/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.internal.view;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.RemoteException;
import android.util.Log;
import android.view.KeyEvent;
import android.view.inputmethod.CompletionInfo;
import android.view.inputmethod.CorrectionInfo;
import android.view.inputmethod.ExtractedTextRequest;
import android.view.inputmethod.InputConnection;
import java.lang.ref.WeakReference;
public class IInputConnectionWrapper extends IInputContext.Stub {
static final String TAG = "IInputConnectionWrapper";
private static final int DO_GET_TEXT_AFTER_CURSOR = 10;
private static final int DO_GET_TEXT_BEFORE_CURSOR = 20;
private static final int DO_GET_SELECTED_TEXT = 25;
private static final int DO_GET_CURSOR_CAPS_MODE = 30;
private static final int DO_GET_EXTRACTED_TEXT = 40;
private static final int DO_COMMIT_TEXT = 50;
private static final int DO_COMMIT_COMPLETION = 55;
private static final int DO_COMMIT_CORRECTION = 56;
private static final int DO_SET_SELECTION = 57;
private static final int DO_PERFORM_EDITOR_ACTION = 58;
private static final int DO_PERFORM_CONTEXT_MENU_ACTION = 59;
private static final int DO_SET_COMPOSING_TEXT = 60;
private static final int DO_SET_COMPOSING_REGION = 63;
private static final int DO_FINISH_COMPOSING_TEXT = 65;
private static final int DO_SEND_KEY_EVENT = 70;
private static final int DO_DELETE_SURROUNDING_TEXT = 80;
private static final int DO_BEGIN_BATCH_EDIT = 90;
private static final int DO_END_BATCH_EDIT = 95;
private static final int DO_REPORT_FULLSCREEN_MODE = 100;
private static final int DO_PERFORM_PRIVATE_COMMAND = 120;
private static final int DO_CLEAR_META_KEY_STATES = 130;
private static final int DO_REQUEST_UPDATE_CURSOR_ANCHOR_INFO = 140;
private WeakReference<InputConnection> mInputConnection;
private Looper mMainLooper;
private Handler mH;
static class SomeArgs {
Object arg1;
Object arg2;
IInputContextCallback callback;
int seq;
}
class MyHandler extends Handler {
MyHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
executeMessage(msg);
}
}
public IInputConnectionWrapper(Looper mainLooper, InputConnection conn) {
mInputConnection = new WeakReference<InputConnection>(conn);
mMainLooper = mainLooper;
mH = new MyHandler(mMainLooper);
}
public boolean isActive() {
return true;
}
public void getTextAfterCursor(int length, int flags, int seq, IInputContextCallback callback) {
dispatchMessage(obtainMessageIISC(DO_GET_TEXT_AFTER_CURSOR, length, flags, seq, callback));
}
public void getTextBeforeCursor(int length, int flags, int seq, IInputContextCallback callback) {
dispatchMessage(obtainMessageIISC(DO_GET_TEXT_BEFORE_CURSOR, length, flags, seq, callback));
}
public void getSelectedText(int flags, int seq, IInputContextCallback callback) {
dispatchMessage(obtainMessageISC(DO_GET_SELECTED_TEXT, flags, seq, callback));
}
public void getCursorCapsMode(int reqModes, int seq, IInputContextCallback callback) {
dispatchMessage(obtainMessageISC(DO_GET_CURSOR_CAPS_MODE, reqModes, seq, callback));
}
public void getExtractedText(ExtractedTextRequest request,
int flags, int seq, IInputContextCallback callback) {
dispatchMessage(obtainMessageIOSC(DO_GET_EXTRACTED_TEXT, flags,
request, seq, callback));
}
public void commitText(CharSequence text, int newCursorPosition) {
dispatchMessage(obtainMessageIO(DO_COMMIT_TEXT, newCursorPosition, text));
}
public void commitCompletion(CompletionInfo text) {
dispatchMessage(obtainMessageO(DO_COMMIT_COMPLETION, text));
}
public void commitCorrection(CorrectionInfo info) {
dispatchMessage(obtainMessageO(DO_COMMIT_CORRECTION, info));
}
public void setSelection(int start, int end) {
dispatchMessage(obtainMessageII(DO_SET_SELECTION, start, end));
}
public void performEditorAction(int id) {
dispatchMessage(obtainMessageII(DO_PERFORM_EDITOR_ACTION, id, 0));
}
public void performContextMenuAction(int id) {
dispatchMessage(obtainMessageII(DO_PERFORM_CONTEXT_MENU_ACTION, id, 0));
}
public void setComposingRegion(int start, int end) {
dispatchMessage(obtainMessageII(DO_SET_COMPOSING_REGION, start, end));
}
public void setComposingText(CharSequence text, int newCursorPosition) {
dispatchMessage(obtainMessageIO(DO_SET_COMPOSING_TEXT, newCursorPosition, text));
}
public void finishComposingText() {
dispatchMessage(obtainMessage(DO_FINISH_COMPOSING_TEXT));
}
public void sendKeyEvent(KeyEvent event) {
dispatchMessage(obtainMessageO(DO_SEND_KEY_EVENT, event));
}
public void clearMetaKeyStates(int states) {
dispatchMessage(obtainMessageII(DO_CLEAR_META_KEY_STATES, states, 0));
}
public void deleteSurroundingText(int leftLength, int rightLength) {
dispatchMessage(obtainMessageII(DO_DELETE_SURROUNDING_TEXT,
leftLength, rightLength));
}
public void beginBatchEdit() {
dispatchMessage(obtainMessage(DO_BEGIN_BATCH_EDIT));
}
public void endBatchEdit() {
