/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.wm;
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import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_ATM;
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import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_WITH_CLASS_NAME;
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import android.app.IAssistDataReceiver;
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import android.graphics.Bitmap;
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import android.os.Binder;
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import android.os.Bundle;
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import android.os.RemoteException;
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import android.util.Log;
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import com.android.server.am.AssistDataRequester.AssistDataRequesterCallbacks;
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/**
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* Proxies assist data to the given receiver, skipping all callbacks if the receiver dies.
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*/
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class AssistDataReceiverProxy implements AssistDataRequesterCallbacks,
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Binder.DeathRecipient {
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private static final String TAG = TAG_WITH_CLASS_NAME ? "AssistDataReceiverProxy" : TAG_ATM;
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private String mCallerPackage;
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private IAssistDataReceiver mReceiver;
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public AssistDataReceiverProxy(IAssistDataReceiver receiver, String callerPackage) {
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mReceiver = receiver;
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mCallerPackage = callerPackage;
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linkToDeath();
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}
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@Override
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public boolean canHandleReceivedAssistDataLocked() {
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// We are forwarding, so we can always receive this data
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return true;
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}
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@Override
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public void onAssistDataReceivedLocked(Bundle data, int activityIndex, int activityCount) {
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if (mReceiver != null) {
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try {
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mReceiver.onHandleAssistData(data);
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} catch (RemoteException e) {
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Log.w(TAG, "Failed to proxy assist data to receiver in package="
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+ mCallerPackage, e);
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}
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}
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}
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@Override
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public void onAssistScreenshotReceivedLocked(Bitmap screenshot) {
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if (mReceiver != null) {
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try {
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mReceiver.onHandleAssistScreenshot(screenshot);
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} catch (RemoteException e) {
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Log.w(TAG, "Failed to proxy assist screenshot to receiver in package="
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+ mCallerPackage, e);
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}
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}
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}
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@Override
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public void onAssistRequestCompleted() {
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unlinkToDeath();
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}
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@Override
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public void binderDied() {
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unlinkToDeath();
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}
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private void linkToDeath() {
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try {
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mReceiver.asBinder().linkToDeath(this, 0);
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} catch (RemoteException e) {
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Log.w(TAG, "Could not link to client death", e);
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}
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}
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private void unlinkToDeath() {
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if (mReceiver != null) {
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mReceiver.asBinder().unlinkToDeath(this, 0);
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}
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mReceiver = null;
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}
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}
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