lifetype-1.2/class/view/view.class.php

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<?php

    lt_include( PLOG_CLASS_PATH."class/config/properties.class.php" );
        
        define( "TEXT_HTML_CONTENT_TYPE", "text/html" );
        define( "TEXT_XML_CONTENT_TYPE", "text/xml" );
        
        define( "DEFAULT_VIEW_CHARSET", "iso-8859-1" );
        
        define( "VIEW_DEFAULT_START_PAGE", 1 );
        
        define( "VIEW_DEFAULT_PAGE_PARAMETER", "page" );

        class View  
        {

                var $_params;
                var $_contentType;
                var $_headers;
                var $_charset;
                var $_request;

                function View()
        {
                        

            $this->_params = new Properties();
                        
                        // set a default content type and character set for responses
                        $this->_contentType = TEXT_HTML_CONTENT_TYPE;
                        $this->_charset = DEFAULT_VIEW_CHARSET;
                        $this->_headers = Array();
                        
                        // no form has caused any error when we initialize the view!
                        $this->setValue( "formIsError", false );
                        // and no form has caused any success yet either!
                        $this->setValue( "formIsSuccess", false );
                        
                        // let's send an HTTP 200 header response... If somebody wants to overwrite it later
                        // on, php should keep in mind that the valid one will be the last one so it is
                        // fine to do this more than once and twice
                        $this->addHeaderResponse( "HTTP/1.0 200 OK" );
                        
                        // initialize a request object, in case it is needed somewhere
                        $this->_request = new Request( HttpVars::getRequest());
        }

         function setValue( $name, $value )
         {
            //$this->_params[$name] = $value;
            $this->_params->setValue( $name, $value );
         }

         function getValue( $name )
         {
                return $this->_params->getValue( $name );
         }
                 
                function setContentType( $contentType )
                {
                        $this->_contentType = $contentType;
                }
                
                function setCharset( $charset )
                {
                        $this->_charset = $charset;
                }
                
                function addHeaderResponse( $headerString )
                {
                        array_push( $this->_headers, $headerString );
                        
                        return true;
                }
                
                function setHeaders( $headers = Array())
                {
                        $this->_headers = $headers;
                }
                
                function sendContentType()
                {
                        // build up the header and send it
                        $header = "Content-Type: ".$this->_contentType.";charset=".$this->_charset;
                        header( $header );
                                
                        return true;
                }
                
                function setErrorMessage( $message )
                {
                        $this->setValue( "viewErrorMessage", $message );
                        $this->setError( true );
                        
                        return true;
                }
                
                function setError( $error = true )
                {
                        $this->setValue( "viewIsError", $error );
                        
                        return true;
                }
                
                function setSuccess( $success = true )
                {
                        $this->setValue( "viewIsSuccess", $success );
                        
                        return true;
                }
                
                function setSuccessMessage( $message )
                {
                        $this->setValue( "viewSuccessMessage", $message );
                        $this->setSuccess( true );                      
                        
                        return true;
                }
                
                function setSessionValue( $param, $value )
                {
                        $session = HttpVars::getSession();

            // if there is no session data, there's nothing for us to set
            if( !is_array( $session )) 
                return false;           
                
                        $viewName = get_class( $this );
                        $keyName = "{$viewName}_{$param}";
                        $session["$keyName"] = $value;
                        HttpVars::setSession( $session );
                        
                        return true;
                }
                
        function getSessionValue( $param, $defaultValue = "" )
        {
            $session = HttpVars::getSession();

            // if there is no session data, there's nothing for us to look for
            if( !is_array( $session )) 
                return false;
            
                        $viewName = get_class( $this );
            $keyName = "{$viewName}_{$param}";

            if(isset($session[$keyName]) && !empty($session[$keyName]) ){
                return $session[$keyName];
            } else{
                return $defaultValue;
            }
        }
        

                function getCurrentPageFromRequest()
                {
            static $request;
                        if( $request == null )
                                $request = new Request( HttpVars::getRequest() );

                        // get the page value from the request
                        $page = $request->getValue( VIEW_DEFAULT_PAGE_PARAMETER );

                        // but first of all, validate it
            lt_include( PLOG_CLASS_PATH."class/data/validator/integervalidator.class.php");
                        $val = new IntegerValidator();
                        if( !$val->validate( $page ))
                                $page = VIEW_DEFAULT_START_PAGE;
                                                        
                        return $page;
                }

        function render()
        {
            // send the headers we've been assigned if any, alognside the conten-type header
            foreach( $this->_headers as $header )
            header( $header );

            $this->sendContentType();            
        }
    }
?>

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