client/js/paper-renderer.js
changeset 290 8a6eb26ac87f
parent 289 32e5f491ba1d
child 291 8cafab7c4b18
--- a/client/js/paper-renderer.js	Wed May 14 14:52:34 2014 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,2679 +0,0 @@
-/* paper-renderer.js */
-"use strict";
-
-(function(root) {
-
-    var Rkns = root.Rkns,
-    _ = Rkns._,
-    $ = Rkns.$;
-
-    /* Rkns.Renderer Object */
-
-    /* This object contains constants, utility functions and classes for Renkan's Graph Manipulation GUI */
-
-    var Renderer = Rkns.Renderer = {};
-
-    /* Rkns.Renderer._BaseRepresentation Class */
-
-    /* In Renkan, a "Representation" is a sort of ViewModel (in the MVVM paradigm) and bridges the gap between
-     * models (written with Backbone.js) and the view (written with Paper.js)
-     * Renkan's representations all inherit from Rkns.Renderer._BaseRepresentation '*/
-
-    var _BaseRepresentation = 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 Methods */
-
-    _(_BaseRepresentation.prototype).extend({
-        _super: function(_func) {
-            return _BaseRepresentation.prototype[_func].apply(this, Array.prototype.slice.call(arguments, 1));
-        },
-        redraw: function() {},
-        moveTo: function() {},
-        show: function() {},
-        hide: function() {},
-        select: function() {
-            if (this.model) {
-                this.model.trigger("selected");
-            }
-        },
-        unselect: function() {
-            if (this.model) {
-                this.model.trigger("unselected");
-            }
-        },
-        highlight: function() {},
-        unhighlight: function() {},
-        mousedown: function() {},
-        mouseup: function() {
-            if (this.model) {
-                this.model.trigger("clicked");
-            }
-        },
-        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 );
-            }
-        }
-    });
-
-    /* End of Rkns.Renderer._BaseRepresentation Class */
-
-    /* Rkns.Renderer._BaseButton Class */
-
-    /* BaseButton is extended by contextual buttons that appear when hovering on nodes and edges */
-
-    var _BaseButton = Renderer._BaseButton = Rkns.Utils.inherit(_BaseRepresentation);
-
-    _(_BaseButton.prototype).extend({
-        moveTo: function(_pos) {
-            this.sector.moveTo(_pos);
-        },
-        show: function() {
-            this.sector.show();
-        },
-        hide: function() {
-            this.sector.hide();
-        },
-        select: function() {
-            this.sector.select();
-        },
-        unselect: function(_newTarget) {
-            this.sector.unselect();
-            if (!_newTarget || (_newTarget !== this.source_representation && _newTarget.source_representation !== this.source_representation)) {
-                this.source_representation.unselect();
-            }
-        },
-        destroy: function() {
-            this.sector.destroy();
-        }
-    });
-
-    /* End of Rkns.Renderer._BaseButton Class */
-
-    /* Rkns.Renderer.Node Class */
-
-    /* The representation for the node : A circle, with an image inside and a text label underneath.
-     * The circle and the image are drawn on canvas and managed by Paper.js.
