client/js/renderer/scene.js
changeset 284 fa8035885814
child 286 3ab8c63d26db
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/client/js/renderer/scene.js	Mon May 05 17:43:37 2014 +0200
@@ -0,0 +1,1204 @@
+"use strict";
+
+define(['jquery', 'underscore', 'requtils', 'renderer/miniframe'], function ($, _, requtils, MiniFrame) {
+    
+    var Utils = requtils.getUtils();
+    
+    /* Scene Begin */
+
+    var Scene = function(_renkan) {
+        this.renkan = _renkan;
+        this.$ = $(".Rk-Render");
+        this.representations = [];
+        this.$.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.initialScale = 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 MiniFrame(this, null);
+        }
+
+        this.throttledPaperDraw = _(function() {
+            paper.view.draw();
+        }).throttle(100);
+
+        this.bundles = [];
+        this.click_mode = false;
+
+        var _this = this,
+        _allowScroll = true,
+        _originalScale = 1,
+        _zooming = false,
+        _lastTapX = 0,
+        _lastTapY = 0;
+
+        this.image_cache = {};
+        this.icon_cache = {};
+
+        ['edit', 'remove', 'link', 'enlarge', 'shrink', 'revert' ].forEach(function(imgname) {
+            var img = new Image();
+            img.src = _renkan.options.static_url + 'img/' + imgname + '.png';
+            _this.icon_cache[imgname] = img;
+        });
+        
+        var throttledMouseMove = _.throttle(function(_event, _isTouch) {
+            _this.onMouseMove(_event, _isTouch);
+        }, Utils._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) {
+                if(_renkan.options.zoom_on_scroll) {
+                    _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 < Utils._DOUBLETAP_DELAY
+                        && ( Math.pow(_lastTapX - _touches.pageX, 2) + Math.pow(_lastTapY - _touches.pageY, 2) < Utils._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, _newOffset);
+                }
+            },
+            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 = {};
+                _(_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);
+            }
+        });
+
+        var bindClick = function(selector, fname) {
+            _this.$.find(selector).click(function(evt) {
+                _this[fname](evt);
+                return false;
+            });
+        };
+
+        bindClick(".Rk-ZoomOut", "zoomOut");
+        bindClick(".Rk-ZoomIn", "zoomIn");
+        bindClick(".Rk-ZoomFit", "autoScale");
+        this.$.find(".Rk-ZoomSave").click( function() {
+            // Save scale and offset point
+            _this.renkan.project.addView( { zoom_level:_this.scale, offset_x:_this.offset.x, offset_y:_this.offset.y } );
+        });
+        this.$.find(".Rk-ZoomSetSaved").click( function() {
+            var view = _this.renkan.project.get("views").last();
+            if(view){
+                _this.setScale(view.get("zoom_level"), new paper.Point(view.get("offset_x"), view.get("offset_y")));
+            }
+        });
+        if(this.renkan.read_only && !isNaN(parseInt(this.renkan.options.default_view))){
+            this.$.find(".Rk-ZoomSetSaved").show();
+        }
+        this.$.find(".Rk-CurrentUser").mouseenter(
+                function() { _this.$.find(".Rk-UserList").slideDown(); }
+        );
+        this.$.find(".Rk-Users").mouseleave(
+                function() { _this.$.find(".Rk-UserList").slideUp(); }
+        );
+        bindClick(".Rk-FullScreen-Button", "fullScreen");
+        bindClick(".Rk-AddNode-Button", "addNodeBtn");
+        bindClick(".Rk-AddEdge-Button", "addEdgeBtn");
+        bindClick(".Rk-Save-Button", "save");
+        bindClick(".Rk-Open-Button", "open");
+        this.$.find(".Rk-Bookmarklet-Button")
+        .attr("href","javascript:" + Utils._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() {
+            $(this).find(".Rk-TopBar-Tooltip").show();
+        }).mouseout(function() {
+            $(this).find(".Rk-TopBar-Tooltip").hide();
+        });
+        bindClick(".Rk-Fold-Bins", "foldBins");
+
+        paper.view.onResize = function(_event) {
+            // Because of paper bug which does not calculate the good height (and width a fortiori)
+            // We have to update manually the canvas's height
+            paper.view._viewSize.height =  _event.size.height = _this.canvas_$.parent().height();
+
+            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 = _.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": $(this).val()});
+        });
+
+        var _thRedrawUsers = _.throttle(function() {
+            _this.redrawUsers();
+        }, 100);
+
+        _thRedrawUsers();
+
+        // register model events
+        this.renkan.project.on("add:users remove:users", _thRedrawUsers);
+
+        this.renkan.project.on("add:views remove:views", function(_node) {
+            if(_this.renkan.project.get('views').length > 0) {
+                _this.$.find(".Rk-ZoomSetSaved").show();
+            }
+            else {
+                _this.$.find(".Rk-ZoomSetSaved").hide();
+            }
+        });
+
+        this.renkan.project.on("add:nodes", function(_node) {
+            _this.addRepresentation("Node", _node);
