001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2012 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.client.persistence.javafx;
022    
023    import javafx.collections.ObservableSet;
024    import javafx.collections.SetChangeListener;
025    
026    import org.granite.client.persistence.LazyableCollection;
027    
028    /**
029     * @author William DRAI
030     */
031    public class SetChangeListenerWrapper<T> implements SetChangeListener<T> {
032        private final ObservableSet<T> wrappedSet;
033        private final SetChangeListener<T> wrappedListener;
034        
035        public SetChangeListenerWrapper(ObservableSet<T> wrappedSet, SetChangeListener<T> wrappedListener) {
036            this.wrappedSet = wrappedSet;
037            this.wrappedListener = wrappedListener;
038        }
039        
040        @Override
041        public void onChanged(SetChangeListener.Change<? extends T> change) {
042            if (!((LazyableCollection)wrappedSet).isInitialized())
043                return;
044            SetChangeListener.Change<T> wrappedChange = new SetChangeWrapper<T>(wrappedSet, change);
045            wrappedListener.onChanged(wrappedChange);
046        }        
047    }