yiiapi/framework/zii/widgets/grid/CCheckBoxColumn.php

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<?php
/**
 * CCheckBoxColumn class file.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link http://www.yiiframework.com/
 * @copyright 2008-2013 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

Yii::import('zii.widgets.grid.CGridColumn');

/**
 * CCheckBoxColumn represents a grid view column of checkboxes.
 *
 * CCheckBoxColumn supports no checking (read-only), single check and multiple checking.
 * The mode is determined according to {@link selectableRows}. When in multiple checking mode, the header cell will display
 * an additional checkbox, clicking on which will check or uncheck all of the checkboxes in the data cells.
 * The header cell can be customized by {@link headerTemplate}.
 *
 * Additionally selecting a checkbox can select a grid view row (depending on {@link CGridView::selectableRows} value) if
 * {@link selectableRows} is null (default).
 *
 * By default, the checkboxes rendered in data cells will have the values that are the same as
 * the key values of the data model. One may change this by setting either {@link name} or
 * {@link value}.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @package zii.widgets.grid
 * @since 1.1
 */
class CCheckBoxColumn extends CGridColumn
{
	/**
	 * @var string the attribute name of the data model. The corresponding attribute value will be rendered
	 * in each data cell as the checkbox value. Note that if {@link value} is specified, this property will be ignored.
	 * @see value
	 */
	public $name;
	/**
	 * @var string a PHP expression that will be evaluated for every data cell and whose result will be rendered
	 * in each data cell as the checkbox value. In this expression, you can use the following variables:
	 * <ul>
	 *   <li><code>$row</code> the row number (zero-based)</li>
	 *   <li><code>$data</code> the data model for the row</li>
	 *   <li><code>$this</code> the column object</li>
	 * </ul>
	 * The PHP expression will be evaluated using {@link evaluateExpression}.
	 *
	 * A PHP expression can be any PHP code that has a value. To learn more about what an expression is,
	 * please refer to the {@link http://www.php.net/manual/en/language.expressions.php php manual}.
	 */
	public $value;
	/**
	 * @var string a PHP expression that will be evaluated for every data cell and whose result will
	 * determine if checkbox for each data cell is checked. In this expression, you can use the following variables:
	 * <ul>
	 *   <li><code>$row</code> the row number (zero-based)</li>
	 *   <li><code>$data</code> the data model for the row</li>
	 *   <li><code>$this</code> the column object</li>
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