+            _thRedraw();
+        });
+        this.renkan.project.on("add:edges", function(_edge) {
+            _this.addRepresentation("Edge", _edge);
+            _thRedraw();
+        });
+        this.renkan.project.on("change:title", function(_model, _title) {
+            var el = _this.$.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);
+            });
+        }
+
+        if (_renkan.options.show_user_list && _renkan.options.user_color_editable) {
+            var $cpwrapper = this.$.find(".Rk-Users .Rk-Edit-ColorPicker-Wrapper"),
+            $cplist = this.$.find(".Rk-Users .Rk-Edit-ColorPicker");
+
+            $cpwrapper.hover(
+                    function(_e) {
+                        if (_this.isEditable()) {
+                            _e.preventDefault();
+                            $cplist.show();
+                        }
+                    },
+                    function(_e) {
+                        _e.preventDefault();
+                        $cplist.hide();
+                    }
+            );
+
+            $cplist.find("li").mouseenter(
+                    function(_e) {
+                        if (_this.isEditable()) {
+                            _e.preventDefault();
+                            _this.$.find(".Rk-CurrentUser-Color").css("background", $(this).attr("data-color"));
+                        }
+                    }
+            );
+        }
+
+        if (_renkan.options.show_search_field) {
+
+            var lastval = '';
+
+            this.$.find(".Rk-GraphSearch-Field").on("keyup change paste input", function() {
+                var $this = $(this),
+                val = $this.val();
+                if (val === lastval) {
+                    return;
+                }
+                lastval = val;
+                if (val.length < 2) {
+                    _renkan.project.get("nodes").each(function(n) {
+                        _this.getRepresentationByModel(n).unhighlight();
+                    });
+                } else {
+                    var rxs = Utils.regexpFromTextOrArray(val);
+                    _renkan.project.get("nodes").each(function(n) {
+                        if (rxs.test(n.get("title")) || rxs.test(n.get("description"))) {
+                            _this.getRepresentationByModel(n).highlight(rxs);
+                        } else {
+                            _this.getRepresentationByModel(n).unhighlight(); 
+                        }
+                    });
+                }
+            });
+        }
+
+        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);
+        }
+
+    };
+
+    _(Scene.prototype).extend({
+        template: _.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")%>" /><% } %>'
+                + '<% if (options.show_user_list) { %><div class="Rk-Users"><div class="Rk-CurrentUser"><div class="Rk-Edit-ColorPicker-Wrapper"><span class="Rk-CurrentUser-Color"><% if (options.user_color_editable) { %><span class="Rk-Edit-ColorTip"></span><% } %></span>'
+                + '<% if (options.user_color_editable) { print(colorPicker) } %></div><span class="Rk-CurrentUser-Name">&lt;unknown user&gt;</span></div><ul class="Rk-UserList"></ul></div><% } %>'
+                + '<% if (options.home_button_url) {%><div class="Rk-TopBar-Separator"></div><a class="Rk-TopBar-Button Rk-Home-Button" href="<%- options.home_button_url %>"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Contents">'
+                + '<%- translate(options.home_button_title) %></div></div></a><% } %>'
+                + '<% if (options.show_fullscreen_button) { %><div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-FullScreen-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Full Screen")%></div></div></div><% } %>'
+                + '<% if (options.editor_mode) { %>'
+                + '<% if (options.show_addnode_button) { %><div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-AddNode-Button"><div class="Rk-TopBar-Tooltip">'
+                + '<div class="Rk-TopBar-Tooltip-Contents"><%-translate("Add Node")%></div></div></div><% } %>'
+                + '<% if (options.show_addedge_button) { %><div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-AddEdge-Button"><div class="Rk-TopBar-Tooltip">'
+                + '<div class="Rk-TopBar-Tooltip-Contents"><%-translate("Add Edge")%></div></div></div><% } %>'
+                + '<% if (options.show_save_button) { %><div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-Save-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Contents"> </div></div></div><% } %>'
+                + '<% if (options.show_open_button) { %><div class="Rk-TopBar-Separator"></div><div class="Rk-TopBar-Button Rk-Open-Button"><div class="Rk-TopBar-Tooltip"><div class="Rk-TopBar-Tooltip-Contents"><%-translate("Open Project")%></div></div></div><% } %>'
+                + '<% if (options.show_bookmarklet) { %><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-Contents">'
+                + '<%-translate("Renkan \'Drag-to-Add\' bookmarklet")%></div></div></a><% } %>'
+                + '<div class="Rk-TopBar-Separator"></div><% }; if (options.show_search_field) { %>'
