forked from extern/egroupware
469 lines
14 KiB
PHP
469 lines
14 KiB
PHP
<?php
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/**
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* eGroupWare eTemplate Extension - AJAX Select Widget
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage extensions
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* @link http://www.egroupware.org
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* @author Nathan Gray <nathangray@sourceforge.net>
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* @version $Id$
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*/
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/**
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* AJAX Select Widget
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*
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* Using AJAX, this widget allows a type-ahead find similar to a ComboBox, where as the user enters information,
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* a drop-down box is populated with the n closest matches. If the user clicks on an item in the drop-down, that
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* value is selected.
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* n is the maximum number of results set in the user's preferences.
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* The user is restricted to selecting values in the list.
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* This widget can get data from any function that can provide data to a nextmatch widget.
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* This widget is generating html, so it does not work (without an extra implementation) in an other UI
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*/
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class ajax_select_widget
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{
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var $public_functions = array(
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'pre_process' => True,
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'post_process' => True,
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'ajax_search' => True,
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);
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var $human_name = 'AJAX Select'; // this is the name for the editor
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// Accepted option keys if you're passing in an array to set up the widget
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// Additional options will be passed to the search query
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public static $known_options = array(
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// These ones can be passed in from eTemplate editor in size
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'get_rows',
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'get_title',
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'id_field',
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'template',
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'filter',
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'filter2',
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'link',
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'icon',
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// Pass by code only
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'values',
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);
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// Flag used in id_field to indicate that the key of the record should be used as the value
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const ARRAY_KEY = 'array_key';
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// Array of static values to emulate a combo-box, with no DB lookup
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protected static $static_values = array();
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private $debug = false;
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function ajax_select_widget($ui='')
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{
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switch($ui)
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{
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case '':
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case 'html':
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$this->ui = 'html';
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break;
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default:
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echo "UI='$ui' not implemented";
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}
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return 0;
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}
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/**
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* pre-processing of the extension
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*
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* This function is called before the extension gets rendered
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*
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* @param string $name form-name of the control
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* @param mixed &$value value / existing content, can be modified
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* @param array &$cell array with the widget, can be modified for ui-independent widgets
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* @param array &$readonlys names of widgets as key, to be made readonly
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* @param mixed &$extension_data data the extension can store persisten between pre- and post-process
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* @param object &$tmpl reference to the template we belong too
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* @return boolean true if extra label is allowed, false otherwise
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*/
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function pre_process($name,&$value,&$cell,&$readonlys,&$extension_data,&$tmpl)
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{
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if($this->debug) {
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echo __METHOD__ . '<br />';
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printf("Name:%20s<br />", $name);
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echo 'Value:';
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_debug_array($value);
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echo 'Cell:';
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_debug_array($cell);
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echo 'Readonlys:';
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_debug_array($readonlys);
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echo 'Extension_data:';
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_debug_array($extension_data);
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}
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// Get Options
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$options = array();
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if(!is_array($cell['size'])) {
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list(
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$options['get_rows'],
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$options['get_title'],
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$options['id_field'],
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$options['template'],
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$options['filter'],
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$options['filter2'],
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$options['link'],
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$options['icon']
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) = explode(',', $cell['size']);
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} else {
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$options = $cell['size'];
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}
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if(is_array($value)) {
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$options = array_merge($options, $value);
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}
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if(!$options['template']) {
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$options['template'] = 'etemplate.ajax_select_widget.row';
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}
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if(array_key_exists('values', $options)) {
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if($options['values']) {
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self::$static_values[$name] = $options['values'];
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}
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unset($options['values']);
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}
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$onchange = ($cell['onchange'] ? $cell['onchange'] : 'false');
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// Set current value
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if(!is_array($value)) {
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$current_value = $value;
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} elseif($value[$options['id_field']]) {
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$current_value = $value[$options['id_field']];
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}
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$extension_data['old_value'] = $value;
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list($title_app, $title_class, $title_method) = explode('.', $options['get_title']);
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if($title_app && $title_class) {
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if (is_object($GLOBALS[$title_class])) { // use existing instance (put there by a previous CreateObject)
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$title_obj =& $GLOBALS[$title_class];
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} else {
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$title_obj =& CreateObject($title_app . '.' . $title_class);
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}
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}
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if(!is_object($title_obj) || !method_exists($title_obj,$title_method)) {
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echo "$entry_app.$entry_class.$entry_method is not a valid method for getting the title";
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} elseif($current_value) {
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if($title_method == 'array_title' && $title_class == __CLASS__) {
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$title = self::$title_method($current_value, $name);
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} else {
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$title = $title_obj->$title_method($current_value);
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}
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}
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// Check get_rows method
