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 android.annotation.UnsupportedAppUsage; 20 import android.content.Context; 21 import android.graphics.Rect; 22 import android.os.Bundle; 23 import android.os.Looper; 24 import android.os.Message; 25 import android.util.Log; 26 import android.util.SparseArray; 27 import android.view.InputChannel; 28 import android.view.InputDevice; 29 import android.view.InputEvent; 30 import android.view.InputEventReceiver; 31 import android.view.KeyEvent; 32 import android.view.MotionEvent; 33 import android.view.inputmethod.CompletionInfo; 34 import android.view.inputmethod.CursorAnchorInfo; 35 import android.view.inputmethod.ExtractedText; 36 import android.view.inputmethod.InputMethodSession; 37 38 import com.android.internal.os.HandlerCaller; 39 import com.android.internal.os.SomeArgs; 40 import com.android.internal.view.IInputMethodSession; 41 42 class IInputMethodSessionWrapper extends IInputMethodSession.Stub 43 implements HandlerCaller.Callback { 44 private static final String TAG = "InputMethodWrapper"; 45 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_UPDATE_CURSOR_ANCHOR_INFO = 99; 51 private static final int DO_APP_PRIVATE_COMMAND = 100; 52 private static final int DO_TOGGLE_SOFT_INPUT = 105; 53 private static final int DO_FINISH_SESSION = 110; 54 private static final int DO_VIEW_CLICKED = 115; 55 private static final int DO_NOTIFY_IME_HIDDEN = 120; 56 57 @UnsupportedAppUsage 58 HandlerCaller mCaller; 59 InputMethodSession mInputMethodSession; 60 InputChannel mChannel; 61 ImeInputEventReceiver mReceiver; 62 63 public IInputMethodSessionWrapper(Context context, 64 InputMethodSession inputMethodSession, InputChannel channel) { 65 mCaller = new HandlerCaller(context, null, 66 this, true /*asyncHandler*/); 67 mInputMethodSession = inputMethodSession; 68 mChannel = channel; 69 if (channel != null) { 70 mReceiver = new ImeInputEventReceiver(channel, context.getMainLooper()); 71 } 72 } 73 74 public InputMethodSession getInternalInputMethodSession() { 75 return mInputMethodSession; 76 } 77 78 @Override 79 public void executeMessage(Message msg) { 80 if (mInputMethodSession == null) { 81 // The session has been finished. Args needs to be recycled 82 // for cases below. 83 switch (msg.what) { 84 case DO_UPDATE_SELECTION: 85 case DO_APP_PRIVATE_COMMAND: { 86 SomeArgs args = (SomeArgs)msg.obj; 87 args.recycle(); 88 } 89 } 90 return; 91 } 92 93 switch (msg.what) { 94 case DO_DISPLAY_COMPLETIONS: 95 mInputMethodSession.displayCompletions((CompletionInfo[])msg.obj); 96 return; 97 case DO_UPDATE_EXTRACTED_TEXT: 98 mInputMethodSession.updateExtractedText(msg.arg1, 99 (ExtractedText)msg.obj); 100 return; 101 case DO_UPDATE_SELECTION: { 102 SomeArgs args = (SomeArgs)msg.obj; 103 mInputMethodSession.updateSelection(args.argi1, args.argi2, 104 args.argi3, args.argi4, args.argi5, args.argi6); 105 args.recycle(); 106 return; 107 } 108 case DO_UPDATE_CURSOR: { 109 mInputMethodSession.updateCursor((Rect)msg.obj); 110 return; 111 } 112 case DO_UPDATE_CURSOR_ANCHOR_INFO: { 113 mInputMethodSession.updateCursorAnchorInfo((CursorAnchorInfo)msg.obj); 114 return; 115 } 116 case DO_APP_PRIVATE_COMMAND: { 117 SomeArgs args = (SomeArgs)msg.obj; 118 mInputMethodSession.appPrivateCommand((String)args.arg1, 119 (Bundle)args.arg2); 120 args.recycle(); 121 return; 122 } 123 case DO_TOGGLE_SOFT_INPUT: { 124 mInputMethodSession.toggleSoftInput(msg.arg1, msg.arg2); 125 return; 126 } 127 case DO_FINISH_SESSION: { 128 doFinishSession(); 129 return; 130 } 131 case DO_VIEW_CLICKED: { 132 mInputMethodSession.viewClicked(msg.arg1 == 1); 133 return; 134 } 135 case DO_NOTIFY_IME_HIDDEN: { 136 