-     * The text label is an HTML node, managed by jQuery. */
-
-    var NodeRepr = Renderer.Node = Rkns.Utils.inherit(_BaseRepresentation);
-
-    _(NodeRepr.prototype).extend({
-        _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 = $('<div class="Rk-Label">').appendTo(this.renderer.labels_$);
-            if (this.options.editor_mode) {
-                this.normal_buttons = [
-                                       new NodeEditButton(this.renderer, null),
-                                       new NodeRemoveButton(this.renderer, null),
-                                       new NodeLinkButton(this.renderer, null),
-                                       new NodeEnlargeButton(this.renderer, null),
-                                       new NodeShrinkButton(this.renderer, null)
-                                       ];
-                this.pending_delete_buttons = [
-                                               new 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);
-            }
-        },
-        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.Utils._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();
-                });
-                this.circle.scale(this.circle_radius / this.last_circle_radius);
-                if (this.node_image) {
-                    this.node_image.scale(this.circle_radius / this.last_circle_radius);
-                }
-            }
-            this.circle.position = this.paper_coords;
-            if (this.node_image) {
-                this.node_image.position = this.paper_coords.subtract(this.image_delta.multiply(this.circle_radius));
-            }
-            this.last_circle_radius = this.circle_radius;
-
-            var old_act_btn = this.active_buttons;
-
-            var opacity = 1;
-            if (this.model.get("delete_scheduled")) {
-                opacity = .5;
-                this.active_buttons = this.pending_delete_buttons;
-                this.circle.dashArray = [2,2];
-            } else {
-                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.Utils.shortenText(_text, this.options.node_label_max_length);
-
-            if (typeof this.highlighted === "object") {
-                this.title.html(this.highlighted.replace(_(_text).escape(),'<span class="Rk-Highlighted">$1</span>'));
-            } else {
-                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.Utils._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 lastImage = this.img;
-            this.img = this.model.get("image");
-            if (this.img && this.img !== lastImage) {
-                this.showImage();
-            }
-            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) {
-                var _this = this;
-                _.each(
-                        this.project.get("edges").filter(
-                                function (ed) {
-                                    return ((ed.get("to") === _this.model) || (ed.get("from") === _this.model));
-                                }
-                        ),
-                        function(edge, index, list) {
-                            var repr = _this.renderer.getRepresentationByModel(edge);
-                            if (repr && typeof repr.from_representation !== "undefined" && typeof repr.from_representation.paper_coords !== "undefined" && typeof repr.to_representation !== "undefined" && typeof repr.to_representation.paper_coords !== "undefined") {
-                                repr.redraw();
-                            }
-                        }
-                );
-            }
-
-        },
-        showImage: function() {
-            var _image = null;
-            if (typeof this.renderer.image_cache[this.img] === "undefined") {
-                _image = new Image();
-                this.renderer.image_cache[this.img] = _image;
-                _image.src = this.img;
-            } else {
-                _image = this.renderer.image_cache[this.img];
-            }
-            if (_image.width) {
-                if (this.node_image) {
-                    this.node_image.remove();
-                }
-                this.renderer.node_layer.activate();
-                var width = _image.width,
-                height = _image.height,
-                clipPath = this.model.get("clip_path"),
-                hasClipPath = (typeof clipPath !== "undefined" && clipPath),
-                _clip = null,
-                baseRadius = null,
-                centerPoint = null;
-
-                if (hasClipPath) {
-                    _clip = new paper.Path();
-                    var instructions = clipPath.match(/[a-z][^a-z]+/gi) || [],
-                    lastCoords = [0,0],
-                    minX = Infinity,
-                    minY = Infinity,
-                    maxX = -Infinity,
-                    maxY = -Infinity;
-
-                    var transformCoords = function(tabc, relative) {
-                        var newCoords = tabc.slice(1).map(function(v, k) {
-                            var res = parseFloat(v),
-                            isY = k % 2;
-                            if (isY) {
-                                res = ( res - .5 ) * height;
-                            } else {
-                                res = ( res - .5 ) * width;
-                            }
-                            if (relative) {
-                                res += lastCoords[isY];
-                            }
-                            if (isY) {
-                                minY = Math.min(minY, res);
-                                maxY = Math.max(maxY, res);
-                            } else {
-                                minX = Math.min(minX, res);
-                                maxX = Math.max(maxX, res);
-                            }
-                            return res;
-                        });
-                        lastCoords = newCoords.slice(-2);
-                        return newCoords;
-                    };
-
-                    instructions.forEach(function(instr) {
-                        var coords = instr.match(/([a-z]|[0-9.-]+)/ig) || [""];
-                        switch(coords[0]) {
-                        case "M":
-                            _clip.moveTo(transformCoords(coords));
-                            break;
-                        case "m":
-                            _clip.moveTo(transformCoords(coords, true));
-                            break;
-                        case "L":
-                            _clip.lineTo(transformCoords(coords));
-                            break;
-                        case "l":
-                            _clip.lineTo(transformCoords(coords, true));
-                            break;
-                        case "C":
-                            _clip.cubicCurveTo(transformCoords(coords));
-                            break;
-                        case "c":
-                            _clip.cubicCurveTo(transformCoords(coords, true));
-                            break;
-                        case "Q":
-                            _clip.quadraticCurveTo(transformCoords(coords));
-                            break;
-                        case "q":
-                            _clip.quadraticCurveTo(transformCoords(coords, true));
-                            break;
-                        }
-                    });
-
-                    baseRadius = Math[this.options.node_images_fill_mode ? "min" : "max"](maxX - minX, maxY - minY) / 2;
-                    centerPoint = new paper.Point((maxX + minX) / 2, (maxY + minY) / 2);
-                    if (!this.options.show_node_circles) {
-                        this.h_ratio = (maxY - minY) / (2 * baseRadius);
-                    }
-                } else {
-                    baseRadius = Math[this.options.node_images_fill_mode ? "min" : "max"](width, height) / 2;
-                    centerPoint = new paper.Point(0,0);
-                    if (!this.options.show_node_circles) {
-                        this.h_ratio = height / (2 * baseRadius);
-                    }
-                }
-                var _raster = new paper.Raster(_image);
-                _raster.locked = true; // Disable mouse events on icon
-                if (hasClipPath) {
-                    _raster = new paper.Group(_clip, _raster);
-                    _raster.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).
