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9 <pre class="prettyprint lang-js">/*!
10 * Ext JS Library 3.3.0
11 * Copyright(c) 2006-2010 Ext JS, Inc.
13 * http://www.extjs.com/license
15 <div id="cls-Ext.dd.DropTarget"></div>/**
16 * @class Ext.dd.DropTarget
17 * @extends Ext.dd.DDTarget
18 * A simple class that provides the basic implementation needed to make any element a drop target that can have
19 * draggable items dropped onto it. The drop has no effect until an implementation of notifyDrop is provided.
21 * @param {Mixed} el The container element
22 * @param {Object} config
24 Ext.dd.DropTarget = Ext.extend(Ext.dd.DDTarget, {
26 constructor : function(el, config){
27 this.el = Ext.get(el);
29 Ext.apply(this, config);
31 if(this.containerScroll){
32 Ext.dd.ScrollManager.register(this.el);
35 Ext.dd.DropTarget.superclass.constructor.call(this, this.el.dom, this.ddGroup || this.group,
39 <div id="cfg-Ext.dd.DropTarget-ddGroup"></div>/**
40 * @cfg {String} ddGroup
41 * A named drag drop group to which this object belongs. If a group is specified, then this object will only
42 * interact with other drag drop objects in the same group (defaults to undefined).
44 <div id="cfg-Ext.dd.DropTarget-overClass"></div>/**
45 * @cfg {String} overClass
46 * The CSS class applied to the drop target element while the drag source is over it (defaults to "").
48 <div id="cfg-Ext.dd.DropTarget-dropAllowed"></div>/**
49 * @cfg {String} dropAllowed
50 * The CSS class returned to the drag source when drop is allowed (defaults to "x-dd-drop-ok").
52 dropAllowed : "x-dd-drop-ok",
53 <div id="cfg-Ext.dd.DropTarget-dropNotAllowed"></div>/**
54 * @cfg {String} dropNotAllowed
55 * The CSS class returned to the drag source when drop is not allowed (defaults to "x-dd-drop-nodrop").
57 dropNotAllowed : "x-dd-drop-nodrop",
63 isNotifyTarget : true,
65 <div id="method-Ext.dd.DropTarget-notifyEnter"></div>/**
66 * The function a {@link Ext.dd.DragSource} calls once to notify this drop target that the source is now over the
67 * target. This default implementation adds the CSS class specified by overClass (if any) to the drop element
68 * and returns the dropAllowed config value. This method should be overridden if drop validation is required.
69 * @param {Ext.dd.DragSource} source The drag source that was dragged over this drop target
70 * @param {Event} e The event
71 * @param {Object} data An object containing arbitrary data supplied by the drag source
72 * @return {String} status The CSS class that communicates the drop status back to the source so that the
73 * underlying {@link Ext.dd.StatusProxy} can be updated
75 notifyEnter : function(dd, e, data){
77 this.el.addClass(this.overClass);
79 return this.dropAllowed;
82 <div id="method-Ext.dd.DropTarget-notifyOver"></div>/**
83 * The function a {@link Ext.dd.DragSource} calls continuously while it is being dragged over the target.
84 * This method will be called on every mouse movement while the drag source is over the drop target.
85 * This default implementation simply returns the dropAllowed config value.
86 * @param {Ext.dd.DragSource} source The drag source that was dragged over this drop target
87 * @param {Event} e The event
88 * @param {Object} data An object containing arbitrary data supplied by the drag source
89 * @return {String} status The CSS class that communicates the drop status back to the source so that the
90 * underlying {@link Ext.dd.StatusProxy} can be updated
92 notifyOver : function(dd, e, data){
93 return this.dropAllowed;
96 <div id="method-Ext.dd.DropTarget-notifyOut"></div>/**
97 * The function a {@link Ext.dd.DragSource} calls once to notify this drop target that the source has been dragged
98 * out of the target without dropping. This default implementation simply removes the CSS class specified by
99 * overClass (if any) from the drop element.
100 * @param {Ext.dd.DragSource} source The drag source that was dragged over this drop target
101 * @param {Event} e The event
102 * @param {Object} data An object containing arbitrary data supplied by the drag source
104 notifyOut : function(dd, e, data){
106 this.el.removeClass(this.overClass);
110 <div id="method-Ext.dd.DropTarget-notifyDrop"></div>/**
111 * The function a {@link Ext.dd.DragSource} calls once to notify this drop target that the dragged item has
112 * been dropped on it. This method has no default implementation and returns false, so you must provide an
113 * implementation that does something to process the drop event and returns true so that the drag source's
114 * repair action does not run.
115 * @param {Ext.dd.DragSource} source The drag source that was dragged over this drop target
116 * @param {Event} e The event
117 * @param {Object} data An object containing arbitrary data supplied by the drag source
118 * @return {Boolean} True if the drop was valid, else false
120 notifyDrop : function(dd, e, data){
124 destroy : function(){
125 Ext.dd.DropTarget.superclass.destroy.call(this);
126 if(this.containerScroll){
127 Ext.dd.ScrollManager.unregister(this.el);