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msd2/tracking/piwik/libs/HTML/QuickForm2/Rule/Empty.php

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+<?php
+/**
+ * Rule checking that the field is empty
+ *
+ * PHP version 5
+ *
+ * LICENSE:
+ *
+ * Copyright (c) 2006-2010, Alexey Borzov <avb@php.net>,
+ *                          Bertrand Mansion <golgote@mamasam.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *    * Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    * Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *    * The names of the authors may not be used to endorse or promote products
+ *      derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @category   HTML
+ * @package    HTML_QuickForm2
+ * @author     Alexey Borzov <avb@php.net>
+ * @author     Bertrand Mansion <golgote@mamasam.com>
+ * @license    http://opensource.org/licenses/bsd-license.php New BSD License
+ * @version    SVN: $Id: Empty.php 299480 2010-05-19 06:55:03Z avb $
+ * @link       http://pear.php.net/package/HTML_QuickForm2
+ */
+
+/**
+ * Base class for HTML_QuickForm2 rules
+ */
+// require_once 'HTML/QuickForm2/Rule.php';
+
+/**
+ * Rule checking that the field is empty
+ *
+ * Handles both simple form fields and file uploads, the latter are considered
+ * valid iff no file upload was attempted.
+ *
+ * The rule doesn't make much sense if used separately, but can be very helpful
+ * if chained:
+ * <code>
+ * $spamCheck->addRule('empty')
+ *           ->or_($email->createRule('nonempty', 'Supply a valid email if you want to receive our spam')
+ *                       ->and_($email->createRule('email')));
+ * </code>
+ *
+ * @category   HTML
+ * @package    HTML_QuickForm2
+ * @author     Alexey Borzov <avb@php.net>
+ * @author     Bertrand Mansion <golgote@mamasam.com>
+ * @version    Release: @package_version@
+ */
+class HTML_QuickForm2_Rule_Empty extends HTML_QuickForm2_Rule
+{
+    protected function validateOwner()
+    {
+        $value = $this->owner->getValue();
+        if (!$this->owner instanceof HTML_QuickForm2_Element_InputFile) {
+            return 0 == strlen($value);
+        } else {
+            return isset($value['error']) && UPLOAD_ERR_NO_FILE == $value['error'];
+        }
+    }
+
+    protected function getJavascriptCallback()
+    {
+        return "function() { return " . $this->owner->getJavascriptValue() . " == ''; }";
+    }
+}
+
+?>