-                     */
-                    _raster.clipped = true;
-                    _clip.__representation = this;
-                }
-                if (this.options.clip_node_images) {
-                    var _circleClip = new paper.Path.Circle(centerPoint, baseRadius);
-                    _raster = new paper.Group(_circleClip, _raster);
-                    _raster.opacity = .99;
-                    _raster.clipped = true;
-                    _circleClip.__representation = this;
-                }
-                this.image_delta = centerPoint.divide(baseRadius);
-                this.node_image = _raster;
-                this.node_image.__representation = _this;
-                this.node_image.scale(this.circle_radius / baseRadius);
-                this.node_image.position = this.paper_coords.subtract(this.image_delta.multiply(this.circle_radius));
-                this.redraw();
-                this.renderer.throttledPaperDraw();
-            } else {
-                var _this = this;
-                $(_image).on("load", function() {
-                    _this.showImage();
-                });
-            }
-        },
-        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);
-            }
-        },
-        openEditor: function() {
-            this.renderer.removeRepresentationsOfType("editor");
-            var _editor = this.renderer.addRepresentation("NodeEditor",null);
-            _editor.source_representation = this;
-            _editor.draw();
-        },
-        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) {
-                $('.Rk-Bin-Item').each(function() {
-                    var _el = $(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");
-        },
-        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;
-                $('.Rk-Bin-Item').removeClass("selected");
-                if (this.renderer.minimap) {
-                    this.minimap_circle.strokeColor = undefined;
-                }
-                this._super("unselect");
-            }
-        },
-        highlight: function(textToReplace) {
-            var hlvalue = textToReplace || true;
-            if (this.highlighted === hlvalue) {
-                return;
-            }
-            this.highlighted = hlvalue;
-            this.redraw();
-            this.renderer.throttledPaperDraw();
-        },
-        unhighlight: function() {
-            if (!this.highlighted) {
-                return;
-            }
-            this.highlighted = false;
-            this.redraw();
-            this.renderer.throttledPaperDraw();
-        },
-        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);
-            }
-        },
-        mousedown: function(_event, _isTouch) {
-            if (_isTouch) {
-                this.renderer.unselectAll();
-                this.select();
-            }
-        },
-        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;
-        },
-        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();
-            }
-        }
-    });
-
-    /* */
-
-    var Edge = Renderer.Edge = Rkns.Utils.inherit(_BaseRepresentation);
-
-    _(Edge.prototype).extend({
-        _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 = $('<div class="Rk-Label Rk-Edge-Label">').appendTo(this.renderer.labels_$);
-            this.arrow_angle = 0;
-            if (this.options.editor_mode) {
-                this.normal_buttons = [
-                                       new EdgeEditButton(this.renderer, null),
-                                       new EdgeRemoveButton(this.renderer, null)
-                                       ];
-                this.pending_delete_buttons = [
-                                               new 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;
-            }
-        },
-        redraw: function() {
-            var from = this.model.get("from"),
-            to = this.model.get("to");
-            if (!from || !to) {
-                return;
-            }
-            this.from_representation = this.renderer.getRepresentationByModel(from);
-            this.to_representation = this.renderer.getRepresentationByModel(to);
-            if (typeof this.from_representation === "undefined" || typeof this.to_representation === "undefined") {
-                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.Utils._USER_PLACEHOLDER(this.renkan)).get("color"),
-            opacity = 1;
-
-            if (this.model.get("delete_scheduled") || this.from_representation.model.get("delete_scheduled") || this.to_representation.model.get("delete_scheduled")) {
-                opacity = .5;
-                this.line.dashArray = [2, 2];
-            } else {
-                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.Utils.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")));
-            }
-        },
-        openEditor: function() {
-            this.renderer.removeRepresentationsOfType("editor");
-            var _editor = this.renderer.addRepresentation("EdgeEditor",null);
