-            if (_data["text/html"] || _data["text/x-iri-selected-html"]) {
-                var snippet = Rkns.$('<div>').html(_data["text/html"] || _data["text/x-iri-selected-html"]);
-                var _imgs = snippet.find("img");
-                if (_imgs.length) {
-                    newNode.image = _imgs[0].src;
-                }
-                var _as = snippet.find("a");
-                if (_as.length) {
-                    newNode.uri = _as[0].href;
-                }
-                newNode.title = snippet.find("[title]").attr("title") || newNode.title;
-                newNode.description = snippet.text().replace(/[\s\n]+/gm,' ').trim();
-            }
-            if (_data["text/uri-list"]) {
-                newNode.uri = _data["text/uri-list"];
-            }
-            if (_data["text/x-moz-url"] && !newNode.title) {
-                newNode.title = (_data["text/x-moz-url"].split("\n")[1] || "").trim();
-                if (newNode.title === newNode.uri) {
-                    newNode.title = false;
-                }
-            }
-            if (_data["text/x-iri-source-title"] && !newNode.title) {
-                newNode.title = _data["text/x-iri-source-title"];
-            }
-            if (_data["text/html"] || _data["text/x-iri-selected-html"]) {
-                newNode.image = snippet.find("[data-image]").attr("data-image") || newNode.image;
-                newNode.uri = snippet.find("[data-uri]").attr("data-uri") || newNode.uri;
-                newNode.title = snippet.find("[data-title]").attr("data-title") || newNode.title;
-                newNode.description = snippet.find("[data-description]").attr("data-description") || newNode.description;
-            }
-    }
-    if (!newNode.title) {
-        newNode.title = this.renkan.translate("Dragged resource");
-    }
-    var fields = ["title", "description", "uri", "image"];
-    for (var i = 0; i < fields.length; i++) {
-        var f = fields[i];
-        if (_data["text/x-iri-" + f] || _data[f]) {
-            newNode[f] = _data["text/x-iri-" + f] || _data[f];
-        }
-        if (newNode[f] === "none" || newNode[f] === "null") {
-            newNode[f] = undefined;
-        }
-    }
-    var _off = this.canvas_$.offset(),
-        _point = new paper.Point([
-            _event.pageX - _off.left,
-            _event.pageY - _off.top
-        ]),
-        _coords = this.toModelCoords(_point),
-        _nodedata = {
-            id: Rkns.Utils.getUID('node'),
-            created_by: this.renkan.current_user,
-            uri: newNode.uri || "",
-            title: newNode.title || "",
-            description: newNode.description || "",
-            image: newNode.image || "",
-            color: newNode.color || undefined,
-            position: {
-                x: _coords.x,
-                y: _coords.y
-            }
-        };
-    var _node = this.renkan.project.addNode(_nodedata),
-        _repr = this.getRepresentationByModel(_node);
-    if (_event.type === "drop") {
-        _repr.openEditor();
-    }
-}
+          /* *********************************************************
+                  File generated on Wed Apr 24 10:49:26 CEST 2013
+          ************************************************************
+                          start of      main.js
+          ********************************************************* */
+
+/* 
+ *  Copyright 2012-2013 Institut de recherche et d'innovation 
+ *  contributor(s) : Yves-Marie Haussonne, Raphael Velt, Samuel Huron
+ *   
+ *  contact@iri.centrepompidou.fr
+ *  http://www.iri.centrepompidou.fr 
+ *   
+ *  This software is a computer program whose purpose is to show and add annotations on a video .
+ *  This software is governed by the CeCILL-C license under French law and
+ *  abiding by the rules of distribution of free software. You can  use, 
+ *  modify and/ or redistribute the software under the terms of the CeCILL-C
+ *  license as circulated by CEA, CNRS and INRIA at the following URL
+ *  "http://www.cecill.info". 
+ *  
+ *  The fact that you are presently reading this means that you have had
+ *  knowledge of the CeCILL-C license and that you accept its terms.
+*/
+
+/* Declaring the Renkan Namespace Rkns and Default values */
+
+if (typeof Rkns !== "object") {
+    Rkns = {};
+}
+
+Rkns.$ = jQuery;
+
+Rkns._ = _;
+
+Rkns.VERSION = '0.2';
+
+Rkns.pickerColors = ["#8f1919", "#a80000", "#d82626", "#ff0000", "#e87c7c", "#ff6565", "#f7d3d3", "#fecccc",
+    "#8f5419", "#a85400", "#d87f26", "#ff7f00", "#e8b27c", "#ffb265", "#f7e5d3", "#fee5cc",
+    "#8f8f19", "#a8a800", "#d8d826", "#feff00", "#e8e87c", "#feff65", "#f7f7d3", "#fefecc",
+    "#198f19", "#00a800", "#26d826", "#00ff00", "#7ce87c", "#65ff65", "#d3f7d3", "#ccfecc",
+    "#198f8f", "#00a8a8", "#26d8d8", "#00feff", "#7ce8e8", "#65feff", "#d3f7f7", "#ccfefe",
+    "#19198f", "#0000a8", "#2626d8", "#0000ff", "#7c7ce8", "#6565ff", "#d3d3f7", "#ccccfe",
+    "#8f198f", "#a800a8", "#d826d8", "#ff00fe", "#e87ce8", "#ff65fe", "#f7d3f7", "#feccfe",
+    "#000000", "#242424", "#484848", "#6d6d6d", "#919191", "#b6b6b6", "#dadada", "#ffffff"];
+
+Rkns._BaseBin = function(_renkan, _opts) {
+    if (typeof _renkan !== "undefined") {
+        this.renkan = _renkan;
+        this.renkan.$.find(".Rk-Bin-Main").hide();
+        this.$ = Rkns.$('<li>')
+            .addClass("Rk-Bin")
+            .appendTo(_renkan.$.find(".Rk-Bin-List"));
+        this.title_icon_$ = Rkns.$('<span>')
+            .addClass("Rk-Bin-Title-Icon")
+            .appendTo(this.$);
+            
+        var _this = this;
+        
+        Rkns.$('<a>')
+            .attr({
+                href: "#",
+                title: _renkan.translate("Close bin")
+            })
+            .addClass("Rk-Bin-Close")
+            .html('&times;')
+            .appendTo(this.$)
+            .click(function() {
+                _this.destroy();
+                if (!_renkan.$.find(".Rk-Bin-Main:visible").length) {
+                    _renkan.$.find(".Rk-Bin-Main:last").slideDown();
+                }
+                _renkan.resizeBins();
+                return false;
+            });
+        Rkns.$('<a>')
+            .attr({
+                href: "#",
+                title: _renkan.translate("Refresh bin")
+            })
+            .addClass("Rk-Bin-Refresh")
+            .appendTo(this.$)
+            .click(function() {
+                _this.refresh();
+                return false;
+            });
+        this.count_$ = Rkns.$('<div>')
+            .addClass("Rk-Bin-Count")
+            .appendTo(this.$);
+        this.title_$ = Rkns.$('<h2>')
+            .addClass("Rk-Bin-Title")
+            .appendTo(this.$);
+        this.main_$ = Rkns.$('<div>')
+            .addClass("Rk-Bin-Main")
+            .appendTo(this.$)
+            .html('<h4 class="Rk-Bin-Loading">' + _renkan.translate("Loading, please wait") + '</h4>');
+        this.title_$.html(_opts.title || '(new bin)');
+        this.renkan.resizeBins();
+        
+        if (_opts.auto_refresh) {
+            window.setInterval(function() {
+                _this.refresh();
+            },_opts.auto_refresh);
+        }
+    }
+};
+
+Rkns._BaseBin.prototype.destroy = function() {
+    this.$.detach();
+    this.renkan.resizeBins();
+};
+
+/* Point of entry */
+
+Rkns.Renkan = function(_opts) {
+    var _this = this;
+    
+    this.options = _.defaults(_opts, Rkns.defaults);
+        
+    Rkns._(this.options.property_files).each(function(f) {
+        Rkns.$.getJSON(f, function(data) {
+            _this.options.properties = _this.options.properties.concat(data);
+        });
+    });
+    
+    this.read_only = this.options.read_only || !this.options.editor_mode;
+
+    this.project = new Rkns.Models.Project();
+    
+    if (typeof this.options.user_id !== "undefined") {
+        this.current_user = this.options.user_id;
+    }
+    this.$ = Rkns.$("#" + this.options.container);
+    this.$
+        .addClass("Rk-Main")
+        .html(this.template(this));
+    this.renderer = new Rkns.Renderer.Scene(this);
+    this.tabs = [];
+    this.search_engines = [];
+
+    this.current_user_list = new Rkns.Models.UsersList();
+    
+    if (!this.options.search.length) {
+        this.$.find(".Rk-Web-Search-Form").detach();
+    } else {
+        var _tmpl = Rkns._.template('<li class="<%= className %>" data-key="<%= key %>"><%= title %></li>'),
+            _select = this.$.find(".Rk-Search-List"),
+            _input = this.$.find(".Rk-Web-Search-Input"),
+            _form = this.$.find(".Rk-Web-Search-Form");
+        Rkns._(this.options.search).each(function(_search, _key) {
+            if (Rkns[_search.type] && Rkns[_search.type].Search) {
+                _this.search_engines.push(new Rkns[_search.type].Search(_this, _search));
+            }
+        });
+        _select.html(
+            Rkns._(this.search_engines).map(function(_search, _key) {
+                return _tmpl({
+                    key: _key,
+                    title: _search.getSearchTitle(),
+                    className: _search.getBgClass()
+                });
+            }).join("")
+        );
+        _select.find("li").click(function() {
+            var _el = Rkns.$(this);
+            _this.setSearchEngine(_el.attr("data-key"));
+            _form.submit();
+        });
+        _form.submit(function() {
+            if (_input.val()) {
+                var _search = _this.search_engine;
+                _search.search(_input.val());
+            }
+            return false;
+        });
+        this.$.find(".Rk-Search-Current").mouseenter(
+            function() { _select.slideDown(); }
+        );
+        this.$.find(".Rk-Search-Select").mouseleave(
+            function() { _select.hide(); }
+        );
+        this.setSearchEngine(0);
+    }
+    Rkns._(this.options.bins).each(function(_bin) {
+        if (Rkns[_bin.type] && Rkns[_bin.type].Bin) {
+            _this.tabs.push(new Rkns[_bin.type].Bin(_this, _bin));
+        }
+    });
+    
+    var elementDropped = false;
+    
+    this.$.find(".Rk-Bins")
+        .on("click",".Rk-Bin-Title,.Rk-Bin-Title-Icon", function() {
+            var _mainDiv = Rkns.$(this).siblings(".Rk-Bin-Main");
+            if (_mainDiv.is(":hidden")) {
+                _this.$.find(".Rk-Bin-Main").slideUp();
+                _mainDiv.slideDown();
+            }
+        }).on("mouseover", ".Rk-Bin-Item", function(_e) {
+            var _t = Rkns.$(this);
+            if (_t && $(_t).attr("data-uri")) {
+                var _models = _this.project.get("nodes").where({
+                    uri: $(_t).attr("data-uri")
+                });
+                Rkns._(_models).each(function(_model) {
+                    _this.renderer.highlightModel(_model);
+                });
+            }
+        }).mouseout(function() {
+            _this.renderer.unhighlightAll();
+        }).on("mousemove", ".Rk-Bin-Item", function(e) {
+            try {
+                this.dragDrop();
+            }
+            catch(err) {}
+        }).on("touchstart", ".Rk-Bin-Item", function(e) {
+            elementDropped = false;
+        }).on("touchmove", ".Rk-Bin-Item", function(e) {
+            e.preventDefault();
+            var touch = e.originalEvent.changedTouches[0],
+                off = _this.renderer.canvas_$.offset(),
+                w = _this.renderer.canvas_$.width(),
+                h = _this.renderer.canvas_$.height();
+            if (touch.pageX >= off.left && touch.pageX < (off.left + w) && touch.pageY >= off.top && touch.pageY < (off.top + h)) {
+                if (elementDropped) {
+                    _this.renderer.onMouseMove(touch, true);
+                } else {
+                    elementDropped = true;
+                    var div = document.createElement('div');
+                    div.appendChild(this.cloneNode(true));
+                    _this.renderer.dropData({"text/html": div.innerHTML}, touch);
+                    _this.renderer.onMouseDown(touch, true);
+                }
+            }
+        }).on("touchend", ".Rk-Bin-Item", function(e) {
+            if (elementDropped) {
+                _this.renderer.onMouseUp(e.originalEvent.changedTouches[0], true);
+            }
+            elementDropped = false;
+        }).on("dragstart", ".Rk-Bin-Item", function(e) {
+            var div = document.createElement('div');
+            div.appendChild(this.cloneNode(true));
+            try {
+                e.originalEvent.dataTransfer.setData("text/html",div.innerHTML);
+            }
+            catch(err) {
+                e.originalEvent.dataTransfer.setData("text",div.innerHTML);
+            }
+        });
+    Rkns.$(window).resize(function() {
+        _this.resizeBins();
+    });
+    
+    this.$.find(".Rk-Bins-Search-Input").on("change keyup paste input", function() {
+       var val = Rkns.$(this).val();
+       Rkns._(_this.tabs).each(function(tab) {
+           tab.render(val);
+       });
+    });
+    this.$.find(".Rk-Bins-Search-Form").submit(function() {
+        return false;
+    });
+};
+
+Rkns.Renkan.prototype.template = Rkns._.template(
+    '<% if (options.show_bins) { %><div class="Rk-Bins"><div class="Rk-Bins-Head"><h2 class="Rk-Bins-Title"><%- translate("Select contents:")%></h2>'
+    + '<form class="Rk-Web-Search-Form Rk-Search-Form"><input class="Rk-Web-Search-Input Rk-Search-Input" type="search" placeholder="<%- translate("Search the Web") %>" />'
+    + '<div class="Rk-Search-Select"><div class="Rk-Search-Current"></div><ul class="Rk-Search-List"></ul></div>'
+    + '<input type="submit" value="" class="Rk-Web-Search-Submit Rk-Search-Submit" title="<%- translate("Search the Web") %>" /></form>'
+    + '<form class="Rk-Bins-Search-Form Rk-Search-Form"><input class="Rk-Bins-Search-Input Rk-Search-Input" type="search" placeholder="<%- translate("Search in Bins") %>" />'
+    + '<input type="submit" value="" class="Rk-Bins-Search-Submit Rk-Search-Submit" title="<%- translate("Search in Bins") %>" /></form></div>'
+    + '<ul class="Rk-Bin-List"></ul></div><% } %><div class="Rk-Render Rk-Render-<% if (options.show_bins) { %>Panel<% } else { %>Full<% } %>"></div>'
+);
+
+Rkns.Renkan.prototype.translate = function(_text) {
+    if (Rkns.i18n[this.options.language] && Rkns.i18n[this.options.language][_text]) {
+        return Rkns.i18n[this.options.language][_text];
+    }
+    if (this.options.language.length > 2 && Rkns.i18n[this.options.language.substr(0,2)] && Rkns.i18n[this.options.language.substr(0,2)][_text]) {
+        return Rkns.i18n[this.options.language.substr(0,2)][_text];
+    }
+    return _text;
+};
+
+Rkns.Renkan.prototype.onStatusChange = function() {
+    this.renderer.onStatusChange();
+};
+
+Rkns.Renkan.prototype.setSearchEngine = function(_key) {
+    this.search_engine = this.search_engines[_key];
+    this.$.find(".Rk-Search-Current").attr("class","Rk-Search-Current " + this.search_engine.getBgClass());
+};
+
+Rkns.Renkan.prototype.resizeBins = function() {
+    var _d = + this.$.find(".Rk-Bins-Head").outerHeight();
+    this.$.find(".Rk-Bin-Title:visible").each(function() {
+        _d += Rkns.$(this).outerHeight();
+    });
+    this.$.find(".Rk-Bin-Main").css({
+        height: this.$.find(".Rk-Bins").height() - _d
+    });
+};
+
+/* Utility functions */
+
+Rkns.Utils = {
+    _ID_AUTO_INCREMENT : 0,
+    _ID_BASE : (function(_d) {
+        
+        function pad(n){return n<10 ? '0'+n : n;}
+        function fillrand(n) {
+            var _res = '';
+            for (var i=0; i<n; i++) {
+                _res += Math.floor(16*Math.random()).toString(16);
+            }
+            return _res;
+        }
+        return _d.getUTCFullYear() + '-'  
+            + pad(_d.getUTCMonth()+1) + '-'  
+            + pad(_d.getUTCDate()) + '-'
+            + fillrand(16);
+        
+    })(new Date()),
+    getUID : function(_base) {
+        
+        var _n = (++this._ID_AUTO_INCREMENT).toString(16),
+            _base = (typeof _base === "undefined" ? "" : _base + "-" );
+        while (_n.length < 4) {
+            _n = '0' + _n;
+        }
+        return _base + this._ID_BASE + '-' + _n;
+        
+    },
