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/*
* 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 com.android.systemui;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentProvider;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.UserHandle;
import android.util.ArrayMap;
import android.util.ArraySet;
import android.util.Log;
import com.android.internal.annotations.VisibleForTesting;
import com.android.settingslib.SliceBroadcastRelay;
import com.android.systemui.broadcast.BroadcastDispatcher;
import com.android.systemui.dagger.SysUISingleton;
import javax.inject.Inject;
/**
* Allows settings to register certain broadcasts to launch the settings app for pinned slices.
* @see SliceBroadcastRelay
*/
@SysUISingleton
public class SliceBroadcastRelayHandler extends SystemUI {
private static final String TAG = "SliceBroadcastRelay";
private static final boolean DEBUG = false;
private final ArrayMap<Uri, BroadcastRelay> mRelays = new ArrayMap<>();
private final BroadcastDispatcher mBroadcastDispatcher;
@Inject
public SliceBroadcastRelayHandler(Context context, BroadcastDispatcher broadcastDispatcher) {
super(context);
mBroadcastDispatcher = broadcastDispatcher;
}
@Override
public void start() {
if (DEBUG) Log.d(TAG, "Start");
IntentFilter filter = new IntentFilter(SliceBroadcastRelay.ACTION_REGISTER);
filter.addAction(SliceBroadcastRelay.ACTION_UNREGISTER);
mBroadcastDispatcher.registerReceiver(mReceiver, filter);
}
// This does not use BroadcastDispatcher as the filter may have schemas or mime types.
@VisibleForTesting
void handleIntent(Intent intent) {
if (SliceBroadcastRelay.ACTION_REGISTER.equals(intent.getAction())) {
Uri uri = intent.getParcelableExtra(SliceBroadcastRelay.EXTRA_URI);
ComponentName receiverClass =
intent.getParcelableExtra(SliceBroadcastRelay.EXTRA_RECEIVER);
IntentFilter filter = intent.getParcelableExtra(SliceBroadcastRelay.EXTRA_FILTER);
if (DEBUG) Log.d(TAG, "Register " + uri + " " + receiverClass + " " + filter);
getOrCreateRelay(uri).register(mContext, receiverClass, filter);
} else if (SliceBroadcastRelay.ACTION_UNREGISTER.equals(intent.getAction())) {
Uri uri = intent.getParcelableExtra(SliceBroadcastRelay.EXTRA_URI);
if (DEBUG) Log.d(TAG, "Unregister " + uri);
BroadcastRelay relay = getAndRemoveRelay(uri);
if (relay != null) {
relay.unregister(mContext);
}
}
}
private BroadcastRelay getOrCreateRelay(Uri uri) {
BroadcastRelay ret = mRelays.get(uri);
if (ret == null) {
ret = new BroadcastRelay(uri);
mRelays.put(uri, ret);
}
return ret;
}
private BroadcastRelay getAndRemoveRelay(Uri uri) {
return mRelays.remove(uri);
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
handleIntent(intent);
}
};
private static class BroadcastRelay extends BroadcastReceiver {
private final ArraySet<ComponentName> mReceivers = new ArraySet<>();
private final UserHandle mUserId;
private final Uri mUri;
public BroadcastRelay(Uri uri) {
mUserId = new UserHandle(ContentProvider.getUserIdFromUri(uri));
mUri = uri;
}
public void register(Context context, ComponentName receiver, IntentFilter filter) {
mReceivers.add(receiver);
context.registerReceiver(this, filter);
}
public void unregister(Context context) {
context.unregisterReceiver(this);
}
@Override
public void onReceive(Context context, Intent intent) {
intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
for (ComponentName receiver : mReceivers) {
intent.setComponent(receiver);
intent.putExtra(SliceBroadcastRelay.EXTRA_URI, mUri.toString());
if (DEBUG) Log.d(TAG, "Forwarding " + receiver + " " + intent + " " + mUserId);
context.sendBroadcastAsUser(intent, mUserId);
}
}
}
}
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