+                + '<form action="#" class="Rk-GraphSearch-Form"><input type="search" class="Rk-GraphSearch-Field" placeholder="<%- translate("Search in graph") %>" /></form><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-Notifications"></div><div class="Rk-Editor">'
+                + '<% 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-ZoomFit" title="<%-translate("Zoom Fit")%>"></div><div class="Rk-ZoomOut" title="<%-translate("Zoom Out")%>"></div>'
+                + '<% if (options.editor_mode) { %><div class="Rk-ZoomSave" title="<%-translate("Zoom Save")%>"></div><% } %>'
+                + '<% if (options.editor_mode || !isNaN(parseInt(options.default_view))) { %><div class="Rk-ZoomSetSaved" title="<%-translate("View saved zoom")%>"></div><% } %></div>'
+                + '</div></div>'
+        ),
+        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) {
+                // If _autoscale, we get the initial view (zoom+offset) set in the project datas.
+                if(this.renkan.read_only && !isNaN(parseInt(this.renkan.options.default_view))){
+                    this.autoScale(this.renkan.project.get("views")[parseInt(this.renkan.options.default_view)]);
+                }
+                else{
+                    this.autoScale();
+                }
+            }
+        },
+        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.icon_cache[_imgname],
+            _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;
+            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();
+                    }
+            };
+            var showImage = function() {
+                var _raster = new paper.Raster(_img);
+                _raster.position = _imgdelta.add(_grp.position).subtract(_delta);
+                _raster.locked = true; // Disable mouse events on icon
+                _grp.addChild(_raster);
+            };
+            if (_img.width) {
+                showImage();
+            } else {
+                $(_img).on("load",showImage);
+            }
+
+            return _res;
+        },
+        addToBundles: function(_edgeRepr) {
+            var _bundle = _(this.bundles).find(function(_bundle) {
+                return ( 
+                        ( _bundle.from === _edgeRepr.from_representation && _bundle.to === _edgeRepr.to_representation )
+                        || ( _bundle.from === _edgeRepr.to_representation && _bundle.to === _edgeRepr.from_representation )
+                );
+            });
+            if (typeof _bundle !== "undefined") {
+                _bundle.edges.push(_edgeRepr);
+            } else {
+                _bundle = {
+                        from: _edgeRepr.from_representation,
+                        to: _edgeRepr.to_representation,
+                        edges: [ _edgeRepr ],
+                        getPosition: function(_er) {
+                            var _dir = (_er.from_representation === this.from) ? 1 : -1;
+                            return _dir * ( _(this.edges).indexOf(_er) - (this.edges.length - 1) / 2 );
+                        }
+                };
+                this.bundles.push(_bundle);
+            }
+            return _bundle;
+        },
+        isEditable: function() {
+            return (this.renkan.options.editor_mode && !this.renkan.read_only);
+        },
+        onStatusChange: function() {
+            var savebtn = this.$.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("Save Project"));
+                } else {
+                    savebtn.removeClass("disabled Rk-Save-ReadOnly").addClass("Rk-Save-Online");
+                    tip.text(this.renkan.translate("Auto-save enabled"));
+                }
+            }
+            this.redrawUsers();
+        },
+        setScale: function(_newScale, _offset) {
+            if ((_newScale/this.initialScale) > Utils._MIN_SCALE && (_newScale/this.initialScale) < Utils._MAX_SCALE) {
+                this.scale = _newScale;
+                if (_offset) {
+                    this.offset = _offset;
+                }
+                this.redraw();
+            }
+        },
+        autoScale: function(force_view) {
+            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( (paper.view.size.width - 2 * this.renkan.options.autoscale_padding) / (_maxx - _minx), (paper.view.size.height - 2 * this.renkan.options.autoscale_padding) / (_maxy - _miny));
+                this.initialScale = _scale;
+                // Override calculated scale if asked
+                if((typeof force_view !== "undefined") && parseFloat(force_view.zoom_level)>0 && parseFloat(force_view.offset_x)>0 && parseFloat(force_view.offset_y)>0){
+                    this.setScale(parseFloat(force_view.zoom_level), new paper.Point(parseFloat(force_view.offset_x), parseFloat(force_view.offset_y)));
+                }
+                else{
+                    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])));
+            }
+        },
+        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);
+        },
+        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 * this.renkan.options.minimap_padding ) / (_maxx - _minx),
+                        ( this.renkan.options.minimap_height - 2 * this.renkan.options.minimap_padding ) / (_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();