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list($get_rows_app, $get_rows_class, $get_rows_method) = explode('.', $options['get_rows']);
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if($get_rows_app && $get_rows_class) {
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if (is_object($GLOBALS[$get_rows_class])) { // use existing instance (put there by a previous CreateObject)
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$get_rows_obj =& $GLOBALS[$get_rows_class];
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} else {
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$get_rows_obj =& CreateObject($get_rows_app . '.' . $get_rows_class);
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}
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if(!is_object($get_rows_obj) || !method_exists($get_rows_obj, $get_rows_method)) {
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echo "$get_rows_app.$get_rows_class.$get_rows_method is not a valid method for getting the rows";
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}
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}
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// Set up widget
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$cell['type'] = 'template';
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$cell['size'] = $cell['name'];
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$value = array('value' => $current_value, 'search' => $title);
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$widget = new etemplate('etemplate.ajax_select_widget');
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$widget->no_onclick = True;
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// Link if readonly & link is set
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$search =& $widget->get_widget_by_name('search');
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if(($cell['readonly'] || $readonlys['search']) && $options['link']) {
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$cell['readonly'] = false;
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if(!is_array($readonlys)) {
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$readonlys = array('search' => true);
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} else {
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$readonlys['search'] = true;
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}
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$search['type'] = 'label';
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$search['no_lang'] = 1;
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$search['size'] = ',' . $options['link'];
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$extension_data['readonly'] = true;
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} else {
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$search['type'] = 'text';
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$search['size'] = '';
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if($current_value == '' && $options['id_field'] == self::ARRAY_KEY) {
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$search['blur'] = lang('Search...');
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}
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}
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// Icon
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$icon =& $widget->get_widget_by_path('/0/1A');
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$icon['name'] = $options['icon'];
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$cell['obj'] = &$widget;
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// Save static values, if set
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if(self::$static_values[$name]) {
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$extension_data['values'] = self::$static_values[$name];
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}
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// Save options for post_processing
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$extension_data['options'] = $options;
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$extension_data['needed'] = $cell['needed'];
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// xajax
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$GLOBALS['egw_info']['flags']['include_xajax'] = True;
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// JavaScript
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// converter doesn't handle numeric well
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foreach($options as $key => &$value) {
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if(is_numeric($value)) {
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$value = (string)$value;
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}
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if($value === null) {
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unset($options[$key]);
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}
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}
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$options = $GLOBALS['egw']->js->convert_phparray_jsarray("options['$name']", $options, true);
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$GLOBALS['egw']->js->set_onload("if(!options) {
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var options = new Object();
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}\n
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$options;\n
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ajax_select_widget_setup('$name', '$onchange', options['$name'], '" . $GLOBALS['egw_info']['flags']['currentapp'] . "');
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");
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$GLOBALS['egw']->js->validate_file('.', 'ajax_select', 'etemplate');
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return True; // no extra label
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}
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function post_process($name,&$value,&$extension_data,&$loop,&$tmpl,$value_in)
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{
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//echo "<p>ajax_select_widget.post_process: $name = "; _debug_array($value_in);_debug_array($extension_data);
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if(!is_array($value_in)) {
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$value_in = $extension_data['old_value'];
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}
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// They typed something in, but didn't choose a result
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if(!$value_in['value'] && $value_in['search']) {
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list($get_rows_app, $get_rows_class, $get_rows_method) = explode('.', $extension_data['options']['get_rows']);
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if($get_rows_app && $get_rows_class) {
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if (is_object($GLOBALS[$get_rows_class])) { // use existing instance (put there by a previous CreateObject)
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$get_rows_obj =& $GLOBALS[$get_rows_class];
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} else {
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$get_rows_obj =& CreateObject($get_rows_app . '.' . $get_rows_class);
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}
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if(!is_object($get_rows_obj) || !method_exists($get_rows_obj, $get_rows_method)) {
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echo "$get_rows_app.$get_rows_class.$get_rows_method is not a valid method for getting the rows";
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} else {
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$query = array_merge($extension_data['options'], $value_in);
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$count = $get_rows_obj->$get_rows_method($query, $results);
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if($count == 1) {
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$value = $results[0][$extension_data['options']['id_field']];
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return true;
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} elseif ($count > 1) {
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etemplate::set_validation_error($name,lang("More than 1 match for '%1'",$value_in['search']));
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$loop = true;
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return false;
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} else {
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$value = $value_in['search'];
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return true;
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}
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}
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}
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} elseif ($extension_data['readonly']) {
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$value = $extension_data['old_value'];
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return true;
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} elseif ($value_in['search'] == '') {
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// They're trying to clear the form
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$value = null;
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// True if not needed, false if needed and they gave no value
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$return = !($extension_data['needed'] && trim($value_in['value']) == '');
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if(!$return) {
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$value = $extension_data['old_value'];
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etemplate::set_validation_error($name,lang('Required'));
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$loop = true;
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}
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if($this->debug && $loop) {
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echo 'Looping...<br />Returning ' . $return . '<br />';
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}
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return $return;
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} else {
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if (stripos($extension_data['options']['id_field'], ";")) {
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$expected_fields = array_flip(explode(";", $extension_data['options']['id_field']));
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$fields_n_values = explode(";", $value_in['value']);
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foreach ($fields_n_values as $field_n_value) {
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list($myfield, $myvalue) = explode(":", $field_n_value);
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if (array_key_exists($myfield, $expected_fields)) {
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$value_in[$myfield] = $myvalue;
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}
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}
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$value = $value_in;
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} else {
