Vocabulary.php

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<?php
/*-------------------------------------------------------------------------------
 * Xataface Web Application Framework
 * Copyright (C) 2005-2008 Web Lite Solutions Corp (shannah@sfu.ca)
 * 
 * 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.
 * 
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *-------------------------------------------------------------------------------
 */
/*******************************************************************************
 * File:                Dataface/Vocabulary.php
 * Author:      Steve Hannah <shannah@sfu.ca>
 * Created:     Sept. 2, 2005
 * Description:
 *      Encapsulates vocabularies that can be used in select lists and auto complete widgets
 *      to limit the input to a field.
 ******************************************************************************/
 
class Dataface_Vocabulary {

        var $_options = array();
        var $_name;
        function Dataface_Vocabulary($name,$options){
                $this->_name = $name;
                $this->_options = $options;
        }
        
        
        public static function &getVocabulary($name){
                $vocabularies =& Dataface_Vocabulary::getVocabularies();
                
                if ( !isset( $vocabularies[$name] ) ){
                        $vocabularies[$name] = new Dataface_Vocabulary($name, array());
                }
                
                
                return $vocabularies[$name];
        }
        
        
        public static function &getVocabularies(){
                if ( !isset( $vocabularies ) ){
                        static $vocabularies = array();
                }
                return $vocabularies;
        }
        
        function register($name, $vocab){
                $vocabs =& Dataface_Vocabulary::getVocabularies();
                
                if ( is_array($vocab) ){
                        $vocab = new Dataface_Vocabulary($name, $vocab);
                }
                
                $vocabs[$name] =& $vocab;
        }
        
        
        
        function &options(){
                return $this->_options;
        }
        
        function setOptions($options){
                $this->_options = $options;
        }
        
        function addOption($key,$value=''){
                if ( !$value ) {
                        $value = $key;
                }
                
                $this->_options[$key] = $value;
        }
        
        function removeOptions($key){
                unset($this->_options[$key]);
        }
}