+        },
+        toPaperCoords: function(_point) {
+            return _point.multiply(this.scale).add(this.offset);
+        },
+        toMinimapCoords: function(_point) {
+            return _point.multiply(this.minimap.scale).add(this.minimap.offset).add(this.minimap.topleft);
+        },
+        toModelCoords: function(_point) {
+            return _point.subtract(this.offset).divide(this.scale);
+        },
+        addRepresentation: function(_type, _model) {
+            var r = requtils.getRenderer()[_type];
+            var _repr = new r(this, _model);
+            this.representations.push(_repr);
+            return _repr;
+        },
+        addRepresentations: function(_type, _collection) {
+            var _this = this;
+            _collection.forEach(function(_model) {
+                _this.addRepresentation(_type, _model);
+            });
+        },
+        userTemplate: _.template(
+                '<li class="Rk-User"><span class="Rk-UserColor" style="background:<%=background%>;"></span><%=name%></li>'
+        ),
+        redrawUsers: function() {
+            if (!this.renkan.options.show_user_list) {
+                return;
+            }
+            var allUsers = [].concat((this.renkan.project.current_user_list || {}).models || [], (this.renkan.project.get("users") || {}).models || []),
+            ulistHtml = '',
+            $userpanel = this.$.find(".Rk-Users"),
+            $name = $userpanel.find(".Rk-CurrentUser-Name"),
+            $cpitems = $userpanel.find(".Rk-Edit-ColorPicker li"),
+            $colorsquare = $userpanel.find(".Rk-CurrentUser-Color"),
+            _this = this;
+            $name.off("click").text(this.renkan.translate("<unknown user>"));
+            $cpitems.off("mouseleave click");
+            allUsers.forEach(function(_user) {
+                if (_user.get("_id") === _this.renkan.current_user) {
+                    $name.text(_user.get("title"));
+                    $colorsquare.css("background", _user.get("color"));
+                    if (_this.isEditable()) {
+
+                        if (_this.renkan.options.user_name_editable) {
+                            $name.click(function() {
+                                var $this = $(this),
+                                $input = $('<input>').val(_user.get("title")).blur(function() {
+                                    _user.set("title", $(this).val());
+                                    _this.redrawUsers();
+                                    _this.redraw();
+                                });
+                                $this.empty().html($input);
+                                $input.select();
+                            });
+                        }
+
+                        if (_this.renkan.options.user_color_editable) {
+                            $cpitems.click(
+                                    function(_e) {
+                                        _e.preventDefault();
+                                        if (_this.isEditable()) {
+                                            _user.set("color", $(this).attr("data-color"));
+                                        }
+                                        $(this).parent().hide();
+                                    }
+                            ).mouseleave(function() {
+                                $colorsquare.css("background", _user.get("color"));
+                            });
+                        }
+                    }
+
+                } else {
+                    ulistHtml += _this.userTemplate({
+                        name: _user.get("title"),
+                        background: _user.get("color")
+                    });
+                }
+            });
+            $userpanel.find(".Rk-UserList").html(ulistHtml);
+        },
+        removeRepresentation: function(_representation) {
+            _representation.destroy();
+            this.representations = _(this.representations).reject(
+                    function(_repr) {
+                        return _repr == _representation;
+                    }
+            );
+        },
+        getRepresentationByModel: function(_model) {
+            if (!_model) {
+                return undefined;
+            }
+            return _(this.representations).find(function(_repr) {
+                return _repr.model === _model;
+            });
+        },
+        removeRepresentationsOfType: function(_type) {
+            var _representations = _(this.representations).filter(function(_repr) {
+                return _repr.type == _type;
+            }),
+            _this = this;
+            _(_representations).each(function(_repr) {
+                _this.removeRepresentation(_repr);
+            });
+        },
+        highlightModel: function(_model) {
+            var _repr = this.getRepresentationByModel(_model);
+            if (_repr) {
+                _repr.highlight();
+            }
+        },
+        unhighlightAll: function(_model) {
+            _(this.representations).each(function(_repr) {
+                _repr.unhighlight();
+            });
+        },
+        unselectAll: function(_model) {
