Add pieform element for multiple files

Signed-off-by: Richard Mansfield <richardm@catalyst.net.nz>

htdocs/lib/form/elements/files.php

+<?php
+/**
+ * Mahara: Electronic portfolio, weblog, resume builder and social networking
+ * Copyright (C) 2006-2009 Catalyst IT Ltd and others; see:
+ *                         http://wiki.mahara.org/Contributors
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ * @package    mahara
+ * @subpackage form-element
+ * @author     Catalyst IT Ltd
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
+ * @copyright  (C) 2006-2009 Catalyst IT Ltd http://catalyst.net.nz
+ *
+ */
+
+defined('INTERNAL') || die();
+
+/**
+ * Multiple file elements
+ *
+ * @param array    $element The element to render
+ * @param Pieform  $form    The form to render the element for
+ * @return string           The HTML for the element
+ */
+function pieform_element_files(Pieform $form, $element) {
+    $smarty = smarty_core();
+
+    $smarty->left_delimiter = '{{';
+    $smarty->right_delimiter = '}}';
+
+    $value = $form->get_value($element);
+
+    if (!is_array($value) && isset($element['defaultvalue']) && is_array($element['defaultvalue'])) {
+        $value = $element['defaultvalue'];
+    }
+
+    $smarty->assign('name', $form->get_name() . '_' . $element['name']);
+
+    return $smarty->fetch('form/files.tpl');
+}
+
+function pieform_element_files_get_value(Pieform $form, $element) {
+    $name = $form->get_name() . '_' . $element['name'];
+
+    $value = array();
+
+    foreach ($_FILES as $k => $v) {
+        if (preg_match('/^' . $name . '_files_\d+$/', $k) && !empty($v['name'])) {
+            $value[] = $v;
+        }
+    }
+
+    return $value;
+}
+
+function pieform_element_files_set_attributes($element) {/*{{{*/
+    $element['needsmultipart'] = true;
+    return $element;
+}/*}}}*/

htdocs/theme/raw/templates/form/files.tpl

+<script type="text/javascript">
+    var {{$name}}_current = 0;
+    var {{$name}}_newrefinput;
+    var {{$name}}_newref;
+
+    function {{$name}}_new() {
+        {{$name}}_current++;
+        {{$name}}_newrefinput = INPUT({'type': 'file', 'name': '{{$name}}_files_' + {{$name}}_current});
+        var {{$name}}_newref = DIV(null,{{$name}}_newrefinput);
+
+        appendChildNodes('{{$name}}_list', {{$name}}_newref);
+
+        {{$name}}_newrefinput.focus();
+    }
+</script>
+<div id="{{$name}}_list">
+    <input type="file" name="{{$name}}_files_0"/>
+</div>
+<a href="" onclick="{{$name}}_new(); return false;">[+]</a>