-            _editor.source_representation = this;
-            _editor.draw();
-        },
-        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");
-        },
-        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");
-            }
-        },
-        mousedown: function(_event, _isTouch) {
-            if (_isTouch) {
-                this.renderer.unselectAll();
-                this.select();
-            }
-        },
-        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;
-        },
-        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);
-            }
-        },
-        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 = _(this.bundle.edges).reject(function(_edge) {
-                return _this === _edge;
-            });
-        }
-    });
-
-    /* */
-
-    var TempEdge = Renderer.TempEdge = Rkns.Utils.inherit(_BaseRepresentation);
-
-    _(TempEdge.prototype).extend({
-        _init: function() {
-            this.renderer.edge_layer.activate();
-            this.type = "Temp-edge";
-
-            var _color = (this.project.get("users").get(this.renkan.current_user) || Rkns.Utils._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;
-        },
-        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;
-        },
-        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();
-        },
-        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();
-            }
-        },
-        destroy: function() {
-            this.arrow.remove();
-            this.line.remove();
-        }
-    });
-
-    /* */
-
-    var _BaseEditor = Renderer._BaseEditor = Rkns.Utils.inherit(_BaseRepresentation);
-
-    _(_BaseEditor.prototype).extend({
-        _init: function() {
-            this.renderer.buttons_layer.activate();
-            this.type = "editor";
-            this.editor_block = new paper.Path();
-            var _pts = _(_.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_$ = $('<div>')
-            .appendTo(this.renderer.editor_$)
-            .css({
-                position: "absolute",
-                opacity: .8
-            })
-            .hide();
-        },
-        destroy: function() {
-            this.editor_block.remove();
-            this.editor_$.remove();
-        }
-    });
-
-    /* */
-
-    var NodeEditor = Renderer.NodeEditor = Rkns.Utils.inherit(_BaseEditor);
-
-    _(NodeEditor.prototype).extend({
-        template: _.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>'
-                + '<% if (options.show_node_editor_uri) { %><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><% } %>'
-                + '<% if (options.show_node_editor_description) { %><p><label><%-renkan.translate("Description:")%></label><textarea class="Rk-Edit-Description"><%-node.description%></textarea></p><% } %>'
-                + '<% if (options.show_node_editor_size) { %><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><% } %>'
-                + '<% if (options.show_node_editor_color) { %><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>'
-                + '<%= renkan.colorPicker %><span class="Rk-Edit-ColorPicker-Text"><%- renkan.translate("Choose color") %></span></div></div><% } %>'
-                + '<% if (options.show_node_editor_image) { %><div class="Rk-Edit-ImgWrap"><div class="Rk-Edit-ImgPreview"><img src="<%-node.image || node.image_placeholder%>" />'
-                + '<% if (node.clip_path) { %><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewbox="0 0 1 1" preserveAspectRatio="none"><path style="stroke-width: .02; stroke:red; fill-opacity:.3; fill:red;" d="<%- node.clip_path %>"/></svg><% }%>'
-                + '</div></div><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 (options.show_node_editor_creator && 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><%- shortenText(node.created_by_title, 25) %></p><% } %>'
-        ),
-        readOnlyTemplate: _.template(
-                '<h2><span class="Rk-CloseX">&times;</span><% if (options.show_node_tooltip_color) { %><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 && options.show_node_tooltip_uri) { %><p class="Rk-Display-URI"><a href="<%-node.uri%>" target="_blank"><%-node.short_uri%></a></p><% } %>'
-                + '<% if (options.show_node_tooltip_description) { %><p class="Rk-Display-Description"><%-node.description%></p><% } %>'
-                + '<% if (node.image && options.show_node_tooltip_image) { %><img class="Rk-Display-ImgPreview" src="<%-node.image%>" /><% } %>'
-                + '<% if (node.has_creator && options.show_node_tooltip_creator) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("Created by:")%></span><span class="Rk-UserColor" style="background:<%-node.created_by_color%>;"></span><%- shortenText(node.created_by_title, 25) %></p><% } %>'
-        ),
-        draw: function() {
-            var _model = this.source_representation.model,
