X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/0494b8d9b9bb03ab6c22b34dae81261e3cd7e3e6..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/docs/source/TreeDropZone.html
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-
-
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- The source code
-
-
-
-
- /*!
- * Ext JS Library 3.3.1
- * Copyright(c) 2006-2010 Sencha Inc.
- * licensing@sencha.com
- * http://www.sencha.com/license
- */
-/**
- * @class Ext.tree.TreeDropZone
- * @extends Ext.dd.DropZone
- * @constructor
- * @param {String/HTMLElement/Element} tree The {@link Ext.tree.TreePanel} for which to enable dropping
- * @param {Object} config
- */
-if(Ext.dd.DropZone){
-
-Ext.tree.TreeDropZone = function(tree, config){
- /**
- * @cfg {Boolean} allowParentInsert
- * Allow inserting a dragged node between an expanded parent node and its first child that will become a
- * sibling of the parent when dropped (defaults to false)
- */
- this.allowParentInsert = config.allowParentInsert || false;
- /**
- * @cfg {String} allowContainerDrop
- * True if drops on the tree container (outside of a specific tree node) are allowed (defaults to false)
- */
- this.allowContainerDrop = config.allowContainerDrop || false;
- /**
- * @cfg {String} appendOnly
- * True if the tree should only allow append drops (use for trees which are sorted, defaults to false)
- */
- this.appendOnly = config.appendOnly || false;
-
- Ext.tree.TreeDropZone.superclass.constructor.call(this, tree.getTreeEl(), config);
- /**
- * The TreePanel for this drop zone
- * @type Ext.tree.TreePanel
- * @property
- */
- this.tree = tree;
- /**
- * Arbitrary data that can be associated with this tree and will be included in the event object that gets
- * passed to any nodedragover event handler (defaults to {})
- * @type Ext.tree.TreePanel
- * @property
- */
- this.dragOverData = {};
- // private
- this.lastInsertClass = "x-tree-no-status";
-};
-
-Ext.extend(Ext.tree.TreeDropZone, Ext.dd.DropZone, {
- /**
- * @cfg {String} ddGroup
- * A named drag drop group to which this object belongs. If a group is specified, then this object will only
- * interact with other drag drop objects in the same group (defaults to 'TreeDD').
- */
- ddGroup : "TreeDD",
-
- /**
- * @cfg {String} expandDelay
- * The delay in milliseconds to wait before expanding a target tree node while dragging a droppable node
- * over the target (defaults to 1000)
- */
- expandDelay : 1000,
-
- // private
- expandNode : function(node){
- if(node.hasChildNodes() && !node.isExpanded()){
- node.expand(false, null, this.triggerCacheRefresh.createDelegate(this));
- }
- },
-
- // private
- queueExpand : function(node){
- this.expandProcId = this.expandNode.defer(this.expandDelay, this, [node]);
- },
-
- // private
- cancelExpand : function(){
- if(this.expandProcId){
- clearTimeout(this.expandProcId);
- this.expandProcId = false;
- }
- },
-
- // private
- isValidDropPoint : function(n, pt, dd, e, data){
- if(!n || !data){ return false; }
- var targetNode = n.node;
- var dropNode = data.node;
- // default drop rules
- if(!(targetNode && targetNode.isTarget && pt)){
- return false;
- }
- if(pt == "append" && targetNode.allowChildren === false){
- return false;
- }
- if((pt == "above" || pt == "below") && (targetNode.parentNode && targetNode.parentNode.allowChildren === false)){
- return false;
- }
- if(dropNode && (targetNode == dropNode || dropNode.contains(targetNode))){
- return false;
- }
- // reuse the object
- var overEvent = this.dragOverData;
- overEvent.tree = this.tree;
- overEvent.target = targetNode;
- overEvent.data = data;
- overEvent.point = pt;
- overEvent.source = dd;
- overEvent.rawEvent = e;
- overEvent.dropNode = dropNode;
- overEvent.cancel = false;
- var result = this.tree.fireEvent("nodedragover", overEvent);
- return overEvent.cancel === false && result !== false;
- },
-
- // private
- getDropPoint : function(e, n, dd){
- var tn = n.node;
- if(tn.isRoot){
- return tn.allowChildren !== false ? "append" : false; // always append for root
- }
- var dragEl = n.ddel;
- var t = Ext.lib.Dom.getY(dragEl), b = t + dragEl.offsetHeight;
- var y = Ext.lib.Event.getPageY(e);
- var noAppend = tn.allowChildren === false || tn.isLeaf();
- if(this.appendOnly || tn.parentNode.allowChildren === false){
- return noAppend ? false : "append";
- }
- var noBelow = false;
- if(!this.allowParentInsert){
- noBelow = tn.hasChildNodes() && tn.isExpanded();
- }
- var q = (b - t) / (noAppend ? 2 : 3);
- if(y >= t && y < (t + q)){
- return "above";
- }else if(!noBelow && (noAppend || y >= b-q && y <= b)){