dispatchMessage(obtainMessage(DO_END_BATCH_EDIT));
}
public void reportFullscreenMode(boolean enabled) {
dispatchMessage(obtainMessageII(DO_REPORT_FULLSCREEN_MODE, enabled ? 1 : 0, 0));
}
public void performPrivateCommand(String action, Bundle data) {
dispatchMessage(obtainMessageOO(DO_PERFORM_PRIVATE_COMMAND, action, data));
}
public void requestUpdateCursorAnchorInfo(int cursorUpdateMode, int seq,
IInputContextCallback callback) {
dispatchMessage(obtainMessageISC(DO_REQUEST_UPDATE_CURSOR_ANCHOR_INFO, cursorUpdateMode,
seq, callback));
}
void dispatchMessage(Message msg) {
// If we are calling this from the main thread, then we can call
// right through. Otherwise, we need to send the message to the
// main thread.
if (Looper.myLooper() == mMainLooper) {
executeMessage(msg);
msg.recycle();
return;
}
mH.sendMessage(msg);
}
void executeMessage(Message msg) {
switch (msg.what) {
case DO_GET_TEXT_AFTER_CURSOR: {
SomeArgs args = (SomeArgs)msg.obj;
try {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "getTextAfterCursor on inactive InputConnection");
args.callback.setTextAfterCursor(null, args.seq);
return;
}
args.callback.setTextAfterCursor(ic.getTextAfterCursor(
msg.arg1, msg.arg2), args.seq);
} catch (RemoteException e) {
Log.w(TAG, "Got RemoteException calling setTextAfterCursor", e);
}
return;
}
case DO_GET_TEXT_BEFORE_CURSOR: {
SomeArgs args = (SomeArgs)msg.obj;
try {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "getTextBeforeCursor on inactive InputConnection");
args.callback.setTextBeforeCursor(null, args.seq);
return;
}
args.callback.setTextBeforeCursor(ic.getTextBeforeCursor(
msg.arg1, msg.arg2), args.seq);
} catch (RemoteException e) {
Log.w(TAG, "Got RemoteException calling setTextBeforeCursor", e);
}
return;
}
case DO_GET_SELECTED_TEXT: {
SomeArgs args = (SomeArgs)msg.obj;
try {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "getSelectedText on inactive InputConnection");
args.callback.setSelectedText(null, args.seq);
return;
}
args.callback.setSelectedText(ic.getSelectedText(
msg.arg1), args.seq);
} catch (RemoteException e) {
Log.w(TAG, "Got RemoteException calling setSelectedText", e);
}
return;
}
case DO_GET_CURSOR_CAPS_MODE: {
SomeArgs args = (SomeArgs)msg.obj;
try {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "getCursorCapsMode on inactive InputConnection");
args.callback.setCursorCapsMode(0, args.seq);
return;
}
args.callback.setCursorCapsMode(ic.getCursorCapsMode(msg.arg1),
args.seq);
} catch (RemoteException e) {
Log.w(TAG, "Got RemoteException calling setCursorCapsMode", e);
}
return;
}
case DO_GET_EXTRACTED_TEXT: {
SomeArgs args = (SomeArgs)msg.obj;
try {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "getExtractedText on inactive InputConnection");
args.callback.setExtractedText(null, args.seq);
return;
}
args.callback.setExtractedText(ic.getExtractedText(
(ExtractedTextRequest)args.arg1, msg.arg1), args.seq);
} catch (RemoteException e) {
Log.w(TAG, "Got RemoteException calling setExtractedText", e);
}
return;
}
case DO_COMMIT_TEXT: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "commitText on inactive InputConnection");
return;
}
ic.commitText((CharSequence)msg.obj, msg.arg1);
return;
}
case DO_SET_SELECTION: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "setSelection on inactive InputConnection");
return;
}
ic.setSelection(msg.arg1, msg.arg2);
return;
}
case DO_PERFORM_EDITOR_ACTION: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "performEditorAction on inactive InputConnection");
return;
}
ic.performEditorAction(msg.arg1);
return;
}
case DO_PERFORM_CONTEXT_MENU_ACTION: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "performContextMenuAction on inactive InputConnection");
return;
}
ic.performContextMenuAction(msg.arg1);
return;
}
case DO_COMMIT_COMPLETION: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "commitCompletion on inactive InputConnection");
return;
}
ic.commitCompletion((CompletionInfo)msg.obj);
return;
}
case DO_COMMIT_CORRECTION: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "commitCorrection on inactive InputConnection");
return;
}
ic.commitCorrection((CorrectionInfo)msg.obj);
return;
}
case DO_SET_COMPOSING_TEXT: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "setComposingText on inactive InputConnection");
return;
}
ic.setComposingText((CharSequence)msg.obj, msg.arg1);
return;
}
case DO_SET_COMPOSING_REGION: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "setComposingRegion on inactive InputConnection");
return;
}
ic.setComposingRegion(msg.arg1, msg.arg2);
return;
}
case DO_FINISH_COMPOSING_TEXT: {
InputConnection ic = mInputConnection.get();
// Note we do NOT check isActive() here, because this is safe
// for an IME to call at any time, and we need to allow it
// through to clean up our state after the IME has switched to
// another client.