+    getFullURL : function(url) {
+        
+        if(typeof(url) == 'undefined' || url == null ) {
+            return "";
+        }
+        if(/https?:\/\//.test(url)) {
+            return url;
+        }
+        var img = new Image();
+        img.src = url;
+        var res = img.src;
+        img.src = null;
+        return res;
+        
+    },
+    inherit : function(_baseClass, _callbefore) {
+        
+        var _class = function(_arg) {
+            if (typeof _callbefore === "function") {
+                _callbefore.apply(this, Array.prototype.slice.call(arguments, 0));
+            }
+            _baseClass.apply(this, Array.prototype.slice.call(arguments, 0));
+            if (typeof this._init == "function" && !this._initialized) {
+                this._init.apply(this, Array.prototype.slice.call(arguments, 0));
+                this._initialized = true;
+            }
+        };
+        Rkns._(_class.prototype).extend(_baseClass.prototype);
+        return _class;
+        
+    }
+};
+
+          /* *********************************************************
+                          end of        main.js
+          ************************************************************
+          ************************************************************
+                          start of      models.js
+          ********************************************************* */
+
+(function() {
+    
+    var root = this;
+        
+    var Backbone = root.Backbone;
+    
+    var Models = root.Rkns.Models = {};
+    
+    
+    Models.getUID = function(obj) {
+        var guid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+            var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
+            return v.toString(16);
+        });
+        return obj.type + "-" + guid; 
+    };
+    
+    
+    var RenkanModel = Backbone.RelationalModel.extend({
+        idAttribute : "_id",
+        constructor: function(options) {
+            
+            if (typeof options !== "undefined") {
+                options._id = options._id || options.id || Models.getUID(this);
+                options.title = options.title || "";
+                options.description = options.description || "";
+                options.uri = options.uri || "";
+                
+                if(typeof this.prepare === "function") {
+                    options = this.prepare(options);
+                }
+            }
+            Backbone.RelationalModel.prototype.constructor.call(this, options);
+        },
+        validate: function() {
+            if(!this.type) {
+                return "object has no type";
+            }
+        },
+        addReference : function(_options, _propName, _list, _id, _default) {
+            var _element = _list.get(_id);
+            if (typeof _element === "undefined" && typeof _default !== "undefined") {
+                _options[_propName ] = _default;
+            }
+            else {
+                _options[_propName ] = _element;
+            }
+        }
+    });
+        
+    // USER
+    var User = Models.User = RenkanModel.extend({
+        type: "user",
+        prepare: function(options) {
+            options.color = options.color || "#666666";
+            return options;
+        },
+        toJSON: function() {
+            return {
+                _id: this.get("_id"),
+                title: this.get("title"),
+                uri: this.get("uri"),
+                description: this.get("description"),
+                color: this.get("color"),
+            };
+        },
+    });
+    
+    // NODE
+    var Node = Models.Node = RenkanModel.extend({
+        type: "node",
+        relations: [{
+            type: Backbone.HasOne,
+            key: "created_by",
+            relatedModel: User
+        }],
+        prepare: function(options) {
+            project = options.project;
+            this.addReference(options, "created_by", project.get("users"), options.created_by, project.current_user);
+            options.description = options.description || "";
+            return options;
+        },
+        toJSON: function() {
+            return {
+                _id: this.get("_id"),
+                title: this.get("title"),
+                uri: this.get("uri"),
+                description: this.get("description"),
+                position: this.get("position"),
+                image: this.get("image"),
+                color: this.get("color"),
+                created_by: this.get("created_by") ? this.get("created_by").get("_id") : null,
+                size: this.get("size")
+            };
+        },
+    });
+    
+    // EDGE
+    var Edge = Models.Edge = RenkanModel.extend({
+        type: "edge",
+        relations: [
+          {
+            type: Backbone.HasOne,
+            key: "created_by",
+            relatedModel: User
+          },
+          {
+            type: Backbone.HasOne,
+            key: "from",
+            relatedModel: Node
+          },
+          {
+            type: Backbone.HasOne,
+            key: "to",
+            relatedModel: Node
+          },
+        ],
+        prepare: function(options) {
+            project = options.project;
+            this.addReference(options, "created_by", project.get("users"), options.created_by, project.current_user);
+            this.addReference(options, "from", project.get("nodes"), options.from);
+            this.addReference(options, "to", project.get("nodes"), options.to);
+            return options;
+        },
+        toJSON: function() {
+            return {
+                _id: this.get("_id"),
+                title: this.get("title"),
+                uri: this.get("uri"),
+                description: this.get("description"),
+                from: this.get("from") ? this.get("from").get("_id") : null,
+                to: this.get("to") ? this.get("to").get("_id") : null,
+                color: this.get("color"),
+                created_by: this.get("created_by") ? this.get("created_by").get("_id") : null
+            };
+        },
+    });
+        
+    // PROJECT
+    var Project = Models.Project = RenkanModel.extend({
+        type: "project",
+        relations: [
+          {
+            type: Backbone.HasMany,
+            key: "users",
+            relatedModel: User,
+            reverseRelation: {
+                key: 'project',
+                includeInJSON: '_id'
+            },
+          },
+          {
+            type: Backbone.HasMany,
+            key: "nodes",
+            relatedModel: Node,
+            reverseRelation: {
+                key: 'project',
+                includeInJSON: '_id'
+            },
+          },
+          {
+            type: Backbone.HasMany,
+            key: "edges",
+            relatedModel: Edge,
+            reverseRelation: {
+                key: 'project',
+                includeInJSON: '_id'
+            },
+          }
+        ],
+        addUser: function(_props, _options) {
+            _props.project = this;
+            var _user = User.findOrCreate(_props);
+            this.get("users").push(_user, _options);
+            return _user;
+        },
+        addNode: function(_props, _options) {
+            _props.project = this;            
+            var _node = Node.findOrCreate(_props);
+            this.get("nodes").push(_node, _options);
+            return _node;
+        },
+        addEdge: function(_props, _options) {
+            _props.project = this;
+            var _edge = Edge.findOrCreate(_props);
+            this.get("edges").push(_edge, _options);
+            return _edge;
+        },
+        removeNode: function(_model) {
+            this.get("nodes").remove(_model);
+        },
+        removeEdge: function(_model) {
+            this.get("edges").remove(_model);
+        },
+        validate: function(options) {
+            var _project = this;
+            _(options.users).each(function(_item) {
+                _item.project = _project;
+            });
+            _(options.nodes).each(function(_item) {
+                _item.project = _project;
+            });
+            _(options.edges).each(function(_item) {
+                _item.project = _project;
+            });
+        },
+        // Add event handler to remove edges when a node is removed
+        initialize: function() {
+            var _this = this;
+            this.on("remove:nodes", function(_node) {
+                _this.get("edges").remove(
+                    _this.get("edges").filter(function(_edge) {
+                        return _edge.get("from") == _node || _edge.get("to") == _node;
+                    })
+                );
+            });
+        }
+    });
+    
+    var RosterUser = Models.RosterUser = Backbone.Model.extend({
+        type: "roster_user",               
+        idAttribute : "_id",
+        
+        constructor: function(options) {
+            
+            if (typeof options !== "undefined") {
+                options._id = options._id || options.id || Models.getUID(this);
+                options.title = options.title || "(untitled " + this.type + ")";
+                options.description = options.description || "";
+                options.uri = options.uri || "";
+                options.project = options.project || null;
+                options.site_id = options.site_id || 0;
+                
+                if(typeof this.prepare === "function") {
+                    options = this.prepare(options);
+                }
+            }
+            Backbone.Model.prototype.constructor.call(this, options);
+        },
+        
+        validate: function() {
+            if(!this.type) {
+                return "object has no type";
+            }
+        },
+        
+        prepare: function(options) {
+            options.color = options.color || "#666666";
+            return options;
+        },
+        
+        toJSON: function() {
+            return {
+                _id: this.get("_id"),
+                title: this.get("title"),
+                uri: this.get("uri"),
+                description: this.get("description"),
+                color: this.get("color"),
+                project: (this.get("project") != null)?this.get("project").get("id"):null,
+                site_id: this.get("site_id")
+            };
+        },
+    });
+    
+    var UsersList = Models.UsersList = Backbone.Collection.extend({
+        model: RosterUser
+    });
+    
+
+}).call(window);
+
+
+          /* *********************************************************
+                          end of        models.js
+          ************************************************************
+          ************************************************************
+                          start of      defaults.js
+          ********************************************************* */
+
+Rkns.defaults = {
+    
+    language: (navigator.language || navigator.userLanguage || "en"),
+        /* GUI Language */
+    container: "renkan",
+        /* GUI Container DOM element ID */
+    search: [],
+        /* List of Search Engines */
+    bins: [],
+           /* List of Bins */
+    static_url: "",
+        /* URL for static resources */
+    show_bins: true,
+        /* Show bins in left column */
+    properties: [],
+        /* Semantic properties for edges */
+    read_only: false,
+        /* Allows editing of renkan without changing the rest of the GUI. Can be switched on/off on the fly to block/enable editing */
+    editor_mode: true,
+        /* Switch for Publish/Edit GUI. If editor_mode is false, read_only will be true.  */
+    snapshot_mode: false,
+        /* In snapshot mode, clicking on the floppy will save a snapshot. Otherwise, it will show the connection status */
+    show_top_bar: true,
+        /* Show the top bar, (title, buttons, users) */
+    default_user_color: "#303030",
+    size_bug_fix: true,
+        /* Resize the canvas after load (fixes a bug on iPad and FF Mac) */
+    force_resize: false,
+    allow_double_click: true,
+        /* Allows Double Click to create a node on an empty background */
+    element_delete_delay: 5000,
+    
+    /* MINI-MAP OPTIONS */
+    
+    show_minimap: true,
+        /* Show a small map at the bottom right */
+    minimap_width: 160,
+    minimap_height: 120,
+    minimap_background_color: "#ffffff",
+    minimap_border_color: "#cccccc",
+    minimap_highlight_color: "#ffff00",
+    minimap_highlight_weight: 5,
+    
+    /* EDGE/NODE COMMON OPTIONS */
+       
+    buttons_background: "#202020",
+    buttons_label_color: "#c000c0",
+    buttons_label_font_size: 9,
+    
+    /* NODE DISPLAY OPTIONS */
+    
+    show_node_circles: true,
+        /* Show circles for nodes */
+    clip_node_images: true,
+        /* Constraint node images to circles */
+    node_size_base: 25,
+    node_stroke_width: 2,
+    selected_node_stroke_width: 4,
+    node_fill_color: "#ffffff",
+    highlighted_node_fill_color: "#ffff00",
+    node_label_distance: 5,
+        /* Vertical distance between node and label */
+    node_label_max_length: 60,
+        /* Maximum displayed text length */
+    label_untitled_nodes: "(untitled)",
+        /* Label to display on untitled nodes */
+    
+    /* EDGE DISPLAY OPTIONS */
+    
+    edge_stroke_width: 2,
+    selected_edge_stroke_width: 4,
+    edge_label_distance: 0,
+    edge_label_max_length: 20,
+    edge_arrow_length: 18,
+    edge_arrow_width: 12,
+    edge_gap_in_bundles: 12,
+    label_untitled_edges: "",
+    
+    /* CONTEXTUAL DISPLAY (TOOLTIP OR EDITOR) OPTIONS */
+   
+    tooltip_width: 275,
+    tooltip_padding: 10,
+    tooltip_margin: 15,
+    tooltip_arrow_length : 20,
+    tooltip_arrow_width : 40,
+    tooltip_top_color: "#f0f0f0",
+    tooltip_bottom_color: "#d0d0d0",
+    tooltip_border_color: "#808080",
+    tooltip_border_width: 1
+    
+};
+
+          /* *********************************************************
+                          end of        defaults.js
+          ************************************************************
+          ************************************************************
+                          start of      i18n.js
+          ********************************************************* */
+
+Rkns.i18n = {
+    fr: {
+        "Edit Node": "Édition d’un nœud",
+        "Edit Edge": "Édition d’un lien",
+        "Title:": "Titre :",
+        "URI:": "URI :",
+        "Description:": "Description :",
+        "From:": "De :",
+        "To:": "Vers :",
+        "Image": "Image",
+        "Image URL:": "URL d'Image",
+        "Choose Image File:": "Choisir un fichier image",
+        "Full Screen": "Mode plein écran",
+        "Add Node": "Ajouter un nœud",
+        "Add Edge": "Ajouter un lien",
+        "Archive Project": "Archiver le projet",
+        "Auto-save enabled": "Enregistrement automatique activé",
+        "Connection lost": "Connexion perdue",
+        "Created by:": "Créé par :",
+        "Zoom In": "Agrandir l’échelle",
+        "Zoom Out": "Rapetisser l’échelle",
+        "Edit": "Éditer",
+        "Remove": "Supprimer",
+        "Cancel deletion": "Annuler la suppression",
+        "Link to another node": "Créer un lien",
+        "Enlarge": "Agrandir",
+        "Shrink": "Rétrécir",
+        "Click on the background canvas to add a node": "Cliquer sur le fond du graphe pour rajouter un nœud",
+        "Click on a first node to start the edge": "Cliquer sur un premier nœud pour commencer le lien",
+        "Click on a second node to complete the edge": "Cliquer sur un second nœud pour terminer le lien",
+        "Twitter": "Twitter",
+        "Wikipedia": "Wikipédia",
+        "Wikipedia in ": "Wikipédia en ",
+        "French": "Français",
+        "English": "Anglais",
+        "Japanese": "Japonais",
+        "Untitled project": "Projet sans titre",
+        "Lignes de Temps": "Lignes de Temps",
+        "Loading, please wait": "Chargement en cours, merci de patienter",
+        "Edge color:": "Couleur :",
+        "Node color:": "Couleur :",
+        "Choose color": "Choisir une couleur",
+        "Change edge direction": "Changer le sens du lien",
