/*! JointJS v0.9.0 - JavaScript diagramming library  2014-05-13 


This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
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this},set:function(a,b){b=h.defaults(b||{},r),b.parse&&(a=this.parse(a,b)),h.isArray(a)||(a=a?[a]:[]);var c,d,f,i,j,k=b.at,l=this.comparator&&null==k&&b.sort!==!1,m=h.isString(this.comparator)?this.comparator:null,n=[],o=[],p={};for(c=0,d=a.length;d>c;c++)(f=this._prepareModel(a[c],b))&&((i=this.get(f))?(b.remove&&(p[i.cid]=!0),b.merge&&(i.set(f.attributes,b),l&&!j&&i.hasChanged(m)&&(j=!0))):b.add&&(n.push(f),f.on("all",this._onModelEvent,this),this._byId[f.cid]=f,null!=f.id&&(this._byId[f.id]=f)));if(b.remove){for(c=0,d=this.length;d>c;++c)p[(f=this.models[c]).cid]||o.push(f);o.length&&this.remove(o,b)}if(n.length&&(l&&(j=!0),this.length+=n.length,null!=k?g.apply(this.models,[k,0].concat(n)):e.apply(this.models,n)),j&&this.sort({silent:!0}),b.silent)return this;for(c=0,d=n.length;d>c;c++)(f=n[c]).trigger("add",f,this,b);return j&&this.trigger("sort",this,b),this},reset:function(a,b){b||(b={});for(var c=0,d=this.models.length;d>c;c++)this._removeReference(this.models[c]);return b.previousModels=this.models,this._reset(),this.add(a,h.extend({silent:!0},b)),b.silent||this.trigger("reset",this,b),this},push:function(a,b){return a=this._prepareModel(a,b),this.add(a,h.extend({at:this.length},b)),a},pop:function(a){var b=this.at(this.length-1);return this.remove(b,a),b},unshift:function(a,b){return a=this._prepareModel(a,b),this.add(a,h.extend({at:0},b)),a},shift:function(a){var b=this.at(0);return this.remove(b,a),b},slice:function(a,b){return this.models.slice(a,b)},get:function(a){return null==a?void 0:this._byId[null!=a.id?a.id:a.cid||a]},at:function(a){return this.models[a]},where:function(a,b){return h.isEmpty(a)?b?void 0:[]:this[b?"find":"filter"](function(b){for(var c in a)if(a[c]!==b.get(c))return!1;return!0})},findWhere:function(a){return this.where(a,!0)},sort:function(a){if(!this.comparator)throw new Error("Cannot sort a set without a comparator");return a||(a={}),h.isString(this.comparator)||1===this.comparator.length?this.models=this.sortBy(this.comparator,this):this.models.sort(h.bind(this.comparator,this)),a.silent||this.trigger("sort",this,a),this},sortedIndex:function(a,b,c){b||(b=this.comparator);var d=h.isFunction(b)?b:function(a){return a.get(b)};return h.sortedIndex(this.models,a,d,c)},pluck:function(a){return h.invoke(this.models,"get",a)},fetch:function(a){a=a?h.clone(a):{},void 0===a.parse&&(a.parse=!0);var b=a.success,c=this;return a.success=function(d){var e=a.reset?"reset":"set";c[e](d,a),b&&b(c,d,a),c.trigger("sync",c,d,a)},L(this,a),this.sync("read",this,a)},create:function(a,b){if(b=b?h.clone(b):{},!(a=this._prepareModel(a,b)))return!1;b.wait||this.add(a,b);var c=this,d=b.success;return b.success=function(e){b.wait&&c.add(a,b),d&&d(a,e,b)},a.save(null,b),a},parse:function(a){return a},clone:function(){return new 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t=["forEach","each","map","collect","reduce","foldl","inject","reduceRight","foldr","find","detect","filter","select","reject","every","all","some","any","include","contains","invoke","max","min","toArray","size","first","head","take","initial","rest","tail","drop","last","without","indexOf","shuffle","lastIndexOf","isEmpty","chain"];h.each(t,function(a){q.prototype[a]=function(){var b=f.call(arguments);return b.unshift(this.models),h[a].apply(h,b)}});var u=["groupBy","countBy","sortBy"];h.each(u,function(a){q.prototype[a]=function(b,c){var d=h.isFunction(b)?b:function(a){return a.get(b)};return h[a](this.models,d,c)}});var v=a.View=function(a){this.cid=h.uniqueId("view"),this._configure(a||{}),this._ensureElement(),this.initialize.apply(this,arguments),this.delegateEvents()},w=/^(\S+)\s*(.*)$/,x=["model","collection","el","id","attributes","className","tagName","events"];h.extend(v.prototype,i,{tagName:"div",$:function(a){return this.$el.find(a)},initialize:function(){},render:function(){return this},remove:function(){return this.$el.remove(),this.stopListening(),this},setElement:function(b,c){return this.$el&&this.undelegateEvents(),this.$el=b instanceof a.$?b:a.$(b),this.el=this.$el[0],c!==!1&&this.delegateEvents(),this},delegateEvents:function(a){if(!a&&!(a=h.result(this,"events")))return this;this.undelegateEvents();for(var b in a){var c=a[b];if(h.isFunction(c)||(c=this[a[b]]),c){var d=b.match(w),e=d[1],f=d[2];c=h.bind(c,this),e+=".delegateEvents"+this.cid,""===f?this.$el.on(e,c):this.$el.on(e,f,c)}}return this},undelegateEvents:function(){return this.$el.off(".delegateEvents"+this.cid),this},_configure:function(a){this.options&&(a=h.extend({},h.result(this,"options"),a)),h.extend(this,h.pick(a,x)),this.options=a},_ensureElement:function(){if(this.el)this.setElement(h.result(this,"el"),!1);else{var b=h.extend({},h.result(this,"attributes"));this.id&&(b.id=h.result(this,"id")),this.className&&(b["class"]=h.result(this,"className"));var c=a.$("<"+h.result(this,"tagName")+">").attr(b);this.setElement(c,!1)}}}),a.sync=function(b,c,d){var e=y[b];h.defaults(d||(d={}),{emulateHTTP:a.emulateHTTP,emulateJSON:a.emulateJSON});var f={type:e,dataType:"json"};if(d.url||(f.url=h.result(c,"url")||K()),null!=d.data||!c||"create"!==b&&"update"!==b&&"patch"!==b||(f.contentType="application/json",f.data=JSON.stringify(d.attrs||c.toJSON(d))),d.emulateJSON&&(f.contentType="application/x-www-form-urlencoded",f.data=f.data?{model:f.data}:{}),d.emulateHTTP&&("PUT"===e||"DELETE"===e||"PATCH"===e)){f.type="POST",d.emulateJSON&&(f.data._method=e);var g=d.beforeSend;d.beforeSend=function(a){return a.setRequestHeader("X-HTTP-Method-Override",e),g?g.apply(this,arguments):void 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a===this.fragment&&this.iframe&&(a=this.getFragment(this.getHash(this.iframe))),a===this.fragment?!1:(this.iframe&&this.navigate(a),this.loadUrl()||this.loadUrl(this.getHash()),void 0)
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c=_.map(["y","z","a","f","p","n","µ","m","","k","M","G","T","P","E","Z","Y"],function(a,b){var c=Math.pow(10,3*abs(8-b));return{scale:b>8?function(a){return a/c}:function(a){return a*c},symbol:a}}),d=0;return a&&(0>a&&(a*=-1),b&&(a=d3.round(a,this.precision(a,b))),d=1+Math.floor(1e-12+Math.log(a)/Math.LN10),d=Math.max(-24,Math.min(24,3*Math.floor((0>=d?d+1:d-1)/3)))),c[8+d/3]}}}};if("object"==typeof exports&&(module.exports=joint),"object"==typeof exports)var joint={dia:{Link:require("./joint.dia.link").Link,Element:require("./joint.dia.element").Element},shapes:require("../plugins/shapes")},Backbone=require("backbone"),_=require("lodash"),g=require("./geometry");if(joint.dia.GraphCells=Backbone.Collection.extend({initialize:function(){this.on("change:z",this.sort,this)},model:function(a,b){if("link"===a.type)return new joint.dia.Link(a,b);var c=a.type.split(".")[0],d=a.type.split(".")