-            _created_by = _model.get("created_by") || Rkns.Utils._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.Utils.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
-                    description: _model.get("description"),
-                    image: _model.get("image") || "",
-                    image_placeholder: _image_placeholder,
-                    color: _model.get("color") || _created_by.get("color"),
-                    clip_path: _model.get("clip_path") || false,
-                    created_by_color: _created_by.get("color"),
-                    created_by_title: _created_by.get("title"),
-                    size: (_size > 0 ? "+" : "") + _size
-                },
-                renkan: this.renkan,
-                options: this.options,
-                shortenText: Rkns.Utils.shortenText
-            }));
-            this.redraw();
-            var _this = this,
-            closeEditor = function() {
-                _this.renderer.removeRepresentation(_this);
-                paper.view.draw();
-            };
-
-            this.editor_$.find(".Rk-CloseX").click(closeEditor);
-
-            this.editor_$.find(".Rk-Edit-Goto").click(function() {
-                if (!_model.get("uri")) {
-                    return false;
-                }
-            });
-
-            if (this.renderer.isEditable()) {
-
-                var onFieldChange = _(function() {
-                    _(function() {
-                        if (_this.renderer.isEditable()) {
-                            var _data = {
-                                    title: _this.editor_$.find(".Rk-Edit-Title").val()
-                            };
-                            if (_this.options.show_node_editor_uri) {
-                                _data.uri = _this.editor_$.find(".Rk-Edit-URI").val();
-                                _this.editor_$.find(".Rk-Edit-Goto").attr("href",_data.uri || "#");
-                            }
-                            if (_this.options.show_node_editor_image) {
-                                _data.image = _this.editor_$.find(".Rk-Edit-Image").val();
-                                _this.editor_$.find(".Rk-Edit-ImgPreview").attr("src", _data.image || _image_placeholder);
-                            }
-                            if (_this.options.show_node_editor_description) {
-                                _data.description = _this.editor_$.find(".Rk-Edit-Description").val();
-                            }
-                            _model.set(_data);
-                            _this.redraw();
-                        } else {
-                            closeEditor();
-                        }
-
-                    }).defer();
-                }).throttle(500);
-
-                this.editor_$.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 > (_this.options.uploaded_image_max_kb * 1024)) {
-                            alert(_this.renkan.translate("Image size must be under ") + _this.options.uploaded_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.Utils._USER_PLACEHOLDER(_this.renkan)).get("color"));
-                        }
-                ).click(function(_e) {
-                    _e.preventDefault();
-                    if (_this.renderer.isEditable()) {
-                        _model.set("color", $(this).attr("data-color"));
-                        _picker.hide();
-                        paper.view.draw();
-                    } else {
-                        closeEditor();
-                    }
-                });
-
-                var shiftSize = function(n) {
-                    if (_this.renderer.isEditable()) {
-                        var _newsize = n+(_model.get("size") || 0);
-                        _this.editor_$.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;
-                });
-            } else {
-                if (typeof this.source_representation.highlighted === "object") {
-                    var titlehtml = this.source_representation.highlighted.replace(_(_model.get("title")).escape(),'<span class="Rk-Highlighted">$1</span>');
-                    this.editor_$.find(".Rk-Display-Title" + (_model.get("uri") ? " a" : "")).html(titlehtml);
-                    if (this.options.show_node_tooltip_description) {
-                        this.editor_$.find(".Rk-Display-Description").html(this.source_representation.highlighted.replace(_(_model.get("description")).escape(),'<span class="Rk-Highlighted">$1</span>'));
-                    }
-                }
-            }
-            this.editor_$.find("img").load(function() {
-                _this.redraw();
-            });
-        },
-        redraw: function() {
-            var _coords = this.source_representation.paper_coords;
-            Rkns.Utils.drawEditBox(this.options, _coords, this.editor_block, this.source_representation.circle_radius * .75, this.editor_$);
-            this.editor_$.show();
-            paper.view.draw();
-        }
-    });
-
-    /* */
-
-    var EdgeEditor = Renderer.EdgeEditor = Rkns.Utils.inherit(_BaseEditor);
-
-    _(EdgeEditor.prototype).extend({
