ajax_form.php

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<?php

class dataface_actions_ajax_form {

        function handle(&$params){

                $app = Dataface_Application::getInstance();
                header('Content-type: text/html; charset='.$app->_conf['oe']);
                $record =& $app->getRecord();
                $query =& $app->getQuery();
                
                if ( isset($_REQUEST['-form-id']) ) $formid = $_REQUEST['-form-id'];
                else $formid = 'ajax-form-'.rand();
                
                // First let's figure out what kind of form this is
                $form_type = @$_REQUEST['-form-type'];
                $form = null;
                
                if ( isset($_REQUEST['-fields']) ){
                        $fields = explode(',', $_REQUEST['-fields']);
                } else {
                        $fields = null;
                }
                
                switch ($form_type){
                        case 'new':
                                
                                $form = df_create_new_record_form($query['-table'], $fields);
                                $form->_build();
                                break;
                        
                        case 'edit':
                                $form = df_create_edit_record_form($query['-table'], $fields);
                                break;
                                
                        case 'new_related_record':
                                $form = df_create_new_related_record_form($record, $query['-relationship'], $fields);
                                break;
                                
                        case 'existing_related_record':
                                $form = df_create_existing_related_record_form($record, $query['-relationship']);
                                break;
                                
                        case 'composite':
                                import('Dataface/CompositeForm.php');
                                $form = new Dataface_CompositeForm($fields);
                                $form->build();
                                break;
                                
                        default:
                                @include_once('forms/'.$form_type.'.php');
                                if ( !class_exists('forms_'.$form_type) ){
                                        return PEAR::raiseError('Could not find form of type "'.$form_type.'".', DATAFACE_E_ERROR);
                                }
                                $classname = 'forms_'.$form_type;
                                $form = new $classname($fields);
                                break;
                
                }
                
                
                // We want the form to be submitted to the embedded iframe
                $form->updateAttributes(array('target'=>$formid.'-target', 'accept-charset'=>$app->_conf['ie']));
                $formparams = preg_grep('/^-[^\-].*/', array_keys($query));
                foreach ( $formparams as $param){
                        $form->addElement('hidden',$param);
                        $form->setDefaults(array($param=>$query[$param]));
                }
                $form->addElement('hidden', '-form-id');
                $form->setDefaults(array('-form-id'=>$formid));
                
                // Now that we have our form, we can do our thing with it.
                if ( $form->validate() ){
                        /*
                         *
                         * The form was submitted and it validated ok.  We now process it (ie: save its contents).
                         *
                         */
                        $app->clearMessages();
                        $result = $form->process( array( &$form, 'save') );
                        $success = true;
                        $response =& Dataface_Application::getResponse();
                        
                        if ( !$result ){
                                trigger_error("Error occurred in save: ".mysql_error( $app->db()).Dataface_Error::printStackTrace(), E_USER_ERROR);
                                exit;
                        } else if ( PEAR::isError($result) && !Dataface_Error::isNotice($result) ){

                                if ( Dataface_Error::isDuplicateEntry($result) ){
                                        return $result;
                                        
                                } else {

                                        trigger_error($result->toString(). Dataface_Error::printStackTrace(), E_USER_ERROR);
                                        exit;
                                }
                        } else if ( Dataface_Error::isNotice($result) ){
                                $app->addError($result);
                                $success = false;
                        }
                        
                        
                        if ( $success ){
                                import('Dataface/Utilities.php');
                                Dataface_Utilities::fireEvent('after_action_ajax_form');
                                
                                $msg = implode("\n", $app->getMessages());
                                //$msg =@$response['--msg'];
                                $msg = urlencode(
                                        Dataface_LanguageTool::translate(
                                                /* i18n id */
                                                'Record successfully saved',
                                                /* Default success message */
                                                "Record successfully saved.<br>"
                                        ).$msg
                                );
                                // We need to output the success content.
                                // This could be in any of the following formats:
                                //      1. HTML --- actually not yet.. let's just do JSON
                                //      2. JSON
                                //      3. XML --- not yet.. just JSON for now.
                                
                                $targetid = @$_REQUEST['-target-id'];
                                
                                // This should:
                                // 1. Get the target element.
                                // 2. Go through the element's subtree and replace
                                //              values that have been changed.  How do we know what
                                //              values have been changed.
                                // 
                                if ( method_exists($form, 'htmlValues') ){
                                        if ( method_exists($form, 'changedFields') ){
                                                $changed_fields = $form->changedFields();
                                        } else {
                                                $changed_fields = null;
                                        }
                                        
                                        // Convert the values to JSON
                                        $changed_values = $form->htmlValues($changed_fields);
                                        import('Services/JSON.php');
                                        $json = new Services_JSON();
                                        $changed_values_json = $json->encode($changed_values);
                                        
                                } else {
                                        $changed_values_json = '{}';
                                }

                                echo <<<END
<html><body><script language="javascript"><!--
        
        //self.onload =  function(){
                //parent.handleEditableResponse('$targetid', $changed_values_json);
                var targetel = parent.document.getElementById('$targetid');
                targetel.handleResponse('$targetid', $changed_values_json);
                targetel.onclick=parent.makeEditable;
                targetel.onmouseover=targetel.old_onmouseover;
                targetel.edit_form.parentNode.removeChild(targetel.edit_form);
        
        //}
        
        
//--></script></body></html>
END;
                                exit;
                                                
                        }
                }
                
                import('Dataface/FormTool.php');
                $formTool = new Dataface_FormTool();
                ob_start();
                if (is_array($fields) and (count($fields) == 1) and (strpos($fields[0], '#') !== false) ){
                        $singleField = $fields[0];
                } else {
                        $singleField = false;
                }
                $formTool->display($form, null, $singleField);
                $out = ob_get_contents();
                ob_end_clean();
                        
                echo <<<END
                
                <div id="{$formid}-wrapper">
                        <iframe id="{$formid}-target" name="{$formid}-target" style="width:0px; height:0px; border: 0px"></iframe>
                        $out
                </div>
END;
                if ($form->isSubmitted()){
                        // The form has already been submitted so we must be displaying some
                        // errors.  We need to remove this stuff from inside the iframe
                        // that we are going to be inside of, and place them on the page
                        // in the correct place
                        echo <<<END
<script language="javascript"><!--
var targetel = parent.document.getElementById('{$formid}-wrapper');
var sourceel = document.getElementById('{$formid}-wrapper');
targetel.innerHTML = sourceel.innerHTML;
//--></script>
END;
                }
                
                exit;
                
        }
}
?>