From 0054751b4abbb98faf378c8d0517a22be14b6c96 Mon Sep 17 00:00:00 2001
From: xue <>
Date: Wed, 21 Jun 2006 01:02:05 +0000
Subject: Fixed #230.

---
 framework/Web/UI/WebControls/TDataList.php | 61 +++++++++++++++++++++++++++---
 1 file changed, 56 insertions(+), 5 deletions(-)

(limited to 'framework')

diff --git a/framework/Web/UI/WebControls/TDataList.php b/framework/Web/UI/WebControls/TDataList.php
index b2bd9229..be1a9130 100644
--- a/framework/Web/UI/WebControls/TDataList.php
+++ b/framework/Web/UI/WebControls/TDataList.php
@@ -115,6 +115,7 @@ class TDataList extends TBaseDataList implements INamingContainer, IRepeatInfoUs
 	 * @var Itemplate various item templates
 	 */
 	private $_itemTemplate=null;
+	private $_emptyTemplate=null;
 	private $_alternatingItemTemplate=null;
 	private $_selectedItemTemplate=null;
 	private $_editItemTemplate=null;
@@ -362,6 +363,39 @@ class TDataList extends TBaseDataList implements INamingContainer, IRepeatInfoUs
 		return $this->_footer;
 	}
 
+	/**
+	 * @return ITemplate the template applied when no data is bound to the datalist
+	 */
+	public function getEmptyTemplate()
+	{
+		return $this->_emptyTemplate;
+	}
+
+	/**
+	 * @param ITemplate the template applied when no data is bound to the datalist
+	 * @throws TInvalidDataTypeException if the input is not an {@link ITemplate} or not null.
+	 */
+	public function setEmptyTemplate($value)
+	{
+		if($value instanceof ITemplate || $value===null)
+			$this->_emptyTemplate=$value;
+		else
+			throw new TInvalidDataTypeException('datalist_template_required','EmptyTemplate');
+	}
+
+	/**
+	 * @return TStyle the style for the content representing no data is bounded.
+	 */
+	public function getEmptyStyle()
+	{
+		if(($style=$this->getViewState('EmptyStyle',null))===null)
+		{
+			$style=new TStyle;
+			$this->setViewState('EmptyStyle',$style,null);
+		}
+		return $style;
+	}
+
 	/**
 	 * @return ITemplate the separator template
 	 */
@@ -935,6 +969,7 @@ class TDataList extends TBaseDataList implements INamingContainer, IRepeatInfoUs
 
 		$headerStyle=$this->getViewState('HeaderStyle',null);
 		$footerStyle=$this->getViewState('FooterStyle',null);
+		$emptyStyle=$this->getViewState('EmptyStyle',null);
 		$separatorStyle=$this->getViewState('SeparatorStyle',null);
 
 		foreach($this->getControls() as $index=>$item)
@@ -949,6 +984,10 @@ class TDataList extends TBaseDataList implements INamingContainer, IRepeatInfoUs
 					if($footerStyle)
 						$item->getStyle()->mergeWith($footerStyle);
 					break;
+				case 'Empty':
+					if($emptyStyle)
+						$item->getStyle()->mergeWith($emptyStyle);
+					break;
 				case 'Separator':
 					if($separatorStyle)
 						$item->getStyle()->mergeWith($separatorStyle);
@@ -1012,6 +1051,9 @@ class TDataList extends TBaseDataList implements INamingContainer, IRepeatInfoUs
 			case 'Footer':
 				$template=$this->_footerTemplate;
 				break;
+			case 'Empty':
+				$template=$this->_emptyTemplate;
+				break;
 			case 'Item':
 				$template=$this->_itemTemplate;
 				break;
@@ -1109,6 +1151,8 @@ class TDataList extends TBaseDataList implements INamingContainer, IRepeatInfoUs
 			if($this->_footerTemplate!==null)
 				$this->_footer=$this->createItemInternal(-1,'Footer',false,null);
 		}
+		else if($this->_emptyTemplate!==null)
+			$this->createItemInternal(-1,'Empty',false,null);
 		$this->clearChildState();
 	}
 
@@ -1150,6 +1194,8 @@ class TDataList extends TBaseDataList implements INamingContainer, IRepeatInfoUs
 		}
 		if($itemIndex>0 && $this->_footerTemplate!==null)
 			$this->_footer=$this->createItemInternal(-1,'Footer',true,null);
+		if($itemIndex===0 && $this->_emptyTemplate!==null)
+			$this->createItemInternal(-1,'Empty',true,null);
 		$this->setViewState('ItemCount',$itemIndex,0);
 	}
 
@@ -1163,8 +1209,13 @@ class TDataList extends TBaseDataList implements INamingContainer, IRepeatInfoUs
 		if($this->getHasControls())
 		{
 			$this->applyItemStyles();
-			$repeatInfo=$this->getRepeatInfo();
-			$repeatInfo->renderRepeater($writer,$this);
+			if($this->getItemCount()===0 && $this->_emptyTemplate!==null)
+				parent::render($writer);
+			else
+			{
+				$repeatInfo=$this->getRepeatInfo();
+				$repeatInfo->renderRepeater($writer,$this);
+			}
 		}
 	}
 }
@@ -1317,7 +1368,7 @@ class TDataListItem extends TWebControl implements INamingContainer
 	}
 
 	/**
-	 * @return string item type, can be 'Header','Footer','Item','AlternatingItem','SelectedItem','EditItem','Separator','Pager'
+	 * @return string item type
 	 */
 	public function getItemType()
 	{
@@ -1325,11 +1376,11 @@ class TDataListItem extends TWebControl implements INamingContainer
 	}
 
 	/**
-	 * @param mixed data to be associated with the item
+	 * @param string item type. Valid values include 'Header','Footer','Empty','Item','AlternatingItem','SelectedItem','EditItem','Separator','Pager'.
 	 */
 	public function setItemType($value)
 	{
-		$this->_itemType=TPropertyValue::ensureEnum($value,'Header','Footer','Item','AlternatingItem','SelectedItem','EditItem','Separator','Pager');
+		$this->_itemType=TPropertyValue::ensureEnum($value,'Header','Footer','Empty','Item','AlternatingItem','SelectedItem','EditItem','Separator','Pager');
 	}
 
 	/**
-- 
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