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			378 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			378 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
| <?php
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| /**
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|  * Implementation of view class
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|  *
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|  * @category   DMS
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|  * @package    SeedDMS
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|  * @license    GPL 2
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|  * @version    @version@
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|  * @author     Uwe Steinmann <uwe@steinmann.cx>
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|  * @copyright  Copyright (C) 2002-2005 Markus Westphal,
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|  *             2006-2008 Malcolm Cowe, 2010 Matteo Lucarelli,
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|  *             2010-2012 Uwe Steinmann
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|  * @version    Release: @package_version@
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|  */
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| 
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| require_once "inc.ClassHook.php";
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| 
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| /**
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|  * Parent class for all view classes
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|  *
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|  * @category   DMS
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|  * @package    SeedDMS
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|  * @author     Markus Westphal, Malcolm Cowe, Uwe Steinmann <uwe@steinmann.cx>
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|  * @copyright  Copyright (C) 2002-2005 Markus Westphal,
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|  *             2006-2008 Malcolm Cowe, 2010 Matteo Lucarelli,
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|  *             2010-2012 Uwe Steinmann
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|  * @version    Release: @package_version@
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|  */
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| class SeedDMS_View_Common {
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| 	protected $theme;
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| 
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| 	protected $params;
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| 
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| 	protected $baseurl;
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| 
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| 	protected $imgpath;
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| 
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| 	public function __construct($params, $theme='bootstrap') {
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| 		$this->theme = $theme;
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| 		$this->params = $params;
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| 		$this->baseurl = '';
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| 		if(isset($params['settings']))
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| 			$this->imgpath = $params['settings']->_httpRoot.'views/'.$theme.'/images/';
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| 		else
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| 			$this->imgpath = '../views/'.$theme.'/images/';
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| 	}
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| 
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| 	/**
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| 	 * Call method with name in $get['action']
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| 	 *
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| 	 * Until 5.1.26 (6.0.19) this method took the name of the
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| 	 * controller method to run from the element 'action' passed
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| 	 * in the array $get. Since 5.1.27 (6.0.20) a PSR7 Request
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| 	 * object is available in the controller and used to get the
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| 	 * action.
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| 	 *
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| 	 * @params array $get $_GET or $_POST variables (since 5.1.27 this is no longer used)
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| 	 * @return mixed return value of called method
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| 	 */
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| 	public function __invoke($get=array()) {
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| 		$action = null;
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| 		$request = $this->getParam('request');
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| 		if($request) {
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| 			if($request->isMethod('get'))
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| 				$action = $request->query->get('action');
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| 			elseif($request->isMethod('post'))
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| 				$action = $request->request->get('action');
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| 		}
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| 		if(!$this->callHook('preRun', get_class($this), $action ? $action : 'show')) {
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| 			if($action) {
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| 				if(method_exists($this, $action)) {
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| 					$refl = new ReflectionMethod($this, $action);
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| 					if($refl->isPublic())
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| 						$this->{$action}();
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| 					else {
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| 						echo "Action '".$action."' not public";
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| 						return false;
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| 					}
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| 				} else {
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| 					echo "Missing action '".htmlspecialchars($action)."'";
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| 				}
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| 			} else
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| 				$this->show();
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| 		} else {
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| 			return false;
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| 		}
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| 		$this->callHook('postRun', $action ? $action : 'show');
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| 	}
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| 
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| 	public function setParams($params) {
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| 		$this->params = $params;
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| 	}
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| 
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| 	public function setParam($name, $value) {
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| 		$this->params[$name] = $value;
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| 	}
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| 
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| 	public function getParam($name) {
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| 		if(isset($this->params[$name]))
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| 			return $this->params[$name];
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| 		return null;
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| 	}
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| 
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| 	/**
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| 	 * Check if the view has a parameter with the given name
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| 	 *
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| 	 * @param string $name name of parameter
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| 	 * @return boolean true if parameter exists otherwise false
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| 	 */
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| 	public function hasParam($name) {
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| 		return isset($this->params[$name]) ? true : false;
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| 	}
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| 
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| 	public function unsetParam($name) {
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| 		if(isset($this->params[$name]))
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| 			unset($this->params[$name]);
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| 	}
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| 
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| 	public function setBaseUrl($baseurl) {
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| 		$this->baseurl = $baseurl;
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| 	}
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| 
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| 	public function getTheme() {
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| 		return $this->theme;
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| 	}
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| 
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| 	public function show() {
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| 	}
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| 
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| 	/**
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| 	 * Return a list of hook classes for the current class
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| 	 *
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| 	 * Hooks are associated to a view class. Calling a hook with
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| 	 * SeedDMS_View_Common::callHook() will run through a list of
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| 	 * view classes searching for the hook. This method returns this
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| 	 * list.