[1];return joint.shapes[c]&&joint.shapes[c][d]?new joint.shapes[c][d](a,b):new joint.dia.Element(a,b)},comparator:function(a){return a.get("z")||0},getConnectedLinks:function(a,b){b=b||{},_.isUndefined(b.inbound)&&_.isUndefined(b.outbound)&&(b.inbound=b.outbound=!0);var c=[];return this.each(function(d){var e=d.get("source"),f=d.get("target");e&&e.id===a.id&&b.outbound&&c.push(d),f&&f.id===a.id&&b.inbound&&c.push(d)}),c}}),joint.dia.Graph=Backbone.Model.extend({initialize:function(){this.set("cells",new joint.dia.GraphCells),this.get("cells").on("all",this.trigger,this),this.get("cells").on("remove",this.removeCell,this)},toJSON:function(){var a=Backbone.Model.prototype.toJSON.apply(this,arguments);return a.cells=this.get("cells").toJSON(),a},fromJSON:function(a){if(!a.cells)throw new Error("Graph JSON must contain cells array.");var b=a,c=a.cells;delete b.cells,this.set(b),this.resetCells(c)},clear:function(){this.trigger("batch:start"),this.get("cells").remove(this.get("cells").models),this.trigger("batch:stop")},_prepareCell:function(a){return a instanceof Backbone.Model&&_.isUndefined(a.get("z"))?a.set("z",this.maxZIndex()+1,{silent:!0}):_.isUndefined(a.z)&&(a.z=this.maxZIndex()+1),a},maxZIndex:function(){var a=this.get("cells").last();return a?a.get("z")||0:0},addCell:function(a,b){return _.isArray(a)?this.addCells(a,b):(this.get("cells").add(this._prepareCell(a),b||{}),this)},addCells:function(a,b){return _.each(a,function(a){this.addCell(a,b)},this),this},resetCells:function(a){return this.get("cells").reset(_.map(a,this._prepareCell,this)),this},removeCell:function(a,b,c){c&&c.disconnectLinks?this.disconnectLinks(a):this.removeLinks(a),this.get("cells").remove(a,{silent:!0})},getCell:function(a){return this.get("cells").get(a)},getElements:function(){return this.get("cells").filter(function(a){return a instanceof joint.dia.Element})},getLinks:function(){return this.get("cells").filter(function(a){return a instanceof joint.dia.Link})},getConnectedLinks:function(a,b){return this.get("cells").getConnectedLinks(a,b)},getNeighbors:function(a){var b=this.getConnectedLinks(a),c=[],d=this.get("cells");return _.each(b,function(b){var e=b.get("source"),f=b.get("target");if(!e.x){var g=d.get(e.id);g!==a&&c.push(g)}if(!f.x){var h=d.get(f.id);h!==a&&c.push(h)}}),c},disconnectLinks:function(a){_.each(this.getConnectedLinks(a),function(b){b.set(b.get("source").id===a.id?"source":"target",g.point(0,0))})},removeLinks:function(a){_.invoke(this.getConnectedLinks(a),"remove")},findModelsFromPoint:function(a){return _.filter(this.getElements(),function(b){return b.getBBox().containsPoint(a)})},findModelsInArea:function(a){return _.filter(this.getElements(),function(b){return b.getBBox().intersect(a)})}}),"object"==typeof exports&&(module.exports.Graph=joint.dia.Graph),"object"==typeof exports)var joint={util:require("./core").util,dia:{Link:require("./joint.dia.link").Link}},Backbone=require("backbone"),_=require("lodash");if(joint.dia.Cell=Backbone.Model.extend({constructor:function(a,b){var c,d=a||{};this.cid=_.uniqueId("c"),this.attributes={},b&&b.collection&&(this.collection=b.collection),b&&b.parse&&(d=this.parse(d,b)||{}),(c=_.result(this,"defaults"))&&(d=_.merge({},c,d)),this.set(d,b),this.changed={},this.initialize.apply(this,arguments)},toJSON:function(){var a=this.constructor.prototype.defaults.attrs||{},b=this.attributes.attrs,c={};_.each(b,function(b,d){var e=a[d];_.each(b,function(a,b){_.isObject(a)&&!_.isArray(a)?_.each(a,function(a,f){e&&e[b]&&_.isEqual(e[b][f],a)||(c[d]=c[d]||{},(c[d][b]||(c[d][b]={}))[f]=a)}):e&&_.isEqual(e[b],a)||(c[d]=c[d]||{},c[d][b]=a)})});var d=_.cloneDeep(_.omit(this.attributes,"attrs"));return d.attrs=c,d},initialize:function(a){a&&a.id||this.set("id",joint.util.uuid(),{silent:!0}),this._transitionIds={},this.processPorts(),this.on("change:attrs",this.processPorts,this)},processPorts:function(){var a=this.ports,b={};_.each(this.get("attrs"),function(a){a&&a.port&&(_.isUndefined(a.port.id)?b[a.port]={id:a.port}:b[a.port.id]=a.port)});var c={};if(_.each(a,function(a,d){b[d]||(c[d]=!0)}),this.collection&&!_.isEmpty(c)){var d=this.collection.getConnectedLinks(this,{inbound:!0});_.each(d,function(a){c[a.get("target").port]&&a.remove()
});var e=this.collection.getConnectedLinks(this,{outbound:!0});_.each(e,function(a){c[a.get("source").port]&&a.remove()})}this.ports=b},remove:function(a){var b=this.collection;b&&b.trigger("batch:start");var c=this.get("parent");if(c){var d=this.collection&&this.collection.get(c);d.unembed(this)}_.invoke(this.getEmbeddedCells(),"remove",a),this.trigger("remove",this,this.collection,a),b&&b.trigger("batch:stop")},toFront:function(){this.collection&&this.set("z",(this.collection.last().get("z")||0)+1)},toBack:function(){this.collection&&this.set("z",(this.collection.first().get("z")||0)-1)},embed:function(a){if(this.get("parent")==a.id)throw new Error("Recursive embedding not allowed.");this.trigger("batch:start"),a.set("parent",this.id),this.set("embeds",_.uniq((this.get("embeds")||[]).concat([a.id]))),this.trigger("batch:stop")},unembed:function(a){this.trigger("batch:start");var b=a.id;a.unset("parent"),this.set("embeds",_.without(this.get("embeds"),b)),this.trigger("batch:stop")},getEmbeddedCells:function(){return this.collection?_.map(this.get("embeds")||[],function(a){return this.collection.get(a)},this):[]},clone:function(a){a=a||{};var b=Backbone.Model.prototype.clone.apply(this,arguments);if(b.set("id",joint.util.uuid(),{silent:!0}),b.set("embeds",""),!a.deep)return b;var c=this.getEmbeddedCells(),d=[b],e={};return _.each(c,function(a){var c=a.clone({deep:!0});b.embed(c[0]),_.each(c,function(b){if(d.push(b),!(b instanceof joint.dia.Link)){var c=this.collection.getConnectedLinks(a,{inbound:!0});_.each(c,function(a){var c=e[a.id]||a.clone();e[a.id]=c;var d=_.clone(c.get("target"));d.id=b.id,c.set("target",d)});var f=this.collection.getConnectedLinks(a,{outbound:!0});_.each(f,function(a){var c=e[a.id]||a.clone();e[a.id]=c;var d=_.clone(c.get("source"));d.id=b.id,c.set("source",d)})}},this)},this),d=d.concat(_.values(e))},attr:function(a,b,c){var d=this.get("attrs"),e="/";if(_.isString(a)){if("undefined"!=typeof b){var f={};return joint.util.setByPath(f,a,b,e),this.set("attrs",_.merge({},d,f),c)}return joint.util.getByPath(d,a,e)}return this.set("attrs",_.merge({},d,a),b,c)},removeAttr:function(a,b){if(_.isArray(a))return _.each(a,function(a){this.removeAttr(a,b)},this),this;var c=joint.util.unsetByPath(_.merge({},this.get("attrs")),a,"/");return this.set("attrs",c,_.extend({dirty:!0},b))},transition:function(a,b,c,d){d=d||"/";var e={duration:100,delay:10,timingFunction:joint.util.timing.linear,valueFunction:joint.util.interpolate.number};c=_.extend(e,c);var f,g=a.split(d),h=g[0],i=g.length>1,j=0,k=_.bind(function(b){var e,g,l;if(j=j||b,b-=j,g=b/c.duration,1>g?this._transitionIds[a]=e=joint.util.nextFrame(k):(g=1,delete this._transitionIds[a]),l=f(c.timingFunction(g)),i){var m=joint.util.setByPath({},a,l,d)[h];l=_.merge({},this.get(h),m)}c.transitionId=e,this.set(h,l,c),e||this.trigger("transition:end",this,a)},this),l=_.bind(function(e){this.stopTransitions(a),f=c.valueFunction(joint.util.getByPath(this.attributes,a,d),b),this._transitionIds[a]=joint.util.nextFrame(e),this.trigger("transition:start",this,a)},this);return _.delay(l,c.delay,k)},getTransitions:function(){return _.keys(this._transitionIds)},stopTransitions:function(a,b){b=b||"/";var c=a&&a.split(b);_(this._transitionIds).keys().filter(c&&function(a){return _.isEqual(c,a.split(b).slice(0,c.length))}).each(function(a){joint.util.cancelFrame(this._transitionIds[a]),delete this._transitionIds[a],this.trigger("transition:end",this,a)},this)}}),joint.dia.CellView=Backbone.View.extend({tagName:"g",attributes:function(){return{"model-id":this.model.id}},initialize:function(){_.bindAll(this,"remove","update"),this.$el.data("view",this),this.listenTo(this.model,"remove",this.remove),this.listenTo(this.model,"change:attrs",this.onChangeAttrs)},onChangeAttrs:function(a,b,c){return c.dirty?this.render():this.update()},_configure:function(a){a.id=a.id||joint.util.guid(this),Backbone.View.prototype._configure.apply(this,arguments)},_ensureElement:function(){var a;if(this.el)a=_.result(this,"el");else{var b=_.extend({id:this.id},_.result(this,"attributes"));this.className&&(b["class"]=_.result(this,"className")),a=V(_.result(this,"tagName"),b).node}this.setElement(a,!1)},findBySelector:function(a){var b="."