2 files changed, 45 insertions, 5 deletions
diff --git a/framework/Web/UI/WebControls/TBaseValidator.php b/framework/Web/UI/WebControls/TBaseValidator.php
index 1194089e..a0801d4c 100644
--- a/framework/Web/UI/WebControls/TBaseValidator.php
+++ b/framework/Web/UI/WebControls/TBaseValidator.php
@@ -124,7 +124,8 @@ abstract class TBaseValidator extends TLabel implements IValidator
 	}
 
 	/**
-	 * Adds attributes to renderer.
+	 * Adds attributes to renderer. Calls parent implementation and renders the 
+	 * client control scripts.
 	 * @param THtmlWriter the renderer
 	 */
 	protected function addAttributesToRender($writer)
@@ -137,6 +138,7 @@ abstract class TBaseValidator extends TLabel implements IValidator
 			$writer->addStyleAttribute('visibility','hidden');
 		$writer->addAttribute('id',$this->getClientID());
 		parent::addAttributesToRender($writer);
+		$this->renderClientControlScript($writer);
 	}
 
 	/**
@@ -217,11 +219,10 @@ abstract class TBaseValidator extends TLabel implements IValidator
 	 * Renders the javascript code to the end script.
 	 * If you override this method, be sure to call the parent implementation
 	 * so that the event handlers can be invoked.
-	 * @param TEventParameter event parameter to be passed to the event handlers
+	 * @param THtmlWriter the renderer
 	 */
-	public function onPreRender($param)
+	public function renderClientControlScript($writer)
 	{
-		parent::onPreRender($param);
 		$scripts = $this->getPage()->getClientScript();
 		$formID=$this->getPage()->getForm()->getClientID();
 		$scriptKey = "TBaseValidator:$formID";
@@ -236,7 +237,7 @@ abstract class TBaseValidator extends TLabel implements IValidator
 			$this->registerClientScriptValidator();
 		$this->updateControlCssClass();
 	}
-
+	
 	/**
 	 * Update the ControlToValidate component's css class depending
 	 * if the ControlCssClass property is set, and whether this is valid.
diff --git a/framework/Web/UI/WebControls/TClientScript.php b/framework/Web/UI/WebControls/TClientScript.php
index 23aa1425..020b44b8 100644
--- a/framework/Web/UI/WebControls/TClientScript.php
+++ b/framework/Web/UI/WebControls/TClientScript.php
@@ -22,6 +22,11 @@
  * <com:TClientScript UsingPradoScripts="effects, rico" />
  * </code>
  * 
+ * The {@link setPreRenderControlTypes PreRenderControlTypes} property can
+ * be used to specify that controls type/class names that should pre-render itself
+ * even though they may not be rendered on the page. This is useful to publish
+ * controls that require assets and is only visible after a callback response.
+ * 
  * @TODO May be use it to include stylesheets as well.
  *
  * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
@@ -54,6 +59,23 @@ class TClientScript extends TControl
 	}
 	
 	/**
+	 * @param string comma delimited list of controls that wish to be prerendered 
+	 * so as to publish its assets.
+	 */
+	public function setPreRenderControlTypes($value)
+	{
+		$this->setViewState('PreRenderControls', $value);
+	}
+	
+	/**
+	 * @return string comma delimited list of controls types that require prerendering.
+	 */
+	public function getPreRenderControlTypes()
+	{
+		return $this->getViewState('PreRenderControls', '');
+	}
+	
+	/**
 	 * Calls the client script manager to add each of the requested client
 	 * script libraries.
 	 * @param mixed event parameter
@@ -69,6 +91,23 @@ class TClientScript extends TControl
 			if(strlen($script) > 0)
 				$cs->registerPradoScript($script);
 		}
+		$this->preRenderControls($param);
+	}
+	
+	/**
+	 * PreRender other controls to allow them to publish their assets. Useful
+	 * when callback response components that require assets to be present on the page.
+	 * @param mixed event paramater
+	 */
+	protected function preRenderControls($param)
+	{
+		$types = preg_split('/,|\s+/', $this->getPreRenderControlTypes());
+		foreach($types as $type)
+		{
+			$control = Prado::createComponent($type);
+			$control->setPage($this->getPage());
+			$control->onPreRender($param);
+		}		
 	}
 }