- return "below";
- }else{
- return "append";
- }
- },
-
- // private
- onNodeEnter : function(n, dd, e, data){
- this.cancelExpand();
- },
-
- onContainerOver : function(dd, e, data) {
- if (this.allowContainerDrop && this.isValidDropPoint({ ddel: this.tree.getRootNode().ui.elNode, node: this.tree.getRootNode() }, "append", dd, e, data)) {
- return this.dropAllowed;
- }
- return this.dropNotAllowed;
- },
-
- // private
- onNodeOver : function(n, dd, e, data){
- var pt = this.getDropPoint(e, n, dd);
- var node = n.node;
-
- // auto node expand check
- if(!this.expandProcId && pt == "append" && node.hasChildNodes() && !n.node.isExpanded()){
- this.queueExpand(node);
- }else if(pt != "append"){
- this.cancelExpand();
- }
-
- // set the insert point style on the target node
- var returnCls = this.dropNotAllowed;
- if(this.isValidDropPoint(n, pt, dd, e, data)){
- if(pt){
- var el = n.ddel;
- var cls;
- if(pt == "above"){
- returnCls = n.node.isFirst() ? "x-tree-drop-ok-above" : "x-tree-drop-ok-between";
- cls = "x-tree-drag-insert-above";
- }else if(pt == "below"){
- returnCls = n.node.isLast() ? "x-tree-drop-ok-below" : "x-tree-drop-ok-between";
- cls = "x-tree-drag-insert-below";
- }else{
- returnCls = "x-tree-drop-ok-append";
- cls = "x-tree-drag-append";
- }
- if(this.lastInsertClass != cls){
- Ext.fly(el).replaceClass(this.lastInsertClass, cls);
- this.lastInsertClass = cls;
- }
- }
- }
- return returnCls;
- },
-
- // private
- onNodeOut : function(n, dd, e, data){
- this.cancelExpand();
- this.removeDropIndicators(n);
- },
-
- // private
- onNodeDrop : function(n, dd, e, data){
- var point = this.getDropPoint(e, n, dd);
- var targetNode = n.node;
- targetNode.ui.startDrop();
- if(!this.isValidDropPoint(n, point, dd, e, data)){
- targetNode.ui.endDrop();
- return false;
- }
- // first try to find the drop node
- var dropNode = data.node || (dd.getTreeNode ? dd.getTreeNode(data, targetNode, point, e) : null);
- return this.processDrop(targetNode, data, point, dd, e, dropNode);
- },
-
- onContainerDrop : function(dd, e, data){
- if (this.allowContainerDrop && this.isValidDropPoint({ ddel: this.tree.getRootNode().ui.elNode, node: this.tree.getRootNode() }, "append", dd, e, data)) {
- var targetNode = this.tree.getRootNode();
- targetNode.ui.startDrop();
- var dropNode = data.node || (dd.getTreeNode ? dd.getTreeNode(data, targetNode, 'append', e) : null);
- return this.processDrop(targetNode, data, 'append', dd, e, dropNode);
- }
- return false;
- },
-
- // private
- processDrop: function(target, data, point, dd, e, dropNode){
- var dropEvent = {
- tree : this.tree,
- target: target,
- data: data,
- point: point,
- source: dd,
- rawEvent: e,
- dropNode: dropNode,
- cancel: !dropNode,
- dropStatus: false
- };
- var retval = this.tree.fireEvent("beforenodedrop", dropEvent);
- if(retval === false || dropEvent.cancel === true || !dropEvent.dropNode){
- target.ui.endDrop();
- return dropEvent.dropStatus;
- }
-
- target = dropEvent.target;
- if(point == 'append' && !target.isExpanded()){
- target.expand(false, null, function(){
- this.completeDrop(dropEvent);
- }.createDelegate(this));
- }else{
- this.completeDrop(dropEvent);
- }
- return true;
- },
-
- // private
- completeDrop : function(de){
- var ns = de.dropNode, p = de.point, t = de.target;
- if(!Ext.isArray(ns)){
- ns = [ns];
- }
- var n;
- for(var i = 0, len = ns.length; i < len; i++){
- n = ns[i];
- if(p == "above"){
- t.parentNode.insertBefore(n, t);
- }else if(p == "below"){
- t.parentNode.insertBefore(n, t.nextSibling);
- }else{
- t.appendChild(n);
- }
- }
- n.ui.focus();
- if(Ext.enableFx && this.tree.hlDrop){
- n.ui.highlight();
- }
- t.ui.endDrop();
- this.tree.fireEvent("nodedrop", de);
- },
-
- // private
- afterNodeMoved : function(dd, data, e, targetNode, dropNode){
- if(Ext.enableFx && this.tree.hlDrop){
- dropNode.ui.focus();
- dropNode.ui.highlight();
- }
- this.tree.fireEvent("nodedrop", this.tree, targetNode, data, dd, e);
- },
-
- // private
- getTree : function(){
- return this.tree;
- },
-
- // private
- removeDropIndicators : function(n){
- if(n && n.ddel){
- var el = n.ddel;
- Ext.fly(el).removeClass([
- "x-tree-drag-insert-above",
- "x-tree-drag-insert-below",
- "x-tree-drag-append"]);
- this.lastInsertClass = "_noclass";
- }
- },
-
- // private
- beforeDragDrop : function(target, e, id){
- this.cancelExpand();
- return true;
- },
-
- // private
- afterRepair : function(data){
- if(data && Ext.enableFx){
- data.node.ui.highlight();
- }
- this.hideProxy();
- }
-});
-
-}
-
-
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