egroupware/etemplate/inc/class.ajax_select_widget.inc.php

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<?php
/**
* eGroupWare eTemplate Extension - AJAX Select Widget
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage extensions
* @link http://www.egroupware.org
* @author Nathan Gray <nathangray@sourceforge.net>
* @version $Id$
*/
/**
* AJAX Select Widget
*
* Using AJAX, this widget allows a type-ahead find similar to a ComboBox, where as the user enters information,
* a drop-down box is populated with the n closest matches. If the user clicks on an item in the drop-down, that
* value is selected.
* n is the maximum number of results set in the user's preferences.
* The user is restricted to selecting values in the list.
* This widget can get data from any function that can provide data to a nextmatch widget.
* This widget is generating html, so it does not work (without an extra implementation) in an other UI
*/
class ajax_select_widget
{
var $public_functions = array(
'pre_process' => True,
'post_process' => True,
'ajax_search' => True,
);
var $human_name = 'AJAX Select'; // this is the name for the editor
private $debug = false;
function ajax_select_widget($ui='')
{
switch($ui)
{
case '':
case 'html':
$this->ui = 'html';
break;
default:
echo "UI='$ui' not implemented";
}
return 0;
}
/**
* pre-processing of the extension
*
* This function is called before the extension gets rendered
*
* @param string $name form-name of the control
* @param mixed &$value value / existing content, can be modified
* @param array &$cell array with the widget, can be modified for ui-independent widgets
* @param array &$readonlys names of widgets as key, to be made readonly
* @param mixed &$extension_data data the extension can store persisten between pre- and post-process
* @param object &$tmpl reference to the template we belong too
* @return boolean true if extra label is allowed, false otherwise
*/
function pre_process($name,&$value,&$cell,&$readonlys,&$extension_data,&$tmpl)
{
if($this->debug) {
echo __METHOD__ . '<br />';
printf("Name:%20s<br />", $name);
echo 'Value:';
_debug_array($value);
echo 'Cell:';
_debug_array($cell);
echo 'Readonlys:';
_debug_array($readonlys);
echo 'Extension_data:';
_debug_array($extension_data);
}
// Get Options
if(!is_array($cell['size'])) {
list(
$options['get_rows'],
$options['get_title'],
$options['id_field'],
$options['template'],
$options['filter'],
$options['filter2'],
$options['link'],
$options['icon']
) = explode(',', $cell['size']);
} else {
$options = $cell['size'];
}
if(is_array($value)) {
$options = array_merge($options, $value);
}
if(!$options['template']) {
$options['template'] = 'etemplate.ajax_select_widget.row';
}
$onchange = ($cell['onchange'] ? $cell['onchange'] : 'false');
// Set current value
if(!is_array($value)) {
$current_value = $value;
} elseif($value[$options['id_field']]) {
$current_value = $value[$options['id_field']];
}
list($title_app, $title_class, $title_method) = explode('.', $options['get_title']);
if($title_app && $title_class) {
if (is_object($GLOBALS[$title_class])) { // use existing instance (put there by a previous CreateObject)
$title_obj =& $GLOBALS[$title_class];
} else {
$title_obj =& CreateObject($title_app . '.' . $title_class);
}
}
if(!is_object($title_obj) || !method_exists($title_obj,$title_method)) {
echo "$entry_app.$entry_class.$entry_method is not a valid method for getting the title";
} elseif($current_value) {
$title = $title_obj->$title_method($current_value);
}
// Check get_rows method
list($get_rows_app, $get_rows_class, $get_rows_method) = explode('.', $options['get_rows']);
if($get_rows_app && $get_rows_class) {
if (is_object($GLOBALS[$get_rows_class])) { // use existing instance (put there by a previous CreateObject)
$get_rows_obj =& $GLOBALS[$get_rows_class];
} else {
$get_rows_obj =& CreateObject($get_rows_app . '.' . $get_rows_class);
}
if(!is_object($get_rows_obj) || !method_exists($get_rows_obj, $get_rows_method)) {
echo "$get_rows_app.$get_rows_class.$get_rows_method is not a valid method for getting the rows";
}
}
// Set up widget
$cell['type'] = 'template';
$cell['size'] = $cell['name'];
$value = array('value' => $current_value, 'search' => $title);
$widget =& new etemplate('etemplate.ajax_select_widget');
$widget->no_onclick = True;
// Link if readonly & link is set
$search =& $widget->get_widget_by_name('search');
if(($cell['readonly'] || $readonlys['search']) && $options['link']) {
$search['type'] = 'label';
$search['no_lang'] = 1;
