| /* |
| * Copyright (C) 2018 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 android.inputmethodservice; |
| |
| import static java.lang.annotation.RetentionPolicy.SOURCE; |
| |
| import android.annotation.IntDef; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.util.Log; |
| import android.view.InputChannel; |
| import android.view.KeyEvent; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.inputmethod.IMultiClientInputMethod; |
| import com.android.internal.inputmethod.IMultiClientInputMethodPrivilegedOperations; |
| import com.android.internal.inputmethod.MultiClientInputMethodPrivilegedOperations; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.ref.WeakReference; |
| |
| final class MultiClientInputMethodServiceDelegateImpl { |
| private static final String TAG = "MultiClientInputMethodServiceDelegateImpl"; |
| |
| private final Object mLock = new Object(); |
| |
| @Retention(SOURCE) |
| @IntDef({InitializationPhase.INSTANTIATED, |
| InitializationPhase.ON_BIND_CALLED, |
| InitializationPhase.INITIALIZE_CALLED, |
| InitializationPhase.ON_UNBIND_CALLED, |
| InitializationPhase.ON_DESTROY_CALLED}) |
| private @interface InitializationPhase { |
| int INSTANTIATED = 1; |
| int ON_BIND_CALLED = 2; |
| int INITIALIZE_CALLED = 3; |
| int ON_UNBIND_CALLED = 4; |
| int ON_DESTROY_CALLED = 5; |
| } |
| |
| @GuardedBy("mLock") |
| @InitializationPhase |
| private int mInitializationPhase; |
| |
| private final MultiClientInputMethodPrivilegedOperations mPrivOps = |
| new MultiClientInputMethodPrivilegedOperations(); |
| |
| private final MultiClientInputMethodServiceDelegate.ServiceCallback mServiceCallback; |
| |
| private final Context mContext; |
| |
| MultiClientInputMethodServiceDelegateImpl(Context context, |
| MultiClientInputMethodServiceDelegate.ServiceCallback serviceCallback) { |
| mInitializationPhase = InitializationPhase.INSTANTIATED; |
| mContext = context; |
| mServiceCallback = serviceCallback; |
| } |
| |
| void onDestroy() { |
| synchronized (mLock) { |
| switch (mInitializationPhase) { |
| case InitializationPhase.INSTANTIATED: |
| case InitializationPhase.ON_UNBIND_CALLED: |
| mInitializationPhase = InitializationPhase.ON_DESTROY_CALLED; |
| break; |
| default: |
| Log.e(TAG, "unexpected state=" + mInitializationPhase); |
| break; |
| } |
| } |
| } |
| |
| private static final class ServiceImpl extends IMultiClientInputMethod.Stub { |
| private final WeakReference<MultiClientInputMethodServiceDelegateImpl> mImpl; |
| |
| ServiceImpl(MultiClientInputMethodServiceDelegateImpl service) { |
| mImpl = new WeakReference<>(service); |
| } |
| |
| @Override |
| public void initialize(IMultiClientInputMethodPrivilegedOperations privOps) { |
| final MultiClientInputMethodServiceDelegateImpl service = mImpl.get(); |
| if (service == null) { |
| return; |
| } |
| synchronized (service.mLock) { |
| switch (service.mInitializationPhase) { |
| case InitializationPhase.ON_BIND_CALLED: |
| service.mPrivOps.set(privOps); |
| service.mInitializationPhase = InitializationPhase.INITIALIZE_CALLED; |
| service.mServiceCallback.initialized(); |
| break; |
| default: |
| Log.e(TAG, "unexpected state=" + service.mInitializationPhase); |
| break; |
| } |
| } |
| } |
| |
| @Override |
| public void addClient(int clientId, int uid, int pid, int selfReportedDisplayId) { |
| final MultiClientInputMethodServiceDelegateImpl service = mImpl.get(); |
| if (service == null) { |
| return; |
| } |
| service.mServiceCallback.addClient(clientId, uid, pid, selfReportedDisplayId); |
| } |
| |
| @Override |
| public void removeClient(int clientId) { |
| final MultiClientInputMethodServiceDelegateImpl service = mImpl.get(); |
| if (service == null) { |
| return; |
| } |
| service.mServiceCallback.removeClient(clientId); |
| } |
| } |
| |
| IBinder onBind(Intent intent) { |
| synchronized (mLock) { |
| switch (mInitializationPhase) { |
| case InitializationPhase.INSTANTIATED: |
| mInitializationPhase = InitializationPhase.ON_BIND_CALLED; |
| return new ServiceImpl(this); |
| default: |
| Log.e(TAG, "unexpected state=" + mInitializationPhase); |
| break; |
| } |
| } |
| return null; |
| } |
| |
| boolean onUnbind(Intent intent) { |
| synchronized (mLock) { |
| switch (mInitializationPhase) { |
| case InitializationPhase.ON_BIND_CALLED: |
| case InitializationPhase.INITIALIZE_CALLED: |
| mInitializationPhase = InitializationPhase.ON_UNBIND_CALLED; |
| mPrivOps.dispose(); |
| break; |
| default: |
| Log.e(TAG, "unexpected state=" + mInitializationPhase); |
| break; |
| } |
| } |
| return false; |
| } |
| |
| IBinder createInputMethodWindowToken(int displayId) { |
| return mPrivOps.createInputMethodWindowToken(displayId); |
| } |
| |
| void acceptClient(int clientId, |
| MultiClientInputMethodServiceDelegate.ClientCallback clientCallback, |
| KeyEvent.DispatcherState dispatcherState, Looper looper) { |
| final InputChannel[] channels = InputChannel.openInputChannelPair("MSIMS-session"); |
| final InputChannel writeChannel = channels[0]; |
| final InputChannel readChannel = channels[1]; |
| try { |
| final MultiClientInputMethodClientCallbackAdaptor callbackAdaptor = |
| new MultiClientInputMethodClientCallbackAdaptor(clientCallback, looper, |
| dispatcherState, readChannel); |
| mPrivOps.acceptClient(clientId, callbackAdaptor.createIInputMethodSession(), |
| callbackAdaptor.createIMultiClientInputMethodSession(), writeChannel); |
| } finally { |
| writeChannel.dispose(); |
| } |
| } |
| |
| void reportImeWindowTarget(int clientId, int targetWindowHandle, IBinder imeWindowToken) { |
| mPrivOps.reportImeWindowTarget(clientId, targetWindowHandle, imeWindowToken); |
| } |
| |
| boolean isUidAllowedOnDisplay(int displayId, int uid) { |
| return mPrivOps.isUidAllowedOnDisplay(displayId, uid); |
| } |
| |
| void setActive(int clientId, boolean active) { |
| mPrivOps.setActive(clientId, active); |
| } |
| } |