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/* readonlybidirsortedmap.vala
*
* Copyright (C) 2012 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>
*/
/**
* Read-only view for {@link BidirSortedMap} collections.
*
* This class decorates any class which implements the {@link BidirSortedMap}
* interface by making it read only. Any method which normally modify data will
* throw an error.
*
* @see BidirSortedMap
*/
internal class Gee.ReadOnlyBidirSortedMap<K,V> : ReadOnlySortedMap<K,V>, BidirSortedMap<K,V> {
/**
* Constructs a read-only map that mirrors the content of the specified map.
*
* @param set the set to decorate.
*/
public ReadOnlyBidirSortedMap (BidirSortedMap<K,V> map) {
base (map);
}
/**
* {@inheritDoc}
*/
public Gee.BidirMapIterator<K,V> bidir_map_iterator () {
return new BidirMapIterator<K,V> ((_map as BidirSortedMap<K,V>).bidir_map_iterator ());
}
protected class BidirMapIterator<K,V> : Gee.ReadOnlyMap.MapIterator<K,V>, Gee.BidirMapIterator<K,V> {
public BidirMapIterator (Gee.BidirMapIterator<K,V> iterator) {
base (iterator);
}
public bool first () {
return (_iter as Gee.BidirMapIterator<K,V>).first ();
}
public bool previous () {
return (_iter as Gee.BidirMapIterator<K,V>).previous ();
}
public bool has_previous () {
return (_iter as Gee.BidirMapIterator<K,V>).has_previous ();
}
public bool last () {
return (_iter as Gee.BidirMapIterator<K,V>).last ();
}
}
}
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