+        "Do you really wish to remove node ": "Voulez-vous réellement supprimer le nœud ",
+        "Do you really wish to remove edge ": "Voulez-vous réellement supprimer le lien ",
+        "This file is not an image": "Ce fichier n'est pas une image",
+        "Image size must be under ": "L'image doit peser moins de ",
+        "Size:": "Taille :",
+        "KB": "ko",
+        "Choose from vocabulary:": "Choisir dans un vocabulaire :",
+        "SKOS Documentation properties": "SKOS: Propriétés documentaires",
+        "has note": "a pour note",
+        "has example": "a pour exemple",
+        "has definition": "a pour définition",
+        "SKOS Semantic relations": "SKOS: Relations sémantiques",
+        "has broader": "a pour concept plus large",
+        "has narrower": "a pour concept plus étroit",
+        "has related": "a pour concept apparenté",
+        "Dublin Core Metadata": "Métadonnées Dublin Core",
+        "has contributor": "a pour contributeur",
+        "covers": "couvre",
+        "created by": "créé par",
+        "has date": "a pour date",
+        "published by": "édité par",
+        "has source": "a pour source",
+        "has subject": "a pour sujet",
+        "Dragged resource": "Ressource glisée-déposée",
+        "Search the Web": "Rechercher en ligne",
+        "Search in Bins": "Rechercher dans les chutiers",
+        "Close bin": "Fermer le chutier",
+        "Refresh bin": "Rafraîchir le chutier",
+        "(untitled)": "(sans titre)",
+        "Select contents:": "Sélectionner des contenus :",
+        "Drag items from this website, drop them in Renkan": "Glissez des éléments de ce site web vers Renkan",
+        "Drag this button to your bookmark bar. When on a third-party website, click it to enable drag-and-drop from the website to Renkan.": "Glissez ce bouton vers votre barre de favoris. Ensuite, depuis un site tiers, cliquez dessus pour activer 'Drag-to-Add' puis glissez des éléments de ce site vers Renkan"
+    }
+}
+
+          /* *********************************************************
+                          end of        i18n.js
+          ************************************************************
+          ************************************************************
+                          start of      paper-renderer.js
+          ********************************************************* */
+
+Rkns.Renderer = {
+    _MINIMAP_MARGIN: 20,
+    _MIN_DRAG_DISTANCE: 2,
+    _NODE_BUTTON_WIDTH: 40,
+    _EDGE_BUTTON_INNER: 2,
+    _EDGE_BUTTON_OUTER: 40,
+    _CLICKMODE_ADDNODE : 1,
+    _CLICKMODE_STARTEDGE : 2,
+    _CLICKMODE_ENDEDGE : 3,
+    _IMAGE_MAX_KB : 500,
+    _NODE_SIZE_STEP: Math.LN2/4,
+    _MIN_SCALE: 1/20,
+    _MAX_SCALE: 20,
+    _AUTOSCALE_MARGIN: 50,
+    _MOUSEMOVE_RATE: 80,
+    _DOUBLETAP_DELAY: 800,
+    _DOUBLETAP_DISTANCE: 20*20,
+    _USER_PLACEHOLDER : function(_renkan) {
+        return {
+            color: _renkan.options.default_user_color,
+            title: _renkan.translate("(unknown user)"),
+            get: function(attr) {
+                return this[attr] || false;
+            }
+        };
+    },
+    _BOOKMARKLET_CODE: function(_renkan) {
+        return "(function(a,b,c,d,e,f,h,i,j,k,l,m,n,o,p,q,r){a=document;b=a.body;c=a.location.href;j='draggable';m='text/x-iri-';d=a.createElement('div');d.innerHTML='<p_style=\"position:fixed;top:0;right:0;font:bold_18px_sans-serif;color:#fff;background:#909;padding:10px;z-index:100000;\">"
+        + _renkan.translate("Drag items from this website, drop them in Renkan").replace(/ /g,"_")
+        + "</p>'.replace(/_/g,String.fromCharCode(32));b.appendChild(d);e=[{r:/https?:\\/\\/[^\\/]*twitter\\.com\\//,s:'.tweet',n:'twitter'},{r:/https?:\\/\\/[^\\/]*google\\.[^\\/]+\\//,s:'.g',n:'google'},{r:/https?:\\/\\/[^\\/]*lemonde\\.fr\\//,s:'[data-vr-contentbox]',n:'lemonde'}];f=false;e.forEach(function(g){if(g.r.test(c)){f=g;}});if(f){h=function(){Array.prototype.forEach.call(a.querySelectorAll(f.s),function(i){i[j]=true;k=i.style;k.borderWidth='2px';k.borderColor='#909';k.borderStyle='solid';k.backgroundColor='rgba(200,0,180,.1)';})};window.setInterval(h,500);h();};a.addEventListener('dragstart',function(k){l=k.dataTransfer;l.setData(m+'source-uri',c);l.setData(m+'source-title',a.title);n=k.target;if(f){o=n;while(!o.attributes[j]){o=o.parentNode;if(o==b){break;}}}if(f&&o.attributes[j]){p=o.cloneNode(true);l.setData(m+'specific-site',f.n)}else{q=a.getSelection();if(q.type==='Range'||!q.type){p=q.getRangeAt(0).cloneContents();}else{p=n.cloneNode();}}r=a.createElement('div');r.appendChild(p);l.setData('text/x-iri-selected-text',r.textContent.trim());l.setData('text/x-iri-selected-html',r.innerHTML);},false);})();";
+    },
+    shortenText : function(_text, _maxlength) {
+        return (_text.length > _maxlength ? (_text.substr(0,_maxlength) + '…') : _text);
+    },
+    drawEditBox : function(_options, _coords, _path, _xmargin, _selector) {
+        _selector.css({
+            width: ( _options.tooltip_width - 2* _options.tooltip_padding ),
+        });
+        var _height = _selector.outerHeight() + 2* _options.tooltip_padding,
+            _isLeft = (_coords.x < paper.view.center.x ? 1 : -1),
+            _left = _coords.x + _isLeft * ( _xmargin + _options.tooltip_arrow_length ),
+            _right = _coords.x + _isLeft * ( _xmargin + _options.tooltip_arrow_length + _options.tooltip_width ),
+            _top = _coords.y - _height / 2;
+        if (_top + _height > (paper.view.size.height - _options.tooltip_margin)) {
+            _top = Math.max( paper.view.size.height - _options.tooltip_margin, _coords.y + _options.tooltip_arrow_width / 2 ) - _height;
+        }
+        if (_top < _options.tooltip_margin) {
+            _top = Math.min( _options.tooltip_margin, _coords.y - _options.tooltip_arrow_width / 2 );
+        }
+        var _bottom = _top + _height;
+        _path.segments[0].point
+            = _path.segments[7].point
+            = _coords.add([_isLeft * _xmargin, 0]);
+        _path.segments[1].point.x
+            = _path.segments[2].point.x
+            = _path.segments[5].point.x
+            = _path.segments[6].point.x
+            = _left;
+        _path.segments[3].point.x
+            = _path.segments[4].point.x
+            = _right;
+        _path.segments[2].point.y
+            = _path.segments[3].point.y
+            = _top;
+        _path.segments[4].point.y
+            = _path.segments[5].point.y
+            = _bottom;
+        _path.segments[1].point.y = _coords.y - _options.tooltip_arrow_width / 2;
+        _path.segments[6].point.y = _coords.y + _options.tooltip_arrow_width / 2;
+        _path.closed = true;
+        _path.fillColor = new paper.GradientColor(new paper.Gradient([_options.tooltip_top_color, _options.tooltip_bottom_color]), [0,_top], [0, _bottom]);
+        _selector.css({
+            left: (_options.tooltip_padding + Math.min(_left, _right)),
+            top: (_options.tooltip_padding + _top)
+        });
+        return _path;
+    }
+};
+
+Rkns.Renderer._BaseRepresentation = function(_renderer, _model) {
+    if (typeof _renderer !== "undefined") {
+        this.renderer = _renderer;
+        this.renkan = _renderer.renkan;
+        this.project = _renderer.renkan.project;
+        this.options = _renderer.renkan.options;
+        this.model = _model;
+        if (this.model) {
+            var _this = this;
+            this._changeBinding = function() {
+                _this.redraw();
+            };
+            this._removeBinding = function() {
+                _renderer.removeRepresentation(_this);
+                _(function() {
+                    _renderer.redraw();
+                }).defer();
+            };
+            this._selectBinding = function() {
+                _this.select();
+            };
+            this._unselectBinding = function() {
+                _this.unselect();
+            };
+            this.model.on("change", this._changeBinding );
+            this.model.on("remove", this._removeBinding );
+            this.model.on("select", this._selectBinding );
+            this.model.on("unselect", this._unselectBinding );
+        }
+    }
+};
+
+Rkns.Renderer._BaseRepresentation.prototype.super = function(_func) {
+    Rkns.Renderer._BaseRepresentation.prototype[_func].apply(this, Array.prototype.slice.call(arguments, 1));
+};
+
+Rkns.Renderer._BaseRepresentation.prototype.redraw = function() {};
+
+Rkns.Renderer._BaseRepresentation.prototype.moveTo = function() {};
+
+Rkns.Renderer._BaseRepresentation.prototype.show = function() {};
+
+Rkns.Renderer._BaseRepresentation.prototype.hide = function() {};
+
+Rkns.Renderer._BaseRepresentation.prototype.select = function() {
+    if (this.model) {
+        this.model.trigger("selected");
+    }
+};
+
+Rkns.Renderer._BaseRepresentation.prototype.unselect = function() {
+    if (this.model) {
+        this.model.trigger("unselected");
+    }
+};
+
+Rkns.Renderer._BaseRepresentation.prototype.highlight = function() {};
+
+Rkns.Renderer._BaseRepresentation.prototype.unhighlight = function() {};
+
+Rkns.Renderer._BaseRepresentation.prototype.mousedown = function() {};
+
+Rkns.Renderer._BaseRepresentation.prototype.mouseup = function() {
+    if (this.model) {
+        this.model.trigger("clicked");
+    }
+};
+
+Rkns.Renderer._BaseRepresentation.prototype.destroy = function() {
+    if (this.model) {
+        this.model.off("change", this._changeBinding );
+        this.model.off("remove", this._removeBinding );
+        this.model.off("select", this._selectBinding );
+        this.model.off("unselect", this._unselectBinding );
+    }
+};
+
+/* */
+
+Rkns.Renderer._BaseButton = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer._BaseButton.prototype.moveTo = function(_pos) {
+    this.sector.moveTo(_pos);
+};
+
+Rkns.Renderer._BaseButton.prototype.show = function() {
+    this.sector.show();
+};
+
+Rkns.Renderer._BaseButton.prototype.hide = function() {
+    this.sector.hide();
+};
+
+Rkns.Renderer._BaseButton.prototype.select = function() {
+    this.sector.select();
+};
+
+Rkns.Renderer._BaseButton.prototype.unselect = function(_newTarget) {
+    this.sector.unselect();
+    if (!_newTarget || (_newTarget !== this.source_representation && _newTarget.source_representation !== this.source_representation)) {
+        this.source_representation.unselect();
+    }
+};
+
+Rkns.Renderer._BaseButton.prototype.destroy = function() {
+    this.sector.destroy();
+};
+
+/* */
+
+Rkns.Renderer.Node = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.Node.prototype._init = function() {
+    this.renderer.node_layer.activate();
+    this.type = "Node";
+    this.circle = new paper.Path.Circle([0, 0], 1);
+    this.circle.__representation = this;
+    if (this.options.show_node_circles) {
+        this.circle.strokeWidth = this.options.node_stroke_width;
+        this.h_ratio = 1;
+    } else {
+        this.h_ratio = 0;
+    }
+    this.title = Rkns.$('<div class="Rk-Label">').appendTo(this.renderer.labels_$);
+    if (this.options.editor_mode) {
+        this.normal_buttons = [
+            new Rkns.Renderer.NodeEditButton(this.renderer, null),
+            new Rkns.Renderer.NodeRemoveButton(this.renderer, null),
+            new Rkns.Renderer.NodeLinkButton(this.renderer, null),
+            new Rkns.Renderer.NodeEnlargeButton(this.renderer, null),
+            new Rkns.Renderer.NodeShrinkButton(this.renderer, null)
+        ];
+        this.pending_delete_buttons = [
+            new Rkns.Renderer.NodeRevertButton(this.renderer, null)
+        ];
+        this.all_buttons = this.normal_buttons.concat(this.pending_delete_buttons);
+        for (var i = 0; i < this.all_buttons.length; i++) {
+            this.all_buttons[i].source_representation = this;
+        }
+        this.active_buttons = [];
+    } else {
+        this.active_buttons = this.all_buttons = [];
+    }
+    this.last_circle_radius = 1;
+    
+    if (this.renderer.minimap) {
+        this.renderer.minimap.node_layer.activate();
+        this.minimap_circle = new paper.Path.Circle([0, 0], 1);
+        this.minimap_circle.__representation = this.renderer.minimap.miniframe.__representation;
+        this.renderer.minimap.node_group.addChild(this.minimap_circle);
+    }
+};
+
+Rkns.Renderer.Node.prototype.redraw = function(_dontRedrawEdges) {
+    var _model_coords = new paper.Point(this.model.get("position")),
+        _baseRadius = this.options.node_size_base * Math.exp((this.model.get("size") || 0) * Rkns.Renderer._NODE_SIZE_STEP);
+    if (!this.is_dragging || !this.paper_coords) {
+        this.paper_coords = this.renderer.toPaperCoords(_model_coords);
+    }
+    this.circle_radius = _baseRadius * this.renderer.scale;
+    if (this.last_circle_radius !== this.circle_radius) {
+        this.all_buttons.forEach(function(b) {
+            b.setSectorSize();
+        });
+        var square = new paper.Size(this.circle_radius, this.circle_radius),
+            topleft = this.paper_coords.subtract(square),
+            bounds = new paper.Rectangle(topleft, square.multiply(2));
+        this.circle.fitBounds(bounds);
+        if (this.node_image) {
+            this.node_image.fitBounds(bounds);
+        }
+    } else {
+        this.circle.position = this.paper_coords;
+        if (this.node_image) {
+            this.node_image.position = this.paper_coords;
+        }
+    }
+    this.last_circle_radius = this.circle_radius;
+    
+    var old_act_btn = this.active_buttons;
+    
+    if (this.model.get("delete_scheduled")) {
+        var opacity = .5;
+        this.active_buttons = this.pending_delete_buttons;
+        this.circle.dashArray = [2,2];
+    } else {
+        var opacity = 1;
+        this.active_buttons = this.normal_buttons;
+        this.circle.dashArray = null;
+    }
+    
+    if (this.selected && this.renderer.isEditable()) {
+        if (old_act_btn !== this.active_buttons) {
+            old_act_btn.forEach(function(b) {
+                b.hide();
+            });
+        }
+        this.active_buttons.forEach(function(b) {
+            b.show();
+        });
+    }
+    
+    if (this.node_image) {
+        this.node_image.opacity = this.highlighted ? opacity * .5 : (opacity - .01);
+    }
+    
+    this.circle.fillColor = this.highlighted ? this.options.highlighted_node_fill_color : this.options.node_fill_color;
+    
+    this.circle.opacity = this.options.show_node_circles ? opacity : .01;
+    
+    var _text = this.model.get("title") || this.renkan.translate(this.options.label_untitled_nodes) || "";
+    _text = Rkns.Renderer.shortenText(_text, this.options.node_label_max_length);
+    this.title.text(_text);
+    this.title.css({
+        left: this.paper_coords.x,
+        top: this.paper_coords.y + this.circle_radius * this.h_ratio + this.options.node_label_distance,
+        opacity: opacity
+    });
+    var _color = this.model.get("color") || (this.model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
+    this.circle.strokeColor = _color;
+    var _pc = this.paper_coords;
+    this.all_buttons.forEach(function(b) {
+        b.moveTo(_pc);
+    });
+    var _img = this.model.get("image");
+    if (_img && _img !== this.img) {
+        var _image = new Image(),
+            _this = this;
+        _image.onload = function() {
+            if (_this.node_image) {
+                _this.node_image.remove();
+            }
+            _this.renderer.node_layer.activate();
+            var _ratio = Math.min(2 / _image.width, 2 / _image.height );
+            if (!_this.options.show_node_circles) {
+                _this.h_ratio = Math.min(1, _image.height / _image.width);
+            }
+            var _raster = new paper.Raster(_image);
+            if (_this.options.clip_node_images) {
+                var _clip = new paper.Path.Circle([0, 0], 1);
+                _raster.scale(_ratio);
+                _this.node_image = new paper.Group(_clip, _raster);
+                _this.node_image.opacity = .99;
+                /* This is a workaround to allow clipping at group level
+                 * If opacity was set to 1, paper.js would merge all clipping groups in one (known bug).
