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
78 * The function a {@link Roo.dd.DragSource} calls continuously while it is being dragged over the target.
79 * This method will be called on every mouse movement while the drag source is over the drop target.
80 * This default implementation simply returns the dropAllowed config value.
82 * IMPORTANT : it should set this.dropAllowed
84 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
85 * @param {Event} e The event
86 * @param {Object} data An object containing arbitrary data supplied by the drag source
99 Roo.extend(Roo.dd.DropTarget, Roo.dd.DDTarget, {
101 * @cfg {String} overClass
102 * The CSS class applied to the drop target element while the drag source is over it (defaults to "").
105 * @cfg {String} dropAllowed
106 * The CSS class returned to the drag source when drop is allowed (defaults to "x-dd-drop-ok").
108 dropAllowed : "x-dd-drop-ok",
110 * @cfg {String} dropNotAllowed
111 * The CSS class returned to the drag source when drop is not allowed (defaults to "x-dd-drop-nodrop").
113 dropNotAllowed : "x-dd-drop-nodrop",
119 isNotifyTarget : true,
122 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the source is now over the
123 * target. This default implementation adds the CSS class specified by overClass (if any) to the drop element
124 * and returns the dropAllowed config value. This method should be overridden if drop validation is required.
125 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
126 * @param {Event} e The event
127 * @param {Object} data An object containing arbitrary data supplied by the drag source
128 * @return {String} status The CSS class that communicates the drop status back to the source so that the
129 * underlying {@link Roo.dd.StatusProxy} can be updated
131 notifyEnter : function(dd, e, data){
133 this.el.addClass(this.overClass);
135 return this.dropAllowed;
139 * The function a {@link Roo.dd.DragSource} calls continuously while it is being dragged over the target.
140 * This method will be called on every mouse movement while the drag source is over the drop target.
141 * This default implementation simply returns the dropAllowed config value.
142 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
143 * @param {Event} e The event
144 * @param {Object} data An object containing arbitrary data supplied by the drag source
145 * @return {String} status The CSS class that communicates the drop status back to the source so that the
146 * underlying {@link Roo.dd.StatusProxy} can be updated
148 notifyOver : function(dd, e, data){
149 return this.dropAllowed;
153 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the source has been dragged
154 * out of the target without dropping. This default implementation simply removes the CSS class specified by
155 * overClass (if any) from the drop element.
156 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
157 * @param {Event} e The event
158 * @param {Object} data An object containing arbitrary data supplied by the drag source
160 notifyOut : function(dd, e, data){
162 this.el.removeClass(this.overClass);
167 * The function a {@link Roo.dd.DragSource} calls once to notify this drop target that the dragged item has
168 * been dropped on it. This method has no default implementation and returns false, so you must provide an
169 * implementation that does something to process the drop event and returns true so that the drag source's
170 * repair action does not run.
171 * @param {Roo.dd.DragSource} source The drag source that was dragged over this drop target
172 * @param {Event} e The event
173 * @param {Object} data An object containing arbitrary data supplied by the drag source
174 * @return {Boolean} True if the drop was valid, else false
176 notifyDrop : function(dd, e, data){