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/*
* Copyright (C) 2017 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.dialer.calllog.datasources.systemcalllog;
import android.content.Context;
import android.database.ContentObserver;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.os.Handler;
import android.provider.CallLog;
import android.support.annotation.MainThread;
import android.support.annotation.WorkerThread;
import com.android.dialer.calllog.database.CallLogMutations;
import com.android.dialer.calllog.datasources.CallLogDataSource;
import com.android.dialer.common.Assert;
import com.android.dialer.common.LogUtil;
import com.android.dialer.common.concurrent.ThreadUtil;
import com.android.dialer.util.PermissionsUtil;
import javax.inject.Inject;
/**
* Responsible for defining the rows in the annotated call log and maintaining the columns in it
* which are derived from the system call log.
*/
public class SystemCallLogDataSource implements CallLogDataSource {
@Inject
public SystemCallLogDataSource() {}
@MainThread
@Override
public void registerContentObservers(
Context appContext, ContentObserverCallbacks contentObserverCallbacks) {
Assert.isMainThread();
if (!PermissionsUtil.hasCallLogReadPermissions(appContext)) {
LogUtil.i("SystemCallLogDataSource.registerContentObservers", "no call log permissions");
return;
}
appContext
.getContentResolver()
.registerContentObserver(
CallLog.Calls.CONTENT_URI,
true,
new CallLogObserver(
ThreadUtil.getUiThreadHandler(), appContext, contentObserverCallbacks));
}
@WorkerThread
@Override
public boolean isDirty(Context appContext) {
Assert.isWorkerThread();
/*
* The system call log has a last updated timestamp, but deletes are physical (the "deleted"
* column is unused). This means that we can't detect deletes without scanning the entire table,
* which would be too slow. So, we just rely on content observers to trigger rebuilds when any
* change is made to the system call log.
*/
return false;
}
@WorkerThread
@Override
public void fill(
Context appContext,
SQLiteDatabase readableDatabase,
long lastRebuildTimeMillis,
CallLogMutations mutations) {
Assert.isWorkerThread();
// This data source should always run first so the mutations should always be empty.
Assert.checkState(mutations.isEmpty());
// TODO: Implementation.
}
private static class CallLogObserver extends ContentObserver {
private final Context appContext;
private final ContentObserverCallbacks contentObserverCallbacks;
CallLogObserver(
Handler handler, Context appContext, ContentObserverCallbacks contentObserverCallbacks) {
super(handler);
this.appContext = appContext;
this.contentObserverCallbacks = contentObserverCallbacks;
}
@MainThread
@Override
public void onChange(boolean selfChange, Uri uri) {
Assert.isMainThread();
LogUtil.enterBlock("SystemCallLogDataSource.CallLogObserver.onChange");
super.onChange(selfChange, uri);
/*
* The system call log has a last updated timestamp, but deletes are physical (the "deleted"
* column is unused). This means that we can't detect deletes without scanning the entire
* table, which would be too slow. So, we just rely on content observers to trigger rebuilds
* when any change is made to the system call log.
*/
contentObserverCallbacks.markDirtyAndNotify(appContext);
}
}
}
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