1 /* 2 * Copyright (C) 2014 The Android Open Source Project 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.inputmethod.accessibility; 18 19 import android.content.Context; 20 import android.os.Handler; 21 import android.os.Message; 22 23 import com.android.inputmethod.keyboard.Key; 24 import com.android.inputmethod.latin.R; 25 26 // Handling long press timer to show a more keys keyboard. 27 final class AccessibilityLongPressTimer extends Handler { 28 public interface LongPressTimerCallback { performLongClickOn(Key key)29 public void performLongClickOn(Key key); 30 } 31 32 private static final int MSG_LONG_PRESS = 1; 33 34 private final LongPressTimerCallback mCallback; 35 private final long mConfigAccessibilityLongPressTimeout; 36 AccessibilityLongPressTimer(final LongPressTimerCallback callback, final Context context)37 public AccessibilityLongPressTimer(final LongPressTimerCallback callback, 38 final Context context) { 39 super(); 40 mCallback = callback; 41 mConfigAccessibilityLongPressTimeout = context.getResources().getInteger( 42 R.integer.config_accessibility_long_press_key_timeout); 43 } 44 45 @Override handleMessage(final Message msg)46 public void handleMessage(final Message msg) { 47 switch (msg.what) { 48 case MSG_LONG_PRESS: 49 cancelLongPress(); 50 mCallback.performLongClickOn((Key)msg.obj); 51 return; 52 default: 53 super.handleMessage(msg); 54 return; 55 } 56 } 57 startLongPress(final Key key)58 public void startLongPress(final Key key) { 59 cancelLongPress(); 60 final Message longPressMessage = obtainMessage(MSG_LONG_PRESS, key); 61 sendMessageDelayed(longPressMessage, mConfigAccessibilityLongPressTimeout); 62 } 63 cancelLongPress()64 public void cancelLongPress() { 65 removeMessages(MSG_LONG_PRESS); 66 } 67 } 68