readmore.php

Joomla!是一套获得过多个奖项的内容管理系统(Content Management System, CMS)。Joomla!采用PHP+MySQL数据库开发

<?php
/**
 * @version		$Id: readmore.php 10709 2008-08-21 09:58:52Z eddieajau $
 * @package		Joomla
 * @copyright	Copyright (C) 2005 - 2008 Open Source Matters. All rights reserved.
 * @license		GNU/GPL, see LICENSE.php
 * Joomla! is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 * See COPYRIGHT.php for copyright notices and details.
 */

// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );

jimport( 'joomla.plugin.plugin' );

/**
 * Editor Readmore buton
 *
 * @package Editors-xtd
 * @since 1.5
 */
class plgButtonReadmore extends JPlugin
{
	/**
	 * Constructor
	 *
	 * For php4 compatability we must not use the __constructor as a constructor for plugins
	 * because func_get_args ( void ) returns a copy of all passed arguments NOT references.
	 * This causes problems with cross-referencing necessary for the observer design pattern.
	 *
	 * @param 	object $subject The object to observe
	 * @param 	array  $config  An array that holds the plugin configuration
	 * @since 1.5
	 */
	function plgButtonReadmore(& $subject, $config)
	{
		parent::__construct($subject, $config);
	}

	/**
	 * readmore button
	 * @return array A two element array of ( imageName, textToInsert )
	 */
	function onDisplay($name)
	{
		global $mainframe;

		$doc 		=& JFactory::getDocument();
		$template 	= $mainframe->getTemplate();

		// button is not active in specific content components

		$getContent = $this->_subject->getContent($name);
		$present = JText::_('ALREADY EXISTS', true) ;
		$js = "
			function insertReadmore(editor) {
				var content = $getContent
				if (content.match(/<hr\s+id=(\"|')system-readmore(\"|')\s*\/*>/i)) {
					alert('$present');
					return false;
				} else {
					jInsertEditorText('<hr id=\"system-readmore\" />', editor);
				}
			}
			";

		$doc->addScriptDeclaration($js);

		$button = new JObject();
		$button->set('modal', false);
		$button->set('onclick', 'insertReadmore(\''.$name.'\');return false;');
		$button->set('text', JText::_('Readmore'));
		$button->set('name', 'readmore');
		// TODO: The button writer needs to take into account the javascript directive
		//$button->set('link', 'javascript:void(0)');
		$button->set('link', '#');

		return $button;
	}
}