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<?php
/**
* TActiveClientScript class file
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @link https://github.com/pradosoft/prado
* @copyright Copyright © 2005-2016 The PRADO Group
* @license https://github.com/pradosoft/prado/blob/master/COPYRIGHT
* @package System.Web.UI.ActiveControls
*/
/**
* TActiveClientScript class
*
* This is the active counterpart of the {@link TClientScript} class.
*
* TActiveClientScript has the ability to render itself on ajax
* callbacks. This means that every variable or function declared in javascript
* code will be available to the page.
*
* Beware that when rendered on normal (postback) or ajax callbacks, some
* javascript code won't behave in the same way.
* When rendered as part of a normal/postback response, scripts will execute instantly
* where they are in the page and in a synchronous fashion.
* Instead, when they are rendered as part of a callback response,
* they will be executed when all DOM modifications are complete and any dynamic
* script file includes are loaded, out-of-band and practically all blocks at once,
* regardless of where they actually occour in the original template/markup code.
* This can potentially hurt compatibility and graceful fallback.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @package System.Web.UI.ActiveControls
* @since 3.2
*/
class TActiveClientScript extends TClientScript
{
/**
* Renders the custom script file.
* @param THtmLWriter the renderer
*/
protected function renderCustomScriptFile($writer)
{
if(($scriptUrl = $this->getScriptUrl())!=='')
{
if($this->getPage()->getIsCallback())
{
$cs = $this->getPage()->getClientScript();
$uniqueid=$this->ClientID.'_custom';
if(!$cs->isScriptFileRegistered($uniqueid))
$cs->registerScriptFile($uniqueid, $scriptUrl);
} else {
$writer->write("<script type=\"text/javascript\" src=\"$scriptUrl\"></script>\n");
}
}
}
/**
* Registers the body content as javascript.
* @param THtmlWriter the renderer
*/
protected function renderCustomScript($writer)
{
if($this->getHasControls())
{
if($this->getPage()->getIsCallback())
{
$extWriter= $this->getPage()->getResponse()->createHtmlWriter();
$extWriter->write("/*<![CDATA[*/\n");
$this->renderChildren($extWriter);
$extWriter->write("\n/*]]>*/");
$this->getPage()->getCallbackClient()->appendScriptBlock($extWriter);
} else {
$writer->write("<script type=\"text/javascript\">\n/*<![CDATA[*/\n");
$this->renderChildren($writer);
$writer->write("\n/*]]>*/\n</script>\n");
}
}
}
}
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