+                */
+                _this.node_image.clipped = true;
+                _clip.__representation = _this;
+            } else {
+                _this.node_image = _raster;
+            }
+            _this.node_image.__representation = _this;
+            var square = new paper.Size(_this.circle_radius, _this.circle_radius),
+                topleft = _this.paper_coords.subtract(square),
+                bounds = new paper.Rectangle(topleft, square.multiply(2));
+            _this.node_image.fitBounds(bounds);
+            _this.redraw();
+            paper.view.draw();
+        };
+        _image.src = _img;
+    }
+    this.img = _img;
+    if (this.node_image && !this.img) {
+        this.node_image.remove();
+        delete this.node_image;
+    }
+    
+    if (this.renderer.minimap) {
+        this.minimap_circle.fillColor = _color;
+        var minipos = this.renderer.toMinimapCoords(_model_coords),
+            miniradius = this.renderer.minimap.scale * _baseRadius,
+            minisize = new paper.Size([miniradius, miniradius]);
+        this.minimap_circle.fitBounds(minipos.subtract(minisize), minisize.multiply(2));
+    }
+    
+    if (!_dontRedrawEdges) {
+        Rkns._.each(this.project.get("edges").filter(function (ed) { return ((ed.to === this.model) || (ed.from === this.model));}), function(edge, index, list){
+            var repr = this.renderer.getRepresentationByModel(edge);
+            if(repr != null && typeof repr.from_representation.paper_coords !== "undefined" && typeof repr.to_representation.paper_coords !== "undefined") {
+                repr.redraw();
+            }
+        }, this);
+    }
+
+};
+
+Rkns.Renderer.Node.prototype.paperShift = function(_delta) {
+    if (this.options.editor_mode) {
+        if (!this.renkan.read_only) {
+            this.is_dragging = true;
+            this.paper_coords = this.paper_coords.add(_delta);
+            this.redraw();
+        }
+    } else {
+        this.renderer.paperShift(_delta);
+    }
+};
+
+Rkns.Renderer.Node.prototype.openEditor = function() {
+    this.renderer.removeRepresentationsOfType("editor");
+    var _editor = this.renderer.addRepresentation("NodeEditor",null);
+    _editor.source_representation = this;
+    _editor.draw();
+};
+
+Rkns.Renderer.Node.prototype.select = function() {
+    this.selected = true;
+    this.circle.strokeWidth = this.options.selected_node_stroke_width;
+    if (this.renderer.isEditable()) {
+        this.active_buttons.forEach(function(b) {
+            b.show();
+        });
+    }
+    var _uri = this.model.get("uri");
+    if (_uri) {
+        Rkns.$('.Rk-Bin-Item').each(function() {
+            var _el = Rkns.$(this);
+            if (_el.attr("data-uri") == _uri) {
+                _el.addClass("selected");
+            }
+        });
+    }
+    if (!this.options.editor_mode) {
+        this.openEditor();
+    }
+    
+    if (this.renderer.minimap) {
+        this.minimap_circle.strokeWidth = this.options.minimap_highlight_weight;
+        this.minimap_circle.strokeColor = this.options.minimap_highlight_color;
+    }
+    this.super("select");
+};
+
+Rkns.Renderer.Node.prototype.unselect = function(_newTarget) {
+    if (!_newTarget || _newTarget.source_representation !== this) {
+        this.selected = false;
+        this.all_buttons.forEach(function(b) {
+            b.hide();
+        });
+        this.circle.strokeWidth = this.options.node_stroke_width;
+        Rkns.$('.Rk-Bin-Item').removeClass("selected");
+        if (this.renderer.minimap) {
+            this.minimap_circle.strokeColor = undefined;
+        }
+        this.super("unselect");
+    }
+};
+    
+Rkns.Renderer.Node.prototype.highlight = function() {
+    if (this.highlighted) {
+        return;
+    }
+    this.highlighted = true;
+    this.redraw();
+    this.renderer.throttledPaperDraw();
+};
+
+Rkns.Renderer.Node.prototype.unhighlight = function() {
+    if (!this.highlighted) {
+        return;
+    }
+    this.highlighted = false;
+    this.redraw();
+    this.renderer.throttledPaperDraw();
+};
+
+Rkns.Renderer.Node.prototype.saveCoords = function() {
+    var _coords = this.renderer.toModelCoords(this.paper_coords),
+        _data = {
+            position: {
+                x: _coords.x,
+                y: _coords.y
+            }
+        };
+    if (this.renderer.isEditable()) {
+        this.model.set(_data);
+    }
+};
+
+Rkns.Renderer.Node.prototype.mousedown = function(_event, _isTouch) {
+    if (_isTouch) {
+        this.renderer.unselectAll();
+        this.select();
+    }
+};
+
+Rkns.Renderer.Node.prototype.mouseup = function(_event, _isTouch) {
+    if (this.renderer.is_dragging && this.renderer.isEditable()) {
+        this.saveCoords();
+    } else {
+        if (!_isTouch && !this.model.get("delete_scheduled")) {
+            this.openEditor();
+        }
+        this.model.trigger("clicked");
+    }
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+    this.is_dragging = false;
+};
+
+Rkns.Renderer.Node.prototype.destroy = function(_event) {
+    this.super("destroy");
+    this.all_buttons.forEach(function(b) {
+        b.destroy();
+    });
+    this.circle.remove();
+    this.title.remove();
+    if (this.renderer.minimap) {
+        this.minimap_circle.remove();
+    }
+    if (this.node_image) {
+        this.node_image.remove();
+    }
+};
+
+/* */
+
+Rkns.Renderer.Edge = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.Edge.prototype._init = function() {
+    this.renderer.edge_layer.activate();
+    this.type = "Edge";
+    this.from_representation = this.renderer.getRepresentationByModel(this.model.get("from"));
+    this.to_representation = this.renderer.getRepresentationByModel(this.model.get("to"));
+    this.bundle = this.renderer.addToBundles(this);
+    this.line = new paper.Path();
+    this.line.add([0,0],[0,0],[0,0]);
+    this.line.__representation = this;
+    this.line.strokeWidth = this.options.edge_stroke_width;
+    this.arrow = new paper.Path();
+    this.arrow.add(
+        [ 0, 0 ],
+        [ this.options.edge_arrow_length, this.options.edge_arrow_width / 2 ],
+        [ 0, this.options.edge_arrow_width ]
+    );
+    this.arrow.__representation = this;
+    this.text = Rkns.$('<div class="Rk-Label Rk-Edge-Label">').appendTo(this.renderer.labels_$);
+    this.arrow_angle = 0;
+    if (this.options.editor_mode) {
+        this.normal_buttons = [
+            new Rkns.Renderer.EdgeEditButton(this.renderer, null),
+            new Rkns.Renderer.EdgeRemoveButton(this.renderer, null),
+        ];
+        this.pending_delete_buttons = [
+            new Rkns.Renderer.EdgeRevertButton(this.renderer, null)
+        ];
+        this.all_buttons = this.normal_buttons.concat(this.pending_delete_buttons);
+        for (var i = 0; i < this.all_buttons.length; i++) {
+            this.all_buttons[i].source_representation = this;
+        }
+        this.active_buttons = [];
+    } else {
+        this.active_buttons = this.all_buttons = [];
+    }
+    
+    if (this.renderer.minimap) {
+        this.renderer.minimap.edge_layer.activate();
+        this.minimap_line = new paper.Path();
+        this.minimap_line.add([0,0],[0,0]);
+        this.minimap_line.__representation = this.renderer.minimap.miniframe.__representation;
+        this.minimap_line.strokeWidth = 1;
+    }
+};
+
+Rkns.Renderer.Edge.prototype.redraw = function() {
+    this.from_representation = this.renderer.getRepresentationByModel(this.model.get("from"));
+    this.to_representation = this.renderer.getRepresentationByModel(this.model.get("to"));
+    if (!this.from_representation || !this.to_representation) {
+        return;
+    }
+    var _p0a = this.from_representation.paper_coords,
+        _p1a = this.to_representation.paper_coords,
+        _v = _p1a.subtract(_p0a),
+        _r = _v.length,
+        _u = _v.divide(_r),
+        _ortho = new paper.Point([- _u.y, _u.x]),
+        _group_pos = this.bundle.getPosition(this),
+        _delta = _ortho.multiply( this.options.edge_gap_in_bundles * _group_pos ),
+        _p0b = _p0a.add(_delta), /* Adding a 4 px difference */
+        _p1b = _p1a.add(_delta), /* to differentiate bundled links */
+        _a = _v.angle,
+        _textdelta = _ortho.multiply(this.options.edge_label_distance),
+        _handle = _v.divide(3),
+        _color = this.model.get("color") || this.model.get("color") || (this.model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
+    
+    if (this.model.get("delete_scheduled") || this.from_representation.model.get("delete_scheduled") || this.to_representation.model.get("delete_scheduled")) {
+        var opacity = .5;
+        this.line.dashArray = [2, 2];
+    } else {
+        var opacity = 1;
+        this.line.dashArray = null;
+    }
+    
+    var old_act_btn = this.active_buttons;
+    
+    this.active_buttons = this.model.get("delete_scheduled") ? this.pending_delete_buttons : this.normal_buttons;
+    
+    if (this.selected && this.renderer.isEditable() && old_act_btn !== this.active_buttons) {
+        old_act_btn.forEach(function(b) {
+            b.hide();
+        });
+        this.active_buttons.forEach(function(b) {
+            b.show();
+        });
+    }
+    
+    this.paper_coords = _p0b.add(_p1b).divide(2);
+    this.line.strokeColor = _color;
+    this.line.opacity = opacity;
+    this.line.segments[0].point = _p0a;
+    this.line.segments[1].point = this.paper_coords;
+    this.line.segments[1].handleIn = _handle.multiply(-1);
+    this.line.segments[1].handleOut = _handle;
+    this.line.segments[2].point = _p1a;
+    this.arrow.rotate(_a - this.arrow_angle);
+    this.arrow.fillColor = _color;
+    this.arrow.opacity = opacity;
+    this.arrow.position = this.paper_coords;
+    this.arrow_angle = _a;
+    if (_a > 90) {
+        _a -= 180;
+        _textdelta = _textdelta.multiply(-1);
+    }
+    if (_a < -90) {
+        _a += 180;
+        _textdelta = _textdelta.multiply(-1);
+    }
+    var _text = this.model.get("title") || this.renkan.translate(this.options.label_untitled_edges) || "";
+    _text = Rkns.Renderer.shortenText(_text, this.options.node_label_max_length);
+    this.text.text(_text);
+    var _textpos = this.paper_coords.add(_textdelta);
+    this.text.css({
+        left: _textpos.x,
+        top: _textpos.y,
+        transform: "rotate(" + _a + "deg)",
+        "-moz-transform": "rotate(" + _a + "deg)",
+        "-webkit-transform": "rotate(" + _a + "deg)",
+        opacity: opacity
+    });
+    this.text_angle = _a;
+    
+    var _pc = this.paper_coords;
+    this.all_buttons.forEach(function(b) {
+        b.moveTo(_pc);
+    });
+    
+    if (this.renderer.minimap) {
+        this.minimap_line.strokeColor = _color;
+        this.minimap_line.segments[0].point = this.renderer.toMinimapCoords(new paper.Point(this.from_representation.model.get("position")));
+         this.minimap_line.segments[1].point = this.renderer.toMinimapCoords(new paper.Point(this.to_representation.model.get("position")));
+    }
+};
+
+Rkns.Renderer.Edge.prototype.openEditor = function() {
+    this.renderer.removeRepresentationsOfType("editor");
+    var _editor = this.renderer.addRepresentation("EdgeEditor",null);
+    _editor.source_representation = this;
+    _editor.draw();
+};
+
+Rkns.Renderer.Edge.prototype.select = function() {
+    this.selected = true;
+    this.line.strokeWidth = this.options.selected_edge_stroke_width;
+    if (this.renderer.isEditable()) {
+        this.active_buttons.forEach(function(b) {
+            b.show();
+        });
+    }
+    if (!this.options.editor_mode) {
+        this.openEditor();
+    }
+    this.super("select");
+};
+
+Rkns.Renderer.Edge.prototype.unselect = function(_newTarget) {
+    if (!_newTarget || _newTarget.source_representation !== this) {
+        this.selected = false;
+        if (this.options.editor_mode) {
+            this.all_buttons.forEach(function(b) {
+                b.hide();
+            });
+        }
+        this.line.strokeWidth = this.options.edge_stroke_width;
+        this.super("unselect");
+    }
+};
+
+Rkns.Renderer.Edge.prototype.mousedown = function(_event, _isTouch) {
+    if (_isTouch) {
+        this.renderer.unselectAll();
+        this.select();
+    }
+};
+
+Rkns.Renderer.Edge.prototype.mouseup = function(_event, _isTouch) {
+    if (!this.renkan.read_only && this.renderer.is_dragging) {
+        this.from_representation.saveCoords();
+        this.to_representation.saveCoords();
+        this.from_representation.is_dragging = false;
+        this.to_representation.is_dragging = false;
+    } else {
+        if (!_isTouch) {
+            this.openEditor();
+        }
+        this.model.trigger("clicked");
+    }
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+};
+
+Rkns.Renderer.Edge.prototype.paperShift = function(_delta) {
+    if (this.options.editor_mode) {
+        if (!this.options.read_only) {
+            this.from_representation.paperShift(_delta);
+            this.to_representation.paperShift(_delta);
+        }
+    } else {
+        this.renderer.paperShift(_delta);
+    }
+};
+
+Rkns.Renderer.Edge.prototype.destroy = function() {
+    this.super("destroy");
+    this.line.remove();
+    this.arrow.remove();
+    this.text.remove();
+    if (this.renderer.minimap) {
+        this.minimap_line.remove();
+    }
+    this.all_buttons.forEach(function(b) {
+        b.destroy();
+    });
+    var _this = this;
+    this.bundle.edges = Rkns._(this.bundle.edges).reject(function(_edge) {
+        return _edge === _this;
+    });
+};
+
+/* */
+
+Rkns.Renderer.TempEdge = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.TempEdge.prototype._init = function() {
+    this.renderer.edge_layer.activate();
+    this.type = "Temp-edge";
+    
+    var _color = (this.project.get("users").get(this.renkan.current_user) || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color");
+    this.line = new paper.Path();
+    this.line.strokeColor = _color;
+    this.line.dashArray = [4, 2];
+    this.line.strokeWidth = this.options.selected_edge_stroke_width;
+    this.line.add([0,0],[0,0]);
+    this.line.__representation = this;
+    this.arrow = new paper.Path();
+    this.arrow.fillColor = _color;
+    this.arrow.add(
+        [ 0, 0 ],
+        [ this.options.edge_arrow_length, this.options.edge_arrow_width / 2 ],
+        [ 0, this.options.edge_arrow_width ]
+    );
+    this.arrow.__representation = this;
+    this.arrow_angle = 0;
+};
+
+Rkns.Renderer.TempEdge.prototype.redraw = function() {
+    var _p0 = this.from_representation.paper_coords,
+        _p1 = this.end_pos,
+        _a = _p1.subtract(_p0).angle,
+        _c = _p0.add(_p1).divide(2);
+    this.line.segments[0].point = _p0;
+    this.line.segments[1].point = _p1;
+    this.arrow.rotate(_a - this.arrow_angle);
+    this.arrow.position = _c;
+    this.arrow_angle = _a;
+};
+
+Rkns.Renderer.TempEdge.prototype.paperShift = function(_delta) {
+    if (!this.renderer.isEditable()) {
+        this.renderer.removeRepresentation(_this);
+        paper.view.draw();
+        return;
+    }
+    this.end_pos = this.end_pos.add(_delta);
+    var _hitResult = paper.project.hitTest(this.end_pos);
+    this.renderer.findTarget(_hitResult);
+    this.redraw();
+};
+
+Rkns.Renderer.TempEdge.prototype.mouseup = function(_event, _isTouch) {
+    var _hitResult = paper.project.hitTest(_event.point),
+        _model = this.from_representation.model,
+        _endDrag = true;
+    if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
+        var _target = _hitResult.item.__representation;
+        if (_target.type.substr(0,4) === "Node") {
+            var _destmodel = _target.model || _target.source_representation.model;
+            if (_model !== _destmodel) {
+                var _data = {
+                    id: Rkns.Utils.getUID('edge'),
+                    created_by: this.renkan.current_user,
+                    from: _model,
+                    to: _destmodel
+                };
+                if (this.renderer.isEditable()) {
+                    this.project.addEdge(_data);
+                }
+            }
+        }
+        
+        if (_model === _target.model || (_target.source_representation && _target.source_representation.model === _model)) {
+            _endDrag = false;
+            this.renderer.is_dragging = true;
+        }
+    }
+    if (_endDrag) {
+        this.renderer.click_target = null;
+        this.renderer.is_dragging = false;
+        this.renderer.removeRepresentation(this);
+        paper.view.draw();
+    }
+};
+
+Rkns.Renderer.TempEdge.prototype.destroy = function() {
+    this.arrow.remove();
+    this.line.remove();
+};
+
+/* */
+
+Rkns.Renderer._BaseEditor = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer._BaseEditor.prototype._init = function() {
+    this.renderer.buttons_layer.activate();
+    this.type = "editor";
+    this.editor_block = new paper.Path();
+    var _pts = Rkns._(Rkns._.range(8)).map(function() {return [0,0];});
+    this.editor_block.add.apply(this.editor_block, _pts);
+    this.editor_block.strokeWidth = this.options.tooltip_border_width;
+    this.editor_block.strokeColor = this.options.tooltip_border_color;
+    this.editor_block.opacity = .8;
+    this.editor_$ = Rkns.$('<div>')
+        .appendTo(this.renderer.editor_$)
+        .css({
+            position: "absolute",
+            opacity: .8
+        })
+        .hide();
+};
+
+Rkns.Renderer._BaseEditor.prototype.destroy = function() {
+    this.editor_block.remove();
+    this.editor_$.remove();
+};
+
+/* */
+
+Rkns.Renderer.NodeEditor = Rkns.Utils.inherit(Rkns.Renderer._BaseEditor);
+
+Rkns.Renderer.NodeEditor.prototype.template = Rkns._.template(
+    '<h2><span class="Rk-CloseX">&times;</span><%-renkan.translate("Edit Node")%></span></h2>'