===a?this.$el:this.$el.find(a);return b},notify:function(a){if(this.paper){var b=Array.prototype.slice.call(arguments,1);this.trigger.apply(this,[a].concat(b)),this.paper.trigger.apply(this.paper,[a,this].concat(b))}},getStrokeBBox:function(a){var b=!!a;a=a||this.el;var c,d=V(a).bbox(!1,this.paper.viewport);return c=b?V(a).attr("stroke-width"):this.model.attr("rect/stroke-width")||this.model.attr("circle/stroke-width")||this.model.attr("ellipse/stroke-width")||this.model.attr("path/stroke-width"),c=parseFloat(c)||0,g.rect(d).moveAndExpand({x:-c/2,y:-c/2,width:c,height:c})},getBBox:function(){return V(this.el).bbox()},highlight:function(a){a=a?this.$(a)[0]||this.el:this.el,V(a).addClass("highlighted")},unhighlight:function(a){a=a?this.$(a)[0]||this.el:this.el,V(a).removeClass("highlighted")},findMagnet:function(a){var b=this.$(a);if(0===b.length||b[0]===this.el){var c=this.model.get("attrs")||{};return c["."]&&c["."].magnet===!1?void 0:this.el}return b.attr("magnet")?b[0]:this.findMagnet(b.parent())},applyFilter:function(a,b){var c=this.findBySelector(a),d=b.name+this.paper.svg.id+joint.util.hashCode(JSON.stringify(b));if(!this.paper.svg.getElementById(d)){var e=joint.util.filter[b.name]&&joint.util.filter[b.name](b.args||{});if(!e)throw new Error("Non-existing filter "+b.name);var f=V(e);f.attr("filterUnits","userSpaceOnUse"),b.attrs&&f.attr(b.attrs),f.node.id=d,V(this.paper.svg).defs().append(f)}c.each(function(){V(this).attr("filter","url(#"+d+")")})},applyGradient:function(a,b,c){var d=this.findBySelector(a),e=c.type+this.paper.svg.id+joint.util.hashCode(JSON.stringify(c));if(!this.paper.svg.getElementById(e)){var f=["<"+c.type+">",_.map(c.stops,function(a){return'<stop offset="'+a.offset+'" stop-color="'+a.color+'" stop-opacity="'+(_.isFinite(a.opacity)?a.opacity:1)+'" />'}).join(""),"</"+c.type+">"].join(""),g=V(f);c.attrs&&g.attr(c.attrs),g.node.id=e,V(this.paper.svg).defs().append(g)}d.each(function(){V(this).attr(b,"url(#"+e+")")})},getSelector:function(a,b){if(a===this.el)return b;var c=$(a).index();return b=a.tagName+":nth-child("+(c+1)+")"+" "+(b||""),this.getSelector($(a).parent()[0],b+" ")},pointerdblclick:function(a,b,c){this.notify("cell:pointerdblclick",a,b,c)},pointerclick:function(a,b,c){this.notify("cell:pointerclick",a,b,c)},pointerdown:function(a,b,c){this.model.collection&&(this.model.trigger("batch:start"),this._collection=this.model.collection),this.notify("cell:pointerdown",a,b,c)},pointermove:function(a,b,c){this.notify("cell:pointermove",a,b,c)},pointerup:function(a,b,c){this.notify("cell:pointerup",a,b,c),this._collection&&(this._collection.trigger("batch:stop"),delete this._collection)}}),"object"==typeof exports&&(module.exports.Cell=joint.dia.Cell,module.exports.CellView=joint.dia.CellView),"object"==typeof exports)var joint={util:require("./core").util,dia:{Cell:require("./joint.dia.cell").Cell,CellView:require("./joint.dia.cell").CellView}},Backbone=require("backbone"),_=require("lodash");if(joint.dia.Element=joint.dia.Cell.extend({defaults:{position:{x:0,y:0},size:{width:1,height:1},angle:0},position:function(a,b){this.set("position",{x:a,y:b})},translate:function(a,b,c){if(b=b||0,0===a&&0===b)return this;var d=this.get("position")||{x:0,y:0},e={x:d.x+a||0,y:d.y+b||0};return c&&c.transition?(_.isObject(c.transition)||(c.transition={}),this.transition("position",e,_.extend({},c.transition,{valueFunction:joint.util.interpolate.object}))):(this.set("position",e,c),_.invoke(this.getEmbeddedCells(),"translate",a,b,c)),this},resize:function(a,b){return this.trigger("batch:start"),this.set("size",{width:a,height:b}),this.trigger("batch:stop"),this},rotate:function(a,b){return this.set("angle",b?a:((this.get("angle")||0)+a)%360)},getBBox:function(){var a=this.get("position"),b=this.get("size");return g.rect(a.x,a.y,b.width,b.height)}}),joint.dia.ElementView=joint.dia.CellView.extend({className:function(){return"element "+this.model.get("type").split(".").join(" ")},initialize:function(){_.bindAll(this,"translate","resize","rotate"),joint.dia.CellView.prototype.initialize.apply(this,arguments),this.listenTo(this.model,"change:position",this.translate),this.listenTo(this.model,"change:size",this.resize),this.listenTo(this.model,"change:angle",this.rotate)},update:function(a,b){var c=this.model.get("attrs"),d=V(this.$(".rotatable")[0]);if(d){var e=d.attr("transform");d.attr("transform","")}var f=[];_.each(b||c,function(a,b){var c=this.findBySelector(b);if(0!==c.length){var d=["style","text","html","ref-x","ref-y","ref-dx","ref-dy","ref-width","ref-height","ref","x-alignment","y-alignment","port"];_.isObject(a.filter)&&(d.push("filter"),this.applyFilter(b,a.filter)),_.isObject(a.fill)&&(d.push("fill"),this.applyGradient(b,"fill",a.fill)),_.isObject(a.stroke)&&(d.push("stroke"),this.applyGradient(b,"stroke",a.stroke)),_.isUndefined(a.text)||c.each(function(){V(this).text(a.text+"")});var e=_.omit(a,d);c.each(function(){V(this).attr(e)}),a.port&&c.attr("port",_.isUndefined(a.port.id)?a.port:a.port.id),a.style&&c.css(a.style),_.isUndefined(a.html)||c.each(function(){$(this).html(a.html+"")}),_.isUndefined(a["ref-x"])&&_.isUndefined(a["ref-y"])&&_.isUndefined(a["ref-dx"])&&_.isUndefined(a["ref-dy"])&&_.isUndefined(a["x-alignment"])&&_.isUndefined(a["y-alignment"])&&_.isUndefined(a["ref-width"])&&_.isUndefined(a["ref-height"])||_.each(c,function(a,b,c){var d=$(a);d.selector=c.selector,f.push(d)})}},this);var g=this.el.getBBox();b=b||{},_.each(f,function(a){var d=b[a.selector],e=d?_.merge({},c[a.selector],d):c[a.selector];this.positionRelative(a,g,e)},this),d&&d.attr("transform",e||"")},positionRelative:function(a,b,c){function d(a){return _.isNumber(a)&&!_.isNaN(a)}var e=c.ref,f=parseFloat(c["ref-x"]),g=parseFloat(c["ref-y"]),h=parseFloat(c["ref-dx"]),i=parseFloat(c["ref-dy"]),j=c["y-alignment"],k=c["x-alignment"],l=parseFloat(c["ref-width"]),m=parseFloat(c["ref-height"]),n=_.contains(_.pluck(_.pluck(a.parents("g"),"className"),"baseVal"),"scalable");e&&(b=V(this.findBySelector(e)[0]).bbox(!1,this.el));var o=V(a[0]);o.attr("transform")&&o.attr("transform",o.attr("transform").replace(/translate\([^)]*\)/g,"")||"");var p=0,q=0;if(d(l)&&(l>=0&&1>=l?o.attr("width",l*b.width):o.attr("width",Math.max(l+b.width,0))),d(m)&&(m>=0&&1>=m?o.attr("height",m*b.height):o.attr("height",Math.max(m+b.height,0))),d(h))if(n){var r=V(this.$(".scalable")[0]).scale();p=b.x+b.width+h/r.sx}else p=b.x+b.width+h;if(d(i))if(n){var r=V(this.$(".scalable")[0]).scale();q=b.y+b.height+i/r.sy}else q=b.y+b.height+i;if(d(f))if(f>0&&1>f)p=b.x+b.width*f;else if(n){var r=V(this.$(".scalable")[0]).scale();p=b.x+f/r.sx}else p=b.x+f;if(d(g))if(g>0&&1>g)q=b.y+b.height*g;else if(n){var r=V(this.$(".scalable")[0]).scale();q=b.y+g/r.sy}else q=b.y+g;var s=o.bbox(!1,this.paper.viewport);"middle"===j?q-=s.height/2:d(j)&&(q+=j>-1&&1>j?s.height*j:j),"middle"===k?p-=s.width/2:d(k)&&(p+=k>-1&&1>k?s.width*k:k),o.translate(p,q)},renderMarkup:function(){var a=this.model.markup||this.model.get("markup");if(!a)throw new Error("properties.markup is missing while the default render() implementation is used.");var b=V(a);V(this.el).append(b)},render:function(){return this.$el.empty(),this.renderMarkup(),this.update(),this.resize(),this.rotate(),this.translate(),this},scale:function(a,b){V(this.el).scale(a,b)},resize:function(){var a=this.model.get("size")||{width:1,height:1},b=this.model.get("angle")||0,c=V(this.$(".scalable")[0]);if(c){var d=c.bbox(!0);c.attr("transform","scale("+a.width/d.width+","+a.height/d.height+")");var e=V(this.