if (ic == null) {
Log.w(TAG, "finishComposingText on inactive InputConnection");
return;
}
ic.finishComposingText();
return;
}
case DO_SEND_KEY_EVENT: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "sendKeyEvent on inactive InputConnection");
return;
}
ic.sendKeyEvent((KeyEvent)msg.obj);
return;
}
case DO_CLEAR_META_KEY_STATES: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "clearMetaKeyStates on inactive InputConnection");
return;
}
ic.clearMetaKeyStates(msg.arg1);
return;
}
case DO_DELETE_SURROUNDING_TEXT: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "deleteSurroundingText on inactive InputConnection");
return;
}
ic.deleteSurroundingText(msg.arg1, msg.arg2);
return;
}
case DO_BEGIN_BATCH_EDIT: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "beginBatchEdit on inactive InputConnection");
return;
}
ic.beginBatchEdit();
return;
}
case DO_END_BATCH_EDIT: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "endBatchEdit on inactive InputConnection");
return;
}
ic.endBatchEdit();
return;
}
case DO_REPORT_FULLSCREEN_MODE: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "showStatusIcon on inactive InputConnection");
return;
}
ic.reportFullscreenMode(msg.arg1 == 1);
return;
}
case DO_PERFORM_PRIVATE_COMMAND: {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "performPrivateCommand on inactive InputConnection");
return;
}
SomeArgs args = (SomeArgs)msg.obj;
ic.performPrivateCommand((String)args.arg1,
(Bundle)args.arg2);
return;
}
case DO_REQUEST_UPDATE_CURSOR_ANCHOR_INFO: {
SomeArgs args = (SomeArgs)msg.obj;
try {
InputConnection ic = mInputConnection.get();
if (ic == null || !isActive()) {
Log.w(TAG, "requestCursorAnchorInfo on inactive InputConnection");
args.callback.setRequestUpdateCursorAnchorInfoResult(false, args.seq);
return;
}
args.callback.setRequestUpdateCursorAnchorInfoResult(
ic.requestCursorUpdates(msg.arg1), args.seq);
} catch (RemoteException e) {
Log.w(TAG, "Got RemoteException calling requestCursorAnchorInfo", e);
}
return;
}
}
Log.w(TAG, "Unhandled message code: " + msg.what);
}
Message obtainMessage(int what) {
return mH.obtainMessage(what);
}
Message obtainMessageII(int what, int arg1, int arg2) {
return mH.obtainMessage(what, arg1, arg2);
}
Message obtainMessageO(int what, Object arg1) {
return mH.obtainMessage(what, 0, 0, arg1);
}
Message obtainMessageISC(int what, int arg1, int seq, IInputContextCallback callback) {
SomeArgs args = new SomeArgs();
args.callback = callback;
args.seq = seq;
return mH.obtainMessage(what, arg1, 0, args);
}
Message obtainMessageIISC(int what, int arg1, int arg2, int seq, IInputContextCallback callback) {
SomeArgs args = new SomeArgs();
args.callback = callback;
args.seq = seq;
return mH.obtainMessage(what, arg1, arg2, args);
}
Message obtainMessageOSC(int what, Object arg1, int seq, IInputContextCallback callback) {
SomeArgs args = new SomeArgs();
args.arg1 = arg1;
args.callback = callback;
args.seq = seq;
return mH.obtainMessage(what, 0, 0, args);
}
Message obtainMessageIOSC(int what, int arg1, Object arg2, int seq,
IInputContextCallback callback) {
SomeArgs args = new SomeArgs();
args.arg1 = arg2;
args.callback = callback;
args.seq = seq;
return mH.obtainMessage(what, arg1, 0, args);
}
Message obtainMessageIO(int what, int arg1, Object arg2) {
return mH.obtainMessage(what, arg1, 0, arg2);
}
Message obtainMessageOO(int what, Object arg1, Object arg2) {
SomeArgs args = new SomeArgs();
args.arg1 = arg1;
args.arg2 = arg2;
return mH.obtainMessage(what, 0, 0, args);
}
}
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