/*!
 * Ext JS Library 3.0.0
 * Copyright(c) 2006-2009 Ext JS, LLC
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
Ext.ns('Ext.ux.grid');

/**
 * @class Ext.ux.grid.CheckColumn
 * @extends Object
 * GridPanel plugin to add a column with check boxes to a grid.
 * <p>Example usage:</p>
 * <pre><code>
// create the column
var checkColumn = new Ext.grid.CheckColumn({
   header: 'Indoor?',
   dataIndex: 'indoor',
   id: 'check',
   width: 55
});

// add the column to the column model
var cm = new Ext.grid.ColumnModel([{
       header: 'Foo',
       ...
    },
    checkColumn
]);

// create the grid
var grid = new Ext.grid.EditorGridPanel({
    ...
    cm: cm,
    plugins: [checkColumn], // include plugin
    ...
});
 * </code></pre>
 * In addition to storing a Boolean value within the record data, this
 * class toggles a css class between <tt>'x-grid3-check-col'</tt> and
 * <tt>'x-grid3-check-col-on'</tt> to alter the background image used for
 * a column.
 */
Ext.ux.grid.CheckColumn = function(config){
    Ext.apply(this, config);
    if(!this.id){
        this.id = Ext.id();
    }
    this.renderer = this.renderer.createDelegate(this);
};

Ext.ux.grid.CheckColumn.prototype = {
	init: function(grid)
	{
		this.grid = grid;
		this.grid.on('render', function()
		{
			var view = this.grid.getView();
			view.mainBody.on('mousedown', this.onMouseDown, this);
		}, this);
	},

	onMouseDown: function(e, t)
	{
		if (this.disabled == true) return false;
		if (t.className && t.className.indexOf('x-grid3-cc-' + this.id) != -1)
		{
			e.stopEvent();
			var index = this.grid.getView().findRowIndex(t);
			var record = this.grid.store.getAt(index);
			var val = !record.data[this.dataIndex];
			record.set(this.dataIndex, val);
			if (this.click)
			{
				this.click(this.grid, record, this.dataIndex, val);
			}
		}
	},

	renderer: function(v, p, record)
	{
		p.css += ' x-grid3-check-col-td';
		return '<div class="x-grid3-check-col' + (v ? '-on' : '') + (this.disabled ? '-disabled' : '') + ' x-grid3-cc-' + this.id + '">&#160;</div>';
	}
};

// register ptype
Ext.preg('checkcolumn', Ext.ux.grid.CheckColumn);

// backwards compat
Ext.grid.CheckColumn = Ext.ux.grid.CheckColumn;