diff options
Diffstat (limited to 'framework')
-rw-r--r-- | framework/Web/UI/ActiveControls/TActivePageAdapter.php | 738 |
1 files changed, 369 insertions, 369 deletions
diff --git a/framework/Web/UI/ActiveControls/TActivePageAdapter.php b/framework/Web/UI/ActiveControls/TActivePageAdapter.php index ea5d673b..4baa35fa 100644 --- a/framework/Web/UI/ActiveControls/TActivePageAdapter.php +++ b/framework/Web/UI/ActiveControls/TActivePageAdapter.php @@ -1,370 +1,370 @@ -<?php
-/**
- * TActivePageAdapter, TCallbackErrorHandler and TInvalidCallbackException class file.
- *
- * @author Wei Zhuo <weizhuo[at]gamil[dot]com>
- * @link http://www.pradosoft.com/
- * @copyright Copyright © 2005 PradoSoft
- * @license http://www.pradosoft.com/license/
- * @version $Id$
- * @package System.Web.UI.ActiveControls
- */
-
-/**
- * Load callback response adapter class.
- */
-Prado::using('System.Web.UI.ActiveControls.TCallbackResponseAdapter');
-Prado::using('System.Web.UI.ActiveControls.TCallbackClientScript');
-Prado::using('System.Web.UI.ActiveControls.TCallbackEventParameter');
-
-/**
- * TActivePageAdapter class.
- *
- * Callback request handler.
- *
- * @author Wei Zhuo <weizhuo[at]gamil[dot]com>
- * @version $Id$
- * @package System.Web.UI.ActiveControls
- * @since 3.1
- */
-class TActivePageAdapter extends TControlAdapter
-{
- /**
- * Callback response data header name.
- */
- const CALLBACK_DATA_HEADER = 'X-PRADO-DATA';
- /**
- * Callback response client-side action header name.
- */
- const CALLBACK_ACTION_HEADER = 'X-PRADO-ACTIONS';
- /**
- * Callback error header name.
- */
- const CALLBACK_ERROR_HEADER = 'X-PRADO-ERROR';
- /**
- * Callback page state header name.
- */
- const CALLBACK_PAGESTATE_HEADER = 'X-PRADO-PAGESTATE';
-
- /**
- * Callback redirect url header name.
- */
- const CALLBACK_REDIRECT = 'X-PRADO-REDIRECT';
-
- /**
- * @var ICallbackEventHandler callback event handler.
- */
- private $_callbackEventTarget;
- /**
- * @var mixed callback event parameter.
- */
- private $_callbackEventParameter;
- /**
- * @var TCallbackClientScript callback client script handler
- */
- private $_callbackClient;
-
- private $_controlsToRender=array();
-
- /**
- * Constructor, trap errors and exception to let the callback response
- * handle them.
- */
- public function __construct(TPage $control)
- {
- parent::__construct($control);
-
- //TODO: can this be done later?
- $response = $this->getApplication()->getResponse();
- $response->setAdapter(new TCallbackResponseAdapter($response));
-
- $this->trapCallbackErrorsExceptions();
- }
-
- /**
- * Process the callback request.
- * @param THtmlWriter html content writer.
- */
- public function processCallbackEvent($writer)
- {
- Prado::trace("ActivePage raiseCallbackEvent()",'System.Web.UI.ActiveControls.TActivePageAdapter');
- $this->raiseCallbackEvent();
- }
-
- /**
- * Register a control for defered render() call.
- * @param TControl control for defered rendering
- * @param THtmlWriter the renderer
- */
- public function registerControlToRender($control,$writer)
- {
- $id = $control->getUniqueID();
- if(!isset($this->_controlsToRender[$id]))
- $this->_controlsToRender[$id] = array($control,$writer);
- }
-
- /**
- * Trap errors and exceptions to be handled by TCallbackErrorHandler.
- */
- protected function trapCallbackErrorsExceptions()
- {
- $this->getApplication()->setErrorHandler(new TCallbackErrorHandler);
- }
-
- /**
- * Render the callback response.
