Roo/grid/HeaderDragZone.js

/*
 * Based on:
 * Ext JS Library 1.1.1
 * Copyright(c) 2006-2007, Ext JS, LLC.
 *
 * Originally Released Under LGPL - original licence link has changed is not relivant.
 *
 * Fork - LGPL
 * <script type="text/javascript">
 */

// private
// This is a support class used internally by the Grid components
Roo.grid.HeaderDragZone = function(grid, hd, hd2){
    this.grid = grid;
    this.view = grid.getView();
    this.ddGroup = "gridHeader" + this.grid.getGridEl().id;
    Roo.grid.HeaderDragZone.superclass.constructor.call(this, hd);
    if(hd2){
        this.setHandleElId(Roo.id(hd));
        this.setOuterHandleElId(Roo.id(hd2));
    }
    this.scroll = false;
};
Roo.extend(Roo.grid.HeaderDragZone, Roo.dd.DragZone, {
    maxDragWidth: 120,
    getDragData : function(e){
        var t = Roo.lib.Event.getTarget(e);
        var h = this.view.findHeaderCell(t);
        if(h){
            return {ddel: h.firstChild, header:h};
        }
        return false;
    },

    onInitDrag : function(e){
        this.view.headersDisabled = true;
        var clone = this.dragData.ddel.cloneNode(true);
        clone.id = Roo.id();
        clone.style.width = Math.min(this.dragData.header.offsetWidth,this.maxDragWidth) + "px";
        this.proxy.update(clone);
        return true;
    },

    afterValidDrop : function(){
        var v = this.view;
        setTimeout(function(){
            v.headersDisabled = false;
        }, 50);
    },

    afterInvalidDrop : function(){
        var v = this.view;
        setTimeout(function(){
            v.headersDisabled = false;
        }, 50);
    }
});