<?php
/**
 *## TbJsonGridColumn class file
 *
 * @author: antonio ramirez <antonio@clevertech.biz>
 * @copyright Copyright &copy; Clevertech 2012-
 * @license http://www.opensource.org/licenses/bsd-license.php New BSD License
 */

Yii::import('booster.widgets.TbDataColumn');

/**
 *## TbJsonGridColumn class
 *
 * This column works specifically with TbJsonGridView.
 * This is the base class for TbJsonDataColumn
 *
 * @property TbJsonGridView $grid
 *
 * @package booster.widgets.grids.columns.json
 */
class TbJsonGridColumn extends TbDataColumn
{

	/**
	 * Renders the header cell.
	 */
	public function renderHeaderCell()
	{
		if ($this->grid->json) {
			$header = array('id' => $this->id);
			$content = array();
			if ($this->grid->enableSorting && $this->sortable && $this->name !== null) {
				$sort = $this->grid->dataProvider->getSort();
				$label = isset($this->header) ? $this->header : $sort->resolveLabel($this->name);

				if ($sort->resolveAttribute($this->name) !== false) {
					$label .= '<span class="caret"></span>';
				}
				$content['content'] = $sort->link($this->name, $label, array('class' => 'sort-link'));
			} else {
				if ($this->name !== null && $this->header === null) {
					if ($this->grid->dataProvider instanceof CActiveDataProvider) {
						$content['content'] = CHtml::encode(
							$this->grid->dataProvider->model->getAttributeLabel($this->name)
						);
					} else {
						$content['content'] = CHtml::encode($this->name);
					}
				} else {
					$content['content'] = trim($this->header) !== '' ? $this->header
						: $this->grid->blankDisplay;
				}
			}
			return CMap::mergeArray($header, $content);
		}
		parent::renderHeaderCell();
	}
}