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