From 3d437d9dcd37dc901f53ca3322ba118851e3c676 Mon Sep 17 00:00:00 2001
From: xue <>
Date: Wed, 17 May 2006 21:24:40 +0000
Subject: Merge from 3.0 branch till 1073.

---
 framework/Web/UI/WebControls/TListControl.php | 58 ++++++++++++++++++---------
 1 file changed, 38 insertions(+), 20 deletions(-)

(limited to 'framework/Web/UI/WebControls/TListControl.php')

diff --git a/framework/Web/UI/WebControls/TListControl.php b/framework/Web/UI/WebControls/TListControl.php
index 1c7fe11b..f97eb307 100644
--- a/framework/Web/UI/WebControls/TListControl.php
+++ b/framework/Web/UI/WebControls/TListControl.php
@@ -182,7 +182,7 @@ abstract class TListControl extends TDataBoundControl
 		$textFormat=$this->getDataTextFormatString();
 		foreach($data as $key=>$object)
 		{
-			$item=new TListItem;
+			$item=$items->createListItem();
 			if(is_array($object) || is_object($object))
 			{
 				$text=TDataFieldAccessor::getDataFieldValue($object,$textField);
@@ -195,7 +195,6 @@ abstract class TListControl extends TDataBoundControl
 				$item->setValue("$key");
 			}
 			$item->setText($this->formatDataValue($textFormat,$text));
-			$items->add($item);
 		}
 		// SelectedValue or SelectedIndex may be set before databinding
 		// so we make them be effective now
@@ -215,6 +214,16 @@ abstract class TListControl extends TDataBoundControl
 		}
 	}
 
+	/**
+	 * Creates a collection object to hold list items.
+	 * This method may be overriden to create a customized collection.
+	 * @return TListItemCollection the collection object
+	 */
+	protected function createListItemCollection()
+	{
+		return new TListItemCollection;
+	}
+
 	/**
 	 * Saves items into viewstate.
 	 * This method is invoked right before control state is to be saved.
@@ -238,7 +247,7 @@ abstract class TListControl extends TDataBoundControl
 		$this->_stateLoaded=true;
 		if(!$this->getIsDataBound())
 		{
-			$this->_items=new TListItemCollection;
+			$this->_items=$this->createListItemCollection();
 			$this->_items->loadState($this->getViewState('Items',null));
 		}
 		$this->clearViewState('Items');
@@ -379,7 +388,7 @@ abstract class TListControl extends TDataBoundControl
 	public function getItems()
 	{
 		if(!$this->_items)
-			$this->_items=new TListItemCollection;
+			$this->_items=$this->createListItemCollection();
 		return $this->_items;
 	}
 
@@ -636,6 +645,23 @@ abstract class TListControl extends TDataBoundControl
  */
 class TListItemCollection extends TList
 {
+	/**
+	 * Creates a list item object.
+	 * This method may be overriden to provide a customized list item object.
+	 * @param integer index where the newly created item is to be inserted at.
+	 * If -1, the item will be appended to the end.
+	 * @return TListItem list item object
+	 */
+	public function createListItem($index=-1)
+	{
+		$item=new TListItem;
+		if($index<0)
+			$this->add($item);
+		else
+			$this->insertAt($index,$item);
+		return $item;
+	}
+
 	/**
 	 * Inserts an item into the collection.
 	 * @param integer the location where the item will be inserted.
@@ -645,10 +671,13 @@ class TListItemCollection extends TList
 	 */
 	public function insertAt($index,$item)
 	{
-		if(is_string($item))
-			parent::insertAt($index,new TListItem($item));
-		else if($item instanceof TListItem)
+		if($item instanceof TListItem)
 			parent::insertAt($index,$item);
+		else if(is_string($item))
+		{
+			$item=$this->createListItem($index);
+			$item->setText($item);
+		}
 		else
 			throw new TInvalidDataTypeException('listitemcollection_item_invalid',get_class($this));
 	}
@@ -728,10 +757,7 @@ class TListItemCollection extends TList
 	{
 		$this->clear();
 		if($state!==null)
-		{
-			foreach($state as $item)
-				$this->add(new TListItem($item[0],$item[1],$item[2],$item[3]));
-		}
+			$this->copyFrom($state);
 	}
 
 	/**
@@ -741,15 +767,7 @@ class TListItemCollection extends TList
 	 */
 	public function saveState()
 	{
-		if($this->getCount()>0)
-		{
-			$state=array();
-			foreach($this as $item)
-				$state[]=array($item->getText(),$item->getValue(),$item->getEnabled(),$item->getSelected());
-			return $state;
-		}
-		else
-			return null;
+		return ($this->getCount()>0) ? $this->toArray() : null;
 	}
 }
 
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