Java tutorial
/* * Copyright 2010 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package com.google.gwt.gadgets.sample.simplegadget.client; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.gadgets.client.Gadget; import com.google.gwt.gadgets.client.NeedsSetTitle; import com.google.gwt.gadgets.client.SetTitleFeature; import com.google.gwt.gadgets.client.UserPreferences; import com.google.gwt.gadgets.client.Gadget.AllowHtmlQuirksMode; import com.google.gwt.gadgets.client.Gadget.ModulePrefs; import com.google.gwt.gadgets.client.Gadget.UseLongManifestName; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.RootLayoutPanel; /** * Sample gadget from the Getting Started manual. */ @ModulePrefs(title = "Original Title", author = "yournamehere", author_email = "yournamehere@gmail.com") @UseLongManifestName(false) @AllowHtmlQuirksMode(false) public class SimpleGadget extends Gadget<UserPreferences> implements NeedsSetTitle { int titleIndex = 0; String[] titles = { "NeedsTitle Example", "Hello World!", "Goodbye World!" }; SetTitleFeature titleFeature; @Override protected void init(UserPreferences preferences) { Button changeTitleButton = new Button("Change Title"); changeTitleButton.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { titleFeature.setTitle(titles[titleIndex++ % titles.length]); } }); RootLayoutPanel.get().add(changeTitleButton); } public void initializeFeature(SetTitleFeature feature) { this.titleFeature = feature; } }