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$value = $value_in['value'];
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}
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return true;
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}
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}
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function ajax_search($id, $value, $set_id, $query, $etemplate_id) {
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$base_id = substr($id, 0, strrpos($id, '['));
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$result_id = ($set_id ? $set_id : $base_id . '[results]');
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$response = new xajaxResponse();
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if($query['get_rows']) {
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list($app, $class, $method) = explode('.', $query['get_rows']);
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$this->bo = CreateObject($app . '.' . $class);
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unset($query['get_rows']);
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} else {
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return $response->getXML();
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}
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// Expand lists
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foreach($query as $key => &$row) {
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if($row && strpos($row, ',')) {
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$query[$key] = explode(',', $row);
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}
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// sometimes it sends 'null' (not null)
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if($row == 'null') {
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unset($query[$key]);
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} elseif (is_string($row) && strtolower($row) == 'false') {
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$row = false;
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}
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}
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$query['search'] = $value;
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if($query['id_field'] == self::ARRAY_KEY) {
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// Pass base_id so we can get the right values
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$query['field_name'] = $base_id;
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// Check for a provided list of values
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if($request = etemplate_request::read($etemplate_id)) {
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$extension_data = $request->extension_data[$base_id];
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if(is_array($extension_data) && $extension_data['values']) {
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self::$static_values[$base_id] = $extension_data['values'];
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}
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}
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}
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$result_list = array();
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$readonlys = array();
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if(is_object($this->bo)) {
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$count = $this->bo->$method($query, $result_list, $readonlys);
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}
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if(is_array($count)) {
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$count = count($result_list);
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}
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$response->addScript("remove_ajax_results('$result_id')");
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if($count > 0) {
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$response->addScript("add_ajax_result('$result_id', '', '', '" . lang('Select') ."');");
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$count = 0;
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if(!$query['template'] || $query['template'] == 'etemplate.ajax_select_widget.row') {
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$query['template'] = 'etemplate.ajax_select_widget.row';
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}
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foreach($result_list as $key => &$row) {
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if(!is_array($row)) {
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if($query['id_field'] == self::ARRAY_KEY) {
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if(!is_array($row)) {
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// Restructure $row to be an array
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$row = array(
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self::ARRAY_KEY => $key,
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'id_field' => $key,
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'title' => $row
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);
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}
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} else {
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continue;
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}
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}
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//check for multiple id's
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//this if control statement is to determine if there are multiple ids in the ID FIELD of the Ajax Widget
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if(stristr($query['id_field'], ';') != FALSE) {
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$id_field_keys = explode(';', $query['id_field']);
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if($query['get_title']) {
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//the title will always be created using the first ID FIELD
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if($row[$id_field_keys[0]]) {
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$row['title'] = ExecMethod($query['get_title'], $row[$id_field_keys[0]]);
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}
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}
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foreach($id_field_keys as $value) {
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$id_field_keys_values[] = $value.':'.$row[$value];
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}
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$row['id_field'] = implode(';',$id_field_keys_values);
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unset($id_field_keys_values);
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} else {
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if($query['id_field'] && $query['get_title']) {
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if($row[$query['id_field']] && $query['id_field'] != self::ARRAY_KEY) {
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$row['title'] = ExecMethod($query['get_title'], $row[$query['id_field']]);
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}
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}
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if($query['id_field'] != self::ARRAY_KEY) {
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$row['id_field'] = $row[$query['id_field']];
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}
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}
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// If we use htmlspecialchars, it causes issues with mixed quotes. addslashes() seems to handle it.
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$row['id_field'] = addslashes($row['id_field']);
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$data = ($query['nextmatch_template']) ? array(1=>$row) : $row;
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$widget =& CreateObject('etemplate.etemplate', $query['template']);
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$html = addslashes(str_replace("\n", '', $widget->show($data, '', $readonlys)));
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$row['title'] = addslashes($row['title']);
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$response->addScript("add_ajax_result('$result_id', '${row['id_field']}', '" . $row['title'] . "', '$html');");
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$count++;
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if($count > $GLOBALS['egw_info']['user']['preferences']['common']['maxmatchs']) {
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$response->addScript("add_ajax_result('$result_id', '', '', '" . lang("%1 more...", (count($result_list) - $count)) . "');");
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break;
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}
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}
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} else {
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$response->addScript("add_ajax_result('$result_id', '', '', '" . lang('No matches found') ."');");
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}
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return $response->getXML();
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}
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/**
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* Use a simple array to get the title
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* Values should be passed in to the widget as an array in $size['values']
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*/
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protected function array_title($id, $name) {
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if(trim($id) == '') {
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return lang('Search');
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}
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return self::$static_values[$name][$id];
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}
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/**
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* Use a simple array to get the results
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* Values should be passed in to the widget as an array in $size['values']
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*/
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protected function array_rows(&$query, &$result) {
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foreach( self::$static_values[$query['field_name']] as $key => $value) {
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if($query['search'] && stripos($value, $query['search']) === false) continue;
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$result[$key] = $value;
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}
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$count = count($result);
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$result = array_slice($result, $query['start'], $query['num_rows']);
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return $count;
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}
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}
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