+    + '<p><label><%-renkan.translate("Title:")%></label><input class="Rk-Edit-Title" type="text" value="<%-node.title%>"/></p>'
+    + '<p><label><%-renkan.translate("URI:")%></label><input class="Rk-Edit-URI" type="text" value="<%-node.uri%>"/><a class="Rk-Edit-Goto" href="<%-node.uri%>" target="_blank"></a></p>'
+    + '<p><label><%-renkan.translate("Description:")%></label><textarea class="Rk-Edit-Description"><%-node.description%></textarea></p>'
+    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("Size:")%></span><a href="#" class="Rk-Edit-Size-Down">-</a><span class="Rk-Edit-Size-Value"><%-node.size%></span><a href="#" class="Rk-Edit-Size-Up">+</a></p>'
+    + '<div class="Rk-Editor-p"><span class="Rk-Editor-Label"><%-renkan.translate("Node color:")%></span><div class="Rk-Edit-ColorPicker-Wrapper"><span class="Rk-Edit-Color" style="background:<%-node.color%>;"><span class="Rk-Edit-ColorTip"></span></span><ul class="Rk-Edit-ColorPicker">'
+    + '<% _(Rkns.pickerColors).each(function(c) { %><li data-color="<%=c%>" style="background: <%=c%>"></li><% }); %></ul><span class="Rk-Edit-ColorPicker-Text"><%- renkan.translate("Choose color") %></span></div></div>'
+    + '<img class="Rk-Edit-ImgPreview" src="<%-node.image || node.image_placeholder%>" />'
+    + '<p><label><%-renkan.translate("Image URL:")%></label><input class="Rk-Edit-Image" type="text" value="<%-node.image%>"/></p>'
+    + '<p><label><%-renkan.translate("Choose Image File:")%></label><input class="Rk-Edit-Image-File" type="file" accept="image/*"/></p>'    
+    + '<% if (node.has_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span> <span class="Rk-UserColor" style="background:<%-node.created_by_color%>;"></span><%- Rkns.Renderer.shortenText(node.created_by_title, 25) %></p><% } %>'
+);
+
+Rkns.Renderer.NodeEditor.prototype.readOnlyTemplate = Rkns._.template(
+    '<h2><span class="Rk-CloseX">&times;</span><span class="Rk-UserColor" style="background:<%-node.color%>;"></span>'
+    + '<span class="Rk-Display-Title"><% if (node.uri) { %><a href="<%-node.uri%>" target="_blank"><% } %><%-node.title%><% if (node.uri) { %></a><% } %></span></h2>'
+    + '<% if (node.uri) { %><p class="Rk-Display-URI"><a href="<%-node.uri%>" target="_blank"><%-node.short_uri%></a></p><% } %>'
+    + '<p><%-node.description%></p>'
+    + '<% if (node.image) { %><img class="Rk-Display-ImgPreview" src="<%-node.image%>" /><% } %>'
+    + '<% if (node.has_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-node.created_by_color%>;"></span><%- Rkns.Renderer.shortenText(node.created_by_title, 25) %></p><% } %>'
+);
+
+Rkns.Renderer.NodeEditor.prototype.draw = function() {
+    var _model = this.source_representation.model,
+        _created_by = _model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan),
+        _template = (this.renderer.isEditable() ? this.template : this.readOnlyTemplate ),
+        _image_placeholder = this.options.static_url + "img/image-placeholder.png",
+        _size = (_model.get("size") || 0);
+    this.editor_$
+        .html(_template({
+            node: {
+                has_creator: !!_model.get("created_by"),
+                title: _model.get("title"),
+                uri: _model.get("uri"),
+                short_uri:  Rkns.Renderer.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
+                description: _model.get("description"),
+                image: _model.get("image") || "",
+                image_placeholder: _image_placeholder,
+                color: _model.get("color") || _created_by.get("color"),
+                created_by_color: _created_by.get("color"),
+                created_by_title: _created_by.get("title"),
+                size: (_size > 0 ? "+" : "") + _size
+            },
+            renkan: this.renkan
+        }));
+    this.redraw();
+    var _this = this,
+        closeEditor = function() {
+            _this.renderer.removeRepresentation(_this);
+            paper.view.draw();
+        };
+        
+    this.editor_$.find(".Rk-CloseX").click(closeEditor);
+    
+    if (this.renderer.isEditable()) {
+        
+        var onFieldChange = Rkns._(function() {
+            Rkns._(function() {
+                if (_this.renderer.isEditable()) {
+                    var _uri = _this.editor_$.find(".Rk-Edit-URI").val(),
+                        _image = _this.editor_$.find(".Rk-Edit-Image").val();
+                    _this.editor_$.find(".Rk-Edit-ImgPreview").attr("src", _image || _image_placeholder);
+                    _this.editor_$.find(".Rk-Edit-Goto").attr("href",_uri);
+                    var _data = {
+                        title: _this.editor_$.find(".Rk-Edit-Title").val(),
+                        description: _this.editor_$.find(".Rk-Edit-Description").val(),
+                        uri: _uri,
+                        image: _image
+                    };
+                    _model.set(_data);
+                    _this.redraw();
+                } else {
+                    closeEditor();
+                }
+                
+            }).defer();
+        }).throttle(500);
+        
+        this.editor_$.on("keyup", function(_e) {
+            if (_e.keyCode === 27) {
+                closeEditor();
+            }
+        });
+        
+        this.editor_$.find("input, textarea").on("change keyup paste", onFieldChange);
+        
+        this.editor_$.find(".Rk-Edit-Image-File").change(function() {
+            if (this.files.length) {
+                var f = this.files[0],
+                    fr = new FileReader();
+                if (f.type.substr(0,5) !== "image") {
+                    alert(_this.renkan.translate("This file is not an image"));
+                    return;
+                }
+                if (f.size > (Rkns.Renderer._IMAGE_MAX_KB * 1024)) {
+                    alert(_this.renkan.translate("Image size must be under ")+Rkns.Renderer._IMAGE_MAX_KB+_this.renkan.translate("KB"));
+                    return;
+                }
+                fr.onload = function(e) {
+                    _this.editor_$.find(".Rk-Edit-Image").val(e.target.result);
+                    onFieldChange();
+                };
+                fr.readAsDataURL(f);
+            }
+        });
+        this.editor_$.find(".Rk-Edit-Title")[0].focus();
+        
+        var _picker = _this.editor_$.find(".Rk-Edit-ColorPicker");
+        
+        this.editor_$.find(".Rk-Edit-ColorPicker-Wrapper").hover(
+            function(_e) {
+                _e.preventDefault();
+                _picker.show();
+            },
+            function(_e) {
+                _e.preventDefault();
+                _picker.hide();
+            }
+        );
+        
+        _picker.find("li").hover(
+            function(_e) {
+                _e.preventDefault();
+                _this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color"));
+            },
+            function(_e) {
+                _e.preventDefault();
+                _this.editor_$.find(".Rk-Edit-Color").css("background", _model.get("color") || (_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(_this.renkan)).get("color"));
+            }
+        ).click(function(_e) {
+            _e.preventDefault();
+            if (_this.renderer.isEditable()) {
+                _model.set("color", $(this).attr("data-color"));
+                _picker.hide();
+                paper.view.draw();
+            } else {
+                closeEditor();
+            }
+        });
+        
+        function shiftSize(n) {
+            if (_this.renderer.isEditable()) {
+                var _newsize = n+(_model.get("size") || 0);
+                _this.editor_$.find(".Rk-Edit-Size-Value").text((_newsize > 0 ? "+" : "") + _newsize);
+                _model.set("size", _newsize);
+                paper.view.draw();
+            } else {
+                closeEditor();
+            }
+        }
+        
+        this.editor_$.find(".Rk-Edit-Size-Down").click(function() {
+            shiftSize(-1);
+            return false;
+        });
+        this.editor_$.find(".Rk-Edit-Size-Up").click(function() {
+            shiftSize(1);
+            return false;
+        });
+    }
+    this.editor_$.find("img").load(function() {
+        _this.redraw();
+    });
+};
+
+Rkns.Renderer.NodeEditor.prototype.redraw = function() {
+    var _coords = this.source_representation.paper_coords;
+    Rkns.Renderer.drawEditBox(this.options, _coords, this.editor_block, this.source_representation.circle_radius * .75, this.editor_$);
+    this.editor_$.show();
+    paper.view.draw();
+};
+
+/* */
+
+Rkns.Renderer.EdgeEditor = Rkns.Utils.inherit(Rkns.Renderer._BaseEditor);
+
+Rkns.Renderer.EdgeEditor.prototype.template = Rkns._.template(
+    '<h2><span class="Rk-CloseX">&times;</span><%-renkan.translate("Edit Edge")%></span></h2>'
+    + '<p><label><%-renkan.translate("Title:")%></label><input class="Rk-Edit-Title" type="text" value="<%-edge.title%>"/></p>'
+    + '<p><label><%-renkan.translate("URI:")%></label><input class="Rk-Edit-URI" type="text" value="<%-edge.uri%>"/><a class="Rk-Edit-Goto" href="<%-edge.uri%>" target="_blank"></a></p>'
+    + '<% if (properties.length) { %><p><label><%-renkan.translate("Choose from vocabulary:")%></label><select class="Rk-Edit-Vocabulary">'
+    + '<% _(properties).each(function(ontology) { %><option class="Rk-Edit-Vocabulary-Class" value=""><%- renkan.translate(ontology.label) %></option>'
+    + '<% _(ontology.properties).each(function(property) { var uri = ontology["base-uri"] + property.uri; %><option class="Rk-Edit-Vocabulary-Property" value="<%- uri %>'
+    + '"<% if (uri === edge.uri) { %> selected<% } %>><%- renkan.translate(property.label) %></option>'
+    + '<% }) %><% }) %></select></p><% } %>'
+    + '<div class="Rk-Editor-p"><span class="Rk-Editor-Label"><%-renkan.translate("Edge color:")%></span><div class="Rk-Edit-ColorPicker-Wrapper"><span class="Rk-Edit-Color" style="background:<%-edge.color%>;"><span class="Rk-Edit-ColorTip"></span></span><ul class="Rk-Edit-ColorPicker">'
+    + '<% _(Rkns.pickerColors).each(function(c) { %><li data-color="<%=c%>" style="background: <%=c%>"></li><% }); %></ul><span class="Rk-Edit-ColorPicker-Text"><%- renkan.translate("Choose color") %></span></div></div>'
+    + '<p><span class="Rk-Edit-Direction"><%- renkan.translate("Change edge direction") %></span></p>'
+    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("From:")%></span><span class="Rk-UserColor" style="background:<%-edge.from_color%>;"></span><%- Rkns.Renderer.shortenText(edge.from_title, 25) %></p>'
+    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("To:")%></span><span class="Rk-UserColor" style="background:<%-edge.to_color%>;"></span><%- Rkns.Renderer.shortenText(edge.to_title, 25) %></p>'
+    + '<% if (edge.has_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-edge.created_by_color%>;"></span><%- Rkns.Renderer.shortenText(edge.created_by_title, 25) %></p><% } %>'
+);
+
+Rkns.Renderer.EdgeEditor.prototype.readOnlyTemplate = Rkns._.template(
+    '<h2><span class="Rk-CloseX">&times;</span><span class="Rk-UserColor" style="background:<%-edge.color%>;"></span>'
+    + '<span class="Rk-Display-Title"><% if (edge.uri) { %><a href="<%-edge.uri%>" target="_blank"><% } %><%-edge.title%><% if (edge.uri) { %></a><% } %></span></h2>'
+    + '<% if (edge.uri) { %><p class="Rk-Display-URI"><a href="<%-edge.uri%>" target="_blank"><%-edge.short_uri%></a></p><% } %>'
+    + '<p><%-edge.description%></p>'
+    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("From:")%></span><span class="Rk-UserColor" style="background:<%-edge.from_color%>;"></span><%- Rkns.Renderer.shortenText(edge.from_title, 25) %></p>'
+    + '<p><span class="Rk-Editor-Label"><%-renkan.translate("To:")%></span><span class="Rk-UserColor" style="background:<%-edge.to_color%>;"></span><%- Rkns.Renderer.shortenText(edge.to_title, 25) %></p>'
+    + '<% if (edge.has_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-edge.created_by_color%>;"></span><%- Rkns.Renderer.shortenText(edge.created_by_title, 25) %></p><% } %>'
+);
+
+Rkns.Renderer.EdgeEditor.prototype.draw = function() {
+    var _model = this.source_representation.model,
+        _from_model = _model.get("from"),
+        _to_model = _model.get("to"),
+        _created_by = _model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan),
+        _template = (this.renderer.isEditable() ? this.template : this.readOnlyTemplate);
+    this.editor_$
+        .html(_template({
+            edge: {
+                has_creator: !!_model.get("created_by"),
+                title: _model.get("title"),
+                uri: _model.get("uri"),
+                short_uri:  Rkns.Renderer.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
+                description: _model.get("description"),
+                color: _model.get("color") || _created_by.get("color"),
+                from_title: _from_model.get("title"),
+                to_title: _to_model.get("title"),
+                from_color: _from_model.get("color") || (_from_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color"),
+                to_color: _to_model.get("color") || (_to_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(this.renkan)).get("color"),
+                created_by_color: _created_by.get("color"),
+                created_by_title: _created_by.get("title")
+            },
+            renkan: this.renkan,
+            properties: this.options.properties
+        }));
+    this.redraw();
+    var _this = this,
+        closeEditor = function() {
+            _this.renderer.removeRepresentation(_this);
+            paper.view.draw();
+        };
+    this.editor_$.find(".Rk-CloseX").click(closeEditor);
+    
+    if (this.renderer.isEditable()) {
+        
+        var onFieldChange = Rkns._(function() {
+            Rkns._(function() {
+                if (_this.renderer.isEditable()) {
+                    _this.editor_$.find(".Rk-Edit-Goto").attr("href",_this.editor_$.find(".Rk-Edit-URI").val());
+                    var _data = {
+                        title: _this.editor_$.find(".Rk-Edit-Title").val(),
+                        uri: _this.editor_$.find(".Rk-Edit-URI").val()
+                    };
+                    _model.set(_data);
+                    paper.view.draw();
+                } else {
+                    closeEditor();
+                }
+            }).defer();
+        }).throttle(500);
+        
+        this.editor_$.on("keyup", function(_e) {
+            if (_e.keyCode === 27) {
+                closeEditor();
+            }
+        });
+        
+        this.editor_$.find("input").on("keyup change paste", onFieldChange);
+        
+        this.editor_$.find(".Rk-Edit-Vocabulary").change(function() {
+            var e = $(this),
+                v = e.val();
+            if (v) {
+                _this.editor_$.find(".Rk-Edit-Title").val(e.find(":selected").text());
+                _this.editor_$.find(".Rk-Edit-URI").val(v);
+                onFieldChange();
+            }
+        });
+        this.editor_$.find(".Rk-Edit-Direction").click(function() {
+            if (_this.renderer.isEditable()) {
+                _model.set({
+                    from: _model.get("to"),
+                    to: _model.get("from")
+                });
+                _this.draw();
+            } else {
+                closeEditor();
+            }
+        });
+        
+        var _picker = _this.editor_$.find(".Rk-Edit-ColorPicker");
+        
+        this.editor_$.find(".Rk-Edit-ColorPicker-Wrapper").hover(
+            function(_e) {
+                _e.preventDefault();
+                _picker.show();
+            },
+            function(_e) {
+                _e.preventDefault();
+                _picker.hide();
+            }
+        );
+        
+        _picker.find("li").hover(
+            function(_e) {
+                _e.preventDefault();
+                _this.editor_$.find(".Rk-Edit-Color").css("background", $(this).attr("data-color"));
+            },
+            function(_e) {
+                _e.preventDefault();
+                _this.editor_$.find(".Rk-Edit-Color").css("background", _model.get("color") || (_model.get("created_by") || Rkns.Renderer._USER_PLACEHOLDER(_this.renkan)).get("color"));
+            }
+        ).click(function(_e) {
+            _e.preventDefault();
+            if (_this.renderer.isEditable()) {
+                _model.set("color", $(this).attr("data-color"));
+                _picker.hide();
+                paper.view.draw();
+            } else {
+                closeEditor();
+            }
+        });
+    }
+};
+
+Rkns.Renderer.EdgeEditor.prototype.redraw = function() {
+    var _coords = this.source_representation.paper_coords;
+    Rkns.Renderer.drawEditBox(this.options, _coords, this.editor_block, 5, this.editor_$);
+    this.editor_$.show();
+    paper.view.draw();
+};
+
+/* */
+
+Rkns.Renderer._NodeButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
+
+Rkns.Renderer._NodeButton.prototype.setSectorSize = function() {
+    var sectorInner = this.source_representation.circle_radius;
+    if (sectorInner !== this.lastSectorInner) {
+        if (this.sector) {
+            this.sector.destroy();
+        }
+        this.sector = this.renderer.drawSector(
+            this, 1 + sectorInner,
+            Rkns.Renderer._NODE_BUTTON_WIDTH + sectorInner,
+            this.startAngle,
+            this.endAngle,
+            1,
+            this.imageName,
+            this.renkan.translate(this.text)
+        );
+        this.lastSectorInner = sectorInner;
+    }
+};
+
+/* */
+
+Rkns.Renderer.NodeEditButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
+
+Rkns.Renderer.NodeEditButton.prototype._init = function() {
+    this.type = "Node-edit-button";
+    this.lastSectorInner = 0;
+    this.startAngle = -135;
+    this.endAngle = -45;