-        template: _.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>'
-                + '<% if (options.show_edge_editor_uri) { %><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 (options.properties.length) { %><p><label><%-renkan.translate("Choose from vocabulary:")%></label><select class="Rk-Edit-Vocabulary">'
-                + '<% _(options.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><% } } %>'
-                + '<% if (options.show_edge_editor_color) { %><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>'
-                + '<%= renkan.colorPicker %><span class="Rk-Edit-ColorPicker-Text"><%- renkan.translate("Choose color") %></span></div></div><% } %>'
-                + '<% if (options.show_edge_editor_direction) { %><p><span class="Rk-Edit-Direction"><%- renkan.translate("Change edge direction") %></span></p><% } %>'
-                + '<% if (options.show_edge_editor_nodes) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("From:")%></span><span class="Rk-UserColor" style="background:<%-edge.from_color%>;"></span><%- 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><%- shortenText(edge.to_title, 25) %></p><% } %>'
-                + '<% if (options.show_edge_editor_creator && 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><%- shortenText(edge.created_by_title, 25) %></p><% } %>'
-        ),
-        readOnlyTemplate: _.template(
-                '<h2><span class="Rk-CloseX">&times;</span><% if (options.show_edge_tooltip_color) { %><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 (options.show_edge_tooltip_uri && edge.uri) { %><p class="Rk-Display-URI"><a href="<%-edge.uri%>" target="_blank"><%-edge.short_uri%></a></p><% } %>'
-                + '<p><%-edge.description%></p>'
-                + '<% if (options.show_edge_tooltip_nodes) { %><p><span class="Rk-Editor-Label"><%-renkan.translate("From:")%></span><span class="Rk-UserColor" style="background:<%-edge.from_color%>;"></span><%- 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><%- shortenText(edge.to_title, 25) %></p><% } %>'
-                + '<% if (options.show_edge_tooltip_creator && 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><%- shortenText(edge.created_by_title, 25) %></p><% } %>'
-        ),
-        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.Utils._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.Utils.shortenText((_model.get("uri") || "").replace(/^(https?:\/\/)?(www\.)?/,'').replace(/\/$/,''),40),
-                    description: _model.get("description"),
-                    color: _model.get("color") || _created_by.get("color"),
-                    from_title: _from_model.get("title"),
-                    to_title: _to_model.get("title"),
-                    from_color: _from_model.get("color") || (_from_model.get("created_by") || Rkns.Utils._USER_PLACEHOLDER(this.renkan)).get("color"),
-                    to_color: _to_model.get("color") || (_to_model.get("created_by") || Rkns.Utils._USER_PLACEHOLDER(this.renkan)).get("color"),
-                    created_by_color: _created_by.get("color"),
-                    created_by_title: _created_by.get("title")
-                },
-                renkan: this.renkan,
-                shortenText: Rkns.Utils.shortenText,
-                options: this.options
-            }));
-            this.redraw();
-            var _this = this,
-            closeEditor = function() {
-                _this.renderer.removeRepresentation(_this);
-                paper.view.draw();
-            };
-            this.editor_$.find(".Rk-CloseX").click(closeEditor);
-            this.editor_$.find(".Rk-Edit-Goto").click(function() {
-                if (!_model.get("uri")) {
-                    return false;
-                }
-            });
-
-            if (this.renderer.isEditable()) {
-
-                var onFieldChange = _(function() {
-                    _(function() {
-                        if (_this.renderer.isEditable()) {
-                            var _data = {
-                                    title: _this.editor_$.find(".Rk-Edit-Title").val()
-                            };
-                            if (_this.options.show_edge_editor_uri) {
-                                _data.uri = _this.editor_$.find(".Rk-Edit-URI").val();
-                            }
-                            _this.editor_$.find(".Rk-Edit-Goto").attr("href",_data.uri || "#");
-                            _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.Utils._USER_PLACEHOLDER(_this.renkan)).get("color"));
-                        }
-                ).click(function(_e) {
-                    _e.preventDefault();
-                    if (_this.renderer.isEditable()) {
-                        _model.set("color", $(this).attr("data-color"));
-                        _picker.hide();
-                        paper.view.draw();
-                    } else {
-                        closeEditor();
-                    }
-                });
-            }
-        },