$(".rotatable")[0]),f=e&&e.attr("transform");if(f&&"null"!==f){e.attr("transform",f+" rotate("+-b+","+a.width/2+","+a.height/2+")");var g=c.bbox(!1,this.paper.viewport);this.model.set("position",{x:g.x,y:g.y}),this.rotate()}this.update()}},translate:function(){var a=this.model.get("position")||{x:0,y:0};V(this.el).attr("transform","translate("+a.x+","+a.y+")")},rotate:function(){var a=V(this.$(".rotatable")[0]);if(a){var b=this.model.get("angle")||0,c=this.model.get("size")||{width:1,height:1},d=c.width/2,e=c.height/2;a.attr("transform","rotate("+b+","+d+","+e+")")}},pointerdown:function(a,b,c){if(a.target.getAttribute("magnet")&&this.paper.options.validateMagnet.call(this.paper,this,a.target)){this.model.trigger("batch:start");var d=this.paper.getDefaultLink(this,a.target);d.set({source:{id:this.model.id,selector:this.getSelector(a.target),port:$(a.target).attr("port")},target:{x:b,y:c}}),this.paper.model.addCell(d),this._linkView=this.paper.findViewByModel(d),this._linkView.startArrowheadMove("target")}else this._dx=b,this._dy=c,joint.dia.CellView.prototype.pointerdown.apply(this,arguments)},pointermove:function(a,b,c){if(this._linkView)this._linkView.pointermove(a,b,c);else{var d=this.paper.options.gridSize;if(this.options.interactive!==!1){var e=this.model.get("position");this.model.translate(g.snapToGrid(e.x,d)-e.x+g.snapToGrid(b-this._dx,d),g.snapToGrid(e.y,d)-e.y+g.snapToGrid(c-this._dy,d))}this._dx=g.snapToGrid(b,d),this._dy=g.snapToGrid(c,d),joint.dia.CellView.prototype.pointermove.apply(this,arguments)}},pointerup:function(a,b,c){this._linkView?(this._linkView.pointerup(a,b,c),delete this._linkView,this.model.trigger("batch:stop")):joint.dia.CellView.prototype.pointerup.apply(this,arguments)}}),"object"==typeof exports&&(module.exports.Element=joint.dia.Element,module.exports.ElementView=joint.dia.ElementView),"object"==typeof exports)var joint={dia:{Cell:require("./joint.dia.cell").Cell,CellView:require("./joint.dia.cell").CellView}},Backbone=require("backbone"),_=require("lodash"),g=require("./geometry");if(joint.dia.Link=joint.dia.Cell.extend({markup:['<path class="connection" stroke="black"/>','<path class="marker-source" fill="black" stroke="black" />','<path class="marker-target" fill="black" stroke="black" />','<path class="connection-wrap"/>','<g class="labels"/>','<g class="marker-vertices"/>','<g class="marker-arrowheads"/>','<g class="link-tools"/>'].join(""),labelMarkup:['<g class="label">',"<rect />","<text />","</g>"].join(""),toolMarkup:['<g class="link-tool">','<g class="tool-remove" event="remove">','<circle r="11" />','<path transform="scale(.8) translate(-16, -16)" d="M24.778,21.419 19.276,15.917 24.777,10.415 21.949,7.585 16.447,13.087 10.945,7.585 8.117,10.415 13.618,15.917 8.116,21.419 10.946,24.248 16.447,18.746 21.948,24.248z"/>',"<title>Remove link.</title>","</g>",'<g class="tool-options" event="link:options">','<circle r="11" transform="translate(25)"/>','<path fill="white" transform="scale(.55) translate(29, -16)" d="M31.229,17.736c0.064-0.571,0.104-1.148,0.104-1.736s-0.04-1.166-0.104-1.737l-4.377-1.557c-0.218-0.716-0.504-1.401-0.851-2.05l1.993-4.192c-0.725-0.91-1.549-1.734-2.458-2.459l-4.193,1.994c-0.647-0.347-1.334-0.632-2.049-0.849l-1.558-4.378C17.165,0.708,16.588,0.667,16,0.667s-1.166,0.041-1.737,0.105L12.707,5.15c-0.716,0.217-1.401,0.502-2.05,0.849L6.464,4.005C5.554,4.73,4.73,5.554,4.005,6.464l1.994,4.192c-0.347,0.648-0.632,1.334-0.849,2.05l-4.378,1.557C0.708,14.834,0.667,15.412,0.667,16s0.041,1.165,0.105,1.736l4.378,1.558c0.217,0.715,0.502,1.401,0.849,2.049l-1.994,4.193c0.725,0.909,1.549,1.733,2.459,2.458l4.192-1.993c0.648,0.347,1.334,0.633,2.05,0.851l1.557,4.377c0.571,0.064,1.148,0.104,1.737,0.104c0.588,0,1.165-0.04,1.736-0.104l1.558-4.377c0.715-0.218,1.399-0.504,2.049-0.851l4.193,1.993c0.909-0.725,1.733-1.549,2.458-2.458l-1.993-4.193c0.347-0.647,0.633-1.334,0.851-2.049L31.229,17.736zM16,20.871c-2.69,0-4.872-2.182-4.872-4.871c0-2.69,2.182-4.872,4.872-4.872c2.689,0,4.871,2.182,4.871,4.872C20.871,18.689,18.689,20.871,16,20.871z"/>',"<title>Link options.</title>","</g>","</g>"].join(""),vertexMarkup:['<g class="marker-vertex-group" transform="translate(<%= x %>, <%= y %>)">','<circle class="marker-vertex" idx="<%= idx %>" r="10" />','<path class="marker-vertex-remove-area" idx="<%= idx %>" d="M16,5.333c-7.732,0-14,4.701-14,10.5c0,1.982,0.741,3.833,2.016,5.414L2,25.667l5.613-1.441c2.339,1.317,5.237,2.107,8.387,2.107c7.732,0,14-4.701,14-10.5C30,10.034,23.732,5.333,16,5.333z" transform="translate(5, -33)"/>','<path class="marker-vertex-remove" idx="<%= idx %>" transform="scale(.8) translate(9.5, -37)" d="M24.778,21.419 19.276,15.917 24.777,10.415 21.949,7.585 16.447,13.087 10.945,7.585 8.117,10.415 13.618,15.917 8.116,21.419 10.946,24.248 16.447,18.746 21.948,24.248z">',"<title>Remove vertex.</title>","</path>","</g>"].join(""),arrowheadMarkup:['<g class="marker-arrowhead-group marker-arrowhead-group-<%= end %>">','<path class="marker-arrowhead" end="<%= end %>" d="M 26 0 L 0 13 L 26 26 z" />',"</g>"].join(""),defaults:{type:"link"},disconnect:function(){return this.set({source:g.point(0,0),target:g.point(0,0)})},label:function(a,b){a=a||0;var c=this.get("labels")||[];if(0===arguments.length||1===arguments.length)return c[a];var d=_.merge({},c[a],b),e=c.slice();return e[a]=d,this.set({labels:e})}}),joint.dia.LinkView=joint.dia.CellView.extend({className:function(){return _.unique(this.model.get("type").split(".").concat("link")).join(" ")},options:{shortLinkLength:100},initialize:function(){joint.dia.CellView.prototype.initialize.apply(this,arguments),"function"!=typeof this.constructor.prototype.watchSource&&(this.constructor.prototype.watchSource=this._createWatcher("source"),this.constructor.prototype.watchTarget=this._createWatcher("target")),this._labelCache={},this._markerCache={},this.startListening()},startListening:function(){this.listenTo(this.model,"change:markup",this.render),this.listenTo(this.model,"change:smooth change:manhattan change:router change:connector",this.update),this.listenTo(this.model,"change:toolMarkup",function(){this.renderTools().updateToolsPosition()}),this.listenTo(this.model,"change:labels change:labelMarkup",function(){this.renderLabels().updateLabelPositions()}),this.listenTo(this.model,"change:vertices change:vertexMarkup",function(){this.renderVertexMarkers().update()}),this.listenTo(this.model,"change:source",function(a,b){this.watchSource(a,b).update()}),this.listenTo(this.model,"change:target",function(a,b){this.watchTarget(a,b).update()})},render:function(){this.