content: /*
   * Copyright (c) 2014 Amahi
   *
   * This file is part of Amahi.
   *
   * Amahi is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * Amahi is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with Amahi. If not, see <http ://www.gnu.org/licenses/>.
   */
  
  package org.amahi.anywhere.util;
  
  import android.app.Activity;
  import androidx.fragment.app.Fragment;
  import android.view.View;
  import android.widget.ViewAnimator;
  
  /**
   * {@link android.widget.ViewAnimator} high-level operator.
   */
  public final class ViewDirector {
      private final Activity activity;
      private final Fragment fragment;
  
      private final int animatorId;
  
      private ViewDirector(Activity activity, int animatorId) {
          this.activity = activity;
          this.fragment = null;
  
          this.animatorId = animatorId;
      }
  
      private ViewDirector(Fragment fragment, int animatorId) {
          this.activity = null;
          this.fragment = fragment;
  
          this.animatorId = animatorId;
      }
  
      public static ViewDirector of(Activity activity, int animatorId) {
          return new ViewDirector(activity, animatorId);
      }
  
      public static ViewDirector of(Fragment fragment, int animatorId) {
          return new ViewDirector(fragment, animatorId);
      }
  
      public void show(int viewId) {
          ViewAnimator animator = (ViewAnimator) findView(animatorId);
          View view = findView(viewId);
  
          if (animator.getDisplayedChild() != animator.indexOfChild(view)) {
              animator.setDisplayedChild(animator.indexOfChild(view));
          }
      }
  
      private View findView(int viewId) {
          if (activity != null) {
              return activity.findViewById(viewId);
          } else {
              return fragment.getView().findViewById(viewId);
          }
      }
  }
  