content: /*
   * Copyright (C) 2016 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.multiwindowplayground.activities;
  
  import com.android.multiwindowplayground.R;
  import com.example.android.common.logger.Log;
  import com.example.android.common.logger.LogFragment;
  import com.example.android.common.logger.LogWrapper;
  import com.example.android.common.logger.MessageOnlyLogFilter;
  
  import android.content.res.Configuration;
  import android.os.Bundle;
  import android.os.PersistableBundle;
  import android.support.annotation.ColorRes;
  import android.support.annotation.StringRes;
  import android.support.v7.app.AppCompatActivity;
  import android.view.View;
  import android.widget.TextView;
  
  /**
   * Activity that logs all key lifecycle callbacks to {@link Log}.
   * Output is also logged to the UI into a {@link LogFragment} through {@link #initializeLogging()}
   * and {@link #stopLogging()}.
   */
  public abstract class LoggingActivity extends AppCompatActivity {
  
      protected String mLogTag = getClass().getSimpleName();
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          Log.d(mLogTag, "onCreate");
  
  
      }
  
      @Override
      public void onPostCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
          super.onPostCreate(savedInstanceState, persistentState);
          Log.d(mLogTag, "onPostCreate");
      }
  
      @Override
      protected void onPause() {
          super.onPause();
          Log.d(mLogTag, "onPause");
      }
  
      @Override
      protected void onDestroy() {
          super.onDestroy();
          Log.d(mLogTag, "onDestroy");
      }
  
      @Override
      protected void onResume() {
          super.onResume();
          Log.d(mLogTag, "onResume");
      }
  
      @Override
      public void onConfigurationChanged(Configuration newConfig) {
          super.onConfigurationChanged(newConfig);
          Log.d(mLogTag, "onConfigurationChanged: " + newConfig.toString());
      }
  
      @Override
      protected void onPostCreate(Bundle savedInstanceState) {
          super.onPostCreate(savedInstanceState);
          Log.d(mLogTag, "onPostCreate");
      }
  
      @Override
      protected void onStart() {
          super.onStart();
          // Start logging to UI.
          initializeLogging();
  
          Log.d(mLogTag, "onStart");
      }
  
      @Override
      protected void onStop() {
          super.onStop();
          // Stop logging to UI when this activity is stopped.
          stopLogging();
  
          Log.d(mLogTag, "onStop");
      }
  
      @Override
      public void onMultiWindowModeChanged(boolean isInMultiWindowMode) {
          super.onMultiWindowModeChanged(isInMultiWindowMode);
  
          Log.d(mLogTag, "onMultiWindowModeChanged: " + isInMultiWindowMode);
      }
  
      // Logging and UI methods below.
  
      /** Set up targets to receive log data */
      public void initializeLogging() {
          // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
          // Wraps Android's native log framework
          LogWrapper logWrapper = new LogWrapper();
          Log.setLogNode(logWrapper);
  
          // Filter strips out everything except the message text.
          MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
          logWrapper.setNext(msgFilter);
  
          // On screen logging via a fragment with a TextView.
          LogFragment logFragment = (LogFragment) getSupportFragmentManager()
                  .findFragmentById(R.id.log_fragment);
          msgFilter.setNext(logFragment.getLogView());
      }
  
      public void stopLogging() {
          Log.setLogNode(null);
      }
  
      /**
       * Set the description text if a TextView with the id <code>description</code> is available.
       */
      protected void setDescription(@StringRes int textId) {
          // Set the text and background color
          TextView description = (TextView) findViewById(R.id.description);
          if (description != null) {
              description.setText(textId);
          }
      }
  
      /**
       * Set the background color for the description text.
       */
      protected void setBackgroundColor(@ColorRes int colorId) {
          View scrollView = findViewById(R.id.scrollview);
          if (scrollView != null) {
              scrollView.setBackgroundResource(colorId);
          }
      }
  
  }
  