1 files changed, 70 insertions, 0 deletions
diff --git a/modules/gallery/libraries/Breadcrumb.php b/modules/gallery/libraries/Breadcrumb.php
new file mode 100644
index 00000000..e151890d
--- /dev/null
+++ b/modules/gallery/libraries/Breadcrumb.php
@@ -0,0 +1,70 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2011 Bharat Mediratta
+ *
+ * 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.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class Breadcrumb_Core {
+  public $title;
+  public $url;
+  public $first;
+  public $last;
+
+  static function instance($title, $url) {
+    return new Breadcrumb($title, $url);
+  }
+
+  public function __construct($title, $url) {
+    $this->title = $title;
+    $this->url = $url;
+    $this->first = false;
+    $this->last = false;
+  }
+
+  /**
+   * Return an array of Breadcrumb instances build from the parents of a given item.
+   * The first and last Breadcrumb instances will be marked first/last as appropriate.
+   * Each breadcrumb will have a ?show= query parameter that refers to the id of the next
+   * item in line.
+   *
+   * @return array Breadcrumb instances
+   */
+  static function array_from_item_parents($item) {
+    if ($item->id == item::root()->id) {
+      return array();
+    }
+
+    $bc = array_merge($item->parents()->as_array(), array($item));
+    for ($i = 0; $i < count($bc) - 1; $i++) {
+      $bc[$i] = new Breadcrumb($bc[$i]->title, $bc[$i]->url("show={$bc[$i+1]->id}"));
+    }
+    $bc[$i] = new Breadcrumb($item->title, $item->url());
+
+    $bc[0]->set_first();
+    end($bc)->set_last();
+    return $bc;
+  }
+
+  public function set_first() {
+    $this->first = true;
+    return $this;
+  }
+
+  public function set_last() {
+    $this->last = true;
+    return $this;
+  }
+}