/*	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.dnd.TreeDragAndDrop");dojo.require("dojo.dnd.HtmlDragAndDrop");dojo.require("dojo.lang.func");dojo.require("dojo.lang.array");dojo.require("dojo.lang.extras");dojo.require("dojo.html.layout");dojo.dnd.TreeDragSource = function (node, syncController, type, treeNode) {	this.controller = syncController;	this.treeNode = treeNode;	dojo.dnd.HtmlDragSource.call(this, node, type);};dojo.inherits(dojo.dnd.TreeDragSource, dojo.dnd.HtmlDragSource);dojo.lang.extend(dojo.dnd.TreeDragSource, {onDragStart:function () {	var dragObject = dojo.dnd.HtmlDragSource.prototype.onDragStart.call(this);	dragObject.treeNode = this.treeNode;	dragObject.onDragStart = dojo.lang.hitch(dragObject, function (e) {		this.savedSelectedNode = this.treeNode.tree.selector.selectedNode;		if (this.savedSelectedNode) {			this.savedSelectedNode.unMarkSelected();		}		var result = dojo.dnd.HtmlDragObject.prototype.onDragStart.apply(this, arguments);		var cloneGrid = this.dragClone.getElementsByTagName("img");		for (var i = 0; i < cloneGrid.length; i++) {			cloneGrid.item(i).style.backgroundImage = "url()";		}		return result;	});	dragObject.onDragEnd = function (e) {		if (this.savedSelectedNode) {			this.savedSelectedNode.markSelected();		}		return dojo.dnd.HtmlDragObject.prototype.onDragEnd.apply(this, arguments);	};	return dragObject;}, onDragEnd:function (e) {	var res = dojo.dnd.HtmlDragSource.prototype.onDragEnd.call(this, e);	return res;}});dojo.dnd.TreeDropTarget = function (domNode, controller, type, treeNode) {	this.treeNode = treeNode;	this.controller = controller;	dojo.dnd.HtmlDropTarget.apply(this, [domNode, type]);};dojo.inherits(dojo.dnd.TreeDropTarget, dojo.dnd.HtmlDropTarget);dojo.lang.extend(dojo.dnd.TreeDropTarget, {autoExpandDelay:1500, autoExpandTimer:null, position:null, indicatorStyle:"2px black solid", showIndicator:function (position) {	if (this.position == position) {		return;	}	this.hideIndicator();	this.position = position;	if (position == "before") {		this.treeNode.labelNode.style.borderTop = this.indicatorStyle;	} else {		if (position == "after") {			this.treeNode.labelNode.style.borderBottom = this.indicatorStyle;		} else {			if (position == "onto") {				this.treeNode.markSelected();			}		}	}}, hideIndicator:function () {	this.treeNode.labelNode.style.borderBottom = "";	this.treeNode.labelNode.style.borderTop = "";	this.treeNode.unMarkSelected();	this.position = null;}, onDragOver:function (e) {	var accepts = dojo.dnd.HtmlDropTarget.prototype.onDragOver.apply(this, arguments);	if (accepts && this.treeNode.isFolder && !this.treeNode.isExpanded) {		this.setAutoExpandTimer();	}	return accepts;}, accepts:function (dragObjects) {	var accepts = dojo.dnd.HtmlDropTarget.prototype.accepts.apply(this, arguments);	if (!accepts) {		return false;	}	var sourceTreeNode = dragObjects[0].treeNode;	if (dojo.lang.isUndefined(sourceTreeNode) || !sourceTreeNode || !sourceTreeNode.isTreeNode) {		dojo.raise("Source is not TreeNode or not found");	}	if (sourceTreeNode === this.treeNode) {		return false;	}	return true;}, setAutoExpandTimer:function () {	var _this = this;	var autoExpand = function () {		if (dojo.dnd.dragManager.currentDropTarget === _this) {			_this.controller.expand(_this.treeNode);		}	};	this.autoExpandTimer = dojo.lang.setTimeout(autoExpand, _this.autoExpandDelay);}, getDNDMode:function () {	return this.treeNode.tree.DNDMode;}, getAcceptPosition:function (e, sourceTreeNode) {	var DNDMode = this.getDNDMode();	if (DNDMode & dojo.widget.Tree.prototype.DNDModes.ONTO && !(!this.treeNode.actionIsDisabled(dojo.widget.TreeNode.prototype.actions.ADDCHILD) && sourceTreeNode.parent !== this.treeNode && this.controller.canMove(sourceTreeNode, this.treeNode))) {		DNDMode &= ~dojo.widget.Tree.prototype.DNDModes.ONTO;	}	var position = this.getPosition(e, DNDMode);	if (position == "onto" || (!this.isAdjacentNode(sourceTreeNode, position) && this.controller.canMove(sourceTreeNode, this.treeNode.parent))) {		return position;	} else {		return false;	}}, onDragOut:function (e) {	this.clearAutoExpandTimer();	this.hideIndicator();}, clearAutoExpandTimer:function () {	if (this.autoExpandTimer) {		clearTimeout(this.autoExpandTimer);		this.autoExpandTimer = null;	}}, onDragMove:function (e, dragObjects) {	var sourceTreeNode = dragObjects[0].treeNode;	var position = this.getAcceptPosition(e, sourceTreeNode);	if (position) {		this.showIndicator(position);	