-        redraw: function() {
-            var _coords = this.source_representation.paper_coords;
-            Rkns.Utils.drawEditBox(this.options, _coords, this.editor_block, 5, this.editor_$);
-            this.editor_$.show();
-            paper.view.draw();
-        }
-    });
-
-    /* */
-
-    var _NodeButton = Renderer._NodeButton = Rkns.Utils.inherit(_BaseButton);
-
-    _(_NodeButton.prototype).extend({
-        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.Utils._NODE_BUTTON_WIDTH + sectorInner,
-                        this.startAngle,
-                        this.endAngle,
-                        1,
-                        this.imageName,
-                        this.renkan.translate(this.text)
-                );
-                this.lastSectorInner = sectorInner;
-            }
-        }
-    });
-
-    /* */
-
-    var NodeEditButton = Renderer.NodeEditButton = Rkns.Utils.inherit(_NodeButton);
-
-    _(NodeEditButton.prototype).extend({
-        _init: function() {
-            this.type = "Node-edit-button";
-            this.lastSectorInner = 0;
-            this.startAngle = -135;
-            this.endAngle = -45;
-            this.imageName = "edit";
-            this.text = "Edit";
-        },
-        mouseup: function() {
-            if (!this.renderer.is_dragging) {
-                this.source_representation.openEditor();
-            }
-        }
-    });
-
-    /* */
-
-    var NodeRemoveButton = Renderer.NodeRemoveButton = Rkns.Utils.inherit(_NodeButton);
-
-    _(NodeRemoveButton.prototype).extend({
-        _init: function() {
-            this.type = "Node-remove-button";
-            this.lastSectorInner = 0;
-            this.startAngle = 0;
-            this.endAngle = 90;
-            this.imageName = "remove";
-            this.text = "Remove";
-        },
-        mouseup: function() {
-            this.renderer.click_target = null;
-            this.renderer.is_dragging = false;
-            this.renderer.removeRepresentationsOfType("editor");
-            if (this.renderer.isEditable()) {
-                if (this.options.element_delete_delay) {
-                    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);
-                } else {
-                    if (confirm(this.renkan.translate('Do you really wish to remove node ') + '"' + this.source_representation.model.get("title") + '"?')) {
-                        this.project.removeNode(this.source_representation.model);
-                    }
-                }
-            }
-        }
-    });
-
-    /* */
-
-    var NodeRevertButton = Renderer.NodeRevertButton = Rkns.Utils.inherit(_NodeButton);
-
-    _(NodeRevertButton.prototype).extend({
-        _init: function() {
-            this.type = "Node-revert-button";
-            this.lastSectorInner = 0;
-            this.startAngle = -135;
-            this.endAngle = 135;
-            this.imageName = "revert";
-            this.text = "Cancel deletion";
-        },
-        mouseup: function() {
-            this.renderer.click_target = null;
-            this.renderer.is_dragging = false;
-            if (this.renderer.isEditable()) {
-                this.source_representation.model.unset("delete_scheduled");
-            }
-        }
-    });
-
-    /* */
-
-    var NodeLinkButton = Renderer.NodeLinkButton = Rkns.Utils.inherit(_NodeButton);
-
-    _(NodeLinkButton.prototype).extend({
-        _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";
-        },
-        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);
-            }
-        }
-    });
-
-    /* */
-
-    var NodeEnlargeButton = Renderer.NodeEnlargeButton = Rkns.Utils.inherit(_NodeButton);
-
-    _(NodeEnlargeButton.prototype).extend({
-        _init: function() {
-            this.type = "Node-enlarge-button";
-            this.lastSectorInner = 0;
-            this.startAngle = -45;
-            this.endAngle = 0;
-            this.imageName = "enlarge";
-            this.text = "Enlarge";
-        },
-        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();
-        }
-    });
-
-    /* */
-
-    var NodeShrinkButton = Renderer.NodeShrinkButton = Rkns.Utils.inherit(_NodeButton);
-
-    _(NodeShrinkButton.prototype).extend({
-        _init: function() {
-            this.type = "Node-shrink-button";
-            this.lastSectorInner = 0;
-            this.startAngle = -180;
-            this.endAngle = -135;
-            this.imageName = "shrink";
-            this.text = "Shrink";
-        },
-        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();
-        }
-    });
-
-    /* */
-
-    var EdgeEditButton = Renderer.EdgeEditButton = Rkns.Utils.inherit(_BaseButton);
-
-    _(EdgeEditButton.prototype).extend({
-        _init: function() {
-            this.type = "Edge-edit-button";
-            this.sector = this.renderer.drawSector(this, Rkns.Utils._EDGE_BUTTON_INNER, Rkns.Utils._EDGE_BUTTON_OUTER, -270, -90, 1, "edit", this.renkan.translate("Edit"));
-        },
-        mouseup: function() {
-            if (!this.renderer.is_dragging) {