+    this.imageName = "edit";
+    this.text = "Edit";
+};
+
+Rkns.Renderer.NodeEditButton.prototype.mouseup = function() {
+    if (!this.renderer.is_dragging) {
+        this.source_representation.openEditor();
+    }
+};
+
+/* */
+
+Rkns.Renderer.NodeRemoveButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
+
+Rkns.Renderer.NodeRemoveButton.prototype._init = function() {
+    this.type = "Node-remove-button";
+    this.lastSectorInner = 0;
+    this.startAngle = 0;
+    this.endAngle = 90;
+    this.imageName = "remove";
+    this.text = "Remove";
+};
+
+Rkns.Renderer.NodeRemoveButton.prototype.mouseup = function() {
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+    this.renderer.removeRepresentationsOfType("editor");
+    if (this.renderer.isEditable()) {
+        var delid = Rkns.Utils.getUID("delete");
+        this.renderer.delete_list.push({
+            id: delid,
+            time: new Date().valueOf() + this.options.element_delete_delay
+        });
+        this.source_representation.model.set("delete_scheduled", delid);
+    }
+};
+
+/* */
+
+Rkns.Renderer.NodeRevertButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
+
+Rkns.Renderer.NodeRevertButton.prototype._init = function() {
+    this.type = "Node-revert-button";
+    this.lastSectorInner = 0;
+    this.startAngle = -135;
+    this.endAngle = 135;
+    this.imageName = "revert";
+    this.text = "Cancel deletion";
+};
+
+Rkns.Renderer.NodeRevertButton.prototype.mouseup = function() {
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+    if (this.renderer.isEditable()) {
+        this.source_representation.model.unset("delete_scheduled");
+    }
+};
+
+/* */
+
+Rkns.Renderer.NodeLinkButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
+
+Rkns.Renderer.NodeLinkButton.prototype._init = function() {
+    this.type = "Node-link-button";
+    this.lastSectorInner = 0;
+    this.startAngle = 90;
+    this.endAngle = 180;
+    this.imageName = "link";
+    this.text = "Link to another node";
+};
+
+Rkns.Renderer.NodeLinkButton.prototype.mousedown = function(_event, _isTouch) {
+    if (this.renderer.isEditable()) {
+        var _off = this.renderer.canvas_$.offset(),
+            _point = new paper.Point([
+                _event.pageX - _off.left,
+                _event.pageY - _off.top
+            ]);
+        this.renderer.click_target = null;
+        this.renderer.removeRepresentationsOfType("editor");
+        this.renderer.addTempEdge(this.source_representation, _point);
+    }
+};
+
+/* */
+
+Rkns.Renderer.NodeEnlargeButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
+
+Rkns.Renderer.NodeEnlargeButton.prototype._init = function() {
+    this.type = "Node-enlarge-button";
+    this.lastSectorInner = 0;
+    this.startAngle = -45;
+    this.endAngle = 0;
+    this.imageName = "enlarge";
+    this.text = "Enlarge";
+};
+
+Rkns.Renderer.NodeEnlargeButton.prototype.mouseup = function() {
+    var _newsize = 1 + (this.source_representation.model.get("size") || 0);
+    this.source_representation.model.set("size", _newsize);
+    this.source_representation.select();
+    this.select();
+    paper.view.draw();
+};
+
+/* */
+
+Rkns.Renderer.NodeShrinkButton = Rkns.Utils.inherit(Rkns.Renderer._NodeButton);
+
+Rkns.Renderer.NodeShrinkButton.prototype._init = function() {
+    this.type = "Node-shrink-button";
+    this.lastSectorInner = 0;
+    this.startAngle = -180;
+    this.endAngle = -135;
+    this.imageName = "shrink";
+    this.text = "Shrink";
+};
+
+Rkns.Renderer.NodeShrinkButton.prototype.mouseup = function() {
+    var _newsize = -1 + (this.source_representation.model.get("size") || 0);
+    this.source_representation.model.set("size", _newsize);
+    this.source_representation.select();
+    this.select();
+    paper.view.draw();
+};
+
+/* */
+
+Rkns.Renderer.EdgeEditButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
+
+Rkns.Renderer.EdgeEditButton.prototype._init = function() {
+    this.type = "Edge-edit-button";
+    this.sector = this.renderer.drawSector(this, Rkns.Renderer._EDGE_BUTTON_INNER, Rkns.Renderer._EDGE_BUTTON_OUTER, -270, -90, 1, "edit", this.renkan.translate("Edit"));
+};
+
+Rkns.Renderer.EdgeEditButton.prototype.mouseup = function() {
+    if (!this.renderer.is_dragging) {
+        this.source_representation.openEditor();
+    }
+};
+
+/* */
+
+Rkns.Renderer.EdgeRemoveButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
+
+Rkns.Renderer.EdgeRemoveButton.prototype._init = function() {
+    this.type = "Edge-remove-button";
+    this.sector = this.renderer.drawSector(this, Rkns.Renderer._EDGE_BUTTON_INNER, Rkns.Renderer._EDGE_BUTTON_OUTER, -90, 90, 1, "remove", this.renkan.translate("Remove"));
+};
+
+Rkns.Renderer.EdgeRemoveButton.prototype.mouseup = function() {
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+    this.renderer.removeRepresentationsOfType("editor");
+    if (this.renderer.isEditable()) {
+        var delid = Rkns.Utils.getUID("delete");
+        this.renderer.delete_list.push({
+            id: delid,
+            time: new Date().valueOf() + this.options.element_delete_delay
+        });
+        this.source_representation.model.set("delete_scheduled", delid);
+    }
+};
+
+/* */
+
+Rkns.Renderer.EdgeRevertButton = Rkns.Utils.inherit(Rkns.Renderer._BaseButton);
+
+Rkns.Renderer.EdgeRevertButton.prototype._init = function() {
+    this.type = "Edge-revert-button";
+    this.sector = this.renderer.drawSector(this, Rkns.Renderer._EDGE_BUTTON_INNER, Rkns.Renderer._EDGE_BUTTON_OUTER, -135, 135, 1, "revert", this.renkan.translate("Cancel deletion"));
+};
+
+Rkns.Renderer.EdgeRevertButton.prototype.mouseup = function() {
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+    if (this.renderer.isEditable()) {
+        this.source_representation.model.unset("delete_scheduled");
+    }
+};
+
+/* */
+
+Rkns.Renderer.MiniFrame = Rkns.Utils.inherit(Rkns.Renderer._BaseRepresentation);
+
+Rkns.Renderer.MiniFrame.prototype.paperShift = function(_delta) {
+    this.renderer.offset = this.renderer.offset.subtract(_delta.divide(this.renderer.minimap.scale).multiply(this.renderer.scale));
+    this.renderer.redraw();
+};
+
+Rkns.Renderer.MiniFrame.prototype.mouseup = function(_delta) {
+    this.renderer.click_target = null;
+    this.renderer.is_dragging = false;
+};
+
+/* */
+
+Rkns.Renderer.Scene = function(_renkan) {
+    this.renkan = _renkan;
+    this.$ = Rkns.$(".Rk-Render");
+    this.representations = [];
+    this.$.html(this.template(_renkan));
+    this.onStatusChange();
+    this.canvas_$ = this.$.find(".Rk-Canvas");
+    this.labels_$ = this.$.find(".Rk-Labels");
+    this.editor_$ = this.$.find(".Rk-Editor");
+    this.notif_$ = this.$.find(".Rk-Notifications");
+    paper.setup(this.canvas_$[0]);
+    this.scale = 1;
+    this.offset = paper.view.center;
+    this.totalScroll = 0;
+    this.mouse_down = false;
+    this.click_target = null;
+    this.selected_target = null;
+    this.edge_layer = new paper.Layer();
+    this.node_layer = new paper.Layer();
+    this.buttons_layer = new paper.Layer();
+    this.delete_list = [];
+    
+    if (_renkan.options.show_minimap) {
+        this.minimap = {
+            background_layer: new paper.Layer(),
+            edge_layer: new paper.Layer(),
+            node_layer: new paper.Layer(),
+            node_group: new paper.Group(),
+            size: new paper.Size( _renkan.options.minimap_width, _renkan.options.minimap_height )
+        };
+        
+        this.minimap.background_layer.activate();
+        this.minimap.topleft = paper.view.bounds.bottomRight.subtract(this.minimap.size);
+        this.minimap.rectangle = new paper.Path.Rectangle(this.minimap.topleft.subtract([2,2]), this.minimap.size.add([4,4]));
+        this.minimap.rectangle.fillColor = _renkan.options.minimap_background_color;
+        this.minimap.rectangle.strokeColor = _renkan.options.minimap_border_color;
+        this.minimap.rectangle.strokeWidth = 4;
+        this.minimap.offset = new paper.Point(this.minimap.size.divide(2));
+        this.minimap.scale = .1;
+        
+        this.minimap.node_layer.activate();
+        this.minimap.cliprectangle = new paper.Path.Rectangle(this.minimap.topleft, this.minimap.size);
+        this.minimap.node_group.addChild(this.minimap.cliprectangle);
+        this.minimap.node_group.clipped = true;
+        this.minimap.miniframe = new paper.Path.Rectangle(this.minimap.topleft, this.minimap.size);
+        this.minimap.node_group.addChild(this.minimap.miniframe);
+        this.minimap.miniframe.fillColor = '#c0c0ff';
+        this.minimap.miniframe.opacity = .3;
+        this.minimap.miniframe.strokeColor = '#000080';
+        this.minimap.miniframe.strokeWidth = 3;
+        this.minimap.miniframe.__representation = new Rkns.Renderer.MiniFrame(this, null);
+    }
+    
+    this.throttledPaperDraw = Rkns._(function() {
+        paper.view.draw();
+    }).throttle(100);
+    
+    this.bundles = [];
+    this.click_mode = false;
+    
+    var _this = this,
+        _allowScroll = true,
+        _originalScale,
+        _zooming = false,
+        _lastTapDate,
+        _lastTapX,
+        _lastTapY;
+    
+    this.imageCache = {};
+    
+    ['edit', 'remove', 'link', 'enlarge', 'shrink', 'revert' ].forEach(function(imgname) {
+        var img = new Image();
+        img.src = _renkan.options.static_url + 'img/' + imgname + '.png';
+        _this.imageCache[imgname] = img;
+    });
+    
+    var throttledMouseMove = _.throttle(function(_event, _isTouch) {
+        _this.onMouseMove(_event, _isTouch);
+    }, Rkns.Renderer._MOUSEMOVE_RATE);
+    
+    this.canvas_$.on({
+        mousedown: function(_event) {
+            _event.preventDefault();
+            _this.onMouseDown(_event, false);
+        },
+        mousemove: function(_event) {
+            _event.preventDefault();
+            throttledMouseMove(_event, false);
+        },
+        mouseup: function(_event) {
+            _event.preventDefault();
+            _this.onMouseUp(_event, false);
+        },
+        mousewheel: function(_event, _delta) {
+            _event.preventDefault();
+            if (_allowScroll) {
+                _this.onScroll(_event, _delta);
+            }
+        },
+        touchstart: function(_event) {
+            _event.preventDefault();
+            var _touches = _event.originalEvent.touches[0];
+            if (
+                _renkan.options.allow_double_click
+                && new Date() - _lastTap < Rkns.Renderer._DOUBLETAP_DELAY
+                && ( Math.pow(_lastTapX - _touches.pageX, 2) + Math.pow(_lastTapY - _touches.pageY, 2) < Rkns.Renderer._DOUBLETAP_DISTANCE )
+            ) {
+                _lastTap = 0;
+                _this.onDoubleClick(_touches);
+            } else {
+                _lastTap = new Date();
+                _lastTapX = _touches.pageX;
+                _lastTapY = _touches.pageY;
+                _originalScale = _this.scale;
+                _zooming = false;
+                _this.onMouseDown(_touches, true);
+            }
+        },
+        touchmove: function(_event) {
+            _event.preventDefault();
+            _lastTap = 0;
+            if (_event.originalEvent.touches.length == 1) {
+                _this.onMouseMove(_event.originalEvent.touches[0], true);
+            } else {
+                if (!_zooming) {
+                    _this.onMouseUp(_event.originalEvent.touches[0], true);
+                    _this.click_target = null;
+                    _this.is_dragging = false;
+                    _zooming = true;
+                }
+                if (_event.originalEvent.scale === "undefined") {
+                    return;
+                }
+                var _newScale = _event.originalEvent.scale * _originalScale,
+                    _scaleRatio = _newScale / _this.scale,
+                    _newOffset = new paper.Point([
+                        _this.canvas_$.width(),
+                        _this.canvas_$.height()
+                    ]).multiply( .5 * ( 1 - _scaleRatio ) ).add(_this.offset.multiply( _scaleRatio ));
+                _this.setScale(_newScale, _this.offset);
+            }
+        },
+        touchend: function(_event) {
+            _event.preventDefault();
+            _this.onMouseUp(_event.originalEvent.changedTouches[0], true);
+        },
+        dblclick: function(_event) {
+            _event.preventDefault();
+            if (_renkan.options.allow_double_click) {
+                _this.onDoubleClick(_event);
+            }
+        },
+        mouseleave: function(_event) {
+            _event.preventDefault();
+            _this.onMouseUp(_event, false);
+            _this.click_target = null;
+            _this.is_dragging = false;
+        },
+        dragover: function(_event) {
+            _event.preventDefault();
+        },
+        dragenter: function(_event) {
+            _event.preventDefault();
+            _allowScroll = false;
+        },
+        dragleave: function(_event) {
+            _event.preventDefault();
+            _allowScroll = true;
+        },
+        drop: function(_event) {
+            _event.preventDefault();
+            _allowScroll = true;
+            var res = {};
+            Rkns._(_event.originalEvent.dataTransfer.types).each(function(t) {
+                try {
+                    res[t] = _event.originalEvent.dataTransfer.getData(t);
+                } catch(e) {}
+            });
+            var text = _event.originalEvent.dataTransfer.getData("Text");
+            if (typeof text === "string") {
+                switch(text[0]) {
+                    case "{":
+                    case "[":
+                        try {
+                            var data = JSON.parse(text);
+                            _(res).extend(data);
+                        }
+                        catch(e) {
+                            if (!res["text/plain"]) {
+                                res["text/plain"] = text;
+                            }
+                        }
+                    break;
+                    case "<":
+                        if (!res["text/html"]) {
+                            res["text/html"] = text;
+                        }
+                    break;
+                    default:
+                        if (!res["text/plain"]) {
+                            res["text/plain"] = text;
+                        }
+                }
+            }
+            var url = _event.originalEvent.dataTransfer.getData("URL");
+            if (url && !res["text/uri-list"]) {
+                res["text/uri-list"] = url;
+            }
+            _this.dropData(res, _event.originalEvent);
+        }
+    });
+    this.editor_$.find(".Rk-ZoomOut").click(function() {
+        var _newScale = _this.scale * Math.SQRT1_2,
+            _offset = new paper.Point([
+                _this.canvas_$.width(),
+                _this.canvas_$.height()
+            ]).multiply( .5 * ( 1 - Math.SQRT1_2 ) ).add(_this.offset.multiply( Math.SQRT1_2 ));
+        _this.setScale( _newScale, _offset );
+    });
+    this.editor_$.find(".Rk-ZoomIn").click(function() {
+        var _newScale = _this.scale * Math.SQRT2,
+            _offset = new paper.Point([
+                _this.canvas_$.width(),
+                _this.canvas_$.height()
+            ]).multiply( .5 * ( 1 - Math.SQRT2 ) ).add(_this.offset.multiply( Math.SQRT2 ));
+        _this.setScale( _newScale, _offset );
+    });
+    this.$.find(".Rk-CurrentUser").mouseenter(
+        function() { _this.$.find(".Rk-UserList").slideDown(); }
+    );
+    this.$.find(".Rk-Users").mouseleave(
+        function() { _this.$.find(".Rk-UserList").slideUp(); }
+    );
+    this.$.find(".Rk-FullScreen-Button").click(function() {
+        var _isFull = document.fullScreen || document.mozFullScreen || document.webkitIsFullScreen,
+            _el = _this.renkan.$[0],
+            _requestMethods = ["requestFullScreen","mozRequestFullScreen","webkitRequestFullScreen"],
+            _cancelMethods = ["cancelFullScreen","mozCancelFullScreen","webkitCancelFullScreen"];
+        if (_isFull) {
+            for (var i = 0; i < _cancelMethods.length; i++) {
+                if (typeof document[_cancelMethods[i]] === "function") {
+                    document[_cancelMethods[i]]();
+                    break;
+                }
+            }
+        } else {
+            for (var i = 0; i < _requestMethods.length; i++) {
+                if (typeof _el[_requestMethods[i]] === "function") {
+                    _el[_requestMethods[i]]();
+                    break;
+                }
+            }
+        }
+    });
+    this.$.find(".Rk-AddNode-Button").click(function() {
+        if (_this.click_mode === Rkns.Renderer._CLICKMODE_ADDNODE) {
+            _this.click_mode = false;
+            _this.notif_$.hide();
+        } else {
+            _this.click_mode = Rkns.Renderer._CLICKMODE_ADDNODE;
+            _this.notif_$.text(_renkan.translate("Click on the background canvas to add a node")).fadeIn();
+        }
+    });
+    this.$.find(".Rk-AddEdge-Button").click(function() {
+        if (_this.click_mode === Rkns.Renderer._CLICKMODE_STARTEDGE || _this.click_mode === Rkns.Renderer._CLICKMODE_ENDEDGE) {
+            _this.click_mode = false;
+            _this.notif_$.hide();
+        } else {
+            _this.click_mode = Rkns.Renderer._CLICKMODE_STARTEDGE;
+            _this.notif_$.text(_renkan.translate("Click on a first node to start the edge")).fadeIn();
+        }
+    });
+    this.$.find(".Rk-Bookmarklet-Button")
+        .attr("href","javascript:" + Rkns.Renderer._BOOKMARKLET_CODE(_renkan))
+        .click(function(){
+            _this.notif_$
+                .text(_renkan.translate("Drag this button to your bookmark bar. When on a third-party website, click it to enable drag-and-drop from the website to Renkan."))