- * @param THtmlWriter html content writer.
- */
- public function renderCallbackResponse($writer)
- {
- Prado::trace("ActivePage renderCallbackResponse()",'System.Web.UI.ActiveControls.TActivePageAdapter');
- if(($url = $this->getResponse()->getAdapter()->getRedirectedUrl())===null)
- $this->renderResponse($writer);
- else
- $this->redirect($url);
- }
-
- /**
- * Redirect url on the client-side using javascript.
- * @param string new url to load.
- */
- protected function redirect($url)
- {
- if(!$this->getApplication()->getRequestCompleted())
- $this->getApplication()->onEndRequest();
- $this->appendContentPart($this->getResponse(), self::CALLBACK_REDIRECT, $url);
- //$this->getResponse()->appendHeader(self::CALLBACK_REDIRECT.': '.$url);
- }
-
- /**
- * Renders the callback response by adding additional callback data and
- * javascript actions in the header and page state if required.
- * @param THtmlWriter html content writer.
- */
- protected function renderResponse($writer)
- {
- //renders all the defered render() calls.
- foreach($this->_controlsToRender as $rid => $forRender)
- $forRender[0]->render($forRender[1]);
-
- $response = $this->getResponse();
-
- //send response data in header
- if($response->getHasAdapter())
- {
- $responseData = $response->getAdapter()->getResponseData();
- if(!is_null($responseData))
- {
- $data = TJavascript::jsonEncode($responseData);
-
- $this->appendContentPart($response, self::CALLBACK_DATA_HEADER, $data);
- //$response->appendHeader(self::CALLBACK_DATA_HEADER.': '.$data);
- }
- }
-
- //sends page state in header
- if(($handler = $this->getCallbackEventTarget()) !== null)
- {
- if($handler->getActiveControl()->getClientSide()->getEnablePageStateUpdate())
- {
- $pagestate = $this->getPage()->getClientState();
- $this->appendContentPart($response, self::CALLBACK_PAGESTATE_HEADER, $pagestate);
- //$response->appendHeader(self::CALLBACK_PAGESTATE_HEADER.': '.$pagestate);
- }
- }
-
- //safari must receive at least 1 byte of data.
- $writer->write(" ");
-
- //output the end javascript
- if($this->getPage()->getClientScript()->hasEndScripts())
- {
- $writer = $response->createHtmlWriter();
- $this->getPage()->getClientScript()->renderEndScripts($writer);
- $this->getPage()->getCallbackClient()->evaluateScript($writer);
- }
-
- //output the actions
- $executeJavascript = $this->getCallbackClientHandler()->getClientFunctionsToExecute();
- $actions = TJavascript::jsonEncode($executeJavascript);
- $this->appendContentPart($response, self::CALLBACK_ACTION_HEADER, $actions);
- //$response->appendHeader(self::CALLBACK_ACTION_HEADER.': '.$actions);
- }
-
- /**
- * Appends data or javascript code to the body content surrounded with delimiters
- */
- private function appendContentPart($response, $delimiter, $data)
- {
- $content = $response->createHtmlWriter();
- $content->getWriter()->setBoundary($delimiter);
- $content->write($data);
- }
-
- /**
- * Trys to find the callback event handler and raise its callback event.
- * @throws TInvalidCallbackException if call back target is not found.
- * @throws TInvalidCallbackException if the requested target does not
- * implement ICallbackEventHandler.
