| /* |
| * Copyright 2008 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.event.dom.client; |
| |
| /** |
| * Receiver used to handle all key events at once. |
| * |
| * WARNING, PLEASE READ: As this class is intended for developers who wish to |
| * handle all key events in GWT, new key handler interfaces will be added to it. |
| * Therefore, updates to GWT could cause breaking API changes. |
| * |
| */ |
| public abstract class HandlesAllKeyEvents implements KeyDownHandler, |
| KeyUpHandler, KeyPressHandler { |
| |
| /** |
| * Convenience method used to handle all key events from an event source. |
| * |
| * @param <H> receiver type, must implement all key handlers |
| * @param eventSource the event source |
| * @param reciever the receiver implementing all key handlers |
| */ |
| public static <H extends KeyDownHandler & KeyUpHandler & KeyPressHandler> void addHandlers( |
| HasAllKeyHandlers eventSource, H reciever) { |
| eventSource.addKeyDownHandler(reciever); |
| eventSource.addKeyPressHandler(reciever); |
| eventSource.addKeyUpHandler(reciever); |
| } |
| |
| /** |
| * Constructor. |
| */ |
| public HandlesAllKeyEvents() { |
| } |
| |
| /** |
| * Convenience method to handle all key events from an event source. |
| * |
| * @param source the event source |
| */ |
| public final void addKeyHandlersTo(HasAllKeyHandlers source) { |
| addHandlers(source, this); |
| } |
| } |