}}, isAdjacentNode:function (sourceNode, position) {	if (sourceNode === this.treeNode) {		return true;	}	if (sourceNode.getNextSibling() === this.treeNode && position == "before") {		return true;	}	if (sourceNode.getPreviousSibling() === this.treeNode && position == "after") {		return true;	}	return false;}, getPosition:function (e, DNDMode) {	var node = dojo.byId(this.treeNode.labelNode);	var mousey = e.pageY || e.clientY + dojo.body().scrollTop;	var nodey = dojo.html.getAbsolutePosition(node).y;	var height = dojo.html.getBorderBox(node).height;	var relY = mousey - nodey;	var p = relY / height;	var position = "";	if (DNDMode & dojo.widget.Tree.prototype.DNDModes.ONTO && DNDMode & dojo.widget.Tree.prototype.DNDModes.BETWEEN) {		if (p <= 0.3) {			position = "before";		} else {			if (p <= 0.7) {				position = "onto";			} else {				position = "after";			}		}	} else {		if (DNDMode & dojo.widget.Tree.prototype.DNDModes.BETWEEN) {			if (p <= 0.5) {				position = "before";			} else {				position = "after";			}		} else {			if (DNDMode & dojo.widget.Tree.prototype.DNDModes.ONTO) {				position = "onto";			}		}	}	return position;}, getTargetParentIndex:function (sourceTreeNode, position) {	var index = position == "before" ? this.treeNode.getParentIndex() : this.treeNode.getParentIndex() + 1;	if (this.treeNode.parent === sourceTreeNode.parent && this.treeNode.getParentIndex() > sourceTreeNode.getParentIndex()) {		index--;	}	return index;}, onDrop:function (e) {	var position = this.position;	this.onDragOut(e);	var sourceTreeNode = e.dragObject.treeNode;	if (!dojo.lang.isObject(sourceTreeNode)) {		dojo.raise("TreeNode not found in dragObject");	}	if (position == "onto") {		return this.controller.move(sourceTreeNode, this.treeNode, 0);	} else {		var index = this.getTargetParentIndex(sourceTreeNode, position);		return this.controller.move(sourceTreeNode, this.treeNode.parent, index);	}}});dojo.dnd.TreeDNDController = function (treeController) {	this.treeController = treeController;	this.dragSources = {};	this.dropTargets = {};};dojo.lang.extend(dojo.dnd.TreeDNDController, {listenTree:function (tree) {	dojo.event.topic.subscribe(tree.eventNames.createDOMNode, this, "onCreateDOMNode");	dojo.event.topic.subscribe(tree.eventNames.moveFrom, this, "onMoveFrom");	dojo.event.topic.subscribe(tree.eventNames.moveTo, this, "onMoveTo");	dojo.event.topic.subscribe(tree.eventNames.addChild, this, "onAddChild");	dojo.event.topic.subscribe(tree.eventNames.removeNode, this, "onRemoveNode");	dojo.event.topic.subscribe(tree.eventNames.treeDestroy, this, "onTreeDestroy");}, unlistenTree:function (tree) {	dojo.event.topic.unsubscribe(tree.eventNames.createDOMNode, this, "onCreateDOMNode");	dojo.event.topic.unsubscribe(tree.eventNames.moveFrom, this, "onMoveFrom");	dojo.event.topic.unsubscribe(tree.eventNames.moveTo, this, "onMoveTo");	dojo.event.topic.unsubscribe(tree.eventNames.addChild, this, "onAddChild");	dojo.event.topic.unsubscribe(tree.eventNames.removeNode, this, "onRemoveNode");	dojo.event.topic.unsubscribe(tree.eventNames.treeDestroy, this, "onTreeDestroy");}, onTreeDestroy:function (message) {	this.unlistenTree(message.source);}, onCreateDOMNode:function (message) {	this.registerDNDNode(message.source);}, onAddChild:function (message) {	this.registerDNDNode(message.child);}, onMoveFrom:function (message) {	var _this = this;	dojo.lang.forEach(message.child.getDescendants(), function (node) {		_this.unregisterDNDNode(node);	});}, onMoveTo:function (message) {	var _this = this;	dojo.lang.forEach(message.child.getDescendants(), function (node) {		_this.registerDNDNode(node);	});}, registerDNDNode:function (node) {	if (!node.tree.DNDMode) {		return;	}	var source = null;	var target = null;	if (!node.actionIsDisabled(node.actions.MOVE)) {		var source = new dojo.dnd.TreeDragSource(node.labelNode, this, node.tree.widgetId, node);		this.dragSources[node.widgetId] = source;	}	var target = new dojo.dnd.TreeDropTarget(node.labelNode, this.treeController, node.tree.DNDAcceptTypes, node);	this.dropTargets[node.widgetId] = target;}, unregisterDNDNode:function (node) {	if (this.dragSources[node.widgetId]) {		dojo.dnd.dragManager.unregisterDragSource(this.dragSources[node.widgetId]);		delete this.dragSources[node.widgetId];	}	if (this.dropTargets[node.widgetId]) {		dojo.dnd.dragManager.unregisterDropTarget(this.dropTargets[node.widgetId]);		delete this.dropTargets[node.widgetId];	}}});