+                .fadeIn()
+                .delay(5000)
+                .fadeOut();
+            return false;
+        });
+    this.$.find(".Rk-TopBar-Button").mouseover(function() {
+        Rkns.$(this).find(".Rk-TopBar-Tooltip").show();
+    }).mouseout(function() {
+        Rkns.$(this).find(".Rk-TopBar-Tooltip").hide();
+    });
+    this.$.find(".Rk-Fold-Bins").click(function() {
+        var bins = _renkan.$.find(".Rk-Bins");
+        if (bins.offset().left < 0) {
+            bins.animate({left: 0},250);
+            _this.$.animate({left: 300},250,function() {
+                var w = _this.$.width();
+                paper.view.viewSize = new paper.Size([w, _this.canvas_$.height()]);
+            });
+            $(this).html("&laquo;");
+        } else {
+            bins.animate({left: -300},250);
+            _this.$.animate({left: 0},250,function() {
+                var w = _this.$.width();
+                paper.view.viewSize = new paper.Size([w, _this.canvas_$.height()]);
+            });
+            $(this).html("&raquo;");
+        }
+    });
+    
+    paper.view.onResize = function(_event) {
+        _this.offset = _this.offset.add(_event.delta.divide(2));
+        if (_this.minimap) {
+            _this.minimap.topleft = paper.view.bounds.bottomRight.subtract(_this.minimap.size);
+            _this.minimap.rectangle.fitBounds(_this.minimap.topleft.subtract([2,2]), _this.minimap.size.add([4,4]));
+            _this.minimap.cliprectangle.fitBounds(_this.minimap.topleft, _this.minimap.size);
+        }
+        _this.redraw();
+    };
+    
+    var _thRedraw = Rkns._.throttle(function() {
+        _this.redraw();
+    },50);
+    
+    this.addRepresentations("Node", this.renkan.project.get("nodes"));
+    this.addRepresentations("Edge", this.renkan.project.get("edges"));
+    this.renkan.project.on("change:title", function() {
+        _this.$.find(".Rk-PadTitle").val(_renkan.project.get("title"));
+    });
+    
+    this.$.find(".Rk-PadTitle").on("keyup input paste", function() {
+        _renkan.project.set({"title": $(this).val()});
+    });
+    
+    this.renkan.project.get("users").each(function(_user) {
+        _this.addUser(_user);
+    });
+    
+    this.renkan.project.on("add:users", function(_user) {
+        _this.addUser(_user);
+    });
+    this.renkan.project.on("add:nodes", function(_node) {
+        _this.addRepresentation("Node", _node);
+        _thRedraw();
+    });
+    this.renkan.project.on("add:edges", function(_edge) {
+        _this.addRepresentation("Edge", _edge);
+        _thRedraw();
+    });
+    this.renkan.project.on("change:title", function(_model, _title) {
+        var el = _this.$.find(".Rk-PadTitle");
+        if (el.is("input")) {
+            if (el.val() !== _title) {
+                el.val(_title);
+            }
+        } else {
+            el.text(_title);
+        }
+    });
+    
+    if (_renkan.options.size_bug_fix) {
+        var _delay = (
+            typeof _renkan.options.size_bug_fix === "number"
+            ? _renkan.options.size_bug_fix
+            : 500
+        );
+        window.setTimeout(
+            function() {
+                _this.fixSize(true);
+            },
+            _delay
+        );
+    }
+    
+    if (_renkan.options.force_resize) {
+        $(window).resize(function() {
+            _this.fixSize(false);
+        });
+    }
+    
+    this.redraw();
+    
+    window.setInterval(function() {
+        var _now = new Date().valueOf();
+        _this.delete_list.forEach(function(d) {
+            if (_now >= d.time) {
+                var el = _renkan.project.get("nodes").findWhere({"delete_scheduled":d.id});
+                if (el) {
+                    project.removeNode(el);
+                }
+                el = _renkan.project.get("edges").findWhere({"delete_scheduled":d.id});
+                if (el) {
+                    project.removeEdge(el);
+                }
+            }
+        });
+        _this.delete_list = _this.delete_list.filter(function(d) {
+            return _renkan.project.get("nodes").findWhere({"delete_scheduled":d.id}) || _renkan.project.get("edges").findWhere({"delete_scheduled":d.id});
+        });
+    }, 500);
+    
+    if (this.minimap) {
+        window.setInterval(function() {
+            _this.rescaleMinimap();
+        }, 2000);
+    }
+
+};
+
+Rkns.Renderer.Scene.prototype.template = Rkns._.template(
+    '<% if (options.show_top_bar) { %><div class="Rk-TopBar"><% if (!options.editor_mode) { %><h2 class="Rk-PadTitle"><%- project.get("title") || translate("Untitled project")%></h2>'
+    + '<% } else { %><input type="text" class="Rk-PadTitle" value="<%- project.get("title") || "" %>" placeholder="<%-translate("Untitled project")%>" /><% } %>'
+    + '<div class="Rk-Users"><div class="Rk-CurrentUser"><span class="Rk-CurrentUser-Color"></span><span class="Rk-CurrentUser-Name">&lt;unknown user&gt;</span></div><ul class="Rk-UserList"></ul></div>'
+    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-FullScreen-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Full Screen")%></div></div></div>'
+    + '<% if (options.editor_mode) { %>'
+    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-AddNode-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Add Node")%></div></div></div>'
+    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-AddEdge-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Add Edge")%></div></div></div>'
+    + '<div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-Save-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents"> </div></div></div>'
+    + '<div class="Rk-TopBar-Separator"></div><a class="Rk-TopBar-Button Rk-Bookmarklet-Button" href="#"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Tip"></div><div class="Rk-TopBar-Tooltip-Contents">'
+    + '<%-translate("Renkan \'Drag-to-Add\' bookmarklet")%></div></div></a>'
+    + '<div class="Rk-TopBar-Separator"></div>'
+    + '<% } %></div><% } %>'
+    + '<div class="Rk-Editing-Space<% if (!options.show_top_bar) { %> Rk-Editing-Space-Full<% } %>">'
+    + '<div class="Rk-Labels"></div><canvas class="Rk-Canvas" resize></canvas><div class="Rk-Editor"><div class="Rk-Notifications"></div>'
+    + '<% if (options.show_bins) { %><div class="Rk-Fold-Bins">&laquo;</div><% } %>'
+    + '<div class="Rk-ZoomButtons"><div class="Rk-ZoomIn" title="<%-translate("Zoom In")%>"></div><div class="Rk-ZoomOut" title="<%-translate("Zoom Out")%>"></div></div>'
+    + '</div></div>'
+);
+
+Rkns.Renderer.Scene.prototype.fixSize = function(_autoscale) {
+    var w = this.$.width(),
+        h = this.$.height();
+    if (this.renkan.options.show_top_bar) {
+        h -= this.$.find(".Rk-TopBar").height();
+    }
+    this.canvas_$.attr({
+        width: w,
+        height: h
+    });
+    
+    paper.view.viewSize = new paper.Size([w, h]);
+    
+    if (_autoscale) {
+        this.autoScale();
+    }
+};
+
+Rkns.Renderer.Scene.prototype.drawSector = function(_repr, _inR, _outR, _startAngle, _endAngle, _padding, _imgname, _caption) {
+    var _options = this.renkan.options,
+        _startRads = _startAngle * Math.PI / 180,
+        _endRads = _endAngle * Math.PI / 180,
+        _img = this.imageCache[_imgname],
+        _span = _endRads - _startRads,
+        _startdx = - Math.sin(_startRads),
+        _startdy = Math.cos(_startRads),
+        _startXIn = Math.cos(_startRads) * _inR + _padding * _startdx,
+        _startYIn = Math.sin(_startRads) * _inR + _padding * _startdy,
+        _startXOut = Math.cos(_startRads) * _outR + _padding * _startdx,
+        _startYOut = Math.sin(_startRads) * _outR + _padding * _startdy,
+        _enddx = - Math.sin(_endRads),
+        _enddy = Math.cos(_endRads),
+        _endXIn = Math.cos(_endRads) * _inR - _padding * _enddx,
+        _endYIn = Math.sin(_endRads) * _inR - _padding * _enddy,
+        _endXOut = Math.cos(_endRads) * _outR - _padding * _enddx,
+        _endYOut = Math.sin(_endRads) * _outR - _padding * _enddy,
+        _centerR = (_inR + _outR)/2,
+        _centerRads = (_startRads + _endRads) / 2,
+        _centerX = Math.cos(_centerRads) * _centerR,
+        _centerY = Math.sin(_centerRads) * _centerR,
+        _centerXIn = Math.cos(_centerRads) * _inR,
+        _centerXOut = Math.cos(_centerRads) * _outR,
+        _centerYIn = Math.sin(_centerRads) * _inR,
+        _centerYOut = Math.sin(_centerRads) * _outR,
+        _textX = Math.cos(_centerRads) * (_outR + 3),
+        _textY = Math.sin(_centerRads) * (_outR + _options.buttons_label_font_size) + _options.buttons_label_font_size / 2,
+        _segments = [];
+    this.buttons_layer.activate();
+    var _path = new paper.Path();
+    _path.add([_startXIn, _startYIn]);
+    _path.arcTo([_centerXIn, _centerYIn], [_endXIn, _endYIn]);
+    _path.lineTo([_endXOut,  _endYOut]);
+    _path.arcTo([_centerXOut, _centerYOut], [_startXOut, _startYOut]);
+    _path.fillColor = _options.buttons_background;
+    _path.opacity = .5;
+    _path.closed = true;
+    _path.__representation = _repr;
+    var _text = new paper.PointText(_textX,_textY);
+    _text.characterStyle = {
+        fontSize: _options.buttons_label_font_size,
+        fillColor: _options.buttons_label_color
+    };
+    if (_textX > 2) {
+        _text.paragraphStyle.justification = 'left';
+    } else if (_textX < -2) {
+        _text.paragraphStyle.justification = 'right';
+    } else {
+        _text.paragraphStyle.justification = 'center';
+    }
+    _text.visible = false;
+    var _visible = false,
+        _restPos = new paper.Point(-200, -200),
+        _grp = new paper.Group([_path, _text]),
+        _delta = _grp.position,
+        _imgdelta = new paper.Point([_centerX, _centerY]),
+        _currentPos = new paper.Point(0,0);
+    _text.content = _caption;
+    _grp.visible = false;
+    _grp.position = _restPos;
+    var _res = {
+        show: function() {
+            _visible = true;
+            _grp.position = _currentPos.add(_delta);
+            _grp.visible = true;
+        },
+        moveTo: function(_point) {
+            _currentPos = _point;
+            if (_visible) {
+                _grp.position = _point.add(_delta);
+            }
+        },
+        hide: function() {
+            _visible = false;
+            _grp.visible = false;
+            _grp.position = _restPos;
+        },
+        select: function() {
+            _path.opacity = .8;
+            _text.visible = true;
+        },
+        unselect: function() {
+            _path.opacity = .5;
+            _text.visible = false;
+        },
+        destroy: function() {
+            _grp.remove();
+        }
+    };
+    function showImage() {
+        var _raster = new paper.Raster(_img);
+        _raster.position = _imgdelta.add(_grp.position).subtract(_delta);
+        _grp.addChild(_raster);
+    }
+    if (_img.width) {
+        showImage();
+    } else {
+        Rkns.$(_img).on("load",showImage);
+    }
+    
+    return _res;
+};
+
+Rkns.Renderer.Scene.prototype.addToBundles = function(_edgeRepr) {
+    var _bundle = Rkns._(this.bundles).find(function(_bundle) {
+        return ( 
+            ( _bundle.from === _edgeRepr.from_representation && _bundle.to === _edgeRepr.to_representation )
+            || ( _bundle.from === _edgeRepr.to_representation && _bundle.to === _edgeRepr.from_representation )
+        );
+    });
+    if (typeof _bundle !== "undefined") {
+        _bundle.edges.push(_edgeRepr);
+    } else {
+        _bundle = {
+            from: _edgeRepr.from_representation,
+            to: _edgeRepr.to_representation,
+            edges: [ _edgeRepr ],
+            getPosition: function(_er) {
+                var _dir = (_er.from_representation === this.from) ? 1 : -1;
+                return _dir * ( Rkns._(this.edges).indexOf(_er) - (this.edges.length - 1) / 2 );
+            }
+        };
+        this.bundles.push(_bundle);
+    }
+    return _bundle;
+};
+
+Rkns.Renderer.Scene.prototype.isEditable = function() {
+    return (this.renkan.options.editor_mode && !this.renkan.read_only);
+};
+
+Rkns.Renderer.Scene.prototype.onStatusChange = function() {
+    var savebtn = this.$.find(".Rk-Save-Button"),
+        tip = savebtn.find(".Rk-TopBar-Tooltip-Contents");
+    if (this.renkan.read_only) {
+        savebtn.removeClass("disabled Rk-Save-Online").addClass("Rk-Save-ReadOnly");
+        tip.text(this.renkan.translate("Connection lost"));
+    } else {
+        if (this.renkan.options.snapshot_mode) {
+            savebtn.removeClass("Rk-Save-ReadOnly Rk-Save-Online");
+            tip.text(this.renkan.translate("Archive Project"));
+        } else {
+            savebtn.removeClass("disabled Rk-Save-ReadOnly").addClass("Rk-Save-Online");
+            tip.text(this.renkan.translate("Auto-save enabled"));
+        }
+    }
+};
+
+Rkns.Renderer.Scene.prototype.setScale = function(_newScale, _offset) {
+    if (_newScale > Rkns.Renderer._MIN_SCALE && _newScale < Rkns.Renderer._MAX_SCALE) {
+        this.scale = _newScale;
+        if (_offset) {
+            this.offset = _offset;
+        }
+        this.redraw();
+    }
+};
+
+Rkns.Renderer.Scene.prototype.autoScale = function() {
+    var nodes = this.renkan.project.get("nodes");
+    if (nodes.length > 1) {
+        var _xx = nodes.map(function(_node) { return _node.get("position").x; }),
+            _yy = nodes.map(function(_node) { return _node.get("position").y; }),
+            _minx = Math.min.apply(Math, _xx),
+            _miny = Math.min.apply(Math, _yy),
+            _maxx = Math.max.apply(Math, _xx),
+            _maxy = Math.max.apply(Math, _yy);
+        var _scale = Math.max(Rkns.Renderer._MIN_SCALE, Math.min(Rkns.Renderer._MAX_SCALE, (paper.view.size.width - 2 * Rkns.Renderer._AUTOSCALE_MARGIN) / (_maxx - _minx), (paper.view.size.height - 2 * Rkns.Renderer._AUTOSCALE_MARGIN) / (_maxy - _miny)));
+        this.setScale(_scale, paper.view.center.subtract(new paper.Point([(_maxx + _minx) / 2, (_maxy + _miny) / 2]).multiply(_scale)));
+    }
+    if (nodes.length === 1) {
+        this.setScale(1, paper.view.center.subtract(new paper.Point([nodes.at(0).get("position").x, nodes.at(0).get("position").y])));
+    }
+};
+
+Rkns.Renderer.Scene.prototype.redrawMiniframe = function() {
+    var topleft = this.toMinimapCoords(this.toModelCoords(new paper.Point([0,0]))),
+        bottomright = this.toMinimapCoords(this.toModelCoords(paper.view.bounds.bottomRight));
+    this.minimap.miniframe.fitBounds(topleft, bottomright);
+};
+
+Rkns.Renderer.Scene.prototype.rescaleMinimap = function() {
+    var nodes = this.renkan.project.get("nodes");
+    if (nodes.length > 1) {
+        var _xx = nodes.map(function(_node) { return _node.get("position").x; }),
+            _yy = nodes.map(function(_node) { return _node.get("position").y; }),
+            _minx = Math.min.apply(Math, _xx),
+            _miny = Math.min.apply(Math, _yy),
+            _maxx = Math.max.apply(Math, _xx),
+            _maxy = Math.max.apply(Math, _yy);
+        var _scale = Math.min(
+            this.scale * .8 * this.renkan.options.minimap_width / paper.view.bounds.width,
+            this.scale * .8 * this.renkan.options.minimap_height / paper.view.bounds.height,
+            ( this.renkan.options.minimap_width - 2 * Rkns.Renderer._MINIMAP_MARGIN ) / (_maxx - _minx),
+            ( this.renkan.options.minimap_height - 2 * Rkns.Renderer._MINIMAP_MARGIN ) / (_maxy - _miny)
+        );
+        this.minimap.offset = this.minimap.size.divide(2).subtract(new paper.Point([(_maxx + _minx) / 2, (_maxy + _miny) / 2]).multiply(_scale));
+        this.minimap.scale = _scale;
+    }
+    if (nodes.length === 1) {
+        this.minimap.scale = .1;
+        this.minimap.offset = this.minimap.size.divide(2).subtract(new paper.Point([nodes.at(0).get("position").x, nodes.at(0).get("position").y]).multiply(this.minimap.scale));
+    }
+    this.redraw();
+};
+
