diff options
Diffstat (limited to 'android/WALT/app/src/main/java/org/chromium/latency/walt/SimpleLogger.java')
-rw-r--r-- | android/WALT/app/src/main/java/org/chromium/latency/walt/SimpleLogger.java | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/android/WALT/app/src/main/java/org/chromium/latency/walt/SimpleLogger.java b/android/WALT/app/src/main/java/org/chromium/latency/walt/SimpleLogger.java new file mode 100644 index 0000000..6059e0f --- /dev/null +++ b/android/WALT/app/src/main/java/org/chromium/latency/walt/SimpleLogger.java @@ -0,0 +1,80 @@ +/* + * 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(); + } + +} |