| /* |
| Copyright (c) 2004-2006, The Dojo Foundation |
| All Rights Reserved. |
| |
| 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 |
| */ |
| |
| |
| |
| 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; |
| }}); |
| |