session-android/src/org/thoughtcrime/securesms/BaseActionBarActivity.java

package org.thoughtcrime.securesms;

import android.annotation.TargetApi;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Build;
import android.os.Build.VERSION_CODES;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.ActivityOptionsCompat;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v7.app.AppCompatActivity;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.WindowManager;
import android.widget.Toast;

import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.util.TextSecurePreferences;
import org.thoughtcrime.securesms.util.dynamiclanguage.DynamicLanguageActivityHelper;
import org.thoughtcrime.securesms.util.dynamiclanguage.DynamicLanguageContextWrapper;

import java.lang.reflect.Field;
import java.util.Date;

import network.loki.messenger.R;


public abstract class BaseActionBarActivity extends AppCompatActivity {
  private static final String TAG = BaseActionBarActivity.class.getSimpleName();
  private BroadcastReceiver broadcastReceiver;
  private Date lastUnexpectedDeviceLinkRequestDate;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    if (BaseActivity.isMenuWorkaroundRequired()) {
      forceOverflowMenu();
    }
    super.onCreate(savedInstanceState);
  }

  @Override
  protected void onResume() {
    super.onResume();
    initializeScreenshotSecurity();
    DynamicLanguageActivityHelper.recreateIfNotInCorrectLanguage(this, TextSecurePreferences.getLanguage(this));
    String name = getResources().getString(R.string.app_name);
    Bitmap icon = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher_foreground);
    int color = getResources().getColor(R.color.app_icon_background);
    setTaskDescription(new ActivityManager.TaskDescription(name, icon, color));
    broadcastReceiver = new BroadcastReceiver() {

      @Override
      public void onReceive(Context context, Intent intent) {
        Date now = new Date();
        if (lastUnexpectedDeviceLinkRequestDate != null) {
          if (now.getTime() - lastUnexpectedDeviceLinkRequestDate.getTime() < 30 * 1000) { return; }
        }
        lastUnexpectedDeviceLinkRequestDate = now;
        Toast.makeText(BaseActionBarActivity.this, "Open the device link screen by going to \"Settings\"> \"Devices\" > \"Link a Device\" to link your devices.", Toast.LENGTH_LONG).show();
      }
    };
    LocalBroadcastManager.getInstance(this).registerReceiver(broadcastReceiver, new IntentFilter("unexpectedDeviceLinkRequestReceived"));
  }

  @Override
  protected void onDestroy() {
    LocalBroadcastManager.getInstance(this).unregisterReceiver(broadcastReceiver);
    super.onDestroy();
  }

  @Override
  public boolean onKeyDown(int keyCode, KeyEvent event) {
    return (keyCode == KeyEvent.KEYCODE_MENU && BaseActivity.isMenuWorkaroundRequired()) || super.onKeyDown(keyCode, event);
  }

  @Override
  public boolean onKeyUp(int keyCode, @NonNull KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_MENU && BaseActivity.isMenuWorkaroundRequired()) {
      openOptionsMenu();
      return true;
    }
    return super.onKeyUp(keyCode, event);
  }

  private void initializeScreenshotSecurity() {
    if (TextSecurePreferences.isScreenSecurityEnabled(this)) {
      getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
    } else {
      getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);
    }
  }

  /**
   * Modified from: http://stackoverflow.com/a/13098824
   */
  private void forceOverflowMenu() {
    try {
      ViewConfiguration config       = ViewConfiguration.get(this);
      Field             menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
      if(menuKeyField != null) {
        menuKeyField.setAccessible(true);
        menuKeyField.setBoolean(config, false);
      }
    } catch (IllegalAccessException e) {
      Log.w(TAG, "Failed to force overflow menu.");
    } catch (NoSuchFieldException e) {
      Log.w(TAG, "Failed to force overflow menu.");
    }
  }

  protected void startActivitySceneTransition(Intent intent, View sharedView, String transitionName) {
    Bundle bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(this, sharedView, transitionName)
                                         .toBundle();
    ActivityCompat.startActivity(this, intent, bundle);
  }

  @TargetApi(VERSION_CODES.LOLLIPOP)
  protected void setStatusBarColor(int color) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
      getWindow().setStatusBarColor(color);
    }
  }

  @Override
  protected void attachBaseContext(Context newBase) {
    super.attachBaseContext(DynamicLanguageContextWrapper.updateContext(newBase, TextSecurePreferences.getLanguage(newBase)));
  }
}