+Rkns.Renderer.Scene.prototype.toPaperCoords = function(_point) {
+    return _point.multiply(this.scale).add(this.offset);
+};
+
+Rkns.Renderer.Scene.prototype.toMinimapCoords = function(_point) {
+    return _point.multiply(this.minimap.scale).add(this.minimap.offset).add(this.minimap.topleft);
+};
+
+Rkns.Renderer.Scene.prototype.toModelCoords = function(_point) {
+    return _point.subtract(this.offset).divide(this.scale);
+};
+
+Rkns.Renderer.Scene.prototype.addRepresentation = function(_type, _model) {
+    var _repr = new Rkns.Renderer[_type](this, _model);
+    this.representations.push(_repr);
+    return _repr;
+};
+
+Rkns.Renderer.Scene.prototype.addRepresentations = function(_type, _collection) {
+    var _this = this;
+    _collection.forEach(function(_model) {
+        _this.addRepresentation(_type, _model);
+    });
+};
+
+Rkns.Renderer.Scene.prototype.userTemplate = Rkns._.template(
+    '<li class="Rk-User"><span class="Rk-UserColor" style="background:<%=background%>;"></span><%=name%></li>'
+);
+
+Rkns.Renderer.Scene.prototype.addUser = function(_user) {
+    if (_user.get("_id") === this.renkan.current_user) {
+        this.$.find(".Rk-CurrentUser-Name").text(_user.get("title"));
+        this.$.find(".Rk-CurrentUser-Color").css("background", _user.get("color"));
+    } else {
+        this.$.find(".Rk-UserList").append(
+            Rkns.$(
+                this.userTemplate({
+                    name: _user.get("title"),
+                    background: _user.get("color")
+                })
+            )
+        );
+    }
+};
+
+Rkns.Renderer.Scene.prototype.removeRepresentation = function(_representation) {
+    _representation.destroy();
+    this.representations = Rkns._(this.representations).reject(
+        function(_repr) {
+            return _repr == _representation;
+        }
+    );
+};
+
+Rkns.Renderer.Scene.prototype.getRepresentationByModel = function(_model) {
+    return Rkns._(this.representations).find(function(_repr) {
+        return _repr.model === _model;
+    });
+};
+
+Rkns.Renderer.Scene.prototype.removeRepresentationsOfType = function(_type) {
+    var _representations = Rkns._(this.representations).filter(function(_repr) {
+            return _repr.type == _type;
+        }),
+        _this = this;
+    Rkns._(_representations).each(function(_repr) {
+        _this.removeRepresentation(_repr);
+    });
+};
+
+Rkns.Renderer.Scene.prototype.highlightModel = function(_model) {
+    var _repr = this.getRepresentationByModel(_model);
+    if (_repr) {
+        _repr.highlight();
+    }
+};
+
+Rkns.Renderer.Scene.prototype.unhighlightAll = function(_model) {
+    Rkns._(this.representations).each(function(_repr) {
+        _repr.unhighlight();
+    });
+};
+
+Rkns.Renderer.Scene.prototype.unselectAll = function(_model) {
+    Rkns._(this.representations).each(function(_repr) {
+        _repr.unselect();
+    });
+};
+
+Rkns.Renderer.Scene.prototype.redraw = function() {
+    Rkns._(this.representations).each(function(_representation) {
+        _representation.redraw(true);
+    });
+    if (this.minimap) {
+        this.redrawMiniframe();
+    }
+    paper.view.draw();
+};
+
+Rkns.Renderer.Scene.prototype.addTempEdge = function(_from, _point) {
+    var _tmpEdge = this.addRepresentation("TempEdge",null);
+    _tmpEdge.end_pos = _point;
+    _tmpEdge.from_representation = _from;
+    _tmpEdge.redraw();
+    this.click_target = _tmpEdge;
+};
+
+Rkns.Renderer.Scene.prototype.findTarget = function(_hitResult) {
+    if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
+        var _newTarget = _hitResult.item.__representation;
+        if (this.selected_target !== _hitResult.item.__representation) {
+            if (this.selected_target) {
+                this.selected_target.unselect(_newTarget);
+            }
+            _newTarget.select(this.selected_target);
+            this.selected_target = _newTarget;
+        }
+    } else {
+        if (this.selected_target) {
+            this.selected_target.unselect();
+        }
+        this.selected_target = null;
+    }
+};
+
+Rkns.Renderer.Scene.prototype.paperShift = function(_delta) {
+    this.offset = this.offset.add(_delta);
+    this.redraw();
+};
+
+Rkns.Renderer.Scene.prototype.onMouseMove = function(_event) {
+    var _off = this.canvas_$.offset(),
+        _point = new paper.Point([
+            _event.pageX - _off.left,
+            _event.pageY - _off.top
+        ]),
+        _delta = _point.subtract(this.last_point);
+    this.last_point = _point;
+    if (!this.is_dragging && this.mouse_down && _delta.length > Rkns.Renderer._MIN_DRAG_DISTANCE) {
+        this.is_dragging = true;
+    }
+    var _hitResult = paper.project.hitTest(_point);
+    if (this.is_dragging) {
+        if (this.click_target && typeof this.click_target.paperShift === "function") {
+            this.click_target.paperShift(_delta);
+        } else {
+            this.paperShift(_delta);
+        }
+    } else {
+        this.findTarget(_hitResult);
+    }
+    paper.view.draw();
+};
+
+Rkns.Renderer.Scene.prototype.onMouseDown = function(_event, _isTouch) {
+    var _off = this.canvas_$.offset(),
+        _point = new paper.Point([
+            _event.pageX - _off.left,
+            _event.pageY - _off.top
+        ]);
+    this.last_point = _point;
+    this.mouse_down = true;
+    if (!this.click_target || this.click_target.type !== "Temp-edge") {
+        this.removeRepresentationsOfType("editor");
+        this.is_dragging = false;
+        var _hitResult = paper.project.hitTest(_point);
+        if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
+            this.click_target = _hitResult.item.__representation;
+            this.click_target.mousedown(_event, _isTouch);
+        } else {
+            this.click_target = null;
+            if (this.isEditable() && this.click_mode === Rkns.Renderer._CLICKMODE_ADDNODE) {
+                var _coords = this.toModelCoords(_point),
+                    _data = {
+                        id: Rkns.Utils.getUID('node'),
+                        created_by: this.renkan.current_user,
+                        position: {
+                            x: _coords.x,
+                            y: _coords.y
+                        }
+                    };
+                    _node = this.renkan.project.addNode(_data);
+                this.getRepresentationByModel(_node).openEditor();
+            }
+        }
+    }
+    if (this.click_mode) {
+        if (this.isEditable() && this.click_mode === Rkns.Renderer._CLICKMODE_STARTEDGE && this.click_target && this.click_target.type === "Node") {
+            this.removeRepresentationsOfType("editor");
+            this.addTempEdge(this.click_target, _point);
+            this.click_mode = Rkns.Renderer._CLICKMODE_ENDEDGE;
+            this.notif_$.fadeOut(function() {
+                Rkns.$(this).html(_renkan.translate("Click on a second node to complete the edge")).fadeIn();
+            });
+        } else {
+            this.notif_$.hide();
+            this.click_mode = false;
+        }
+    }
+    paper.view.draw();
+};
+
+Rkns.Renderer.Scene.prototype.onMouseUp = function(_event, _isTouch) {
+    this.mouse_down = false;
+    if (this.click_target) {
+        var _off = this.canvas_$.offset();
+        this.click_target.mouseup(
+            {
+                point: new paper.Point([
+                    _event.pageX - _off.left,
+                    _event.pageY - _off.top
+                ])
+            },
+            _isTouch
+        );
+    } else {
+        this.click_target = null;
+        this.is_dragging = false;
+        if (_isTouch) {
+            this.unselectAll();
+        }
+    }
+    paper.view.draw();
+};
+
+Rkns.Renderer.Scene.prototype.onScroll = function(_event, _scrolldelta) {
+    this.totalScroll += _scrolldelta;
+    if (Math.abs(this.totalScroll) >= 1) {
+        var _off = this.canvas_$.offset(),
+            _delta = new paper.Point([
+                _event.pageX - _off.left,
+                _event.pageY - _off.top
+            ]).subtract(this.offset).multiply( Math.SQRT2 - 1 );
+        if (this.totalScroll > 0) {
+            this.setScale( this.scale * Math.SQRT2, this.offset.subtract(_delta) );
+        } else {
+            this.setScale( this.scale * Math.SQRT1_2, this.offset.add(_delta.divide(Math.SQRT2)));
+        }
+        this.totalScroll = 0;
+    }
+};
+
+Rkns.Renderer.Scene.prototype.onDoubleClick = function(_event) {
+    if (!this.isEditable()) {
+        return;
+    }
+    var _off = this.canvas_$.offset(),
+        _point = new paper.Point([
+            _event.pageX - _off.left,
+            _event.pageY - _off.top
+        ]);
+    var _hitResult = paper.project.hitTest(_point);
+    if (this.isEditable() && (!_hitResult || typeof _hitResult.item.__representation === "undefined")) {
+        var _coords = this.toModelCoords(_point),
+            _data = {
+                id: Rkns.Utils.getUID('node'),
+                created_by: this.renkan.current_user,
+                position: {
+                    x: _coords.x,
+                    y: _coords.y
+                }
+            };
+            _node = this.renkan.project.addNode(_data);
+            this.getRepresentationByModel(_node).openEditor();
+    }
+    paper.view.draw();
+};
+
+Rkns.Renderer.Scene.prototype.dropData = function(_data, _event) {
+    if (!this.isEditable()) {
+        return;
+    }
+    if (_data["text/json"] || _data["application/json"]) {
+        try {
+            var jsondata = JSON.parse(_data["text/json"] || _data["application/json"]);
+            _(_data).extend(jsondata);
+        }
+        catch(e) {}
+    }
+    var newNode = {};
+    switch(_data["text/x-iri-specific-site"]) {
+        case "twitter":
+            var snippet = Rkns.$('<div>').html(_data["text/x-iri-selected-html"]),
+                tweetdiv = snippet.find(".tweet");
+            newNode.title = _renkan.translate("Tweet by ") + tweetdiv.attr("data-name");
+            newNode.uri = "http://twitter.com/" + tweetdiv.attr("data-screen-name") + "/status/" + tweetdiv.attr("data-tweet-id");
+            newNode.image = tweetdiv.find(".avatar").attr("src");
+            newNode.description = tweetdiv.find(".js-tweet-text:first").text();
+        break;
+        case "google":
+            var snippet = Rkns.$('<div>').html(_data["text/x-iri-selected-html"]);
+            newNode.title = snippet.find("h3:first").text().trim();
+            newNode.uri = snippet.find("h3 a").attr("href");
+            newNode.description = snippet.find(".st:first").text().trim();
+        break;
+        case undefined:
+        default:
+            if (_data["text/x-iri-source-uri"]) {
+                newNode.uri = _data["text/x-iri-source-uri"];
+            }
+            if (_data["text/plain"] || _data["text/x-iri-selected-text"]) {
+                newNode.description = (_data["text/plain"] || _data["text/x-iri-selected-text"]).replace(/[\s\n]+/gm,' ').trim();
+            }
+            if (_data["text/html"] || _data["text/x-iri-selected-html"]) {
+                var snippet = Rkns.$('<div>').html(_data["text/html"] || _data["text/x-iri-selected-html"]);
+                var _imgs = snippet.find("img");
+                if (_imgs.length) {
+                    newNode.image = _imgs[0].src;
+                }
+                var _as = snippet.find("a");
+                if (_as.length) {
+                    newNode.uri = _as[0].href;
+                }
+                newNode.title = snippet.find("[title]").attr("title") || newNode.title;
+                newNode.description = snippet.text().replace(/[\s\n]+/gm,' ').trim();
+            }
+            if (_data["text/uri-list"]) {
+                newNode.uri = _data["text/uri-list"];
+            }
+            if (_data["text/x-moz-url"] && !newNode.title) {
+                newNode.title = (_data["text/x-moz-url"].split("\n")[1] || "").trim();
+                if (newNode.title === newNode.uri) {
+                    newNode.title = false;
+                }
+            }
+            if (_data["text/x-iri-source-title"] && !newNode.title) {
+                newNode.title = _data["text/x-iri-source-title"];
+            }
+            if (_data["text/html"] || _data["text/x-iri-selected-html"]) {
+                newNode.image = snippet.find("[data-image]").attr("data-image") || newNode.image;
+                newNode.uri = snippet.find("[data-uri]").attr("data-uri") || newNode.uri;
+                newNode.title = snippet.find("[data-title]").attr("data-title") || newNode.title;
+                newNode.description = snippet.find("[data-description]").attr("data-description") || newNode.description;
+            }
+    }
+    if (!newNode.title) {
+        newNode.title = this.renkan.translate("Dragged resource");
+    }
+    var fields = ["title", "description", "uri", "image"];
+    for (var i = 0; i < fields.length; i++) {
+        var f = fields[i];
+        if (_data["text/x-iri-" + f] || _data[f]) {
+            newNode[f] = _data["text/x-iri-" + f] || _data[f];
+        }
+        if (newNode[f] === "none" || newNode[f] === "null") {
+            newNode[f] = undefined;
+        }
+    }
+    var _off = this.canvas_$.offset(),
+        _point = new paper.Point([
+            _event.pageX - _off.left,
+            _event.pageY - _off.top
+        ]),
+        _coords = this.toModelCoords(_point),
+        _nodedata = {
+            id: Rkns.Utils.getUID('node'),
+            created_by: this.renkan.current_user,
+            uri: newNode.uri || "",
+            title: newNode.title || "",
+            description: newNode.description || "",
+            image: newNode.image || "",
+            color: newNode.color || undefined,
+            position: {
+                x: _coords.x,
+                y: _coords.y
+            }
+        };
+    var _node = this.renkan.project.addNode(_nodedata),
+        _repr = this.getRepresentationByModel(_node);
+    if (_event.type === "drop") {
+        _repr.openEditor();
+    }
+};
+
+          /* *********************************************************
+                          end of        paper-renderer.js
+          ************************************************************
+          ************************************************************
+                          start of      full-json.js
+          ********************************************************* */
+
+/* Saves the Full JSON at each modification */
+
+Rkns.jsonIO = function(_renkan, _opts) {
+    var _proj = _renkan.project;
+    if (typeof _opts.http_method == "undefined") {
+        _opts.http_method = 'PUT';
+    }
+    var _load = function() {
+        Rkns.$.getJSON(_opts.url, function(_data) {
+            _proj.set(_data, {validate: true});
+            _renkan.renderer.autoScale();
+        });
+    };
+    var _save = function() {
+        var _data = _proj.toJSON();
+        if (!_renkan.read_only) {
+            Rkns.$.ajax({
+                type: _opts.http_method,
+                url: _opts.url,
+                contentType: "application/json",
+                data: JSON.stringify(_data),
+                success: function(data, textStatus, jqXHR) {
+                }
+            });
+        }
+        
+    };
+    var _thrSave = Rkns._.throttle(
+        function() {
+            setTimeout(_save, 100);
+        }, 1000);
+    _proj.on("add:nodes add:edges add:users", function(_model) {
+        _model.on("change remove", function(_model) {
+            _thrSave();
+        });
+        _thrSave();
+    });
+    _proj.on("change", function() {
+        _thrSave();
+    });
+        
+    _load();
+};
+
+          /* *********************************************************
+                          end of        full-json.js
+          ************************************************************
+          */