formelementtray.php

讲的是网络编程

<?php
// $Id: formelementtray.php 1151 2007-12-04 15:43:01Z phppp $
//  ------------------------------------------------------------------------ //
//                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.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/ //
// Project: The XOOPS Project                                                //
// ------------------------------------------------------------------------- //
if (!defined('XOOPS_ROOT_PATH')) {
	die("XOOPS root path not defined");
}
/**
 * 
 * 
 * @package     kernel
 * @subpackage  form
 * 
 * @author	    Kazumi Ono	<[e-mail]>
 * @copyright	copyright (c) 2000-2003 XOOPS.org
 */
 
/**
 * A group of form elements
 * 
 * @author	Kazumi Ono	<[e-mail]>
 * @copyright	copyright (c) 2000-2003 XOOPS.org
 * 
 * @package     kernel
 * @subpackage  form
 */
class XoopsFormElementTray extends XoopsFormElement {

	/**
     * array of form element objects
	 * @var array   
     * @access  private
	 */
	var $_elements = array();

	/**
     * required elements
	 * @var array   
	 */
	var $_required = array();

	/**
     * HTML to seperate the elements
	 * @var	string  
	 * @access  private
	 */
	var $_delimeter;

	/**
	 * constructor
	 * 
     * @param	string  $caption    Caption for the group.
     * @param	string  $delimiter  HTML to separate the elements
	 */
	function XoopsFormElementTray($caption, $delimeter = "&nbsp;", $name = "") {
	    $this->setName($name);
		$this->setCaption($caption);
		$this->_delimeter = $delimeter;
	}

	/**
	 * Is this element a container of other elements?
	 * 
     * @return	bool true
	 */	
	function isContainer()
	{
		return true;
	}

	/**
	 * Find out if there are required elements.
	 *
	 * @return	bool
	 */
	function isRequired() {
		return !empty($this->_required);
	}

	/**
	 * Add an element to the group
	 * 
     * @param	object  &$element    {@link XoopsFormElement} to add
	 */
	function addElement(&$formElement, $required = false) {
		$this->_elements[] =& $formElement;
		if (!$formElement->isContainer()) {
    	    if ($required) {
    	        $formElement->_required = true;
    	        $this->_required[] =& $formElement;
		    }
		} else {
			$required_elements =& $formElement->getRequired();
			$count = count($required_elements);
			for ($i = 0 ; $i < $count; $i++) {
				$this->_required[] =& $required_elements[$i];
			}
		}
	}

	/**
	 * get an array of "required" form elements
	 * 
     * @return	array   array of {@link XoopsFormElement}s 
	 */
	function &getRequired() {
		return $this->_required;
	}

	/**
	 * Get an array of the elements in this group
	 * 
	 * @param	bool	$recurse	get elements recursively?
     * @return  array   Array of {@link XoopsFormElement} objects. 
	 */
	function &getElements($recurse = false) {
		if (!$recurse) {
			return $this->_elements;
		} else {
			$ret = array();
			$count = count($this->_elements);
			for ($i = 0; $i < $count; $i++) {
				if (!$this->_elements[$i]->isContainer()) {
					$ret[] =& $this->_elements[$i];
				} else {
					$elements =& $this->_elements[$i]->getElements(true);
					$count2 = count($elements);
					for ($j = 0; $j < $count2; $j++) {
						$ret[] =& $elements[$j];
					}
					unset($elements);
				}
			}
			return $ret;
		}
	}

	/**
	 * Get the delimiter of this group
	 * 
	 * @param	bool    $encode To sanitizer the text?
     * @return	string  The delimiter
	 */
	function getDelimeter($encode = false) {
		return $encode ? htmlspecialchars(str_replace('&nbsp;', ' ', $this->_delimeter)) : $this->_delimeter;
	}

	/**
	 * prepare HTML to output this group
	 * 
     * @return	string  HTML output
	 */
	function render() {
		$count = 0;
		$ret = "";
		foreach ( $this->getElements() as $ele ) {
			if ($count > 0) {
				$ret .= $this->getDelimeter();
			}
			if ($ele->getCaption() != '') {
				$ret .= $ele->getCaption()."&nbsp;";
			}
			$ret .= $ele->render()."\n";
			if (!$ele->isHidden()) {
				$count++;
			}
		}
		return $ret;
	}
}
?>