001package votorola.a.count.gwt; // Copyright 2012, Michael Allan.  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE.
002
003import com.google.gwt.user.client.rpc.AsyncCallback;
004import votorola.a.web.gwt.*;
005
006
007/** A callback for requests from the count engine.
008  */
009public abstract class CountCallback<T> implements AsyncCallback<T>
010{
011
012
013    /** Constructs a CountCallback.
014      *
015      *     @param _loc the {@linkplain CountCache#requestCount_loc(String,StringBuilder)
016      *       request location}.
017      *     @param _warningSink the warning sink to use in the event of a {@linkplain
018      *       #onFailure(Throwable) failure}.
019      */
020    public CountCallback( String _loc, WarningSink _warningSink )
021    {
022        loc = _loc;
023        warningSink = _warningSink;
024    }
025
026
027
028   // - A s y n c - C a l l b a c k ------------------------------------------------------
029
030
031    /** Called when the request completes abnormally.  The implementation of this method
032      * in class CountCallback appends an informative message to the {@linkplain
033      * CountCallback#CountCallback(String,WarningSink) warning sink}.
034      */
035    public void onFailure( final Throwable x )
036    {
037        warningSink.addWarning( App.i().mesA().count_gwt_CountCallback( x, loc ));
038    }
039
040
041
042//// P r i v a t e ///////////////////////////////////////////////////////////////////////
043
044
045    private final String loc;
046
047
048
049    private final WarningSink warningSink;
050
051
052}