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@leshy

leshy/graph.js

Created Jan 18, 2012
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What would you like to do?
js backbone graph node - should I use a backbone collection?
var GraphNode = Backbone.Model.extend({
defaults: { parents: [], children: [], name: 'node' },
addparent: function(parent) {
if (!this.hasparent(parent)) {
this.get('parents').push(parent)
this.trigger('addparent',parent)
parent.addchild(this)
var self = this;
parent.bind('destroy',function() { self.removeparent(parent) } )
return parent
}
return undefined
},
addchild: function(child) {
if (!this.haschild(child)) {
var children = this.get('children')
children.push(child)
this.set({children: children})
this.trigger('addchild',child)
child.addparent(this)
var self = this;
child.bind('destroy',function() { self.removechild(child) } )
return child
}
return undefined
},
bindchild: function(event,f) {
this.bind('addchild',function(child) {
child.bind(event,f)
})
this.bind('removechild',function(child) {
child.unbind(event,f)
})
},
unbindchild: function(event,f) {
// not today :)
},
removeparent: function(searchparent) {
var removed = false
var self = this
this.set({ parents : _.reject(this.get('parents'),function(parent) { if (parent == searchparent) { searchparent.removechild(self); removed = true; return true } })})
if (removed) { this.trigger('removeparent',searchparent) }
},
removechild: function(searchchild) {
var removed = false
var self = this
this.set({children: _.reject(this.get('children'),function(child) { if (child == searchchild) { searchchild.removechild(self); removed = true; return true } })})
if (removed) { this.trigger('removechild',searchchild) }
},
hasparent: function(searchparent) {
return _.find(this.get('parents'),function(parent) { return (parent === searchparent) })
},
haschild: function(searchchild) {
return _.find(this.get('children'),function(child) { return (child === searchchild) })
},
parent: function() {
var parents = this.get('parents')
if (parents.length) { return parents[0] }
},
child: function() {
var children = this.get('children')
if (children.length) { return children[0] }
},
parents: function() {
return this.get('parents')
},
children: function() {
return this.get('children')
},
name: function() {
return this.get('name')
}
})
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