+            _(this.representations).each(function(_repr) {
+                _repr.unselect();
+            });
+        },
+        redraw: function() {
+            _(this.representations).each(function(_representation) {
+                _representation.redraw(true);
+            });
+            if (this.minimap) {
+                this.redrawMiniframe();
+            }
+            paper.view.draw();
+        },
+        addTempEdge: function(_from, _point) {
+            var _tmpEdge = this.addRepresentation("TempEdge",null);
+            _tmpEdge.end_pos = _point;
+            _tmpEdge.from_representation = _from;
+            _tmpEdge.redraw();
+            this.click_target = _tmpEdge;
+        },
+        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;
+            }
+        },
+        paperShift: function(_delta) {
+            this.offset = this.offset.add(_delta);
+            this.redraw();
+        },
+        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 > Utils._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();
+        },
+        onMouseDown: function(_event, _isTouch) {
+            var _off = this.canvas_$.offset(),
+            _point = new paper.Point([
+                                      _event.pageX - _off.left,
+                                      _event.pageY - _off.top
+                                      ]);
+            this.last_point = _point;
+            this.mouse_down = true;
+            if (!this.click_target || this.click_target.type !== "Temp-edge") {
+                this.removeRepresentationsOfType("editor");
+                this.is_dragging = false;
+                var _hitResult = paper.project.hitTest(_point);
+                if (_hitResult && typeof _hitResult.item.__representation !== "undefined") {
+                    this.click_target = _hitResult.item.__representation;
+                    this.click_target.mousedown(_event, _isTouch);
+                } else {
+                    this.click_target = null;
+                    if (this.isEditable() && this.click_mode === Utils._CLICKMODE_ADDNODE) {
+                        var _coords = this.toModelCoords(_point),
+                        _data = {
+                            id: Utils.getUID('node'),
+                            created_by: this.renkan.current_user,
+                            position: {
+                                x: _coords.x,
+                                y: _coords.y
+                            }
+                        };
+                        _node = this.renkan.project.addNode(_data);
+                        this.getRepresentationByModel(_node).openEditor();
+                    }
+                }
+            }
+            if (this.click_mode) {
+                if (this.isEditable() && this.click_mode === Utils._CLICKMODE_STARTEDGE && this.click_target && this.click_target.type === "Node") {
+                    this.removeRepresentationsOfType("editor");
+                    this.addTempEdge(this.click_target, _point);
+                    this.click_mode = Utils._CLICKMODE_ENDEDGE;
+                    this.notif_$.fadeOut(function() {
+                        $(this).html(this.renkan.translate("Click on a second node to complete the edge")).fadeIn();
+                    });
+                } else {
+                    this.notif_$.hide();
+                    this.click_mode = false;
+                }
+            }
+            paper.view.draw();
+        },
+        onMouseUp: function(_event, _isTouch) {
+            this.mouse_down = false;
+            if (this.click_target) {
+                var _off = this.canvas_$.offset();
+                this.click_target.mouseup(
+                        {
+                            point: new paper.Point([
+                                                    _event.pageX - _off.left,
+                                                    _event.pageY - _off.top
+                                                    ])
+                        },
+                        _isTouch
+                );
+            } else {
+                this.click_target = null;
+                this.is_dragging = false;
+                if (_isTouch) {
+                    this.unselectAll();
+                }
+            }
+            paper.view.draw();
+        },
+        onScroll: function(_event, _scrolldelta) {
+            this.totalScroll += _scrolldelta;
+            if (Math.abs(this.totalScroll) >= 1) {
+                var _off = this.canvas_$.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;
+            }
+        },
+        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: 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();
+        },
+        defaultDropHandler: function(_data) {
+            var newNode = {};
+            switch(_data["text/x-iri-specific-site"]) {
+            case "twitter":
+                var snippet = $('<div>').html(_data["text/x-iri-selected-html"]),
+                tweetdiv = snippet.find(".tweet");
+                newNode.title = this.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 = $('<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 = $('<div>').html(_data["text/html"] || _data["text/x-iri-selected-html"]);
