001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2012 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.wsclient.gwt;
021    
022    import com.google.gwt.core.client.JavaScriptObject;
023    import com.google.gwt.user.client.ui.Widget;
024    import org.sonar.wsclient.services.Model;
025    
026    public abstract class AbstractCallback<MODEL extends Model> implements Callback<MODEL> {
027    
028      private Widget loadingWidget = null;
029    
030      protected AbstractCallback(Widget loadingWidget) {
031        this.loadingWidget = loadingWidget;
032      }
033    
034      protected AbstractCallback() {
035      }
036    
037      public void onResponse(MODEL result, JavaScriptObject json) {
038        hideLoadingWidget();
039        doOnResponse(result);
040      }
041    
042      protected abstract void doOnResponse(MODEL result);
043    
044      public final void onTimeout() {
045        doOnTimeout();
046        hideLoadingWidget();
047      }
048    
049      public final void onError(int errorCode, String errorMessage) {
050        doOnError(errorCode, errorMessage);
051        hideLoadingWidget();
052      }
053    
054      protected void doOnError(int errorCode, String errorMessage) {
055    
056      }
057    
058      protected void doOnTimeout() {
059    
060      }
061    
062      private void hideLoadingWidget() {
063        if (loadingWidget != null) {
064          loadingWidget.removeFromParent();
065        }
066      }
067    }