$search['size'] = ',' . $options['link'];
} else {
$search['type'] = 'text';
$search['size'] = '';
}
// Icon
$icon =& $widget->get_widget_by_path('/0/1A');
$icon['name'] = $options['icon'];
$cell['obj'] = &$widget;
// Save options for post_processing
$extension_data = $options;
$extension_data['required'] = $cell['required'];
// xajax
$GLOBALS['egw_info']['flags']['include_xajax'] = True;
// JavaScript
if(!is_object($GLOBALS['egw']->js)) {
$GLOBALS['egw']->js =& CreateObject('phpgwapi.javascript');
}
$options = $GLOBALS['egw']->js->convert_phparray_jsarray("options['$name']", $options, true);
$GLOBALS['egw']->js->set_onload("if(!options) { var options = new Object();}\n $options;\n ajax_select_widget_setup('$name', '$onchange', options['$name']); ");
$GLOBALS['egw']->js->validate_file('', 'ajax_select', 'etemplate');
return True; // no extra label
}
function post_process($name,&$value,&$extension_data,&$loop,&$tmpl,$value_in)
{
//echo "<p>ajax_select_widget.post_process: $name = "; _debug_array($value_in);
if(!is_array($value_in)) {
$value_in = array();
}
// They typed something in, but didn't choose a result
if(!$value_in['value'] && $value_in['search']) {
list($get_rows_app, $get_rows_class, $get_rows_method) = explode('.', $extension_data['get_rows']);
if($get_rows_app && $get_rows_class) {
if (is_object($GLOBALS[$get_rows_class])) { // use existing instance (put there by a previous CreateObject)
$get_rows_obj =& $GLOBALS[$get_rows_class];
} else {
$get_rows_obj =& CreateObject($get_rows_app . '.' . $get_rows_class);
}
if(!is_object($get_rows_obj) || !method_exists($get_rows_obj, $get_rows_method)) {
echo "$get_rows_app.$get_rows_class.$get_rows_method is not a valid method for getting the rows";
} else {
$query = $extension_data + $value_in;
$count = $get_rows_obj->$get_rows_method($query, $results);
if($count == 1) {
$value = $results[0][$extension_data['id_field']];
return true;
} elseif ($count > 1) {
$GLOBALS['egw_info']['etemplate']['validation_errors'][$name] = lang("More than 1 match for '%1'",$value_in['search']);
$loop = true;
return false;
} else {
$value = $value_in['search'];
return true;
}
}
}
} elseif (!$value_in['value'] && !$value_in['search']) {
$value = null;
$loop = $GLOBALS['egw_info']['etemplate']['loop'] || $extension_data['required'];
return !$extension_data['required'];
} else {
$value = $value_in['value'];
$loop = $GLOBALS['egw_info']['etemplate']['loop'] || false;
return true;
}
}
function ajax_search($id, $value, $set_id, $query) {
$base_id = substr($id, 0, strrpos($id, '['));
$result_id = ($set_id ? $set_id : $base_id . '[results]');
$response = new xajaxResponse();
if($query['get_rows']) {
list($app, $class, $method) = explode('.', $query['get_rows']);
$this->bo = CreateObject($app . '.' . $class);
unset($query['get_rows']);
} else {
return $response->getXML();
}
// Expand lists
foreach($query as $key => $row) {
if(strpos($row, ',')) {
$query[$key] = explode(',', $row);
}
// sometimes it sends 'null' (not null)
if($row == 'null') {
unset($query[$key]);
}
}
$query['search'] = $value;
if(is_object($this->bo)) {
$count = $this->bo->$method($query, $result_list);
}
if(is_array($count)) {
$count = count($result_list);
}
$response->addScript("remove_ajax_results('$result_id')");
if($count > 0) {
$response->addScript("add_ajax_result('$result_id', '', '', '" . lang('Select') ."');");
$count = 0;
if(!$query['template'] || $query['template'] == 'etemplate.ajax_select_widget.row') {
$query['template'] = 'etemplate.ajax_select_widget.row';
}
foreach($result_list as $key => &$row) {
if(!is_array($row)) {
continue;
}
if($query['id_field'] && $query['get_title']) {
if($row[$query['id_field']]) {
$row['title'] = ExecMethod($query['get_title'], $row[$query['id_field']]);
}
}
$data = ($query['nextmatch_template']) ? array(1=>$row) : $row;
$widget =& CreateObject('etemplate.etemplate', $query['template']);
$html = addslashes(str_replace("\n", '', $widget->show($data)));
$row['title'] = htmlspecialchars(addslashes($row['title']));
$response->addScript("add_ajax_result('$result_id', '${row[$query['id_field']]}', '" . $row['title'] . "', '$html');");
$count++;
if($count > $GLOBALS['egw_info']['user']['preferences']['common']['maxmatchs']) {
$response->addScript("add_ajax_result('$result_id', '', '" . lang("%1 more...", (count($result_list) - $count)) . "');");
break;
}
}
} else {
$response->addScript("add_ajax_result('$result_id', '', '', '" . lang('No matches found') ."');");
}
return $response->getXML();
}
}
?>