[libgee] Add missing gee/readonlymultimap.vala

[Maciej Marcin Piechotka <mpiechotka src gnome org>]

commit c9edcbf9eebb0fe263946d1963320fdf6e6fbb98
Author: Maciej Piechotka <uzytkownik2 gmail com>
Date:   Sun Feb 17 11:30:01 2013 +0000

    Add missing gee/readonlymultimap.vala

 gee/readonlymultimap.vala |  131 +++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 131 insertions(+), 0 deletions(-)
---
diff --git a/gee/readonlymultimap.vala b/gee/readonlymultimap.vala
new file mode 100644
index 0000000..214f28e
--- /dev/null
+++ b/gee/readonlymultimap.vala
@@ -0,0 +1,131 @@
+/* readonlymultimap.vala
+ *
+ * Copyright (C) 2013  Maciej Piechotka
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+
+ * This library 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
+ * Lesser General Public License for more details.
+
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+ *
+ * Author:
+ *     Maciej Piechotka <uzytkownik2 gmail com>
+ */
+
+using GLib;
+
+/**
+ * Read-only view for { link MultiMap} collections.
+ *
+ * This class decorates any class which implements the { link MultiMap}
+ * interface by making it read only. Any method which normally modify data will
+ * throw an error.
+ *
+ * @see MultiMap
+ */
+internal class Gee.ReadOnlyMultiMap<K, V> : Object, MultiMap<K, V> {
+       /**
+        * Constructs a read-only multi-set that mirrors the content of the specified
+        * list.
+        *
+        * @param multiset the multi-set to decorate.
+        */
+       public ReadOnlyMultiMap (MultiMap<K, V> multimap) {
+               this._multimap = multimap;
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public int size { get { return _multimap.size; } }
+
+       /**
+        * { inheritDoc}
+        */
+       public bool read_only { get { return true; } }
+
+       /**
+        * { inheritDoc}
+        */
+       public Set<K> get_keys () {
+               return _multimap.get_keys ();
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public MultiSet<K> get_all_keys () {
+               return _multimap.get_all_keys ();
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public Collection<V> get_values () {
+               return _multimap.get_values ();
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public bool contains (K key) {
+               return _multimap.contains (key);
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public new Collection<V> get (K key) {
+               return _multimap.get (key);
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public new void set (K key, V value) {
+               assert_not_reached ();
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public bool remove (K key, V value) {
+               assert_not_reached ();
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public bool remove_all (K key) {
+               assert_not_reached ();
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public void clear () {
+               assert_not_reached ();
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public MapIterator<K, V> map_iterator () {
+               return new ReadOnlyMap.MapIterator<K, V> (_multimap.map_iterator ());
+       }
+
+       /**
+        * { inheritDoc}
+        */
+       public virtual new MultiMap<K, V> read_only_view { owned get { return this; } }
+
+       private MultiMap<K, V> _multimap;
+}