$el.empty();var a=V(this.model.get("markup")||this.model.markup);if(_.isArray(a)||(a=[a]),this._V={},_.each(a,function(a){var b=a.attr("class");b&&(this._V[$.camelCase(b)]=a)},this),!this._V.connection)throw new Error("link: no connection path in the markup");return this.renderTools(),this.renderVertexMarkers(),this.renderArrowheadMarkers(),V(this.el).append(a),this.renderLabels(),this.watchSource(this.model,this.model.get("source")).watchTarget(this.model,this.model.get("target")).update(),this},renderLabels:function(){if(!this._V.labels)return this;this._labelCache={};var a=$(this._V.labels.node).empty(),b=this.model.get("labels")||[];if(!b.length)return this;var c=_.template(this.model.get("labelMarkup")||this.model.labelMarkup),d=V(c());return _.each(b,function(b,c){var e=d.clone().node;this._labelCache[c]=V(e);var f=$(e).find("text"),g=$(e).find("rect"),h=_.extend({"text-anchor":"middle","font-size":14},joint.util.getByPath(b,"attrs/text","/"));f.attr(_.omit(h,"text")),_.isUndefined(h.text)||V(f[0]).text(h.text+""),a.append(e);var i=V(f[0]).bbox(!0,a[0]);V(f[0]).translate(0,-i.height/2);var j=_.extend({fill:"white",rx:3,ry:3},joint.util.getByPath(b,"attrs/rect","/"));g.attr(_.extend(j,{x:i.x,y:i.y-i.height/2,width:i.width,height:i.height}))},this),this},renderTools:function(){if(!this._V.linkTools)return this;var a=$(this._V.linkTools.node).empty(),b=_.template(this.model.get("toolMarkup")||this.model.toolMarkup),c=V(b());return a.append(c.node),this._toolCache=c,this},renderVertexMarkers:function(){if(!this._V.markerVertices)return this;var a=$(this._V.markerVertices.node).empty(),b=_.template(this.model.get("vertexMarkup")||this.model.vertexMarkup);return _.each(this.model.get("vertices"),function(c,d){a.append(V(b(_.extend({idx:d},c))).node)}),this},renderArrowheadMarkers:function(){if(!this._V.markerArrowheads)return this;var a=$(this._V.markerArrowheads.node);a.empty();var b=_.template(this.model.get("arrowheadMarkup")||this.model.arrowheadMarkup);return this._V.sourceArrowhead=V(b({end:"source"})),this._V.targetArrowhead=V(b({end:"target"})),a.append(this._V.sourceArrowhead.node,this._V.targetArrowhead.node),this},update:function(){_.each(this.model.get("attrs"),function(a,b){_.isObject(a.filter)?(this.findBySelector(b).attr(_.omit(a,"filter")),this.applyFilter(b,a.filter)):this.findBySelector(b).attr(a)},this);var a=this.route=this.findRoute(this.model.get("vertices")||[]);this._findConnectionPoints(a);var b=this.getPathData(a);return this._V.connection.attr("d",b),this._V.connectionWrap&&this._V.connectionWrap.attr("d",b),this._translateAndAutoOrientArrows(this._V.markerSource,this._V.markerTarget),this.updateLabelPositions(),this.updateToolsPosition(),this.updateArrowheadMarkers(),delete this.options.perpendicular,this},_findConnectionPoints:function(a){var b,c,d,e,f=_.first(a);b=this.getConnectionPoint("source",this.model.get("source"),f||this.model.get("target")).round();var h=_.last(a);c=this.getConnectionPoint("target",this.model.get("target"),h||b).round();var i=this._markerCache;this._V.markerSource&&(i.sourceBBox=i.sourceBBox||this._V.markerSource.bbox(!0),d=g.point(b).move(f||c,-1*i.sourceBBox.width*this._V.markerSource.scale().sx).round()),this._V.markerTarget&&(i.targetBBox=i.targetBBox||this._V.markerTarget.bbox(!0),e=g.point(c).move(h||b,-1*i.targetBBox.width*this._V.markerTarget.scale().sx).round()),i.sourcePoint=d||b,i.targetPoint=e||c,this.sourcePoint=b,this.targetPoint=c},updateLabelPositions:function(){if(!this._V.labels)return this;var a=this.model.get("labels")||[];if(!a.length)return this;var b=this._V.connection.node,c=b.getTotalLength();return _.each(a,function(a,d){var e=a.position;e=e>c?c:e,e=0>e?c+e:e,e=e>1?e:c*e;var f=b.getPointAtLength(e);this._labelCache[d].attr("transform","translate("+f.x+", "+f.y+")")},this),this},updateToolsPosition:function(){if(!this._V.linkTools)return this;var a="",b=40;this.getConnectionLength()<this.options.shortLinkLength&&(a="scale(.5)",b/=2);var c=this.getPointAtLength(b);return this._toolCache.attr("transform","translate("+c.x+", "+c.y+") "+a),this},updateArrowheadMarkers:function(){if(!this._V.markerArrowheads)return this;if("none"===$.css(this._V.markerArrowheads.node,"display"))return this;var a=this.getConnectionLength()<this.options.shortLinkLength?.5:1;return this._V.sourceArrowhead.scale(a),this._V.targetArrowhead.scale(a),this._translateAndAutoOrientArrows(this._V.sourceArrowhead,this._V.targetArrowhead),this},_createWatcher:function(a){function b(b,c){c=c||{};var d=b.previous(a)||{},e=this["_"+a+"BBoxUpdate"];return this._isModel(d)&&this.stopListening(this.paper.getModelById(d.id),"change",e),this._isModel(c)&&this.listenTo(this.paper.getModelById(c.id),"change",e),_.bind(e,this)({cacheOnly:!0}),this}return b},_sourceBBoxUpdate:function(a){this.lastEndChange="source",a=a||{};var b=this.model.get("source");if(this._isModel(b)){var c=this._makeSelector(b),d=this.paper.findViewByModel(b.id),e=this.paper.viewport.querySelector(c);this.sourceBBox=d.getStrokeBBox(e)}else this.sourceBBox=g.rect(b.x,b.y,1,1);a.cacheOnly||this.update()},_targetBBoxUpdate:function(a){this.lastEndChange="target",a=a||{};var b=this.model.get("target");if(this._isModel(b)){var c=this._makeSelector(b),d=this.paper.findViewByModel(b.id),e=this.paper.viewport.querySelector(c);this.targetBBox=d.getStrokeBBox(e)}else this.targetBBox=g.rect(b.x,b.y,1,1);a.cacheOnly||this.update()},_translateAndAutoOrientArrows:function(a,b){a&&a.translateAndAutoOrient(this.sourcePoint,_.first(this.route)||this.targetPoint,this.paper.viewport),b&&b.translateAndAutoOrient(this.targetPoint,_.last(this.route)||this.sourcePoint,this.paper.viewport)},removeVertex:function(a){var b=_.clone(this.model.get("vertices"));return b&&b.length&&(b.splice(a,1),this.model.set("vertices",b)),this},addVertex:function(a){this.model.set("attrs",this.model.get("attrs")||{}),this.model.get("attrs");for(var b,c=(this.model.get("vertices")||[]).slice(),d=c.slice(),e=this._V.connection.node.cloneNode(!1),f=e.getTotalLength(),g=20,h=c.length+1;h--&&(c.splice(h,0,a),V(e).attr("d",this.getPathData(this.findRoute(c))),b=e.getTotalLength(),b-f>g);)c=d.slice();return this.model.set("vertices",c),Math.max(h,0)},findRoute:function(a){var b=this.model.get("router");if(!b){if(!this.model.get("manhattan"))return a;b={name:"orthogonal"}}var c=joint.routers[b.name];if(!_.isFunction(c))throw"unknown router: "+b.name;var d=c.call(this,a||[],b.args||{},this);return d},getPathData:function(a){var b=this.model.get("connector");if(b||(b=this.model.get("smooth")?{name:"smooth"}:{name:"normal"}),!_.isFunction(joint.connectors[b.name]))throw"unknown connector: "+b.name;var c=joint.connectors[b.name].call(this,this._markerCache.sourcePoint,this._markerCache.targetPoint,a||this.model.get("vertices")||{},b.args||{},this);return c},getConnectionPoint:function(a,b,c){var d;if(this._isPoint(b))d=g.point(b);else{var e,f="source"===a?this.sourceBBox:this.targetBBox;if(this._isPoint(c))e=g.point(c);else{var h="source"===a?this.targetBBox:this.sourceBBox;e=g.rect(h).intersectionWithLineFromCenterToPoint(g.rect(f).center()),e=e||g.rect(h).center()}if(this.paper.options.perpendicularLinks||this.options.perpendicular){var i,j=g.rect(0,e.y,this.paper.options.width,1),k=g.rect(e.x,0,1,this.paper.options.height);if(j.intersect(g.rect(f)))switch(i=g.rect(f).sideNearestToPoint(e)){case"left":d=g.point(f.x,e.y);break;case"right":d=g.point(f.x+f.width,e.y);break;default:d=g.rect(f).center()}else if(k.intersect(g.rect(f)))switch(i=g.rect(f).sideNearestToPoint(e)){case"top":d=g.point(e.x,f.y);break;case"bottom":d=g.point(e.x,f.y+f.height);break;default:d=g.rect(f).center()}else d=g.rect(f).intersectionWithLineFromCenterToPoint(e),d=d||g.rect(f).center()}else d=g.rect(f).intersectionWithLineFromCenterToPoint(e),d=d||g.rect(f).center()}return d},_isModel:function(a){return a&&a.id},_isPoint:function(a){return!this._isModel(a)},_makeSelector:function(a){var b='[model-id="'+a.id+'"]';return a.port?b+=' [port="'+a.port+'"]':a.selector&&(b+=" "+a.selector),b},getConnectionLength:function(){return this._V.connection.node.getTotalLength()},getPointAtLength:function(a){return this._V.connection.node.getPointAtLength(a)},_beforeArrowheadMove:function(){this.model.trigger("batch:start"),this._z=this.model.get("z"),this.model.set("z",Number.MAX_VALUE),this.el.style.pointerEvents="none"},_afterArrowheadMove:function(){this._z&&(this.model.set("z",this._z),delete this._z),this.el.style.pointerEvents="visiblePainted",this.model.trigger("batch:stop")},_createValidateConnectionArgs:function(a){function b(a,b){return c[f]=a,c[f+1]=a.el===b?void 0:b,c}var c=[];c[4]=a,c[5]=this;var d,e=0,f=0;"source"===a?