From 42b59239cf0036ab096cc67ead335e3a81b1cdf4 Mon Sep 17 00:00:00 2001
From: xue <>
Date: Thu, 31 Aug 2006 19:37:08 +0000
Subject: Added TDropDownListColumn.
---
framework/Web/UI/WebControls/TDataBoundControl.php | 1 +
.../Web/UI/WebControls/TDropDownListColumn.php | 277 +++++++++++++++++++++
2 files changed, 278 insertions(+)
create mode 100644 framework/Web/UI/WebControls/TDropDownListColumn.php
(limited to 'framework')
diff --git a/framework/Web/UI/WebControls/TDataBoundControl.php b/framework/Web/UI/WebControls/TDataBoundControl.php
index 798f9155..38ed42dd 100644
--- a/framework/Web/UI/WebControls/TDataBoundControl.php
+++ b/framework/Web/UI/WebControls/TDataBoundControl.php
@@ -462,6 +462,7 @@ abstract class TDataBoundControl extends TWebControl
/**
* Validates if the parameter is a valid data source.
* If it is a string or an array, it will be converted as a TList object.
+ * @param Traversable|array|string data source to be validated
* @return Traversable the data that is traversable
* @throws TInvalidDataTypeException if the data is neither null nor Traversable
*/
diff --git a/framework/Web/UI/WebControls/TDropDownListColumn.php b/framework/Web/UI/WebControls/TDropDownListColumn.php
new file mode 100644
index 00000000..f5f08fd9
--- /dev/null
+++ b/framework/Web/UI/WebControls/TDropDownListColumn.php
@@ -0,0 +1,277 @@
+
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright © 2006 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI.WebControls
+ */
+
+Prado::using('System.Web.UI.WebControls.TDataGridColumn');
+Prado::using('System.Web.UI.WebControls.TDropDownList');
+
+/**
+ * TDropDownListColumn class
+ *
+ * TDropDownListColumn represents a column that is bound to a field in a data source.
+ * The cells in the column will be displayed using the data indexed by
+ * {@link setDataField DataField}. You can customize the display by
+ * setting {@link setDataFormatString DataFormatString}.
+ *
+ * If {@link setReadOnly ReadOnly} is false, TDropDownListColumn will display cells in edit mode
+ * with dropdown lists. Otherwise, a static text is displayed.
+ *
+ * There are two approaches to specify the list items available for selection.
+ * The first approach uses template syntax as follows,
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ * The second approach specifies a data source to be bound to the dropdown lists
+ * by setting {@link setListDataSource ListDataSource}. Like generic list controls,
+ * you may also want to specify which data fields are used for item values and texts
+ * by setting {@link setListValueField ListValueField} and
+ * {@link setListTextField ListTextField}, respectively.
+ * Furthermore, the item texts may be formatted by using {@link setListTextFormatString ListTextFormatString}.
+ * Note, if you specify {@link setListDataSource ListDataSource}, do it before
+ * calling the datagrid's dataBind().
+ *
+ * @author Qiang Xue
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI.WebControls
+ * @since 3.0.4
+ */
+class TDropDownListColumn extends TDataGridColumn
+{
+ private $_stateLoaded=false;
+ private $_dataBound=false;
+ private $_listControl=null;
+
+ public function __construct()
+ {
+ $this->_listControl=new TDropDownList;
+ }
+
+ /**
+ * Loads items from viewstate.
+ * This method overrides the parent implementation by loading list items
+ * @param mixed state values
+ */
+ public function loadState($state)
+ {
+ parent::loadState($state);
+ $this->_stateLoaded=true;
+ if(!$this->_dataBound)
+ $this->_listControl->getItems()->loadState($this->getViewState('Items',null));
+ }
+
+ /**
+ * Saves items into viewstate.
+ * This method overrides the parent implementation by saving list items
+ */
+ public function saveState()
+ {
+ $this->setViewState('Items',$this->_listControl->getItems()->saveState(),null);
+ return parent::saveState();
+ }
+
+ /**
+ * Adds object parsed from template to the control.
+ * This method adds only {@link TListItem} objects into the {@link getItems Items} collection.
+ * All other objects are ignored.
