1 /** 2 * Copyright (c) 2014, Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.mail.utils; 18 19 import android.view.KeyEvent; 20 21 /** 22 * Utility class for keyboard navigation. 23 */ 24 public class KeyboardUtils { 25 /** 26 * Determine if the provided keycode is toward the start direction of the normal layout. 27 * This is used for keyboard navigation since the layouts are flipped for RTL. 28 */ 29 public static boolean isKeycodeDirectionStart(int keyCode, boolean isRtl) { 30 return (!isRtl && keyCode == KeyEvent.KEYCODE_DPAD_LEFT) || 31 (isRtl && keyCode == KeyEvent.KEYCODE_DPAD_RIGHT); 32 } 33 34 /** 35 * Determine if the provided keycode is toward the end direction of the normal layout. 36 * This is used for keyboard navigation since the layouts are flipped for RTL. 37 */ 38 public static boolean isKeycodeDirectionEnd(int keyCode, boolean isRtl) { 39 return (isRtl && keyCode == KeyEvent.KEYCODE_DPAD_LEFT) || 40 (!isRtl && keyCode == KeyEvent.KEYCODE_DPAD_RIGHT); 41 } 42 } 43