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| 	 *
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| 	 * If a view is implemented in SeedDMS_View_Example which inherits
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| 	 * from SeedDMS_Theme_Style which again inherits from SeedDMS_View_Common,
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| 	 * then this method will return an array with the elments:
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| 	 * 'Example', 'Style', 'Common'. If SeedDMS_View_Example also sets
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| 	 * the class property 'viewAliasName', then this value will be added
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| 	 * to the beginning of the list.
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| 	 *
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| 	 * When a hook is called, it will run through this list and checks
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| 	 * if $GLOBALS['SEEDDMS_HOOKS']['view'][<element>] exists and contains
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| 	 * an instanciated class. This class must implement the hook.
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| 	 *
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| 	 * @return array list of view class names.
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| 	 */
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| 	protected function getHookClassNames() { /* {{{ */
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| 		$tmps = array();
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| 		/* the viewAliasName can be set in the view to specify a different name
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| 		 * than extracted from the class name.
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| 		 */
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| 		if(property_exists($this, 'viewAliasName') && !empty($this->viewAliasName)) {
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| 			$tmps[] = $this->viewAliasName;
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| 		}
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| 		$tmp = explode('_', get_class($this));
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| 		$tmps[] = $tmp[2];
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| 		foreach(class_parents($this) as $pc) {
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| 			$tmp = explode('_', $pc);
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| 			$tmps[] = $tmp[2];
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| 		}
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| 		/* Run array_unique() in case the parent class has the same suffix */
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| 		$tmps = array_unique($tmps);
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| 		return $tmps;
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| 	} /* }}} */
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| 
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| 	/**
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| 	 * Call a hook with a given name
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| 	 *
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| 	 * Checks if a hook with the given name and for the current view
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| 	 * exists and executes it. The name of the current view is taken
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| 	 * from the current class name by lower casing the first char.
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| 	 * This function will execute all registered hooks in the order
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| 	 * they were registered.
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| 	 *
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| 	 * Attention: as func_get_arg() cannot handle references passed to the hook,
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| 	 * callHook() should not be called if that is required. In that case get
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| 	 * a list of hook objects with getHookObjects() and call the hooks yourself.
