1 /* 2 * Copyright (C) 2008 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 android.inputmethodservice; 18 19 import com.android.internal.os.HandlerCaller; 20 import com.android.internal.os.SomeArgs; 21 import com.android.internal.view.IInputMethodSession; 22 23 import android.content.Context; 24 import android.graphics.Rect; 25 import android.os.Bundle; 26 import android.os.Looper; 27 import android.os.Message; 28 import android.os.RemoteException; 29 import android.util.Log; 30 import android.util.SparseArray; 31 import android.view.InputChannel; 32 import android.view.InputDevice; 33 import android.view.InputEvent; 34 import android.view.InputEventReceiver; 35 import android.view.KeyEvent; 36 import android.view.MotionEvent; 37 import android.view.inputmethod.CompletionInfo; 38 import android.view.inputmethod.ExtractedText; 39 import android.view.inputmethod.InputMethodSession; 40 41 class IInputMethodSessionWrapper extends IInputMethodSession.Stub 42 implements HandlerCaller.Callback { 43 private static final String TAG = "InputMethodWrapper"; 44 45 private static final int DO_FINISH_INPUT = 60; 46 private static final int DO_DISPLAY_COMPLETIONS = 65; 47 private static final int DO_UPDATE_EXTRACTED_TEXT = 67; 48 private static final int DO_UPDATE_SELECTION = 90; 49 private static final int DO_UPDATE_CURSOR = 95; 50 private static final int DO_APP_PRIVATE_COMMAND = 100; 51 private static final int DO_TOGGLE_SOFT_INPUT = 105; 52 private static final int DO_FINISH_SESSION = 110; 53 private static final int DO_VIEW_CLICKED = 115; 54 55 HandlerCaller mCaller; 56 InputMethodSession mInputMethodSession; 57 InputChannel mChannel; 58 ImeInputEventReceiver mReceiver; 59 60 public IInputMethodSessionWrapper(Context context, 61 InputMethodSession inputMethodSession, InputChannel channel) { 62 mCaller = new HandlerCaller(context, null, 63 this, true /*asyncHandler*/); 64 mInputMethodSession = inputMethodSession; 65 mChannel = channel; 66 if (channel != null) { 67 mReceiver = new ImeInputEventReceiver(channel, context.getMainLooper()); 68 } 69 } 70 71 public InputMethodSession getInternalInputMethodSession() { 72 return mInputMethodSession; 73 } 74 75 @Override 76 public void executeMessage(Message msg) { 77 if (mInputMethodSession == null) { 78 // The session has been finished. 79 return; 80 } 81 82 switch (msg.what) { 83 case DO_FINISH_INPUT: 84 mInputMethodSession.finishInput(); 85 return; 86 case DO_DISPLAY_COMPLETIONS: 87 mInputMethodSession.displayCompletions((CompletionInfo[])msg.obj); 88 return; 89 case DO_UPDATE_EXTRACTED_TEXT: 90 mInputMethodSession.updateExtractedText(msg.arg1, 91 (ExtractedText)msg.obj); 92 return; 93 case DO_UPDATE_SELECTION: { 94 SomeArgs args = (SomeArgs)msg.obj; 95 mInputMethodSession.updateSelection(args.argi1, args.argi2, 96 args.argi3, args.argi4, args.argi5, args.argi6); 97 args.recycle(); 98 return; 99 } 100 case DO_UPDATE_CURSOR: { 101 mInputMethodSession.updateCursor((Rect)msg.obj); 102 return; 103 } 104 case DO_APP_PRIVATE_COMMAND: { 105 SomeArgs args = (SomeArgs)msg.obj; 106 mInputMethodSession.appPrivateCommand((String)args.arg1, 107 (Bundle)args.arg2); 108 args.recycle(); 109 return; 110 } 111 case DO_TOGGLE_SOFT_INPUT: { 112 mInputMethodSession.toggleSoftInput(msg.arg1, msg.arg2); 113 return; 114 } 115 case DO_FINISH_SESSION: { 116 doFinishSession(); 117 return; 118 } 119 case DO_VIEW_CLICKED: { 120 mInputMethodSession.viewClicked(msg.arg1 == 1); 121 return; 122 } 123 } 124 Log.w(TAG, "Unhandled message code: " + msg.what); 125 } 126 127 private void doFinishSession() { 128 mInputMethodSession = null; 129 if (mReceiver != null) { 130 mReceiver.dispose(); 131 mReceiver = null; 132 } 133 if (mChannel != null) { 134 mChannel.dispose(); 135 mChannel = null; 136 } 137 } 138 139 @Override 140 public void finishInput() { 141 mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_FINISH_INPUT)); 142 } 143 144 @Override 145 public void displayCompletions(CompletionInfo[] completions) { 146 mCaller.executeOrSendMessage(mCaller.obtainMessageO( 147 DO_DISPLAY_COMPLETIONS, completions)); 148 } 149 150 @Override 151 public void updateExtractedText(int token, ExtractedText text) { 152 mCaller.executeOrSendMessage(mCaller.obtainMessageIO( 153 DO_UPDATE_EXTRACTED_TEXT, token, text)); 154 } 155 156 @Override 157 public void updateSelection(int oldSelStart, int oldSelEnd, 158 int newSelStart, int newSelEnd, int candidatesStart, int candidatesEnd) { 159 mCaller.executeOrSendMessage(mCaller.obtainMessageIIIIII(DO_UPDATE_SELECTION, 160 oldSelStart, oldSelEnd, newSelStart, newSelEnd, 161 candidatesStart, candidatesEnd)); 162 } 163 164 @Override 165 public void viewClicked(boolean focusChanged) { 166 mCaller.executeOrSendMessage( 167 mCaller.obtainMessageI(DO_VIEW_CLICKED, focusChanged ? 1 : 0)); 168 } 169 170 @Override 171 public void updateCursor(Rect newCursor) { 172 mCaller.executeOrSendMessage( 173 mCaller.obtainMessageO(DO_UPDATE_CURSOR, newCursor)); 174 } 175 176 @Override 177 public void appPrivateCommand(String action, Bundle data) { 178 mCaller.executeOrSendMessage( 179 mCaller.obtainMessageOO(DO_APP_PRIVATE_COMMAND, action, data)); 180 } 181 182 @Override 183 public void toggleSoftInput(int showFlags, int hideFlags) { 184 mCaller.executeOrSendMessage( 185 mCaller.obtainMessageII(DO_TOGGLE_SOFT_INPUT, showFlags, hideFlags)); 186 } 187 188 @Override 189 public void finishSession() { 190 mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_FINISH_SESSION)); 191 } 192 193 private final class ImeInputEventReceiver extends InputEventReceiver 194 implements InputMethodSession.EventCallback { 195 private final SparseArray<InputEvent> mPendingEvents = new SparseArray<InputEvent>(); 196 197 public ImeInputEventReceiver(InputChannel inputChannel, Looper looper) { 198 super(inputChannel, looper); 199 } 200 201 @Override 202 public void onInputEvent(InputEvent event) { 203 if (mInputMethodSession == null) { 204 // The session has been finished. 205 finishInputEvent(event, false); 206 return; 207 } 208 209 final int seq = event.getSequenceNumber(); 210 mPendingEvents.put(seq, event); 211 if (event instanceof KeyEvent) { 212 KeyEvent keyEvent = (KeyEvent)event; 213 mInputMethodSession.dispatchKeyEvent(seq, keyEvent, this); 214 } else { 215 MotionEvent motionEvent = (MotionEvent)event; 216 if (motionEvent.isFromSource(InputDevice.SOURCE_CLASS_TRACKBALL)) { 217 mInputMethodSession.dispatchTrackballEvent(seq, motionEvent, this); 218 } else { 219 mInputMethodSession.dispatchGenericMotionEvent(seq, motionEvent, this); 220 } 221 } 222 } 223 224 @Override 225 public void finishedEvent(int seq, boolean handled) { 226 int index = mPendingEvents.indexOfKey(seq); 227 if (index >= 0) { 228 InputEvent event = mPendingEvents.valueAt(index); 229 mPendingEvents.removeAt(index); 230 finishInputEvent(event, handled); 231 } 232 } 233 } 234 } 235
