<?php
/**
 * @version		$Id: commandable.php 4266 2011-10-08 23:57:41Z johanjanssens $
 * @category	Koowa
 * @package		Koowa_Controller
 * @subpackage	Command
 * @copyright	Copyright (C) 2007 - 2010 Johan Janssens. All rights reserved.
 * @license		GNU GPLv3 <http://www.gnu.org/licenses/gpl.html>
 * @link     	http://www.nooku.org
 */

/**
 * Commandable Controller Behavior Class
 *
 * @author		Johan Janssens <johan@nooku.org>
 * @category	Koowa
 * @package     Koowa_Controller
 * @subpackage	Behavior
 */
class KControllerBehaviorCommandable extends KControllerBehaviorAbstract
{  
	/**
	 * Toolbar object or identifier (com://APP/COMPONENT.model.NAME)
	 *
	 * @var	string|object
	 */
	protected $_toolbar;
	
	/**
	 * Constructor
	 *
	 * @param 	object 	An optional KConfig object with configuration options.
	 */
	public function __construct(KConfig $config)
	{
		parent::__construct($config);

		$this->_toolbar = $config->toolbar;
	}
	
	/**
     * Initializes the default configuration for the object
     *
     * Called from {@link __construct()} as a first step of object instantiation.
     *
     * @param 	object 	An optional KConfig object with configuration options.
     * @return void
     */
    protected function _initialize(KConfig $config)
    {
    	$config->append(array(
    		'toolbar'	=> null,
        ));
 
        parent::_initialize($config);
    }
      	
	/**
	 * Get the view object attached to the controller
	 *
	 * @throws  KControllerException if the view cannot be found.
	 * @return	KControllerToolbarAbstract 
	 */
    public function getToolbar()
    { 
        if(!$this->_toolbar instanceof KControllerToolbarAbstract)
		{	   
		    //Make sure we have a view identifier
		    if(!($this->_toolbar instanceof KServiceIdentifier)) {
		        $this->setToolbar($this->_toolbar);
			}
		
			$config = array(
			    'controller' => $this->getMixer()
			);
			
			$this->_toolbar = $this->getService($this->_toolbar, $config);
		}    
         
        return $this->_toolbar;
    }
	
	/**
	 * Method to set a toolbar object attached to the controller
	 *
	 * @param	mixed	An object that implements KObjectServiceable, KServiceIdentifier object 
	 * 					or valid identifier string
	 * @throws	KControllerBehaviorException	If the identifier is not a view identifier
	 * @return	KControllerToolbarAbstract 
	 */
    public function setToolbar($toolbar)
    {
        if(!($toolbar instanceof KControllerToolbarAbstract))
		{
			if(is_string($toolbar) && strpos($toolbar, '.') === false ) 
		    {
			    $identifier         = clone $this->getIdentifier();
                $identifier->path   = array('controller', 'toolbar');
                $identifier->name   = $toolbar;
			}
			else $identifier = $this->getIdentifier($toolbar);
			
			if($identifier->path[1] != 'toolbar') {
				throw new KControllerBehaviorException('Identifier: '.$identifier.' is not a toolbar identifier');
			}

			$toolbar = $identifier;
		}
		
		$this->_toolbar = $toolbar;
        
        return $this;
    }
    
    /**
	 * Add default toolbar commands
	 * .
	 * @param	KCommandContext	A command context object
	 */
    protected function _beforeGet(KCommandContext $context)
    {
        if(!$this->_toolbar) {
            $this->setToolbar($this->getView()->getName());
        }
    }
        
	/**
	 * Add default toolbar commands and set the toolbar title
	 * .
	 * @param	KCommandContext	A command context object
	 */
    protected function _afterRead(KCommandContext $context)
    { 
        if($this->_toolbar)
        {
            $name = ucfirst($context->caller->getIdentifier()->name);
            
            if($this->getModel()->getState()->isUnique()) 
            {        
                $saveable = $this->canEdit();
                $title    = 'Edit '.$name;
            } 
            else 
            {
                $saveable = $this->canAdd();
                $title    = 'New '.$name;  
            }
            
            if($saveable)
            {
                $this->getToolbar()
                     ->setTitle($title)
                     ->addCommand('save')
                     ->addCommand('apply');
            }
                   
            $this->getToolbar()->addCommand('cancel',  array('attribs' => array('data-novalidate' => 'novalidate')));        
        }
    }
      
    /**
	 * Add default toolbar commands
	 * .
	 * @param	KCommandContext	A command context object
	 */
    protected function _afterBrowse(KCommandContext $context)
    {    
        if($this->_toolbar)
        {
            if($this->canAdd()) 
            {
                $identifier = $context->caller->getIdentifier();
                $config     = array('attribs' => array(
                    				'href' => JRoute::_( 'index.php?option=com_'.$identifier->package.'&view='.$identifier->name)
                              ));
                
                $this->getToolbar()->addCommand('new', $config);
            }
            
            if($this->canDelete()) {
                $this->getToolbar()->addCommand('delete');
            }
        }
    }
}