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| 	 *
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| 	 * @params string $hook name of hook
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| 	 * @return string concatenated string, merged arrays or whatever the hook
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| 	 * function returns
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| 	 */
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| 	public function callHook($hook) { /* {{{ */
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| 		$tmps = $this->getHookClassNames();
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| 		$ret = null;
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| 		foreach($tmps as $tmp)
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| 		if(isset($GLOBALS['SEEDDMS_HOOKS']['view'][lcfirst($tmp)])) {
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| 			foreach($GLOBALS['SEEDDMS_HOOKS']['view'][lcfirst($tmp)] as $hookObj) {
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| 				if (method_exists($hookObj, $hook)) {
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| 					switch(func_num_args()) {
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| 						case 1:
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| 							$tmpret = $hookObj->$hook($this);
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| 							break;
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| 						case 2:
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| 							$tmpret = $hookObj->$hook($this, func_get_arg(1));
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| 							break;
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| 						case 3:
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| 							$tmpret = $hookObj->$hook($this, func_get_arg(1), func_get_arg(2));
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| 							break;
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| 						case 4:
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| 							$tmpret = $hookObj->$hook($this, func_get_arg(1), func_get_arg(2), func_get_arg(3));
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| 							break;
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| 						default:
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| 						case 5:
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| 							$tmpret = $hookObj->$hook($this, func_get_arg(1), func_get_arg(2), func_get_arg(3), func_get_arg(4));
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| 							break;
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| 					}
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| 					if($tmpret !== null) {
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| 						if(is_string($tmpret)) {
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| 							$ret = ($ret === null) ? $tmpret : (is_string($ret) ? $ret.$tmpret : array_merge($ret, array($tmpret)));
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| 						} elseif(is_array($tmpret) || is_object($tmpret)) {
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| 							$ret = ($ret === null) ? $tmpret : (is_string($ret) ? array_merge(array($ret), $tmpret) : array_merge($ret, $tmpret));
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| 						} else
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| 							$ret = $tmpret;
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| 					}
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| 				}
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| 			}
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| 		}
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| 		return $ret;
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| 	} /* }}} */
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| 
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| 	/**
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| 	 * Return all hook objects for the given or calling class
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| 	 *
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| 	 * <code>
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| 	 * <?php
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| 	 * $hookObjs = $this->getHookObjects();
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| 	 * foreach($hookObjs as $hookObj) {
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| 	 *   if (method_exists($hookObj, $hook)) {
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| 	 *     $ret = $hookObj->$hook($this, ...);
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| 	 *     ...
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| 	 *   }
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| 	 * }
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| 	 * ?>
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| 	 * </code>
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| 	 *
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| 	 * The method does not return hooks for parent classes nor does it
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| 	 * evaluate the viewAliasName property.
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| 	 *
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| 	 * @params string $classname name of class (current class if left empty)
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| 	 * @return array list of hook objects registered for the class
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| 	 */
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| 	public function getHookObjects($classname='') { /* {{{ */
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| 		if($classname)
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| 			$tmps = array(explode('_', $classname)[2]);
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| 		else
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| 			$tmps = $this->getHookClassNames();
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| 		$hooks = [];
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| 		foreach($tmps as $tmp) {
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| 			if(isset($GLOBALS['SEEDDMS_HOOKS']['view'][lcfirst($tmp)])) {
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| 				$hooks = array_merge($hooks, $GLOBALS['SEEDDMS_HOOKS']['view'][lcfirst($tmp)]);
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| 			}
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| 		}
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| 		return $hooks;
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| 	} /* }}} */
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| 
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| 	/**
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| 	 * Check if a hook is registered
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| 	 *
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| 	 * @param $hook string name of hook
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| 	 * @return mixed false if one of the hooks fails,
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| 	 *               true if all hooks succedded,
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| 	 *               null if no hook was called
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| 	 */
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| 	public function hasHook($hook) { /* {{{ */
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| 		$tmps = $this->getHookClassNames();
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| 		foreach($tmps as $tmp) {
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| 			if(isset($GLOBALS['SEEDDMS_HOOKS']['view'][lcfirst($tmp)])) {
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| 				foreach($GLOBALS['SEEDDMS_HOOKS']['view'][lcfirst($tmp)] as $hookObj) {
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| 					if (method_exists($hookObj, $hook)) {
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| 						return true;
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| 					}
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| 				}
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| 			}
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| 		}
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| 		return false;
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| 	} /* }}} */
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| 
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| 	/**
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| 	 * Check if the access on the view with given name or the current view itself
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| 	 * may be accessed.
