<?php /** * TCheckBoxColumn class file * * @author Qiang Xue <qiang.xue@gmail.com> * @link http://www.pradosoft.com/ * @copyright Copyright © 2005-2008 PradoSoft * @license http://www.pradosoft.com/license/ * @version $Id$ * @package System.Web.UI.WebControls */ /** * TDataGridColumn class file */ Prado::using('System.Web.UI.WebControls.TDataGridColumn'); /** * TCheckBox class file */ Prado::using('System.Web.UI.WebControls.TCheckBox'); /** * TCheckBoxColumn class * * TCheckBoxColumn represents a checkbox column that is bound to a field in a data source. * The checked state of the checkboxes are determiend by the bound data at * {@link setDataField DataField}. If {@link setReadOnly ReadOnly} is false, * TCheckBoxColumn will display an enabled checkbox provided the cells are * in edit mode. Otherwise, the checkboxes will be disabled to prevent from editting. * * The checkbox control in the TCheckBoxColumn can be accessed by one of * the following two methods: * <code> * $datagridItem->CheckBoxColumnID->CheckBox * $datagridItem->CheckBoxColumnID->Controls[0] * </code> * The second method is possible because the checkbox control created within the * datagrid cell is the first child. * * @author Qiang Xue <qiang.xue@gmail.com> * @version $Id$ * @package System.Web.UI.WebControls * @since 3.0 */ class TCheckBoxColumn extends TDataGridColumn { /** * @return string the field name from the data source to bind to the column */ public function getDataField() { return $this->getViewState('DataField',''); } /** * @param string the field name from the data source to bind to the column */ public function setDataField($value) { $this->setViewState('DataField',$value,''); } /** * @return boolean whether the items in the column can be edited. Defaults to false. */ public function getReadOnly() { return $this->getViewState('ReadOnly',false); } /** * @param boolean whether the items in the column can be edited */ public function setReadOnly($value) { $this->setViewState('ReadOnly',TPropertyValue::ensureBoolean($value),false); } /** * Initializes the specified cell to its initial values. * This method overrides the parent implementation. * It creates a checkbox inside the cell. * If the column is read-only or if the item is not in edit mode, * the checkbox will be set disabled. * @param TTableCell the cell to be initialized. * @param integer the index to the Columns property that the cell resides in. * @param string the type of cell (Header,Footer,Item,AlternatingItem,EditItem,SelectedItem) */ public function initializeCell($cell,$columnIndex,$itemType) { if($itemType===TListItemType::Item || $itemType===TListItemType::AlternatingItem || $itemType===TListItemType::SelectedItem || $itemType===TListItemType::EditItem) { $checkBox=new TCheckBox; if($this->getReadOnly() || $itemType!==TListItemType::EditItem) $checkBox->setEnabled(false); $cell->setHorizontalAlign('Center'); $cell->getControls()->add($checkBox); $cell->registerObject('CheckBox',$checkBox); if($this->getDataField()!=='') $checkBox->attachEventHandler('OnDataBinding',array($this,'dataBindColumn')); } else parent::initializeCell($cell,$columnIndex,$itemType); } /** * Databinds a cell in the column. * This method is invoked when datagrid performs databinding. * It populates the content of the cell with the relevant data from data source. */ public function dataBindColumn($sender,$param) { $item=$sender->getNamingContainer(); $data=$item->getData(); if(($field=$this->getDataField())!=='') $value=TPropertyValue::ensureBoolean($this->getDataFieldValue($data,$field)); else $value=TPropertyValue::ensureBoolean($data); if($sender instanceof TCheckBox) $sender->setChecked($value); } } ?>