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);
34 * @scope Roo.BasicLayoutRegion
40 * Fires when the layout for this region is changed.
41 * @param {Roo.LayoutRegion} this
45 * @event visibilitychange
46 * Fires when this region is shown or hidden
47 * @param {Roo.LayoutRegion} this
48 * @param {Boolean} visibility true or false
50 "visibilitychange" : true,
52 Roo.dd.DropTarget.superclass.constructor.call( this,
54 this.ddGroup || this.group,
59 * @scope Roo.dd.DropTarget
64 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the source is now over the
65 * target. This default implementation adds the CSS class specified by overClass (if any) to the drop element
66 * and returns the dropAllowed config value. This method should be overridden if drop validation is required.
68 * IMPORTANT : it should set this.overClass and this.dropAllowed;
70 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
71 * @param {Event} e The event
72 * @param {Object} data An object containing arbitrary data supplied by the drag source
73 * @return {String} status The CSS class that communicates the drop status back to the source so that the
74 * underlying {@link Roo.dd.StatusProxy} can be updated
87 Roo.extend(Roo.dd.DropTarget, Roo.dd.DDTarget, {
89 * @cfg {String} overClass
90 * The CSS class applied to the drop target element while the drag source is over it (defaults to "").
93 * @cfg {String} dropAllowed
94 * The CSS class returned to the drag source when drop is allowed (defaults to "x-dd-drop-ok").
96 dropAllowed : "x-dd-drop-ok",
98 * @cfg {String} dropNotAllowed
99 * The CSS class returned to the drag source when drop is not allowed (defaults to "x-dd-drop-nodrop").
101 dropNotAllowed : "x-dd-drop-nodrop",
107 isNotifyTarget : true,
110 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the source is now over the
111 * target. This default implementation adds the CSS class specified by overClass (if any) to the drop element
112 * and returns the dropAllowed config value. This method should be overridden if drop validation is required.
113 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
114 * @param {Event} e The event
115 * @param {Object} data An object containing arbitrary data supplied by the drag source
116 * @return {String} status The CSS class that communicates the drop status back to the source so that the
117 * underlying {@link Roo.dd.StatusProxy} can be updated
119 notifyEnter : function(dd, e, data){
121 this.el.addClass(this.overClass);
123 return this.dropAllowed;
127 * The function a {@link Roo.dd.DragSource} calls continuously while it is being dragged over the target.
128 * This method will be called on every mouse movement while the drag source is over the drop target.
129 * This default implementation simply returns the dropAllowed config value.
130 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
131 * @param {Event} e The event
132 * @param {Object} data An object containing arbitrary data supplied by the drag source
133 * @return {String} status The CSS class that communicates the drop status back to the source so that the
134 * underlying {@link Roo.dd.StatusProxy} can be updated
136 notifyOver : function(dd, e, data){
137 return this.dropAllowed;
141 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the source has been dragged
142 * out of the target without dropping. This default implementation simply removes the CSS class specified by
143 * overClass (if any) from the drop element.
144 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
145 * @param {Event} e The event
146 * @param {Object} data An object containing arbitrary data supplied by the drag source
148 notifyOut : function(dd, e, data){
150 this.el.removeClass(this.overClass);
155 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the dragged item has
156 * been dropped on it. This method has no default implementation and returns false, so you must provide an
157 * implementation that does something to process the drop event and returns true so that the drag source's
158 * repair action does not run.
159 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
160 * @param {Event} e The event
161 * @param {Object} data An object containing arbitrary data supplied by the drag source
162 * @return {Boolean} True if the drop was valid, else false
164 notifyDrop : function(dd, e, data){