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| 	 *
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| 	 * The function requires the parameter 'accessobject' to be available in the
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| 	 * view, because it calls SeedDMS_AccessOperation::check_view_access()
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| 	 * to check access rights. If the the optional $name is not set the
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| 	 * current view is used.
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| 	 *
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| 	 * If $name is an array then just one of the passed objects in the array
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| 	 * must be accessible for this function to return true.
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| 	 *
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| 	 * @param string|array $name name of view or list of view names
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| 	 * @return boolean true if access is allowed otherwise false
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| 	 */
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| 	protected function check_view_access($name='') { /* {{{ */
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| 		if(!$name)
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| 			$name = $this;
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| 		if(!isset($this->params['accessobject']))
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| 			return false;
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| 		$access = $this->params['accessobject']->check_view_access($name);
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| 		return $access;
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| 
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| 		if(isset($this->params['user']) && $this->params['user']->isAdmin()) {
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| 			if($access === -1)
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| 				return false;
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| 			else
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| 				return true;
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| 		}
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| 
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| 		return ($access === 1);
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| 	} /* }}} */
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| 
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| 	/**
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| 	 * Create an url to a view
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| 	 *
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| 	 * @param string $name name of view
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| 	 * @param array $urlparams list of url parameters
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| 	 * @return string $url
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| 	 */
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| 	protected function html_url($view, $urlparams=array()) { /* {{{ */
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| 		$url = $this->params['settings']->_httpRoot."out/out.".$view.".php";
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| 		if($urlparams)
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| 			$url .= "?".http_build_query($urlparams);
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| 		return $url;
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| 	} /* }}} */
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| 
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| 	/**
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| 	 * Create a html link to a view
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| 	 *
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| 	 * First checks if the view may be accessed by the user
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| 	 *
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| 	 * @param string $name name of view
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| 	 * @param array $urlparams list of url parameters
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| 	 * @param array $linkparams list of link attributes (e.g. class, target)
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| 	 * @param string $link the link text itself
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| 	 * @param boolean $hsc set to false if htmlspecialchars() shall not be called
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| 	 * @return string link
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| 	 */
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| 	protected function html_link($view, $urlparams, $linkparams, $link, $hsc=true, $nocheck=false, $wrap=array()) { /* {{{ */
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| 		if(!$nocheck)
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| 			if(!$this->check_view_access($view))
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| 				return '';
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| 		$url = $this->html_url($view, $urlparams);
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| 		$tag = "<a href=\"".$url."\"";
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| 		if($linkparams)
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| 			foreach($linkparams as $k=>$v)
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| 				$tag .= " ".$k."=\"".$v."\"";
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| 		$tag .= ">".($hsc ? htmlspecialchars($link) : $link)."</a>";
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| 		if(is_array($wrap) && count($wrap) == 2)
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| 			return $wrap[0].$tag.$wrap[1];
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| 		return $tag;
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| 	} /* }}} */
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| 
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| 	public function jsTranslations($keys) { /* {{{ */
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| 		echo "var trans = {\n";
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| 		foreach($keys as $key) {
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| 			echo "	'".$key."': '".str_replace("'", "\\\'", getMLText($key))."',\n";
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| 		}
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| 		echo "};\n";
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| 	} /* }}} */
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| 
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| 	public static function getContrastColor($hexcolor) { /* {{{ */
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| 		$r = hexdec(substr($hexcolor, 1, 2));
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| 		$g = hexdec(substr($hexcolor, 3, 2));
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| 		$b = hexdec(substr($hexcolor, 5, 2));
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| 		if(0) {
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| 			$yiq = (($r * 299) + ($g * 587) + ($b * 114)) / 1000;
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| 			return ($yiq >= 148) ? '000000' : 'ffffff';
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| 		} else {
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| 			$l = (max($r, max($g, $b)) + min($r, min($g, $b)))/2;
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| 			return ($l > 128) ? '000000' : 'ffffff';
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| 		}
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| 	} /* }}} */
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| }
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