1 /* 2 * Copyright (C) 2022 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.apps.inputmethod.simpleime; 18 19 import android.inputmethodservice.InputMethodService; 20 import android.os.SystemClock; 21 import android.util.Log; 22 import android.view.KeyEvent; 23 import android.view.View; 24 25 import androidx.annotation.NonNull; 26 27 import com.android.apps.inputmethod.simpleime.ims.InputMethodServiceWrapper; 28 29 /** A simple implementation of an {@link InputMethodService}. */ 30 public final class SimpleInputMethodService extends InputMethodServiceWrapper { 31 32 private static final String TAG = "SimpleIMS"; 33 34 @Override onCreateInputView()35 public View onCreateInputView() { 36 Log.i(TAG, "onCreateInputView()"); 37 final var simpleKeyboard = new SimpleKeyboardView(this); 38 simpleKeyboard.setKeyPressListener(this::onKeyPress); 39 return simpleKeyboard; 40 } 41 42 /** 43 * Called when a key is pressed. 44 * 45 * @param keyCodeName the keycode of the key, as a string. 46 * @param metaState the flags indicating which meta keys are currently pressed. 47 */ onKeyPress(@onNull String keyCodeName, int metaState)48 private void onKeyPress(@NonNull String keyCodeName, int metaState) { 49 final int keyCode = KeyCodeConstants.getKeyCode(keyCodeName); 50 Log.v(TAG, "onKeyPress: " + keyCode); 51 if (keyCode != KeyEvent.KEYCODE_UNKNOWN) { 52 final var ic = getCurrentInputConnection(); 53 if (ic != null) { 54 final var downTime = SystemClock.uptimeMillis(); 55 ic.sendKeyEvent(new KeyEvent(downTime, downTime, KeyEvent.ACTION_DOWN, keyCode, 56 0 /* repeat */, KeyCodeConstants.isAlphaKeyCode(keyCode) ? metaState : 0)); 57 } 58 } 59 } 60 } 61