- */
- private function raiseCallbackEvent()
- {
- if(($callbackHandler=$this->getCallbackEventTarget())!==null)
- {
- if($callbackHandler instanceof ICallbackEventHandler)
- {
- $param = $this->getCallbackEventParameter();
- $result = new TCallbackEventParameter($this->getResponse(), $param);
- $callbackHandler->raiseCallbackEvent($result);
- }
- else
- {
- throw new TInvalidCallbackException(
- 'callback_invalid_handler', $callbackHandler->getUniqueID());
- }
- }
- else
- {
- $target = $this->getRequest()->itemAt(TPage::FIELD_CALLBACK_TARGET);
- throw new TInvalidCallbackException('callback_invalid_target', $target);
- }
- }
-
- /**
- * @return TControl the control responsible for the current callback event,
- * null if nonexistent
- */
- public function getCallbackEventTarget()
- {
- if($this->_callbackEventTarget===null)
- {
- $eventTarget=$this->getRequest()->itemAt(TPage::FIELD_CALLBACK_TARGET);
- if(!empty($eventTarget))
- $this->_callbackEventTarget=$this->getPage()->findControl($eventTarget);
- }
- return $this->_callbackEventTarget;
- }
-
- /**
- * Registers a control to raise callback event in the current request.
- * @param TControl control registered to raise callback event.
- */
- public function setCallbackEventTarget(TControl $control)
- {
- $this->_callbackEventTarget=$control;
- }
-
- /**
- * Gets callback parameter. JSON encoding is assumed.
- * @return string postback event parameter
- */
- public function getCallbackEventParameter()
- {
- if($this->_callbackEventParameter===null)
- {
- $param = $this->getRequest()->itemAt(TPage::FIELD_CALLBACK_PARAMETER);
- if(strlen($param) > 0)
- $this->_callbackEventParameter=TJavascript::jsonDecode((string)$param);
- }
- return $this->_callbackEventParameter;
- }
-
- /**
- * @param mixed postback event parameter
- */
- public function setCallbackEventParameter($value)
- {
- $this->_callbackEventParameter=$value;
- }
-
- /**
- * Gets the callback client script handler. It handlers the javascript functions
- * to be executed during the callback response.
- * @return TCallbackClientScript callback client handler.
- */
- public function getCallbackClientHandler()
- {
- if(is_null($this->_callbackClient))
- $this->_callbackClient = new TCallbackClientScript;
- return $this->_callbackClient;
- }
-}
-
-/**
- * TCallbackErrorHandler class.
- *
- * Captures errors and exceptions and send them back during callback response.
- * When the application is in debug mode, the error and exception stack trace
- * are shown. A TJavascriptLogger must be present on the client-side to view
- * the error stack trace.
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Id$
- * @package System.Web.UI.ActiveControls
- * @since 3.1
- */
-class TCallbackErrorHandler extends TErrorHandler
-{
- /**
- * Displays the exceptions to the client-side TJavascriptLogger.
- * A HTTP 500 status code is sent and the stack trace is sent as JSON encoded.
- * @param Exception exception details.
- */
- protected function displayException($exception)
- {
- if($this->getApplication()->getMode()===TApplication::STATE_DEBUG)
- {
- $response = $this->getApplication()->getResponse();
- $trace = TJavascript::jsonEncode($this->getExceptionStackTrace($exception));
- $response->appendHeader('HTTP/1.0 500 Internal Error');
- $response->appendHeader(TActivePageAdapter::CALLBACK_ERROR_HEADER.': '.$trace);
- }
- else
- {
- error_log("Error happened while processing an existing error:\n".$exception->__toString());
- header('HTTP/1.0 500 Internal Error');
- }
- $this->getApplication()->getResponse()->flush();
- }
-
- /**
- * @param Exception exception details.
- * @return array exception stack trace details.
- */
- private function getExceptionStackTrace($exception)
- {
- $data['code']=$exception->getCode() > 0 ? $exception->getCode() : 500;
- $data['file']=$exception->getFile();
- $data['line']=$exception->getLine();
- $data['trace']=$exception->getTrace();
- if($exception instanceof TPhpErrorException)
- {
- // if PHP exception, we want to show the 2nd stack level context
- // because the 1st stack level is of little use (it's in error handler)
- if(isset($trace[0]) && isset($trace[0]['file']) && isset($trace[0]['line']))
- {
- $data['file']=$trace[0]['file'];
- $data['line']=$trace[0]['line'];
- }
- }
- $data['type']=get_class($exception);
- $data['message']=$exception->getMessage();
- $data['version']=$_SERVER['SERVER_SOFTWARE'].' '.Prado::getVersion();
- $data['time']=@strftime('%Y-%m-%d %H:%M',time());
- return $data;
- }
-}
-
-/**
- * TInvalidCallbackException class.