(e=2,d="target"):(f=2,d="source");var g=this.model.get(d);return g.id&&(c[e]=this.paper.findViewByModel(g.id),c[e+1]=g.selector&&c[e].el.querySelector(g.selector)),b},startArrowheadMove:function(a){this._action="arrowhead-move",this._arrowhead=a,this._beforeArrowheadMove(),this._validateConnectionArgs=this._createValidateConnectionArgs(this._arrowhead)},pointerdown:function(a,b,c){if(joint.dia.CellView.prototype.pointerdown.apply(this,arguments),this._dx=b,this._dy=c,this.options.interactive!==!1){var d=a.target.getAttribute("class");switch(d){case"marker-vertex":this._action="vertex-move",this._vertexIdx=a.target.getAttribute("idx");break;case"marker-vertex-remove":case"marker-vertex-remove-area":this.removeVertex(a.target.getAttribute("idx"));break;case"marker-arrowhead":this.startArrowheadMove(a.target.getAttribute("end"));break;default:var e=a.target.parentNode.getAttribute("event");e?"remove"===e?this.model.remove():this.paper.trigger(e,a,this,b,c):(this._vertexIdx=this.addVertex({x:b,y:c}),this._action="vertex-move")}}},pointermove:function(a,b,c){switch(joint.dia.CellView.prototype.pointermove.apply(this,arguments),this._action){case"vertex-move":var d=_.clone(this.model.get("vertices"));d[this._vertexIdx]={x:b,y:c},this.model.set("vertices",d);break;case"arrowhead-move":if(this.paper.options.snapLinks){var e=this.paper.options.snapLinks.radius||50,f=this.paper.findViewsInArea({x:b-e,y:c-e,width:2*e,height:2*e});this._closestView&&this._closestView.unhighlight(this._closestEnd.selector),this._closestView=this._closestEnd=null;var h,i=g.point(b,c),j=Number.MAX_VALUE;_.each(f,function(a){"false"!==a.el.getAttribute("magnet")&&(h=a.model.getBBox().center().distance(i),e>h&&j>h&&this.paper.options.validateConnection.apply(this.paper,this._validateConnectionArgs(a,null))&&(j=h,this._closestView=a,this._closestEnd={id:a.model.id})),a.$("[magnet]").each(_.bind(function(b,c){var d=V(c).bbox(!1,this.paper.viewport);h=i.distance({x:d.x+d.width/2,y:d.y+d.height/2}),e>h&&j>h&&this.paper.options.validateConnection.apply(this.paper,this._validateConnectionArgs(a,c))&&(j=h,this._closestView=a,this._closestEnd={id:a.model.id,selector:a.getSelector(c),port:c.getAttribute("port")})},this))},this),this._closestView&&this._closestView.highlight(this._closestEnd.selector),this.model.set(this._arrowhead,this._closestEnd||{x:b,y:c})}else{var k="mousemove"===a.type?a.target:document.elementFromPoint(a.clientX,a.clientY);this._targetEvent!==k&&(this._magnetUnderPointer&&this._viewUnderPointer.unhighlight(this._magnetUnderPointer),this._viewUnderPointer=this.paper.findView(k),this._viewUnderPointer?(this._magnetUnderPointer=this._viewUnderPointer.findMagnet(k),this._magnetUnderPointer&&this.paper.options.validateConnection.apply(this.paper,this._validateConnectionArgs(this._viewUnderPointer,this._magnetUnderPointer))?this._magnetUnderPointer&&this._viewUnderPointer.highlight(this._magnetUnderPointer):this._magnetUnderPointer=null):this._magnetUnderPointer=null),this._targetEvent=k,this.model.set(this._arrowhead,{x:b,y:c})}}this._dx=b,this._dy=c},pointerup:function(){joint.dia.CellView.prototype.pointerup.apply(this,arguments),"arrowhead-move"===this._action&&(this.paper.options.snapLinks?(this._closestView&&this._closestView.unhighlight(this._closestEnd.selector),this._closestView=this._closestEnd=null):(this._magnetUnderPointer&&(this._viewUnderPointer.unhighlight(this._magnetUnderPointer),this.model.set(this._arrowhead,{id:this._viewUnderPointer.model.id,selector:this._viewUnderPointer.getSelector(this._magnetUnderPointer),port:$(this._magnetUnderPointer).attr("port")})),delete this._viewUnderPointer,delete this._magnetUnderPointer,delete this._staticView,delete this._staticMagnet),this._afterArrowheadMove()),delete this._action}}),"object"==typeof exports&&(module.exports.Link=joint.dia.Link,module.exports.LinkView=joint.dia.LinkView),joint.dia.Paper=Backbone.View.extend({options:{width:800,height:600,gridSize:50,perpendicularLinks:!1,elementView:joint.dia.ElementView,linkView:joint.dia.LinkView,snapLinks:!1,defaultLink:new joint.dia.Link,validateMagnet:function(a,b){return"passive"!==b.getAttribute("magnet")},validateConnection:function(a,b,c,d,e){return("target"===e?c:a)instanceof joint.dia.ElementView}},events:{mousedown:"pointerdown",dblclick:"mousedblclick",click:"mouseclick",touchstart:"pointerdown",mousemove:"pointermove",touchmove:"pointermove"},initialize:function(){_.bindAll(this,"addCell","sortCells","resetCells","pointerup"),this.svg=V("svg").node,this.viewport=V("g").node,V(this.svg).append(V("defs").node),V(this.viewport).attr({"class":"viewport"}),V(this.svg).append(this.viewport),this.$el.append(this.svg),this.setDimensions(),this.listenTo(this.model,"add",this.addCell),this.listenTo(this.model,"reset",this.resetCells),this.listenTo(this.model,"sort",this.sortCells),$(document).on("mouseup touchend",this.pointerup),this._mousemoved=!1},remove:function(){$(document).off("mouseup touchend",this.pointerup),Backbone.View.prototype.remove.call(this)
},setDimensions:function(a,b){a&&(this.options.width=a),b&&(this.options.height=b),V(this.svg).attr("width",this.options.width),V(this.svg).attr("height",this.options.height),this.trigger("resize")},fitToContent:function(a,b,c){a=a||1,b=b||1,c=c||0;var d=V(this.viewport).bbox(!0,this.svg),e=Math.ceil((d.width+d.x)/a)*a,f=Math.ceil((d.height+d.y)/b)*b;e+=c,f+=c,(e!=this.options.width||f!=this.options.height)&&this.setDimensions(e||this.options.width,f||this.options.height)},getContentBBox:function(){var a=this.viewport.getBoundingClientRect(),b=this.viewport.getScreenCTM(),c=g.rect(Math.abs(a.left-b.e),Math.abs(a.top-b.f),a.width,a.height);return c},createViewForModel:function(a){var b,c=a.get("type"),d=c.split(".")[0],e=c.split(".")[1];return b=joint.shapes[d]&&joint.shapes[d][e+"View"]?new joint.shapes[d][e+"View"]({model:a,interactive:this.options.interactive}):a instanceof joint.dia.Element?new this.options.elementView({model:a,interactive:this.options.interactive}):new this.options.linkView({model:a,interactive:this.options.interactive})},addCell:function(a){var b=this.createViewForModel(a);V(this.viewport).append(b.el),b.paper=this,b.render(),$(b.el).find("image").on("dragstart",function(){return!1})},resetCells:function(a){$(this.viewport).empty();var b=a.models.slice();b.sort(function(a){return a instanceof joint.dia.Link?1:-1}),_.each(b,this.addCell,this),this.sortCells()},sortCells:function(){var a=$(this.viewport).children("[model-id]"),b=this.model.get("cells");this.sortElements(a,function(a,c){var d=b.get($(a).attr("model-id")),e=b.get($(c).attr("model-id"));return(d.get("z")||0)>(e.get("z")||0)?1:-1})},sortElements:function(a,b){var c=$(a),d=c.map(function(){var a=this,b=a.parentNode,c=b.insertBefore(document.createTextNode(""),a.nextSibling);return function(){if(b===this)throw new Error("You can't sort elements if any one is a descendant of another.");b.insertBefore(this,c),b.removeChild(c)}});return Array.prototype.sort.call(c,b).each(function(a){d[a].call(this)})},scale:function(a,b,c,d){return c||(c=0,d=0),V(this.viewport).attr("transform",""),(c||d)&&V(this.viewport).translate(-c*(a-1),-d*(b-1)),V(this.viewport).scale(a,b),this.trigger("scale",c,d),this},rotate:function(a,b,c){if(_.isUndefined(b)){var d=this.viewport.getBBox();b=d.width/2,c=d.height/2}V(this.viewport).rotate(a,b,c)},findView:function(a){var b=this.$(a);return 0===b.length||b[0]===this.el?void 0:b.data("view")?b.data("view"):this.findView(b.parent())},findViewByModel:function(a){var b=_.isString(a)?a:a.id,c=this.