added form filters - the option to preprocess form elements value

ow_core/filter.php

@@ -0,0 +1,97 @@
+<?php
+
+/**
+ * EXHIBIT A. Common Public Attribution License Version 1.0
+ * The contents of this file are subject to the Common Public Attribution License Version 1.0 (the “License”);
+ * you may not use this file except in compliance with the License. You may obtain a copy of the License at
+ * http://www.oxwall.org/license. The License is based on the Mozilla Public License Version 1.1
+ * but Sections 14 and 15 have been added to cover use of software over a computer network and provide for
+ * limited attribution for the Original Developer. In addition, Exhibit A has been modified to be consistent
+ * with Exhibit B. Software distributed under the License is distributed on an “AS IS” basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language
+ * governing rights and limitations under the License. The Original Code is Oxwall software.
+ * The Initial Developer of the Original Code is Oxwall Foundation (http://www.oxwall.org/foundation).
+ * All portions of the code written by Oxwall Foundation are Copyright (c) 2011. All Rights Reserved.
+
+ * EXHIBIT B. Attribution Information
+ * Attribution Copyright Notice: Copyright 2011 Oxwall Foundation. All rights reserved.
+ * Attribution Phrase (not exceeding 10 words): Powered by Oxwall community software
+ * Attribution URL: http://www.oxwall.org/
+ * Graphic Image as provided in the Covered Code.
+ * Display of Attribution Information is required in Larger Works which are defined in the CPAL as a work
+ * which combines Covered Code or portions thereof with code not governed by the terms of the CPAL.
+ */
+
+/**
+ * Base validator class.
+ *
+ * @author Sardar Madumarov <madumarov@gmail.com>
+ * @package ow_core
+ * @since 1.8.3
+ */
+interface OW_IFilter
+{
+
+    /**
+     * Filters 
+     *
+     * @param mixed $value
+     * @return boolean
+     */
+    function filter( $value );
+
+    /**
+     * Returns JS code to validate form element data
+     *
+     * @return string
+     */
+    function getJsFilter();
+}
+
+/**
+ * @author Sardar Madumarov <madumarov@gmail.com>
+ * @package ow_core
+ * @since 1.8.3
+ */
+class TrimFilter implements OW_IFilter
+{
+
+    /**
+     * @param string $value
+     * @return string
+     */
+    public function filter( $value )
+    {
+        return trim($value);
+    }
+
+    /**
+     * @return string
+     */
+    public function getJsFilter()
+    {
+        return "{filter : function( data ){return data.trim()}}";
+    }
+}
+
+/**
+ * @author Sardar Madumarov <madumarov@gmail.com>
+ * @package ow_core
+ * @since 1.8.3
+ */
+class StripTagsFilter implements OW_IFilter
+{
+    /**
+     * @param string $value
+     * @return string
+     */
+    public function filter( $value )
+    {
+        return strip_tags($value);
+    }
+
+    public function getJsFilter()
+    {
+        return "{filter : function( data ){console.log('aaaaaaaaaaaaaaaaaa');return $(data).text()}}";
+    }
+}