commentrenderer.php

讲的是网络编程

<?php
// $Id: commentrenderer.php 2 2005-11-02 18:23:29Z skalpa $
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  This program is free software; you can redistribute it and/or modify     //
//  it under the terms of the GNU General Public License as published by     //
//  the Free Software Foundation; either version 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  This program is distributed in the hope that it will be useful,          //
//  but WITHOUT ANY WARRANTY; without even the implied warranty of           //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            //
//  GNU General Public License for more details.                             //
//                                                                           //
//  You should have received a copy of the GNU General Public License        //
//  along with this program; if not, write to the Free Software              //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu)                                          //
// URL: http://www.xoops.org/ http://jp.xoops.org/  http://www.myweb.ne.jp/  //
// Project: The XOOPS Project (http://www.xoops.org/)                        //
// ------------------------------------------------------------------------- //
/**
 * Display comments
 *
 * @package		kernel
 * @subpackage	comment
 *
 * @author		Kazumi Ono 	<[e-mail]>
 * @copyright	(c) 2000-2003 The Xoops Project - www.xoops.org
 */
class XoopsCommentRenderer {

	/**#@+
     * @access	private
     */
    var $_tpl;
	var $_comments = null;
	var $_useIcons = true;
	var $_doIconCheck = false;
	var $_memberHandler;
	var $_statusText;
    /**#@-*/

	/**
	 * Constructor
	 * 
	 * @param   object  &$tpl   
	 * @param   boolean $use_icons
	 * @param   boolean $do_iconcheck
	 **/
	function XoopsCommentRenderer(&$tpl, $use_icons = true, $do_iconcheck = false)
	{
		$this->_tpl =& $tpl;
		$this->_useIcons = $use_icons;
		$this->_doIconCheck = $do_iconcheck;
		$this->_memberHandler =& xoops_gethandler('member');
		$this->_statusText = array(XOOPS_COMMENT_PENDING => '<span style="text-decoration: none; font-weight: bold; color: #00ff00;">'._CM_PENDING.'</span>', XOOPS_COMMENT_ACTIVE => '<span style="text-decoration: none; font-weight: bold; color: #ff0000;">'._CM_ACTIVE.'</span>', XOOPS_COMMENT_HIDDEN => '<span style="text-decoration: none; font-weight: bold; color: #0000ff;">'._CM_HIDDEN.'</span>');
	}

	/**
	 * Access the only instance of this class
	 * 
	 * @param   object  $tpl        reference to a {@link Smarty} object
	 * @param   boolean $use_icons
	 * @param   boolean $do_iconcheck
	 * @return 
	 **/
	function &instance(&$tpl, $use_icons = true, $do_iconcheck = false)
	{
		static $instance;
		if (!isset($instance)) {
			$instance = new XoopsCommentRenderer($tpl, $use_icons, $do_iconcheck);
		}
		return $instance;
	}

	/**
	 * Accessor
	 * 
	 * @param   object  &$comments_arr  array of {@link XoopsComment} objects
	 **/
	function setComments(&$comments_arr)
	{
		if (isset($this->_comments)) {
			unset($this->_comments);
		}
		$this->_comments =& $comments_arr;
	}

	/**
	 * Render the comments in flat view
	 * 
	 * @param boolean $admin_view
	 **/
	function renderFlatView($admin_view = false)
	{
		$count = count($this->_comments);
		for ($i = 0; $i < $count; $i++) {
			if (false != $this->_useIcons) {
				$title = $this->_getTitleIcon($this->_comments[$i]->getVar('com_icon')).'&nbsp;'.$this->_comments[$i]->getVar('com_title');
			} else {
				$title = $this->_comments[$i]->getVar('com_title');
			}
			$poster = $this->_getPosterArray($this->_comments[$i]->getVar('com_uid'));
			if (false != $admin_view) {
				$text = $this->_comments[$i]->getVar('com_text').'<div style="text-align:right; margin-top: 2px; margin-bottom: 0px; margin-right: 2px;">'._CM_STATUS.': '.$this->_statusText[$this->_comments[$i]->getVar('com_status')].'<br />IP: <span style="font-weight: bold;">'.$this->_comments[$i]->getVar('com_ip').'</span></div>';
			} else {
				// hide comments that are not active
				if (XOOPS_COMMENT_ACTIVE != $this->_comments[$i]->getVar('com_status')) {
					continue;
				} else {
					$text = $this->_comments[$i]->getVar('com_text');
				}
			}
			$this->_tpl->append('comments', array('id' => $this->_comments[$i]->getVar('com_id'), 'title' => $title, 'text' => $text, 'date_posted' => formatTimestamp($this->_comments[$i]->getVar('com_created'), 'm'), 'date_modified' => formatTimestamp($this->_comments[$i]->getVar('com_modified'), 'm'), 'poster' => $poster));
		}
	}

