1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * 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, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 17 package com.android.inputmethod.keyboard.internal; 18 19 import android.util.Log; 20 21 import com.android.inputmethod.keyboard.KeyboardSwitcher; 22 23 public class ModifierKeyState { 24 protected static final String TAG = "ModifierKeyState"; 25 protected static final boolean DEBUG = KeyboardSwitcher.DEBUG_STATE; 26 27 protected static final int RELEASING = 0; 28 protected static final int PRESSING = 1; 29 protected static final int MOMENTARY = 2; 30 31 protected final String mName; 32 protected int mState = RELEASING; 33 ModifierKeyState(String name)34 public ModifierKeyState(String name) { 35 mName = name; 36 } 37 onPress()38 public void onPress() { 39 final int oldState = mState; 40 mState = PRESSING; 41 if (DEBUG) 42 Log.d(TAG, mName + ".onPress: " + toString(oldState) + " > " + this); 43 } 44 onRelease()45 public void onRelease() { 46 final int oldState = mState; 47 mState = RELEASING; 48 if (DEBUG) 49 Log.d(TAG, mName + ".onRelease: " + toString(oldState) + " > " + this); 50 } 51 onOtherKeyPressed()52 public void onOtherKeyPressed() { 53 final int oldState = mState; 54 if (oldState == PRESSING) 55 mState = MOMENTARY; 56 if (DEBUG) 57 Log.d(TAG, mName + ".onOtherKeyPressed: " + toString(oldState) + " > " + this); 58 } 59 isPressing()60 public boolean isPressing() { 61 return mState == PRESSING; 62 } 63 isReleasing()64 public boolean isReleasing() { 65 return mState == RELEASING; 66 } 67 isMomentary()68 public boolean isMomentary() { 69 return mState == MOMENTARY; 70 } 71 72 @Override toString()73 public String toString() { 74 return toString(mState); 75 } 76 toString(int state)77 protected String toString(int state) { 78 switch (state) { 79 case RELEASING: return "RELEASING"; 80 case PRESSING: return "PRESSING"; 81 case MOMENTARY: return "MOMENTARY"; 82 default: return "UNKNOWN"; 83 } 84 } 85 } 86