| /* |
| * 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; |
| |
| import com.google.gwt.event.shared.EventHandler; |
| |
| /** |
| * Base class for Key events. The native keyboard events are somewhat a mess |
| * (http://www.quirksmode.org/js/keys.html), we do some trivial normalization |
| * here, but do not attempt any complex patching, so user be warned. |
| * |
| * @param <H> The event handler type |
| */ |
| public abstract class KeyEvent<H extends EventHandler> extends DomEvent<H> { |
| |
| /** |
| * Is the <code>alt</code> key down? |
| * |
| * @return whether the alt key is down |
| */ |
| public boolean isAltKeyDown() { |
| return getNativeEvent().getAltKey(); |
| } |
| |
| /** |
| * Does this event have any modifier keys down? Specifically. is the control, |
| * meta, shift, or alt key currently pressed? |
| * |
| * @return whether this event have any modifier key down |
| */ |
| public boolean isAnyModifierKeyDown() { |
| return isControlKeyDown() || isShiftKeyDown() || isMetaKeyDown() |
| || isAltKeyDown(); |
| } |
| |
| /** |
| * Is the <code>control</code> key down? |
| * |
| * @return whether the control key is down |
| */ |
| public boolean isControlKeyDown() { |
| return getNativeEvent().getCtrlKey(); |
| } |
| |
| /** |
| * Is the <code>meta</code> key down? |
| * |
| * @return whether the meta key is down |
| */ |
| public boolean isMetaKeyDown() { |
| return getNativeEvent().getMetaKey(); |
| } |
| |
| /** |
| * Is the <code>shift</code> key down? |
| * |
| * @return whether the shift key is down |
| */ |
| public boolean isShiftKeyDown() { |
| return getNativeEvent().getShiftKey(); |
| } |
| } |