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/* |
Copyright (c) 2004-2006, The Dojo Foundation |
All Rights Reserved. |
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Licensed under the Academic Free License version 2.1 or above OR the |
modified BSD license. For more information on Dojo licensing, see: |
|
http://dojotoolkit.org/community/licensing.shtml |
*/ |
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dojo.provide("dojo.widget.TreeBasicController"); |
dojo.require("dojo.event.*"); |
dojo.require("dojo.json"); |
dojo.require("dojo.io.*"); |
dojo.widget.defineWidget("dojo.widget.TreeBasicController", dojo.widget.HtmlWidget, {widgetType:"TreeBasicController", DNDController:"", dieWithTree:false, initialize:function (args, frag) { |
if (this.DNDController == "create") { |
dojo.require("dojo.dnd.TreeDragAndDrop"); |
this.DNDController = new dojo.dnd.TreeDNDController(this); |
} |
}, listenTree:function (tree) { |
dojo.event.topic.subscribe(tree.eventNames.createDOMNode, this, "onCreateDOMNode"); |
dojo.event.topic.subscribe(tree.eventNames.treeClick, this, "onTreeClick"); |
dojo.event.topic.subscribe(tree.eventNames.treeCreate, this, "onTreeCreate"); |
dojo.event.topic.subscribe(tree.eventNames.treeDestroy, this, "onTreeDestroy"); |
if (this.DNDController) { |
this.DNDController.listenTree(tree); |
} |
}, unlistenTree:function (tree) { |
dojo.event.topic.unsubscribe(tree.eventNames.createDOMNode, this, "onCreateDOMNode"); |
dojo.event.topic.unsubscribe(tree.eventNames.treeClick, this, "onTreeClick"); |
dojo.event.topic.unsubscribe(tree.eventNames.treeCreate, this, "onTreeCreate"); |
dojo.event.topic.unsubscribe(tree.eventNames.treeDestroy, this, "onTreeDestroy"); |
}, onTreeDestroy:function (message) { |
var tree = message.source; |
this.unlistenTree(tree); |
if (this.dieWithTree) { |
this.destroy(); |
} |
}, onCreateDOMNode:function (message) { |
var node = message.source; |
if (node.expandLevel > 0) { |
this.expandToLevel(node, node.expandLevel); |
} |
}, onTreeCreate:function (message) { |
var tree = message.source; |
var _this = this; |
if (tree.expandLevel) { |
dojo.lang.forEach(tree.children, function (child) { |
_this.expandToLevel(child, tree.expandLevel - 1); |
}); |
} |
}, expandToLevel:function (node, level) { |
if (level == 0) { |
return; |
} |
var children = node.children; |
var _this = this; |
var handler = function (node, expandLevel) { |
this.node = node; |
this.expandLevel = expandLevel; |
this.process = function () { |
for (var i = 0; i < this.node.children.length; i++) { |
var child = node.children[i]; |
_this.expandToLevel(child, this.expandLevel); |
} |
}; |
}; |
var h = new handler(node, level - 1); |
this.expand(node, false, h, h.process); |
}, onTreeClick:function (message) { |
var node = message.source; |
if (node.isLocked()) { |
return false; |
} |
if (node.isExpanded) { |
this.collapse(node); |
} else { |
this.expand(node); |
} |
}, expand:function (node, sync, callObj, callFunc) { |
node.expand(); |
if (callFunc) { |
callFunc.apply(callObj, [node]); |
} |
}, collapse:function (node) { |
node.collapse(); |
}, canMove:function (child, newParent) { |
if (child.actionIsDisabled(child.actions.MOVE)) { |
return false; |
} |
if (child.parent !== newParent && newParent.actionIsDisabled(newParent.actions.ADDCHILD)) { |
return false; |
} |
var node = newParent; |
while (node.isTreeNode) { |
if (node === child) { |
return false; |
} |
node = node.parent; |
} |
return true; |
}, move:function (child, newParent, index) { |
if (!this.canMove(child, newParent)) { |
return false; |
} |
var result = this.doMove(child, newParent, index); |
if (!result) { |
return result; |
} |
if (newParent.isTreeNode) { |
this.expand(newParent); |
} |
return result; |
}, doMove:function (child, newParent, index) { |
child.tree.move(child, newParent, index); |
return true; |
}, canRemoveNode:function (child) { |
if (child.actionIsDisabled(child.actions.REMOVE)) { |
return false; |
} |
return true; |
}, removeNode:function (node, callObj, callFunc) { |
if (!this.canRemoveNode(node)) { |
return false; |
} |
return this.doRemoveNode(node, callObj, callFunc); |
}, doRemoveNode:function (node, callObj, callFunc) { |
node.tree.removeNode(node); |
if (callFunc) { |
callFunc.apply(dojo.lang.isUndefined(callObj) ? this : callObj, [node]); |
} |
}, canCreateChild:function (parent, index, data) { |
if (parent.actionIsDisabled(parent.actions.ADDCHILD)) { |
return false; |
} |
return true; |
}, createChild:function (parent, index, data, callObj, callFunc) { |
if (!this.canCreateChild(parent, index, data)) { |
return false; |
} |
return this.doCreateChild.apply(this, arguments); |
}, doCreateChild:function (parent, index, data, callObj, callFunc) { |
var widgetType = data.widgetType ? data.widgetType : "TreeNode"; |
var newChild = dojo.widget.createWidget(widgetType, data); |
parent.addChild(newChild, index); |
this.expand(parent); |
if (callFunc) { |
callFunc.apply(callObj, [newChild]); |
} |
return newChild; |
}}); |
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