$('[model-id="'+b+'"]');return c.length?c.data("view"):void 0},findViewsFromPoint:function(a){a=g.point(a);var b=_.map(this.model.getElements(),this.findViewByModel);return _.filter(b,function(b){return g.rect(V(b.el).bbox(!1,this.viewport)).containsPoint(a)},this)},findViewsInArea:function(a){a=g.rect(a);var b=_.map(this.model.getElements(),this.findViewByModel);return _.filter(b,function(b){return a.intersect(g.rect(V(b.el).bbox(!1,this.viewport)))},this)},getModelById:function(a){return this.model.getCell(a)},snapToGrid:function(a){var b=V(this.viewport).toLocalPoint(a.x,a.y);return{x:g.snapToGrid(b.x,this.options.gridSize),y:g.snapToGrid(b.y,this.options.gridSize)}},getDefaultLink:function(a,b){return _.isFunction(this.options.defaultLink)?this.options.defaultLink.call(this,a,b):this.options.defaultLink.clone()},mousedblclick:function(a){a.preventDefault(),a=joint.util.normalizeEvent(a);var b=this.findView(a.target),c=this.snapToGrid({x:a.clientX,y:a.clientY});b?b.pointerdblclick(a,c.x,c.y):this.trigger("blank:pointerdblclick",a,c.x,c.y)},mouseclick:function(a){if(!this._mousemoved){a.preventDefault(),a=joint.util.normalizeEvent(a);var b=this.findView(a.target),c=this.snapToGrid({x:a.clientX,y:a.clientY});b?b.pointerclick(a,c.x,c.y):this.trigger("blank:pointerclick",a,c.x,c.y)}this._mousemoved=!1},pointerdown:function(a){a.preventDefault(),a=joint.util.normalizeEvent(a);var b=this.findView(a.target),c=this.snapToGrid({x:a.clientX,y:a.clientY});b?(this.sourceView=b,b.pointerdown(a,c.x,c.y)):this.trigger("blank:pointerdown",a,c.x,c.y)},pointermove:function(a){if(a.preventDefault(),a=joint.util.normalizeEvent(a),this.sourceView){this._mousemoved=!0;var b=this.snapToGrid({x:a.clientX,y:a.clientY});this.sourceView.pointermove(a,b.x,b.y)}},pointerup:function(a){a=joint.util.normalizeEvent(a);var b=this.snapToGrid({x:a.clientX,y:a.clientY});this.sourceView?(this.sourceView.pointerup(a,b.x,b.y),this.sourceView=null):this.trigger("blank:pointerup",a,b.x,b.y)}}),"object"==typeof exports)var joint={util:require("../src/core").util,shapes:{},dia:{Element:require("../src/joint.dia.element").Element,ElementView:require("../src/joint.dia.element").ElementView}},_=require("lodash");joint.shapes.basic={},joint.shapes.basic.Generic=joint.dia.Element.extend({defaults:joint.util.deepSupplement({type:"basic.Generic",attrs:{".":{fill:"#FFFFFF",stroke:"none"}}},joint.dia.Element.prototype.defaults)}),joint.shapes.basic.Rect=joint.shapes.basic.Generic.extend({markup:'<g class="rotatable"><g class="scalable"><rect/></g><text/></g>',defaults:joint.util.deepSupplement({type:"basic.Rect",attrs:{rect:{fill:"#FFFFFF",stroke:"black",width:100,height:60},text:{"font-size":14,text:"","ref-x":.5,"ref-y":.5,ref:"rect","y-alignment":"middle","x-alignment":"middle",fill:"black","font-family":"Arial, helvetica, sans-serif"}}},joint.shapes.basic.Generic.prototype.defaults)}),joint.shapes.basic.Text=joint.shapes.basic.Generic.extend({markup:'<g class="rotatable"><g class="scalable"><text/></g></g>',defaults:joint.util.deepSupplement({type:"basic.Text",attrs:{text:{"font-size":18,fill:"black"}}},joint.shapes.basic.Generic.prototype.defaults)}),joint.shapes.basic.Circle=joint.shapes.basic.Generic.extend({markup:'<g class="rotatable"><g class="scalable"><circle/></g><text/></g>',defaults:joint.util.deepSupplement({type:"basic.Circle",size:{width:60,height:60},attrs:{circle:{fill:"#FFFFFF",stroke:"black",r:30,transform:"translate(30, 30)"},text:{"font-size":14,text:"","text-anchor":"middle","ref-x":.5,"ref-y":.5,ref:"circle","y-alignment":"middle",fill:"black","font-family":"Arial, helvetica, sans-serif"}}},joint.shapes.basic.Generic.prototype.defaults)}),joint.shapes.basic.Image=joint.shapes.basic.Generic.extend({markup:'<g class="rotatable"><g class="scalable"><image/></g><text/></g>',defaults:joint.util.deepSupplement({type:"basic.Image",attrs:{text:{"font-size":14,text:"","text-anchor":"middle","ref-x":.5,"ref-dy":20,ref:"image","y-alignment":"middle",fill:"black","font-family":"Arial, helvetica, sans-serif"}}},joint.shapes.basic.Generic.prototype.defaults)}),joint.shapes.basic.Path=joint.shapes.basic.Generic.extend({markup:'<g class="rotatable"><g class="scalable"><path/></g><text/></g>',defaults:joint.util.deepSupplement({type:"basic.Path",size:{width:60,height:60},attrs:{path:{fill:"#FFFFFF",stroke:"black"},text:{"font-size":14,text:"","text-anchor":"middle","ref-x":.5,"ref-dy":20,ref:"path","y-alignment":"middle",fill:"black","font-family":"Arial, helvetica, sans-serif"}}},joint.shapes.basic.Generic.prototype.defaults)}),joint.shapes.basic.PortsModelInterface={initialize:function(){this.updatePortsAttrs(),this.on("change:inPorts change:outPorts",this.updatePortsAttrs,this),this.constructor.__super__.constructor.__super__.initialize.apply(this,arguments)},updatePortsAttrs:function(){var a=this.get("attrs");_.each(this._portSelectors,function(b){a[b]&&delete a[b]}),this._portSelectors=[];var b={};_.each(this.get("inPorts"),function(a,c,d){var e=this.getPortAttrs(a,c,d.length,".inPorts","in");this._portSelectors=this._portSelectors.concat(_.keys(e)),_.extend(b,e)},this),_.each(this.get("outPorts"),function(a,c,d){var e=this.getPortAttrs(a,c,d.length,".outPorts","out");this._portSelectors=this._portSelectors.concat(_.keys(e)),_.extend(b,e)},this),this.attr(b,{silent:!0}),this.processPorts(),this.trigger("process:ports")},getPortSelector:function(a){var b=".inPorts",c=this.get("inPorts").indexOf(a);if(0>c&&(b=".outPorts",c=this.get("outPorts").indexOf(a),0>c))throw new Error("getPortSelector(): Port doesn't exist.");return b+">g:nth-child("+(c+1)+")>circle"}},joint.shapes.basic.PortsViewInterface={initialize:function(){this.listenTo(this.model,"process:ports",this.update),joint.dia.ElementView.prototype.initialize.apply(this,arguments)},update:function(){this.renderPorts(),joint.dia.ElementView.prototype.update.apply(this,arguments)},renderPorts:function(){var a=this.$(".inPorts").empty(),b=this.$(".outPorts").empty(),c=_.template(this.model.portMarkup);_.each(_.filter(this.model.ports,function(a){return"in"===a.type}),function(b,d){a.append(V(c({id:d,port:b})).node)}),_.each(_.filter(this.model.ports,function(a){return"out"===a.type}),function(a,d){b.append(V(c({id:d,port:a})).node)})}},joint.shapes.basic.TextBlock=joint.shapes.basic.Generic.extend({markup:['<g class="rotatable"><g class="scalable"><rect/></g><switch>','<foreignObject requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" class="fobj">','<body xmlns="http://www.w3.org/1999/xhtml"><div/></body>',"</foreignObject>",'<text class="content"/>',"</switch></g>"].join(""),defaults:joint.util.deepSupplement({type:"basic.TextBlock",attrs:{rect:{fill:"#ffffff",stroke:"#000000",width:80,height:100},text:{fill:"#000000","font-size":14,"font-family":"Arial, helvetica, sans-serif"},".content":{text:"",ref:"rect","ref-x":.5,"ref-y":.5,"y-alignment":"middle","x-alignment":"middle"}},content:""},joint.shapes.basic.Generic.prototype.defaults),initialize:function(){"undefined"!