+                var _svgimgs = snippet.find("image");
+                if (_svgimgs.length) {
+                    newNode.image = _svgimgs.attr("xlink:href");
+                }
+                var _svgpaths = snippet.find("path");
+                if (_svgpaths.length) {
+                    newNode.clipPath = _svgpaths.attr("d");
+                }
+                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"]) {
+                var snippet = $('<div>').html(_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;
+                newNode.clipPath = snippet.find("[data-clip-path]").attr("data-clip-path") || newNode.clipPath;
+            }
+            }
+
+            if(typeof this.renkan.options.drop_enhancer === "function"){
+                newNode = this.renkan.options.drop_enhancer(newNode, _data);
+            }
+            return newNode;
+
+        },
+        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 = (typeof this.renkan.options.drop_handler === "undefined")?this.defaultDropHandler(_data):this.renkan.options.drop_handler(_data);
+
+            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: 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,
+                clip_path: newNode.clipPath || 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();
+            }
+        },
+        fullScreen: function() {
+            var _isFull = document.fullScreen || document.mozFullScreen || document.webkitIsFullScreen,
+            _el = this.renkan.$[0],
+            _requestMethods = ["requestFullScreen","mozRequestFullScreen","webkitRequestFullScreen"],
+            _cancelMethods = ["cancelFullScreen","mozCancelFullScreen","webkitCancelFullScreen"];
+            if (_isFull) {
+                for (var i = 0; i < _cancelMethods.length; i++) {
+                    if (typeof document[_cancelMethods[i]] === "function") {
+                        document[_cancelMethods[i]]();
+                        break;
+                    }
+                }
+            } else {
+                for (var i = 0; i < _requestMethods.length; i++) {
+                    if (typeof _el[_requestMethods[i]] === "function") {
+                        _el[_requestMethods[i]]();
+                        break;
+                    }
+                }
+            }
+        },
+        zoomOut: function() {
+            var _newScale = this.scale * Math.SQRT1_2,
+            _offset = new paper.Point([
+                                       this.canvas_$.width(),
+                                       this.canvas_$.height()
+                                       ]).multiply( .5 * ( 1 - Math.SQRT1_2 ) ).add(this.offset.multiply( Math.SQRT1_2 ));
+            this.setScale( _newScale, _offset );
+        },
+        zoomIn: function() {
+            var _newScale = this.scale * Math.SQRT2,
+            _offset = new paper.Point([
+                                       this.canvas_$.width(),
+                                       this.canvas_$.height()
+                                       ]).multiply( .5 * ( 1 - Math.SQRT2 ) ).add(this.offset.multiply( Math.SQRT2 ));
+            this.setScale( _newScale, _offset );
+        },
+        addNodeBtn: function() {
+            if (this.click_mode === Utils._CLICKMODE_ADDNODE) {
+                this.click_mode = false;
+                this.notif_$.hide();
+            } else {
+                this.click_mode = Utils._CLICKMODE_ADDNODE;
+                this.notif_$.text(this.renkan.translate("Click on the background canvas to add a node")).fadeIn();
+            }
+            return false;
+        },
+        addEdgeBtn: function() {
+            if (this.click_mode === Utils._CLICKMODE_STARTEDGE || this.click_mode === Utils._CLICKMODE_ENDEDGE) {
+                this.click_mode = false;
+                this.notif_$.hide();
+            } else {
+                this.click_mode = Utils._CLICKMODE_STARTEDGE;
+                this.notif_$.text(this.renkan.translate("Click on a first node to start the edge")).fadeIn();
+            }
+            return false;
+        },
+        foldBins: function() {
+            var foldBinsButton = this.$.find(".Rk-Fold-Bins"),
+            bins = this.renkan.$.find(".Rk-Bins");
+            if (bins.offset().left < 0) {
+                bins.animate({left: 0},250);
+                var _this = this;
+                this.$.animate({left: 300},250,function() {
+                    var w = _this.$.width();
+                    paper.view.viewSize = new paper.Size([w, _this.canvas_$.height()]);
+                });
+                foldBinsButton.html("&laquo;");
+            } else {
+                bins.animate({left: -300},250);
+                var _this = this;
+                this.$.animate({left: 0},250,function() {
+                    var w = _this.$.width();
+                    paper.view.viewSize = new paper.Size([w, _this.canvas_$.height()]);
+                });
+                foldBinsButton.html("&raquo;");
+            }
+        },
+        save: function() { },
+        open: function() { }
+    });
+    
+    /* Scene End */
+    
+    return Scene;
+    
+});