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   103
 
<?php
 
namespace elanpl\L3;
 
class View{
    protected $viewFileExtension;
    protected $viewFile;
    protected $context;
    public $_L3; //The L3 instance
 
    public function __construct(){
        $numargs = func_num_args();
     
        if ($numargs == 0) {
            $view = "";
            $context = array();
        }
        else if ($numargs == 1) {
            $arg = func_get_arg(0);
            if(is_object($arg) && $arg instanceof ViewModel){
                if(method_exists($arg, 'getContext')){
                    $context = $arg->getContext();
                }
                else{
                    $context = array();
                    $context['vm'] = $arg;
                }
 
                if(method_exists($arg, 'getView')){
                    $view = $arg->getView();
                }
                else{
                    $view = $arg;
                }
 
                if(isset($arg->_L3)){
                    $this->_L3 = $arg->_L3;
                }
            }
            else{
                $view = "";
                $context = $arg;
            }
        }
        else {
            $arg = func_get_arg(0);
            if($arg instanceof Application){
                $this->_L3 = $arg;
                $view = func_get_arg(1);
                $context = func_get_arg(2);
            }
            else{
                $view = func_get_arg(0);
                $context = func_get_arg(1);
            }
        }
 
        if(!isset($this->_L3)){
            // if an Application object was not injected, take it form the global context...
            global $_L3;
            $this->_L3 = $_L3;
        }
        
 
        if($this->viewFile = $this->find($view)){
            $this->viewFileExtension = ".".pathinfo($this->viewFile, PATHINFO_EXTENSION);
        }
        else{
            throw new \Exception("View file:\"$view\" not found!");
        }
        $this->context = $context;
    }
 
    public function render(){
        if ($viewEngineClass = $this->_L3->viewEngines::get($this->viewFileExtension)){
            $view = new $viewEngineClass();
            return $view->render($this->viewFile, $this->context);
        }
        else{
            throw new \Exception("View Engine not found for the view file extension:\"".$this->viewFileExtension."\"!");
        }
    }
 
    public function find($view){
        //find the view file
        if(is_string($view) && is_file($view)){
            // full path was provided...
            return $view;
        }
        else{
            // search for the view file
            
            //search for controller, action and module if present  
            if(is_object($view) && $view instanceof ViewModel){
                $controller = $view->getController();
                $module = $view->getModule();
                $action = $view->getAction();
                $view = "";
            }
            else{                    
                
                $match = $this->_L3->findControllerInCallStack();