=typeof SVGForeignObjectElement&&(this.setForeignObjectSize(this,this.get("size")),this.setDivContent(this,this.get("content")),this.listenTo(this,"change:size",this.setForeignObjectSize),this.listenTo(this,"change:content",this.setDivContent)),joint.shapes.basic.Generic.prototype.initialize.apply(this,arguments)},setForeignObjectSize:function(a,b){a.attr({".fobj":_.clone(b),div:{style:_.clone(b)}})},setDivContent:function(a,b){a.attr({div:{html:b}})}}),joint.shapes.basic.TextBlockView=joint.dia.ElementView.extend({initialize:function(){joint.dia.ElementView.prototype.initialize.apply(this,arguments),"undefined"==typeof SVGForeignObjectElement&&(this.noSVGForeignObjectElement=!0,this.listenTo(this.model,"change:content",function(a){this.updateContent(a)}))},update:function(a,b){if(this.noSVGForeignObjectElement){var c=this.model,d=_.omit(b||c.get("attrs"),".content");joint.dia.ElementView.prototype.update.call(this,c,d),(!b||_.has(b,".content"))&&this.updateContent(c,b)}else joint.dia.ElementView.prototype.update.call(this,c,b)},updateContent:function(a,b){var c=_.merge({},(b||a.get("attrs"))[".content"]);delete c.text;var d=joint.util.breakText(a.get("content"),a.get("size"),c,{svgDocument:this.paper.svg}),e=joint.util.setByPath({},".content",c,"/");e[".content"].text=d,joint.dia.ElementView.prototype.update.call(this,a,e)}}),"object"==typeof exports&&(module.exports=joint.shapes.basic),joint.routers.orthogonal=function(){function a(a,b){return a.y<b.y&&a.x===b.x?"down":a.y>b.y&&a.x===b.x?"up":a.x<b.x&&a.y===b.y?"right":"left"}function b(a,b,c){var d;if(d=a.x<b.x?a.y>b.y?["up","right"]:a.y<b.y?["down","right"]:["right"]:a.x>b.x?a.y>b.y?["up","left"]:a.y<b.y?["down","left"]:["left"]:a.y>b.y?["up"]:["down"],_.contains(d,c))return c;var e=_.first(d);switch(c){case"down":if("up"===e)return _.last(d);break;case"up":if("down"===e)return _.last(d);break;case"left":if("right"===e)return _.last(d);break;case"right":if("left"===e)return _.last(d)}return e}function c(a,c,d){var e=b(a,c,d);return"down"===e||"up"===e?{x:a.x,y:c.y,d:e}:{x:c.x,y:a.y,d:e}}function d(b){b=(b||[]).slice();var d=[],h=e.center(),i=f.center();b.length||(Math.abs(h.x-i.x)<e.width/2||Math.abs(h.y-i.y)<e.height/2)&&(b=[{x:Math.min(h.x,i.x)+Math.abs(h.x-i.x)/2,y:Math.min(h.y,i.y)+Math.abs(h.y-i.y)/2}]),b.unshift(h),b.push(i);for(var j,k,l,m,n=0;n<b.length-1;n++){l=b[n],m=b[n+1],k=_.last(d),n>0&&(j=l,j.d=k?a(k,l):"top",d.push(j),k=j);var o=k&&k.d;j=c(l,m,o),g.point(j).equals(g.point(l))||g.point(j).equals(g.point(m))||d.push(j)}return d}var e,f;return function(a){return e=this.sourceBBox,f=this.targetBBox,d(a)}}(),joint.routers.manhattan=function(){"use strict";function a(a,b){for(var c,d=[],e={x:0,y:0},f=b;c=a[f];){var g=c.difference(f);g.equals(e)||(d.unshift(f),e=g),f=c}return d.unshift(f),d}function b(a,b,c){var d=c.step,e=a.center(),f=_.chain(c.directionMap).pick(b).map(function(b){var c=b.x*a.width/2,f=b.y*a.height/2,h=g.point(e).offset(c,f).snapToGrid(d);return a.containsPoint(h)&&h.offset(b.x*d,b.y*d),h}).value();return f}function c(a,b,c){var d=360/c,e=Math.floor(a.theta(b)/d);return c-e}function d(d,e,f,h){var i=h.reversed?h.endDirections:h.startDirections,j=h.reversed?h.startDirections:h.endDirections,k=d instanceof g.rect?b(d,i,h):[d],l=e instanceof g.rect?b(e,j,h):[e],m=k.length>1?d.center():k[0],n=l.length>1?e.center():l[0],o=_.filter(l,function(a){var b=g.point(a).snapToGrid(h.mapGridSize).toString(),c=_.every(f[b],function(b){return!b.containsPoint(a)});return c});if(o.length)for(var p=h.step,q=h.penalties,r=_.chain(o).invoke("snapToGrid",p).min(function(a){return h.estimateCost(m,a)}).value(),s={},t={},u={},v=h.directions,w=v.length,x=w/2,y=h.previousDirIndexes||{},z={},A={},B=_.chain(k).invoke("snapToGrid",p).each(function(a){var b=a.toString();t[b]=0,u[b]=h.estimateCost(a,r),y[b]=y[b]||c(m,a,w),A[b]=!0}).map(function(a){return a.toString()}).sortBy(function(a){return u[a]}).value(),C=h.maximumLoops,D=h.maxAllowedDirectionChange;B.length&&C--;){var E=B[0],F=g.point(E);if(r.equals(F))return h.previousDirIndexes=_.pick(y,E),a(s,F);B.splice(0,1),A[M]=null,z[M]=!0;for(var G=y[E],H=t[E],I=0;w>I;I++){var J=Math.abs(I-G);if(J>x&&(J=w-J),!(J>D)){var K=v[I],L=g.point(F).offset(K.offsetX,K.offsetY),M=L.toString();if(!z[M]){var N=g.point(L).snapToGrid(h.mapGridSize).toString(),O=_.every(f[N],function(a){return!a.containsPoint(L)});if(O){var P=_.has(A,M),Q=H+K.cost;if((!P||Q<t[M])&&(s[M]=F,y[M]=I,t[M]=Q,u[M]=Q+h.estimateCost(L,r)+q[J],!P)){var R=_.sortedIndex(B,M,function(a){return u[a]});B.splice(R,0,M),A[M]=!0}}}}}}return h.fallbackRoute(m,n,h)}function e(a,b){b.directions=_.result(b,"directions"),b.penalties=_.result(b,"penalties"),b.paddingBox=_.result(b,"paddingBox"),this.options.perpendicular=!!b.perpendicular;var c=b.reversed="source"===this.lastEndChange,e=c?g.rect(this.targetBBox):g.rect(this.sourceBBox),f=c?g.rect(this.sourceBBox):g.rect(this.targetBBox);e.moveAndExpand(b.paddingBox),f.moveAndExpand(b.paddingBox);for(var h=this.model,i=this.paper.model,j=_.chain(b.excludeEnds).map(h.get,h).pluck("id").map(i.getCell,i).value(),k=b.mapGridSize,l=_.chain(i.getElements()).difference(j).reject(function(a){return _.contains(b.excludeTypes,a.get("type"))}).invoke("getBBox").invoke("moveAndExpand",b.paddingBox).foldl(function(a,b){for(var c=b.origin().snapToGrid(k),d=b.corner().snapToGrid(k),e=c.x;e<=d.x;e+=k)for(var f=c.y;f<=d.y;f+=k){var g=e+"@"+f;a[g]=a[g]||[],a[g].push(b)}return a},{}).value(),m=[],n=_.map(a,g.point),o=e.center(),p=0,q=n.length;q>=p;p++){var r=null,s=t||e,t=n[p];if(!t){t=f;var u=!this.model.get("source").id||!this.model.get("target").id;if(u&&_.isFunction(b.draggingRoute)){var v=s instanceof g.rect?s.center():s;r=b.draggingRoute(v,t.origin(),b)}}r=r||d(s,t,l,b);var w=_.first(r);w&&w.equals(o)&&r.shift(),o=_.last(r)||o,m=m.concat(r)}return c?m.reverse():m}var f={step:10,perpendicular:!0,mapGridSize:100,excludeEnds:[],excludeTypes:["basic.Text"],maximumLoops:500,startDirections:["left","right","top","bottom"],endDirections:["left","right","top","bottom"],directionMap:{right:{x:1,y:0},bottom:{x:0,y:1},left:{x:-1,y:0},top:{x:0,y:-1}},maxAllowedDirectionChange:1,paddingBox:function(){var a=this.step;return{x:-a,y:-a,width:2*a,height:2*a}},directions:function(){var a=this.step;return[{offsetX:a,offsetY:0,cost:a},{offsetX:0,offsetY:a,cost:a},{offsetX:-a,offsetY:0,cost:a},{offsetX:0,offsetY:-a,cost:a}]},penalties:function(){return[0,this.step/2,this.step]},estimateCost:function(a,b){return a.manhattanDistance(b)},fallbackRoute:function(a,b,c){var d=c.prevDirIndexes||{},e=(d[a]||0)%2?g.point(a.x,b.y):g.point(b.x,a.y);return[e,b]},draggingRoute:null};return function(a,b,c){return e.call(c,a,_.extend({},f,b))}}(),joint.routers.metro=function(){if(!_.isFunction(joint.routers.manhattan))throw"Metro requires the manhattan router.";var a={diagonalCost:null,directions:function(){var a=this.step,b=this.diagonalCost||Math.ceil(Math.sqrt(a*a<<1));return[{offsetX:a,offsetY:0,cost:a},{offsetX:a,offsetY:a,cost:b},{offsetX:0,offsetY:a,cost:a},{offsetX:-a,offsetY:a,cost:b},{offsetX:-a,offsetY:0,cost:a},{offsetX:-a,offsetY:-a,cost:b},{offsetX:0,offsetY:-a,cost:a},{offsetX:a,offsetY:-a,cost:b}]},fallbackRoute:function(a,b){var c=a.theta(b),d={x:b.x,y:a.y},e={x:a.x,y:b.y};if(c%180>90){var f=d;d=e,e=f}var h=45>c%90?d:e,i=g.line(a,h),j=90*Math.ceil(c/90),k=g.point.fromPolar(i.squaredLength(),g.toRad(j+135),h),l=g.line(b,k),m=i.intersection(l);return m?[m.round(),b]:[b]}};return function(b,c,d){return joint.routers.manhattan(b,_.extend({},a,c),d)}}(),joint.connectors.normal=function(a,b,c){var d=["M",a.x,a.y];return _.each(c,function(a){d.push(a.x,a.y)}),d.push(b.x,b.y),d.join(" ")},joint.connectors.rounded=function(a,b,c,d){var e,f,h,i,j,k,l=d.radius||10,m=["M",a.x,a.y];return _.each(c,function(d,n){j=c[n-1]||a,k=c[n+1]||b,h=i||g.point(d).distance(j)/2,i=g.point(d).distance(k)/2,e=g.point(d).move(j,-Math.min(l,h)).round(),f=g.point(d).move(k,-Math.min(l,i)).round(),m.push(e.x,e.y,"S",d.x,d.y,f.x,f.y,"L")}),m.push(b.x,b.y),m.join(" ")},joint.connectors.smooth=function(a,b,c){var d;if(c.length)d=g.bezier.curveThroughPoints([a].concat(c).concat([b]));else{var e=a.x<b.x?b.x-(b.x-a.x)/2:a.x-(a.x-b.x)/2;d=["M",a.x,a.y,"C",e,a.y,e,b.y,b.x,b.y]}return d.join(" ")};