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Id$
- * @package System.Web.UI.ActiveControls
- * @since 3.1
- */
-class TInvalidCallbackException extends TException
-{
-}
-
+<?php +/** + * TActivePageAdapter, TCallbackErrorHandler and TInvalidCallbackException class file. + * + * @author Wei Zhuo <weizhuo[at]gamil[dot]com> + * @link http://www.pradosoft.com/ + * @copyright Copyright © 2005 PradoSoft + * @license http://www.pradosoft.com/license/ + * @version $Id$ + * @package System.Web.UI.ActiveControls + */ + +/** + * Load callback response adapter class. + */ +Prado::using('System.Web.UI.ActiveControls.TCallbackResponseAdapter'); +Prado::using('System.Web.UI.ActiveControls.TCallbackClientScript'); +Prado::using('System.Web.UI.ActiveControls.TCallbackEventParameter'); + +/** + * TActivePageAdapter class. + * + * Callback request handler. + * + * @author Wei Zhuo <weizhuo[at]gamil[dot]com> + * @version $Id$ + * @package System.Web.UI.ActiveControls + * @since 3.1 + */ +class TActivePageAdapter extends TControlAdapter +{ + /** + * Callback response data header name. + */ + const CALLBACK_DATA_HEADER = 'X-PRADO-DATA'; + /** + * Callback response client-side action header name. + */ + const CALLBACK_ACTION_HEADER = 'X-PRADO-ACTIONS'; + /** + * Callback error header name. + */ + const CALLBACK_ERROR_HEADER = 'X-PRADO-ERROR'; + /** + * Callback page state header name. + */ + const CALLBACK_PAGESTATE_HEADER = 'X-PRADO-PAGESTATE'; + + /** + * Callback redirect url header name. + */ + const CALLBACK_REDIRECT = 'X-PRADO-REDIRECT'; + + /** + * @var ICallbackEventHandler callback event handler. + */ + private $_callbackEventTarget; + /** + * @var mixed callback event parameter. + */ + private $_callbackEventParameter; + /** + * @var TCallbackClientScript callback client script handler + */ + private $_callbackClient; + + private $_controlsToRender=array(); + + /** + * Constructor, trap errors and exception to let the callback response + * handle them. + */ + public function __construct(TPage $control) + { + parent::__construct($control); + + //TODO: can this be done later? + $response = $this->getApplication()->getResponse(); + $response->setAdapter(new TCallbackResponseAdapter($response)); + + $this->trapCallbackErrorsExceptions(); + } + + /** + * Process the callback request. + * @param THtmlWriter html content writer. + */ + public function processCallbackEvent($writer) + { + Prado::trace("ActivePage raiseCallbackEvent()",'System.Web.UI.ActiveControls.TActivePageAdapter'); + $this->raiseCallbackEvent(); + } + + /** + * Register a control for defered render() call. + * @param TControl control for defered rendering + * @param THtmlWriter the renderer + */ + public function registerControlToRender($control,$writer) + { + $id = $control->getUniqueID(); + if(!isset($this->_controlsToRender[$id])) + $this->_controlsToRender[$id] = array($control,$writer); + } + + /** + * Trap errors and exceptions to be handled by TCallbackErrorHandler. + */ + protected function trapCallbackErrorsExceptions() + { + $this->getApplication()->setErrorHandler(new TCallbackErrorHandler); + } + + /** + * Render the callback response. + * @param THtmlWriter html content writer. + */ + public function renderCallbackResponse($writer) + { + Prado::trace("ActivePage renderCallbackResponse()",'System.Web.UI.ActiveControls.TActivePageAdapter'); + if(($url = $this->getResponse()->getAdapter()->getRedirectedUrl())===null) + $this->renderResponse($writer); + else + $this->redirect($url); + } + + /** + * Redirect url on the client-side using javascript. + * @param string new url to load. + */ + protected function redirect($url) + { + Prado::trace("ActivePage redirect()",'System.Web.UI.ActiveControls.TActivePageAdapter'); + $this->appendContentPart($this->getResponse(), self::CALLBACK_REDIRECT, $url); + //$this->getResponse()->appendHeader(self::CALLBACK_REDIRECT.': '.