Remove multi-client IME

Design doc: go/multi-session-ime-removal

We no longer require this mechanism to support
multi-clients IME, remove it completely.

Bug: 173341412
Test: atest CtsInputMethodTestCases
Change-Id: I0bdc8fe3d32ccabc8ea7996fc689543c3f99331a

1 files changed, 0 insertions, 197 deletions

diff --git a/core/java/android/inputmethodservice/MultiClientInputMethodServiceDelegateImpl.java b/core/java/android/inputmethodservice/MultiClientInputMethodServiceDelegateImpl.java
deleted file mode 100644
index 04db8d625806..000000000000
--- a/core/java/android/inputmethodservice/MultiClientInputMethodServiceDelegateImpl.java
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- * 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);
-    }
-}