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 */
020package org.sonar.wsclient.gwt;
021
022import com.google.gwt.core.client.JavaScriptObject;
023import com.google.gwt.user.client.ui.Widget;
024import org.sonar.wsclient.services.Model;
025
026public 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}