$url); + } + + /** + * Renders the callback response by adding additional callback data and + * javascript actions in the header and page state if required. + * @param THtmlWriter html content writer. + */ + protected function renderResponse($writer) + { + Prado::trace("ActivePage renderResponse()",'System.Web.UI.ActiveControls.TActivePageAdapter'); + //renders all the defered render() calls. + foreach($this->_controlsToRender as $rid => $forRender) + $forRender[0]->render($forRender[1]); + + $response = $this->getResponse(); + + //send response data in header + if($response->getHasAdapter()) + { + $responseData = $response->getAdapter()->getResponseData(); + if(!is_null($responseData)) + { + $data = TJavascript::jsonEncode($responseData); + + $this->appendContentPart($response, self::CALLBACK_DATA_HEADER, $data); + //$response->appendHeader(self::CALLBACK_DATA_HEADER.': '.$data); + } + } + + //sends page state in header + if(($handler = $this->getCallbackEventTarget()) !== null) + { + if($handler->getActiveControl()->getClientSide()->getEnablePageStateUpdate()) + { + $pagestate = $this->getPage()->getClientState(); + $this->appendContentPart($response, self::CALLBACK_PAGESTATE_HEADER, $pagestate); + //$response->appendHeader(self::CALLBACK_PAGESTATE_HEADER.': '.$pagestate); + } + } + + //safari must receive at least 1 byte of data. + $writer->write(" "); + + //output the end javascript + if($this->getPage()->getClientScript()->hasEndScripts()) + { + $writer = $response->createHtmlWriter(); + $this->getPage()->getClientScript()->renderEndScripts($writer); + $this->getPage()->getCallbackClient()->evaluateScript($writer); + } + + //output the actions + $executeJavascript = $this->getCallbackClientHandler()->getClientFunctionsToExecute(); + $actions = TJavascript::jsonEncode($executeJavascript); + $this->appendContentPart($response, self::CALLBACK_ACTION_HEADER, $actions); + //$response->appendHeader(self::CALLBACK_ACTION_HEADER.': '.$actions); + } + + /** + * Appends data or javascript code to the body content surrounded with delimiters + */ + private function appendContentPart($response, $delimiter, $data) + { + $content = $response->createHtmlWriter(); + $content->getWriter()->setBoundary($delimiter); + $content->write($data); + } + + /** + * Trys to find the callback event handler and raise its callback event. + * @throws TInvalidCallbackException if call back target is not found. + * @throws TInvalidCallbackException if the requested target does not + * implement ICallbackEventHandler. + */ + private function raiseCallbackEvent() + { + if(($callbackHandler=$this->getCallbackEventTarget())!==null) + { + if($callbackHandler instanceof ICallbackEventHandler) + { + $param = $this->getCallbackEventParameter(); + $result = new TCallbackEventParameter($this->getResponse(), $param); + $callbackHandler->raiseCallbackEvent($result); + } + else + { + throw new TInvalidCallbackException( + 'callback_invalid_handler', $callbackHandler->getUniqueID()); + } + } + else + { + $target = $this->getRequest()->itemAt(TPage::FIELD_CALLBACK_TARGET); + throw new TInvalidCallbackException('callback_invalid_target', $target); + } + } + + /** + * @return TControl the control responsible for the current callback event, + * null if nonexistent + */ + public function getCallbackEventTarget() + { + if($this->_callbackEventTarget===null) + { + $eventTarget=$this->getRequest()->itemAt(TPage::FIELD_CALLBACK_TARGET); + if(!empty($eventTarget)) + $this->_callbackEventTarget=$this->getPage()->findControl($eventTarget); + } + return $this->_callbackEventTarget; + } + + /** + * Registers a control to raise callback event in the current request. + * @param TControl control registered to raise callback event. + */ + public function setCallbackEventTarget(TControl $control) + { + $this->_callbackEventTarget=$control; + } + + /** + * Gets callback parameter. JSON encoding is assumed. + * @return string postback event parameter + */ + public function getCallbackEventParameter() + { + if($this->_callbackEventParameter===null) + { + $param = $this->getRequest()->itemAt(TPage::FIELD_CALLBACK_PARAMETER); + if(strlen($param) > 0) + $this->_callbackEventParameter=TJavascript::jsonDecode((string)$param); + } + return $this->_callbackEventParameter; + } + + /** + * @param mixed postback event parameter + */ + public function setCallbackEventParameter($value) + { + $this->_callbackEventParameter=$value; + } + + /** + * Gets the callback client script handler. It handlers the javascript functions + * to be executed during the callback response. + * @return TCallbackClientScript callback client handler. + */ + public function getCallbackClientHandler() + { + if(is_null($this->_callbackClient)) + $this->_callbackClient = new TCallbackClientScript; + return $this->_callbackClient; + } +} + +/** + * TCallbackErrorHandler class. + * + * Captures errors and exceptions and send them back during callback response. + * When the application is in debug mode, the error and exception stack trace + * are shown. A TJavascriptLogger must be present on the client-side to view + * the error stack trace. + * + * @author Wei Zhuo <weizhuo[at]gmail[dot]com> + * @version $Id$ + * @package System.Web.UI.ActiveControls + * @since 3.1 + */ +class TCallbackErrorHandler extends TErrorHandler +{ + /** + * Displays the exceptions to the client-side TJavascriptLogger. + * A HTTP 500 status code is sent and the stack trace is sent as JSON encoded. + * @param Exception exception details. + */ + protected function displayException($exception) + { + if($this->getApplication()->getMode()===TApplication::STATE_DEBUG) + { + $response = $this->getApplication()->getResponse(); + $trace = TJavascript::jsonEncode($this->getExceptionStackTrace($exception)); + $response->appendHeader('HTTP/1.0 500 Internal Error'); + $response->appendHeader(TActivePageAdapter::CALLBACK_ERROR_HEADER.': '.$trace); + } + else + { + error_log("Error happened while processing an existing error:\n".$exception->__toString()); + header('HTTP/1.0 500 Internal Error'); + } + $this->getApplication()->getResponse()->flush(); + } + + /** + * @param Exception exception details. + * @return array exception stack trace details. + */ + private function getExceptionStackTrace($exception) + { + $data['code']=$exception->getCode() > 0 ? $exception->getCode() : 500; + $data['file']=$exception->getFile(); + $data['line']=$exception->getLine(); + $data['trace']=$exception->getTrace(); + if($exception instanceof TPhpErrorException) + { + // if PHP exception, we want to show the 2nd stack level context + // because the 1st stack level is of little use (it's in error handler) + if(isset($trace[0]) && isset($trace[0]['file']) && isset($trace[0]['line'])) + { + $data['file']=$trace[0]['file']; + $data['line']=$trace[0]['line']; + } + } + $data['type']=get_class($exception); + $data['message']=$exception->getMessage(); + $data['version']=$_SERVER['SERVER_SOFTWARE'].' '.Prado::getVersion(); + $data['time']=@strftime('%Y-%m-%d %H:%M',time()); + return $data; + } +} + +/** + * TInvalidCallbackException class. + * + * @author Wei Zhuo <weizhuo[at]gmail[dot]com> + * @version $Id$ + * @package System.Web.UI.ActiveControls + * @since 3.1 + */ +class TInvalidCallbackException extends TException +{ +} + ?>
\ No newline at end of file |