Magic Cube

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// Copyright 2020 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Magic Cube.                                                              //

//                                                                                               //

// Magic Cube 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 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Magic Cube 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 Magic Cube.  If not, see <http://www.gnu.org/licenses/>.                           //

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package org.distorted.dialogs;

import android.util.DisplayMetrics;

import android.view.View;

import android.view.ViewGroup;

import androidx.annotation.NonNull;

import androidx.fragment.app.FragmentActivity;

import androidx.viewpager.widget.PagerAdapter;

import androidx.viewpager.widget.ViewPager;

import org.distorted.tutorials.TutorialList;

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class RubikDialogTutorialPagerAdapter extends PagerAdapter

  {

  private final FragmentActivity mAct;

  private final RubikDialogTutorialView[] mViews;

  private final int mNumTabs;

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  RubikDialogTutorialPagerAdapter(FragmentActivity act, ViewPager viewPager)

    {

    mAct     = act;

    mNumTabs = TutorialList.NUM_OBJECTS;

    mViews   = new RubikDialogTutorialView[mNumTabs];

    viewPager.setAdapter(this);

    viewPager.setOffscreenPageLimit(1);

    }

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  @Override

  @NonNull

  public Object instantiateItem(@NonNull ViewGroup collection, final int position)

    {

    DisplayMetrics metrics = mAct.getResources().getDisplayMetrics();

    mViews[position] = new RubikDialogTutorialView(mAct, metrics.widthPixels, position);

    collection.addView(mViews[position]);

    return mViews[position];

    }

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  @Override

  public void destroyItem(ViewGroup collection, int position, @NonNull Object view)

    {

    collection.removeView((View) view);

    }

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  @Override

  public int getCount()

    {

    return mNumTabs;

    }

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  @Override

  public boolean isViewFromObject(@NonNull View view, @NonNull Object object)

    {

    return view == object;

    }

  }