/*
 * Ext JS Library 2.2
 * Copyright(c) 2006-2008, Ext JS, LLC.
 * licensing@extjs.com
 * 
 * http://extjs.com/license
 */

if(Ext.dd.DropZone){Ext.tree.TreeDropZone=function(A,B){this.allowParentInsert=false;this.allowContainerDrop=false;this.appendOnly=false;Ext.tree.TreeDropZone.superclass.constructor.call(this,A.innerCt,B);this.tree=A;this.dragOverData={};this.lastInsertClass="x-tree-no-status"};Ext.extend(Ext.tree.TreeDropZone,Ext.dd.DropZone,{ddGroup:"TreeDD",expandDelay:1000,expandNode:function(A){if(A.hasChildNodes()&&!A.isExpanded()){A.expand(false,null,this.triggerCacheRefresh.createDelegate(this))}},queueExpand:function(A){this.expandProcId=this.expandNode.defer(this.expandDelay,this,[A])},cancelExpand:function(){if(this.expandProcId){clearTimeout(this.expandProcId);this.expandProcId=false}},isValidDropPoint:function(A,I,G,D,C){if(!A||!C){return false}var E=A.node;var F=C.node;if(!(E&&E.isTarget&&I)){return false}if(I=="append"&&E.allowChildren===false){return false}if((I=="above"||I=="below")&&(E.parentNode&&E.parentNode.allowChildren===false)){return false}if(F&&(E==F||F.contains(E))){return false}var B=this.dragOverData;B.tree=this.tree;B.target=E;B.data=C;B.point=I;B.source=G;B.rawEvent=D;B.dropNode=F;B.cancel=false;var H=this.tree.fireEvent("nodedragover",B);return B.cancel===false&&H!==false},getDropPoint:function(E,D,I){var J=D.node;if(J.isRoot){return J.allowChildren!==false?"append":false}var B=D.ddel;var K=Ext.lib.Dom.getY(B),G=K+B.offsetHeight;var F=Ext.lib.Event.getPageY(E);var H=J.allowChildren===false||J.isLeaf();if(this.appendOnly||J.parentNode.allowChildren===false){return H?false:"append"}var C=false;if(!this.allowParentInsert){C=J.hasChildNodes()&&J.isExpanded()}var A=(G-K)/(H?2:3);if(F>=K&&F<(K+A)){return"above"}else{if(!C&&(H||F>=G-A&&F<=G)){return"below"}else{return"append"}}},onNodeEnter:function(D,A,C,B){this.cancelExpand()},onNodeOver:function(B,G,F,E){var I=this.getDropPoint(F,B,G);var C=B.node;if(!this.expandProcId&&I=="append"&&C.hasChildNodes()&&!B.node.isExpanded()){this.queueExpand(C)}else{if(I!="append"){this.cancelExpand()}}var D=this.dropNotAllowed;if(this.isValidDropPoint(B,I,G,F,E)){if(I){var A=B.ddel;var H;if(I=="above"){D=B.node.isFirst()?"x-tree-drop-ok-above":"x-tree-drop-ok-between";H="x-tree-drag-insert-above"}else{if(I=="below"){D=B.node.isLast()?"x-tree-drop-ok-below":"x-tree-drop-ok-between";H="x-tree-drag-insert-below"}else{D="x-tree-drop-ok-append";H="x-tree-drag-append"}}if(this.lastInsertClass!=H){Ext.fly(A).replaceClass(this.lastInsertClass,H);this.lastInsertClass=H}}}return D},onNodeOut:function(D,A,C,B){this.cancelExpand();this.removeDropIndicators(D)},onNodeDrop:function(C,I,E,D){var H=this.getDropPoint(E,C,I);var F=C.node;F.ui.startDrop();if(!this.isValidDropPoint(C,H,I,E,D)){F.ui.endDrop();return false}var G=D.node||(I.getTreeNode?I.getTreeNode(D,F,H,E):null);var B={tree:this.tree,target:F,data:D,point:H,source:I,rawEvent:E,dropNode:G,cancel:!G,dropStatus:false};var A=this.tree.fireEvent("beforenodedrop",B);if(A===false||B.cancel===true||!B.dropNode){F.ui.endDrop();return B.dropStatus}F=B.target;if(H=="append"&&!F.isExpanded()){F.expand(false,null,function(){this.completeDrop(B)}.createDelegate(this))}else{this.completeDrop(B)}return true},completeDrop:function(G){var D=G.dropNode,E=G.point,C=G.target;if(!Ext.isArray(D)){D=[D]}var F;for(var B=0,A=D.length;B<A;B++){F=D[B];if(E=="above"){C.parentNode.insertBefore(F,C)}else{if(E=="below"){C.parentNode.insertBefore(F,C.nextSibling)}else{C.appendChild(F)}}}F.ui.focus();if(Ext.enableFx&&this.tree.hlDrop){F.ui.highlight()}C.ui.endDrop();this.tree.fireEvent("nodedrop",G)},afterNodeMoved:function(A,C,E,D,B){if(Ext.enableFx&&this.tree.hlDrop){B.ui.focus();B.ui.highlight()}this.tree.fireEvent("nodedrop",this.tree,D,C,A,E)},getTree:function(){return this.tree},removeDropIndicators:function(B){if(B&&B.ddel){var A=B.ddel;Ext.fly(A).removeClass(["x-tree-drag-insert-above","x-tree-drag-insert-below","x-tree-drag-append"]);this.lastInsertClass="_noclass"}},beforeDragDrop:function(B,A,C){this.cancelExpand();return true},afterRepair:function(A){if(A&&Ext.enableFx){A.node.ui.highlight()}this.hideProxy()}})};