+ * @param mixed object parsed from template
+ */
+ public function addParsedObject($object)
+ {
+ // Do not add items from template if items are loaded from viewstate
+ if(!$this->_stateLoaded && ($object instanceof TListItem))
+ {
+ $object->setSelected(false);
+ $index=$this->_listControl->getItems()->add($object);
+ }
+ }
+
+ /**
+ * @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 string the formatting string used to control how the bound data will be displayed.
+ */
+ public function getDataFormatString()
+ {
+ return $this->getViewState('DataFormatString','');
+ }
+
+ /**
+ * @param string the formatting string used to control how the bound data will be displayed.
+ */
+ public function setDataFormatString($value)
+ {
+ $this->setViewState('DataFormatString',$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);
+ }
+
+ /**
+ * @return Traversable data source to be bound to the dropdown list boxes.
+ */
+ public function getListDataSource()
+ {
+ return $this->_listControl->getDataSource();
+ }
+
+ /**
+ * @param Traversable|array|string data source to be bound to the dropdown list boxes.
+ */
+ public function setListDataSource($value)
+ {
+ $this->_listControl->setDataSource($value);
+ }
+
+ /**
+ * @return string the data field used to populate the values of the dropdown list items. Defaults to empty.
+ */
+ public function getListValueField()
+ {
+ return $this->getViewState('ListValueField','');
+ }
+
+ /**
+ * @param string the data field used to populate the values of the dropdown list items
+ */
+ public function setListValueField($value)
+ {
+ $this->setViewState('ListValueField',$value,'');
+ }
+
+ /**
+ * @return string the data field used to populate the texts of the dropdown list items. Defaults to empty.
+ */
+ public function getListTextField()
+ {
+ return $this->getViewState('ListTextField','');
+ }
+
+ /**
+ * @param string the data field used to populate the texts of the dropdown list items
+ */
+ public function setListTextField($value)
+ {
+ $this->setViewState('ListTextField',$value,'');
+ }
+
+ /**
+ * @return string the formatting string used to control how the list item texts will be displayed.
+ */
+ public function getListTextFormatString()
+ {
+ return $this->getViewState('ListTextFormatString','');
+ }
+
+ /**
+ * @param string the formatting string used to control how the list item texts will be displayed.
+ */
+ public function setListTextFormatString($value)
+ {
+ $this->setViewState('ListTextFormatString',$value,'');
+ }
+
+ /**
+ * Initializes the specified cell to its initial values.
+ * This method overrides the parent implementation.
+ * It creates a textbox for item in edit mode and the column is not read-only.
+ * Otherwise it displays a static text.
+ * The caption of the button and the static text are retrieved
+ * from the datasource.
+ * @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,$itemType)
+ {
+ parent::initializeCell($cell,$columnIndex,$itemType);
+ if(!$this->_dataBound && $this->_listControl->getDataSource()!==null)
+ {
+ $this->_listControl->setDataTextField($this->getListTextField());
+ $this->_listControl->setDataValueField($this->getListValueField());
+ $this->_listControl->setDataTextFormatString($this->getListTextFormatString());
+ $this->_listControl->dataBind();
+ $this->_dataBound=true;
+ }
+ switch($itemType)
+ {
+ case TDataGrid::IT_EDITITEM:
+ if(!$this->getReadOnly())
+ {
+ $listControl=clone $this->_listControl;
+ $cell->getControls()->add($listControl);
+ $cell->registerObject('DropDownList',$listControl);
+ $control=$listControl;
+ }
+ else
+ $control=$cell;
+ $control->attachEventHandler('OnDataBinding',array($this,'dataBindColumn'));
+ break;
+ case TDataGrid::IT_ITEM:
+ case TDataGrid::IT_ALTERNATINGITEM:
+ case TDataGrid::IT_SELECTEDITEM:
+ if($this->getDataField()!=='')
+ $cell->attachEventHandler('OnDataBinding',array($this,'dataBindColumn'));
+ break;
+ }
+ }
+
+ /**
+ * 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->getDataItem();
+ if(($field=$this->getDataField())!=='')
+ $data=$this->getDataFieldValue($data,$field);
+ $formatString=$this->getDataFormatString();
+ $value=$this->formatDataValue($formatString,$data);
+ if($sender instanceof TTableCell)
+ $sender->setText($value);
+ else if($sender instanceof TDropDownList)
+ $sender->setSelectedValue($data);
+ }
+}
+
+?>
\ No newline at end of file
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