4 * Copyright(c) 2006-2007, Ext JS, LLC.
6 * Originally Released Under LGPL - original licence link has changed is not relivant.
9 * <script type="text/javascript">
14 * @class Roo.dd.DropTarget
15 * @extends Roo.dd.DDTarget
16 * A simple class that provides the basic implementation needed to make any element a drop target that can have
17 * draggable items dropped onto it. The drop has no effect until an implementation of notifyDrop is provided.
19 * @param {String/HTMLElement/Element} el The container element
20 * @param {Object} config
22 Roo.dd.DropTarget = function(el, config){
23 this.el = Roo.get(el);
25 Roo.apply(this, config);
27 if(this.containerScroll){
28 Roo.dd.ScrollManager.register(this.el);
31 Roo.dd.DropTarget.superclass.constructor.call(this, this.el.dom, this.ddGroup || this.group,
36 Roo.extend(Roo.dd.DropTarget, Roo.dd.DDTarget, {
38 * @cfg {String} overClass
39 * The CSS class applied to the drop target element while the drag source is over it (defaults to "").
42 * @cfg {String} dropAllowed
43 * The CSS class returned to the drag source when drop is allowed (defaults to "x-dd-drop-ok").
45 dropAllowed : "x-dd-drop-ok",
47 * @cfg {String} dropNotAllowed
48 * The CSS class returned to the drag source when drop is not allowed (defaults to "x-dd-drop-nodrop").
50 dropNotAllowed : "x-dd-drop-nodrop",
56 isNotifyTarget : true,
59 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the source is now over the
60 * target. This default implementation adds the CSS class specified by overClass (if any) to the drop element
61 * and returns the dropAllowed config value. This method should be overridden if drop validation is required.
62 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
63 * @param {Event} e The event
64 * @param {Object} data An object containing arbitrary data supplied by the drag source
65 * @return {String} status The CSS class that communicates the drop status back to the source so that the
66 * underlying {@link Roo.dd.StatusProxy} can be updated
68 notifyEnter : function(dd, e, data){
70 this.el.addClass(this.overClass);
72 return this.dropAllowed;
76 * The function a {@link Roo.dd.DragSource} calls continuously while it is being dragged over the target.
77 * This method will be called on every mouse movement while the drag source is over the drop target.
78 * This default implementation simply returns the dropAllowed config value.
79 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
80 * @param {Event} e The event
81 * @param {Object} data An object containing arbitrary data supplied by the drag source
82 * @return {String} status The CSS class that communicates the drop status back to the source so that the
83 * underlying {@link Roo.dd.StatusProxy} can be updated
85 notifyOver : function(dd, e, data){
86 return this.dropAllowed;
90 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the source has been dragged
91 * out of the target without dropping. This default implementation simply removes the CSS class specified by
92 * overClass (if any) from the drop element.
93 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
94 * @param {Event} e The event
95 * @param {Object} data An object containing arbitrary data supplied by the drag source
97 notifyOut : function(dd, e, data){
99 this.el.removeClass(this.overClass);
104 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the dragged item has
105 * been dropped on it. This method has no default implementation and returns false, so you must provide an
106 * implementation that does something to process the drop event and returns true so that the drag source's
107 * repair action does not run.
108 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
109 * @param {Event} e The event
110 * @param {Object} data An object containing arbitrary data supplied by the drag source
111 * @return {Boolean} True if the drop was valid, else false
113 notifyDrop : function(dd, e, data){