/*!
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* Ext JS Library 3.1.0
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* Copyright(c) 2006-2009 Ext JS, LLC
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* licensing@extjs.com
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* http://www.extjs.com/license
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*/
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/**
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* @class Ext.grid.GridDragZone
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* @extends Ext.dd.DragZone
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* <p>A customized implementation of a {@link Ext.dd.DragZone DragZone} which provides default implementations of two of the
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* template methods of DragZone to enable dragging of the selected rows of a GridPanel.</p>
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* <p>A cooperating {@link Ext.dd.DropZone DropZone} must be created who's template method implementations of
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* {@link Ext.dd.DropZone#onNodeEnter onNodeEnter}, {@link Ext.dd.DropZone#onNodeOver onNodeOver},
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* {@link Ext.dd.DropZone#onNodeOut onNodeOut} and {@link Ext.dd.DropZone#onNodeDrop onNodeDrop}</p> are able
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* to process the {@link #getDragData data} which is provided.
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*/
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Ext.grid.GridDragZone = function(grid, config){
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this.view = grid.getView();
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Ext.grid.GridDragZone.superclass.constructor.call(this, this.view.mainBody.dom, config);
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this.scroll = false;
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this.grid = grid;
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this.ddel = document.createElement('div');
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this.ddel.className = 'x-grid-dd-wrap';
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};
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Ext.extend(Ext.grid.GridDragZone, Ext.dd.DragZone, {
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ddGroup : "GridDD",
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/**
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* <p>The provided implementation of the getDragData method which collects the data to be dragged from the GridPanel on mousedown.</p>
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* <p>This data is available for processing in the {@link Ext.dd.DropZone#onNodeEnter onNodeEnter}, {@link Ext.dd.DropZone#onNodeOver onNodeOver},
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* {@link Ext.dd.DropZone#onNodeOut onNodeOut} and {@link Ext.dd.DropZone#onNodeDrop onNodeDrop} methods of a cooperating {@link Ext.dd.DropZone DropZone}.</p>
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* <p>The data object contains the following properties:<ul>
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* <li><b>grid</b> : Ext.Grid.GridPanel<div class="sub-desc">The GridPanel from which the data is being dragged.</div></li>
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* <li><b>ddel</b> : htmlElement<div class="sub-desc">An htmlElement which provides the "picture" of the data being dragged.</div></li>
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* <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>
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* <li><b>selections</b> : Array<div class="sub-desc">An Array of the selected Records which are being dragged from the GridPanel.</div></li>
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* </ul></p>
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*/
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getDragData : function(e){
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var t = Ext.lib.Event.getTarget(e);
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var rowIndex = this.view.findRowIndex(t);
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if(rowIndex !== false){
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var sm = this.grid.selModel;
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if(!sm.isSelected(rowIndex) || e.hasModifier()){
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sm.handleMouseDown(this.grid, rowIndex, e);
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}
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return {grid: this.grid, ddel: this.ddel, rowIndex: rowIndex, selections:sm.getSelections()};
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}
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return false;
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},
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/**
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* <p>The provided implementation of the onInitDrag method. Sets the <tt>innerHTML</tt> of the drag proxy which provides the "picture"
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* of the data being dragged.</p>
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* <p>The <tt>innerHTML</tt> data is found by calling the owning GridPanel's {@link Ext.grid.GridPanel#getDragDropText getDragDropText}.</p>
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*/
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onInitDrag : function(e){
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var data = this.dragData;
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this.ddel.innerHTML = this.grid.getDragDropText();
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this.proxy.update(this.ddel);
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// fire start drag?
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},
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/**
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* An empty immplementation. Implement this to provide behaviour after a repair of an invalid drop. An implementation might highlight
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* the selected rows to show that they have not been dragged.
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*/
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afterRepair : function(){
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this.dragging = false;
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},
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/**
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* <p>An empty implementation. Implement this to provide coordinates for the drag proxy to slide back to after an invalid drop.</p>
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* <p>Called before a repair of an invalid drop to get the XY to animate to.</p>
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* @param {EventObject} e The mouse up event
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* @return {Array} The xy location (e.g. [100, 200])
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*/
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getRepairXY : function(e, data){
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return false;
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},
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onEndDrag : function(data, e){
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// fire end drag?
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},
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onValidDrop : function(dd, e, id){
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// fire drag drop?
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this.hideProxy();
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},
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beforeInvalidDrop : function(e, id){
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}
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});
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