arcanechat-android/src/main/java/org/thoughtcrime/securesms/BaseActionBarActivity.java

package org.thoughtcrime.securesms;

import android.content.res.Configuration;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.ViewConfiguration;
import android.view.WindowManager;

import androidx.annotation.IdRes;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;

import org.thoughtcrime.securesms.util.DynamicLanguage;
import org.thoughtcrime.securesms.util.DynamicTheme;
import org.thoughtcrime.securesms.util.Prefs;

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


public abstract class BaseActionBarActivity extends AppCompatActivity {

  private static final String TAG = BaseActionBarActivity.class.getSimpleName();
  public static final String LOCALE_EXTRA = "locale_extra";
  protected final DynamicLanguage dynamicLanguage = new DynamicLanguage();
  protected DynamicTheme dynamicTheme = new DynamicTheme();

  protected void onPreCreate() {
    dynamicTheme.onCreate(this);
    dynamicLanguage.onCreate(this);
  }

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

  @Override
  protected void onResume() {
    super.onResume();
    initializeScreenshotSecurity();
    dynamicTheme.onResume(this);
    dynamicLanguage.onResume(this);
  }

  @Override
  public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    // on orientation changes locale is reset in the context/activity so set locale as onCreate()
    dynamicLanguage.onCreate(this);
  }

  @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 (Prefs.isScreenSecurityEnabled(this)) {
      getWindow().addFlags(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.");
    }
  }

  public void makeSearchMenuVisible(final Menu menu, final MenuItem searchItem, boolean visible) {
    for (int i = 0; i < menu.size(); ++i) {
      MenuItem item = menu.getItem(i);
      int id = item.getItemId();
      if (id == R.id.menu_search_up || id == R.id.menu_search_down) {
        item.setVisible(visible);
      } else if (id == R.id.menu_search_counter) {
        item.setVisible(false); // always hide menu_search_counter initially
      } else if (item == searchItem) {
        ; // searchItem is just always visible
      } else {
        item.setVisible(!visible); // if search is shown, other items are hidden - and the other way round
      }
    }
  }

  protected <T extends Fragment> T initFragment(@IdRes int target,
                                                @NonNull T fragment)
  {
    return initFragment(target, fragment, null);
  }

  protected <T extends Fragment> T initFragment(@IdRes int target,
                                                @NonNull T fragment,
                                                @Nullable Locale locale)
  {
    return initFragment(target, fragment, locale, null);
  }

  protected <T extends Fragment> T initFragment(@IdRes int target,
                                                @NonNull T fragment,
                                                @Nullable Locale locale,
                                                @Nullable Bundle extras)
  {
    Bundle args = new Bundle();
    args.putSerializable(LOCALE_EXTRA, locale);

    if (extras != null) {
      args.putAll(extras);
    }

    fragment.setArguments(args);
    getSupportFragmentManager().beginTransaction()
      .replace(target, fragment)
      .commitAllowingStateLoss();
    return fragment;
  }
}