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Diffstat (limited to 'gee/readonlymultiset.vala')
| -rw-r--r-- | gee/readonlymultiset.vala | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gee/readonlymultiset.vala b/gee/readonlymultiset.vala new file mode 100644 index 0000000..b6404f1 --- /dev/null +++ b/gee/readonlymultiset.vala @@ -0,0 +1,57 @@ +/* readonlymultiset.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 MultiSet} collections. + * + * This class decorates any class which implements the {@link Collection} + * interface by making it read only. Any method which normally modify data will + * throw an error. + * + * @see MultiSet + */ +internal class Gee.ReadOnlyMultiSet<G> : Gee.ReadOnlyCollection<G>, MultiSet<G> { + /** + * Constructs a read-only multi-set that mirrors the content of the specified + * list. + * + * @param multiset the multi-set to decorate. + */ + public ReadOnlyMultiSet (MultiSet<G> multiset) { + base (multiset); + } + + /** + * {@inheritDoc} + */ + public int count (G item) { + return ((Gee.MultiSet<G>) _collection).count (item); + } + + /** + * {@inheritDoc} + */ + public virtual new MultiSet<G> read_only_view { owned get { return this; } } +} + |