1 files changed, 57 insertions, 0 deletions
diff --git a/lib/classes/LinkButton.class.php b/lib/classes/LinkButton.class.php
new file mode 100644
index 0000000..2667862
--- /dev/null
+++ b/lib/classes/LinkButton.class.php
@@ -0,0 +1,57 @@
+<?php
+/*
+ * Copyright (c) 2011 mlunzena@uos.de, aklassen@uos.de
+ *
+ * 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 2 of
+ * the License, or (at your option) any later version.
+ */
+
+
+namespace Studip;
+
+/**
+ * Represents an HTML link element.
+ */
+class LinkButton extends Interactable
+{
+    /**
+     * Initialize a Hyperlink used as button.
+     * The second parameter is used as @href attribute of the
+     * resulting <a> HTML element.
+     *
+     * @param string $label       the label of the <a> element
+     * @param string $url         the @href element of the <a> element
+     * @param array  $attributes  the attributes of the <a> element
+     */
+    protected function initialize($label, $url, $attributes)
+    {
+        $this->attributes['href'] = $url ?: \URLHelper::getURL();
+    }
+
+    /**
+     * @return string returns a HTML representation of this hyperlink.
+     */
+    public function __toString()
+    {
+        // add "button" to attribute @class
+        @$this->attributes["class"] .= " button";
+
+        // add tabindex of zero to make buttons accesible when tabbing
+        if (!isset($this->attributes['tabindex'])) {
+            $this->attributes['tabindex'] = '0';
+        }
+
+        $attributes = [];
+        ksort($this->attributes);
+        foreach ($this->attributes as $k => $v) {
+            $attributes[] = sprintf(' %s="%s"', $k, htmlReady($v));
+        }
+
+        // TODO: URLHelper...?!
+        return sprintf('<a%s>%s</a>',
+                       join('', $attributes),
+                       htmlReady($this->label));
+    }
+}