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+<head>\r
+ <title>The source code</title>\r
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+ <pre class="prettyprint lang-js"><div id="cls-Ext.grid.GridDragZone"></div>/**
+ * @class Ext.grid.GridDragZone
+ * @extends Ext.dd.DragZone
+ * <p>A customized implementation of a {@link Ext.dd.DragZone DragZone} which provides default implementations of two of the
+ * template methods of DragZone to enable dragging of the selected rows of a GridPanel.</p>
+ * <p>A cooperating {@link Ext.dd.DropZone DropZone} must be created who's template method implementations of
+ * {@link Ext.dd.DropZone#onNodeEnter onNodeEnter}, {@link Ext.dd.DropZone#onNodeOver onNodeOver},
+ * {@link Ext.dd.DropZone#onNodeOut onNodeOut} and {@link Ext.dd.DropZone#onNodeDrop onNodeDrop}</p> are able
+ * to process the {@link #getDragData data} which is provided.
+ */
+Ext.grid.GridDragZone = function(grid, config){
+ this.view = grid.getView();
+ Ext.grid.GridDragZone.superclass.constructor.call(this, this.view.mainBody.dom, config);
+ this.scroll = false;
+ this.grid = grid;
+ this.ddel = document.createElement('div');
+ this.ddel.className = 'x-grid-dd-wrap';
+};
+
+Ext.extend(Ext.grid.GridDragZone, Ext.dd.DragZone, {
+ ddGroup : "GridDD",
+
+ <div id="method-Ext.grid.GridDragZone-getDragData"></div>/**
+ * <p>The provided implementation of the getDragData method which collects the data to be dragged from the GridPanel on mousedown.</p>
+ * <p>This data is available for processing in the {@link Ext.dd.DropZone#onNodeEnter onNodeEnter}, {@link Ext.dd.DropZone#onNodeOver onNodeOver},
+ * {@link Ext.dd.DropZone#onNodeOut onNodeOut} and {@link Ext.dd.DropZone#onNodeDrop onNodeDrop} methods of a cooperating {@link Ext.dd.DropZone DropZone}.</p>
+ * <p>The data object contains the following properties:<ul>
+ * <li><b>grid</b> : Ext.Grid.GridPanel<div class="sub-desc">The GridPanel from which the data is being dragged.</div></li>
+ * <li><b>ddel</b> : htmlElement<div class="sub-desc">An htmlElement which provides the "picture" of the data being dragged.</div></li>
+ * <li><b>rowIndex</b> : Number<div class="sub-desc">The index of the row which receieved the mousedown gesture which triggered the drag.</div></li>
+ * <li><b>selections</b> : Array<div class="sub-desc">An Array of the selected Records which are being dragged from the GridPanel.</div></li>
+ * </ul></p>
+ */
+ getDragData : function(e){
+ var t = Ext.lib.Event.getTarget(e);
+ var rowIndex = this.view.findRowIndex(t);
+ if(rowIndex !== false){
+ var sm = this.grid.selModel;
+ if(!sm.isSelected(rowIndex) || e.hasModifier()){
+ sm.handleMouseDown(this.grid, rowIndex, e);
+ }
+ return {grid: this.grid, ddel: this.ddel, rowIndex: rowIndex, selections:sm.getSelections()};
+ }
+ return false;
+ },
+
+ <div id="method-Ext.grid.GridDragZone-onInitDrag"></div>/**
+ * <p>The provided implementation of the onInitDrag method. Sets the <tt>innerHTML</tt> of the drag proxy which provides the "picture"
+ * of the data being dragged.</p>
+ * <p>The <tt>innerHTML</tt> data is found by calling the owning GridPanel's {@link Ext.grid.GridPanel#getDragDropText getDragDropText}.</p>
+ */
+ onInitDrag : function(e){
+ var data = this.dragData;
+ this.ddel.innerHTML = this.grid.getDragDropText();
+ this.proxy.update(this.ddel);
+ // fire start drag?
+ },
+
+ <div id="method-Ext.grid.GridDragZone-afterRepair"></div>/**
+ * An empty immplementation. Implement this to provide behaviour after a repair of an invalid drop. An implementation might highlight
+ * the selected rows to show that they have not been dragged.
+ */
+ afterRepair : function(){
+ this.dragging = false;
+ },
+
+ <div id="method-Ext.grid.GridDragZone-getRepairXY"></div>/**
+ * <p>An empty implementation. Implement this to provide coordinates for the drag proxy to slide back to after an invalid drop.</p>
+ * <p>Called before a repair of an invalid drop to get the XY to animate to.</p>
+ * @param {EventObject} e The mouse up event
+ * @return {Array} The xy location (e.g. [100, 200])
+ */
+ getRepairXY : function(e, data){
+ return false;
+ },
+
+ onEndDrag : function(data, e){
+ // fire end drag?
+ },
+
+ onValidDrop : function(dd, e, id){
+ // fire drag drop?
+ this.hideProxy();
+ },
+
+ beforeInvalidDrop : function(e, id){
+
+ }
+});
+</pre> \r
+</body>\r
+</html>
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