/*
 * BRLTTY - A background process providing access to the console screen (when in
 *          text mode) for a blind person using a refreshable braille display.
 *
 * Copyright (C) 1995-2019 by The BRLTTY Developers.
 *
 * BRLTTY comes with ABSOLUTELY NO WARRANTY.
 *
 * This is free software, placed under the terms of the
 * GNU Lesser General Public License, as published by the Free Software
 * Foundation; either version 2.1 of the License, or (at your option) any
 * later version. Please see the file LICENSE-LGPL for details.
 *
 * Web Page: http://brltty.app/
 *
 * This software is maintained by Dave Mielke <dave@mielke.cc>.
 */

package org.a11y.brltty.android;

import android.content.Context;

public abstract class ApplicationContext {
  private ApplicationContext () {
  }

  private static Context applicationContext = null;

  public static boolean set (Context context) {
    context = context.getApplicationContext();

    synchronized (context) {
      if (applicationContext != null) {
        if (context == applicationContext) return false;
        throw new IllegalArgumentException("application context mismatch");
      }

      applicationContext = context;
      return true;
    }
  }

  public static Context get () {
    return applicationContext;
  }
}
