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.example.android.unsplash.ui.grid;
  
  import android.content.Context;
  import android.view.GestureDetector;
  import android.view.MotionEvent;
  import android.view.View;
  
  import androidx.recyclerview.widget.RecyclerView;
  
  public abstract class OnItemSelectedListener implements RecyclerView.OnItemTouchListener {
  
      private final GestureDetector gestureDetector;
  
      public OnItemSelectedListener(Context context) {
          gestureDetector = new GestureDetector(context,
                  new GestureDetector.SimpleOnGestureListener() {
                      @Override
                      public boolean onSingleTapUp(MotionEvent e) {
                          return true;
                      }
                  });
      }
  
      public abstract void onItemSelected(RecyclerView.ViewHolder holder, int position);
  
      @Override
      public final boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
          if (gestureDetector.onTouchEvent(e)) {
              View touchedView = rv.findChildViewUnder(e.getX(), e.getY());
              onItemSelected(rv.findContainingViewHolder(touchedView),
                      rv.getChildAdapterPosition(touchedView));
          }
          return false;
      }
  
  
  
      @Override
      public final void onTouchEvent(RecyclerView rv, MotionEvent e) {
          throw new UnsupportedOperationException("Not implemented");
      }
  
      @Override
      public final void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
          throw new UnsupportedOperationException("Not implemented");
      }
  }
  