-                this.source_representation.openEditor();
-            }
-        }
-    });
-
-    /* */
-
-    var EdgeRemoveButton = Renderer.EdgeRemoveButton = Rkns.Utils.inherit(_BaseButton);
-
-    _(EdgeRemoveButton.prototype).extend({
-        _init: function() {
-            this.type = "Edge-remove-button";
-            this.sector = this.renderer.drawSector(this, Rkns.Utils._EDGE_BUTTON_INNER, Rkns.Utils._EDGE_BUTTON_OUTER, -90, 90, 1, "remove", this.renkan.translate("Remove"));
-        },
-        mouseup: function() {
-            this.renderer.click_target = null;
-            this.renderer.is_dragging = false;
-            this.renderer.removeRepresentationsOfType("editor");
-            if (this.renderer.isEditable()) {
-                if (this.options.element_delete_delay) {
-                    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);
-                } else {
-                    if (confirm(this.renkan.translate('Do you really wish to remove edge ') + '"' + this.source_representation.model.get("title") + '"?')) {
-                        this.project.removeEdge(this.source_representation.model);
-                    }
-                }
-            }
-        }
-    });
-
-    /* */
-
-    var EdgeRevertButton = Renderer.EdgeRevertButton = Rkns.Utils.inherit(_BaseButton);
-
-    _(EdgeRevertButton.prototype).extend({
-        _init: function() {
-            this.type = "Edge-revert-button";
-            this.sector = this.renderer.drawSector(this, Rkns.Utils._EDGE_BUTTON_INNER, Rkns.Utils._EDGE_BUTTON_OUTER, -135, 135, 1, "revert", this.renkan.translate("Cancel deletion"));
-        },
-        mouseup: function() {
-            this.renderer.click_target = null;
-            this.renderer.is_dragging = false;
-            if (this.renderer.isEditable()) {
-                this.source_representation.model.unset("delete_scheduled");
-            }
-        }
-    });
-
-    /* */
-
-    var MiniFrame = Renderer.MiniFrame = Rkns.Utils.inherit(_BaseRepresentation);
-
-    _(MiniFrame.prototype).extend({
-        paperShift: function(_delta) {
-            this.renderer.offset = this.renderer.offset.subtract(_delta.divide(this.renderer.minimap.scale).multiply(this.renderer.scale));
-            this.renderer.redraw();
-        },
-        mouseup: function(_delta) {
-            this.renderer.click_target = null;
-            this.renderer.is_dragging = false;
-        }
-    });
-
-    /* */
-
-    var Scene = Renderer.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);
-        }, Rkns.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 < Rkns.Utils._DOUBLETAP_DELAY
-                        && ( Math.pow(_lastTapX - _touches.pageX, 2) + Math.pow(_lastTapY - _touches.pageY, 2) < Rkns.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:" + Rkns.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 = Rkns.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) > Rkns.Utils._MIN_SCALE && (_newScale/this.initialScale) < Rkns.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 _repr = new Renderer[_type](this, _model);
-            console.log("REPR RENKAN",_repr);
-            console.log("REPR RENKAN",Renderer[_type]);
-            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 > Rkns.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 === Rkns.Utils._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.Utils._CLICKMODE_STARTEDGE && this.click_target && this.click_target.type === "Node") {
-                    this.removeRepresentationsOfType("editor");
-                    this.addTempEdge(this.click_target, _point);
-                    this.click_mode = Rkns.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: 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();
-        },
-        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: 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,
-                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_$.height()
-                                       ]).multiply( .5 * ( 1 - Math.SQRT2 ) ).add(this.offset.multiply( Math.SQRT2 ));
-            this.setScale( _newScale, _offset );
-        },
-        addNodeBtn: function() {
-            if (this.click_mode === Rkns.Utils._CLICKMODE_ADDNODE) {
-                this.click_mode = false;
-                this.notif_$.hide();
-            } else {
-                this.click_mode = Rkns.Utils._CLICKMODE_ADDNODE;
-                this.notif_$.text(this.renkan.translate("Click on the background canvas to add a node")).fadeIn();
-            }
-            return false;
-        },
-        addEdgeBtn: function() {
-            if (this.click_mode === Rkns.Utils._CLICKMODE_STARTEDGE || this.click_mode === Rkns.Utils._CLICKMODE_ENDEDGE) {
-                this.click_mode = false;
-                this.notif_$.hide();
-            } else {
-                this.click_mode = Rkns.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() { }
-    });
-})(window);
-
-/* END paper-renderer.js */