mInputMethodSession.notifyImeHidden(); 137 return; 138 } 139 } 140 Log.w(TAG, "Unhandled message code: " + msg.what); 141 } 142 143 private void doFinishSession() { 144 mInputMethodSession = null; 145 if (mReceiver != null) { 146 mReceiver.dispose(); 147 mReceiver = null; 148 } 149 if (mChannel != null) { 150 mChannel.dispose(); 151 mChannel = null; 152 } 153 } 154 155 @Override 156 public void displayCompletions(CompletionInfo[] completions) { 157 mCaller.executeOrSendMessage(mCaller.obtainMessageO( 158 DO_DISPLAY_COMPLETIONS, completions)); 159 } 160 161 @Override 162 public void updateExtractedText(int token, ExtractedText text) { 163 mCaller.executeOrSendMessage(mCaller.obtainMessageIO( 164 DO_UPDATE_EXTRACTED_TEXT, token, text)); 165 } 166 167 @Override 168 public void updateSelection(int oldSelStart, int oldSelEnd, 169 int newSelStart, int newSelEnd, int candidatesStart, int candidatesEnd) { 170 mCaller.executeOrSendMessage(mCaller.obtainMessageIIIIII(DO_UPDATE_SELECTION, 171 oldSelStart, oldSelEnd, newSelStart, newSelEnd, 172 candidatesStart, candidatesEnd)); 173 } 174 175 @Override 176 public void viewClicked(boolean focusChanged) { 177 mCaller.executeOrSendMessage( 178 mCaller.obtainMessageI(DO_VIEW_CLICKED, focusChanged ? 1 : 0)); 179 } 180 181 @Override 182 public void notifyImeHidden() { 183 mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_NOTIFY_IME_HIDDEN)); 184 } 185 186 @Override 187 public void updateCursor(Rect newCursor) { 188 mCaller.executeOrSendMessage( 189 mCaller.obtainMessageO(DO_UPDATE_CURSOR, newCursor)); 190 } 191 192 @Override 193 public void updateCursorAnchorInfo(CursorAnchorInfo cursorAnchorInfo) { 194 mCaller.executeOrSendMessage( 195 mCaller.obtainMessageO(DO_UPDATE_CURSOR_ANCHOR_INFO, cursorAnchorInfo)); 196 } 197 198 @Override 199 public void appPrivateCommand(String action, Bundle data) { 200 mCaller.executeOrSendMessage( 201 mCaller.obtainMessageOO(DO_APP_PRIVATE_COMMAND, action, data)); 202 } 203 204 @Override 205 public void toggleSoftInput(int showFlags, int hideFlags) { 206 mCaller.executeOrSendMessage( 207 mCaller.obtainMessageII(DO_TOGGLE_SOFT_INPUT, showFlags, hideFlags)); 208 } 209 210 @Override 211 public void finishSession() { 212 mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_FINISH_SESSION)); 213 } 214 215 private final class ImeInputEventReceiver extends InputEventReceiver 216 implements InputMethodSession.EventCallback { 217 private final SparseArray<InputEvent> mPendingEvents = new SparseArray<InputEvent>(); 218 219 public ImeInputEventReceiver(InputChannel inputChannel, Looper looper) { 220 super(inputChannel, looper); 221 } 222 223 @Override 224 public void onInputEvent(InputEvent event) { 225 if (mInputMethodSession == null) { 226 // The session has been finished. 227 finishInputEvent(event, false); 228 return; 229 } 230 231 final int seq = event.getSequenceNumber(); 232 mPendingEvents.put(seq, event); 233 if (event instanceof KeyEvent) { 234 KeyEvent keyEvent = (KeyEvent)event; 235 mInputMethodSession.dispatchKeyEvent(seq, keyEvent, this); 236 } else { 237 MotionEvent motionEvent = (MotionEvent)event; 238 if (motionEvent.isFromSource(InputDevice.SOURCE_CLASS_TRACKBALL)) { 239 mInputMethodSession.dispatchTrackballEvent(seq, motionEvent, this); 240 } else { 241 mInputMethodSession.dispatchGenericMotionEvent(seq, motionEvent, this); 242 } 243 } 244 } 245 246 @Override 247 public void finishedEvent(int seq, boolean handled) { 248 int index = mPendingEvents.indexOfKey(seq); 249 if (index >= 0) { 250 InputEvent event = mPendingEvents.valueAt(index); 251 mPendingEvents.removeAt(index); 252 finishInputEvent(event, handled); 253 } 254 } 255 } 256 } 257
