| /* |
| 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){ |
| |
| /* no DND by default for compatibility */ |
| if (this.DNDController == "create") { |
| dojo.require("dojo.dnd.TreeDragAndDrop"); |
| this.DNDController = new dojo.dnd.TreeDNDController(this); |
| } |
| |
| |
| |
| }, |
| |
| |
| /** |
| * Binds controller to all tree events |
| */ |
| listenTree: function(tree) { |
| //dojo.debug("Event "+tree.eventNames.treeClick); |
| 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) { |
| //alert("Killing myself "+this.widgetId); |
| this.destroy(); |
| //dojo.debug("done"); |
| } |
| }, |
| |
| onCreateDOMNode: function(message) { |
| |
| var node = message.source; |
| |
| |
| if (node.expandLevel > 0) { |
| this.expandToLevel(node, node.expandLevel); |
| } |
| }, |
| |
| // perform actions-initializers for tree |
| 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; |
| // recursively expand opened node |
| this.process = function() { |
| //dojo.debug("Process "+node+" level "+level); |
| 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(); |
| }, |
| |
| // =============================== move ============================ |
| |
| /** |
| * Checks whether it is ok to change parent of child to newParent |
| * May incur type checks etc |
| * |
| * It should check only hierarchical possibility w/o index, etc |
| * because in onDragOver event for Between DND mode we can't calculate index at once on onDragOVer. |
| * index changes as client moves mouse up-down over the node |
| */ |
| canMove: function(child, newParent){ |
| |
| if (child.actionIsDisabled(child.actions.MOVE)) { |
| return false; |
| } |
| |
| // if we move under same parent then no matter if ADDCHILD disabled for him |
| // but if we move to NEW parent then check if action is disabled for him |
| // also covers case for newParent being a non-folder in strict mode etc |
| if (child.parent !== newParent && newParent.actionIsDisabled(newParent.actions.ADDCHILD)) { |
| return false; |
| } |
| |
| // Can't move parent under child. check whether new parent is child of "child". |
| var node = newParent; |
| while(node.isTreeNode) { |
| //dojo.debugShallow(node.title) |
| if (node === child) { |
| // parent of newParent is child |
| return false; |
| } |
| node = node.parent; |
| } |
| |
| return true; |
| }, |
| |
| |
| move: function(child, newParent, index) { |
| |
| /* move sourceTreeNode to new parent */ |
| 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; |
| }, |
| |
| // =============================== removeNode ============================ |
| |
| |
| 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]); |
| } |
| }, |
| |
| |
| // ----------------------------------------------------------------------------- |
| // Create node stuff |
| // ----------------------------------------------------------------------------- |
| |
| |
| canCreateChild: function(parent, index, data) { |
| if (parent.actionIsDisabled(parent.actions.ADDCHILD)) return false; |
| |
| return true; |
| }, |
| |
| |
| /* send data to server and add child from server */ |
| /* data may contain an almost ready child, or anything else, suggested to server */ |
| /*in RPC controllers server responds with child data to be inserted */ |
| 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; |
| } |
| |
| |
| |
| }); |