	/**
	 * Render the comments in thread view
     * 
     * This method calls itself recursively
	 * 
	 * @param integer $comment_id   Should be "0" when called by client
	 * @param boolean $admin_view
	 * @param boolean $show_nav
	 **/
	function renderThreadView($comment_id = 0, $admin_view = false, $show_nav = true)
	{
		include_once XOOPS_ROOT_PATH.'/class/tree.php';
		// construct comment tree
		$xot = new XoopsObjectTree($this->_comments, 'com_id', 'com_pid', 'com_rootid');
		$tree =& $xot->getTree();

		if (false != $this->_useIcons) {
			$title = $this->_getTitleIcon($tree[$comment_id]['obj']->getVar('com_icon')).'&nbsp;'.$tree[$comment_id]['obj']->getVar('com_title');
		} else {
			$title = $tree[$comment_id]['obj']->getVar('com_title');
		}
		if (false != $show_nav && $tree[$comment_id]['obj']->getVar('com_pid') != 0) {
			$this->_tpl->assign('lang_top', _CM_TOP);
			$this->_tpl->assign('lang_parent', _CM_PARENT);
			$this->_tpl->assign('show_threadnav', true);
		} else {
			$this->_tpl->assign('show_threadnav', false);
		}
		if (false != $admin_view) {
			// admins can see all
			$text = $tree[$comment_id]['obj']->getVar('com_text').'<div style="text-align:right; margin-top: 2px; margin-bottom: 0px; margin-right: 2px;">'._CM_STATUS.': '.$this->_statusText[$tree[$comment_id]['obj']->getVar('com_status')].'<br />IP: <span style="font-weight: bold;">'.$tree[$comment_id]['obj']->getVar('com_ip').'</span></div>';
		} else {
			// hide comments that are not active
			if (XOOPS_COMMENT_ACTIVE != $tree[$comment_id]['obj']->getVar('com_status')) {
				// if there are any child comments, display them as root comments
				if (isset($tree[$comment_id]['child']) && !empty($tree[$comment_id]['child'])) {
					foreach ($tree[$comment_id]['child'] as $child_id) {
						$this->renderThreadView($child_id, $admin_view, false);
					}
				}
				return;
			} else {
				$text = $tree[$comment_id]['obj']->getVar('com_text');
			}
		}
		$replies = array();
		$this->_renderThreadReplies($tree, $comment_id, $replies, '&nbsp;&nbsp;', $admin_view);
		$show_replies = (count($replies) > 0) ? true : false;
		$this->_tpl->append('comments', array('pid' => $tree[$comment_id]['obj']->getVar('com_pid'), 'id' => $tree[$comment_id]['obj']->getVar('com_id'), 'itemid' => $tree[$comment_id]['obj']->getVar('com_itemid'), 'rootid' => $tree[$comment_id]['obj']->getVar('com_rootid'), 'title' => $title, 'text' => $text, 'date_posted' => formatTimestamp($tree[$comment_id]['obj']->getVar('com_created'), 'm'), 'date_modified' => formatTimestamp($tree[$comment_id]['obj']->getVar('com_modified'), 'm'), 'poster' => $this->_getPosterArray($tree[$comment_id]['obj']->getVar('com_uid')), 'replies' => $replies, 'show_replies' => $show_replies));
	}

	/**
	 * Render replies to a thread
	 * 
	 * @param   array   &$thread
	 * @param   int     $key
	 * @param   array   $replies
	 * @param   string  $prefix
	 * @param   bool    $admin_view
	 * @param   integer $depth
	 * @param   string  $current_prefix
     * 
     * @access	private
	 **/
	function _renderThreadReplies(&$thread, $key, &$replies, $prefix, $admin_view, $depth = 0, $current_prefix = '')
	{
        if ($depth > 0) {