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/*
* Copyright (C) 2015 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 org.chromium.latency.walt;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
/**
* A very simple logger that keeps its data in a StringBuilder. We need on screen log because the
* USB port is often taken and we don't have easy access to adb log.
*/
public class SimpleLogger {
private static final String LOG_INTENT = "log-message";
public static final String TAG = "WaltLogger";
private static final Object LOCK = new Object();
private static SimpleLogger instance;
private StringBuilder sb = new StringBuilder();
private LocalBroadcastManager broadcastManager;
public static SimpleLogger getInstance(Context context) {
synchronized (LOCK) {
if (instance == null) {
instance = new SimpleLogger(context.getApplicationContext());
}
return instance;
}
}
private SimpleLogger(Context context) {
broadcastManager = LocalBroadcastManager.getInstance(context);
}
public synchronized void log(String msg) {
Log.i(TAG, msg);
sb.append(msg);
sb.append('\n');
if (broadcastManager != null) {
Intent intent = new Intent(LOG_INTENT);
intent.putExtra("message", msg);
broadcastManager.sendBroadcast(intent);
}
}
public void registerReceiver(BroadcastReceiver broadcastReceiver) {
broadcastManager.registerReceiver(broadcastReceiver, new IntentFilter(LOG_INTENT));
}
public void unregisterReceiver(BroadcastReceiver broadcastReceiver) {
broadcastManager.unregisterReceiver(broadcastReceiver);
}
public String getLogText() {
return sb.toString();
}
public void clear() {
sb = new StringBuilder();
}
}
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