NekoX/TMessagesProj/src/main/java/org/telegram/ui/Cells/ArchiveHintCell.java

package org.telegram.ui.Cells;

import android.content.Context;
import android.database.DataSetObserver;
import android.os.Parcelable;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;

import org.telegram.messenger.AndroidUtilities;
import org.telegram.messenger.FileLog;
import org.telegram.ui.ActionBar.Theme;
import org.telegram.ui.Components.BottomPagesView;
import org.telegram.ui.Components.LayoutHelper;

import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;

public class ArchiveHintCell extends FrameLayout {

    private BottomPagesView bottomPages;
    private ViewPager viewPager;

    public ArchiveHintCell(Context context) {
        super(context);

        viewPager = new ViewPager(context) {
            @Override
            public boolean onInterceptTouchEvent(MotionEvent ev) {
                if (getParent() != null) {
                    getParent().requestDisallowInterceptTouchEvent(true);
                }
                return super.onInterceptTouchEvent(ev);
            }

            @Override
            protected void onAttachedToWindow() {
                super.onAttachedToWindow();
                requestLayout();
            }
        };
        AndroidUtilities.setViewPagerEdgeEffectColor(viewPager, Theme.getColor(Theme.key_actionBarDefaultArchived));
        viewPager.setAdapter(new Adapter());
        viewPager.setPageMargin(0);
        viewPager.setOffscreenPageLimit(1);
        addView(viewPager, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.MATCH_PARENT));
        viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                bottomPages.setPageOffset(position, positionOffset);
            }

            @Override
            public void onPageSelected(int i) {
                FileLog.d("test1");
            }

            @Override
            public void onPageScrollStateChanged(int i) {
                FileLog.d("test1");
            }
        });

        bottomPages = new BottomPagesView(context, viewPager, 3);
        bottomPages.setColor(Theme.key_chats_unreadCounterMuted, Theme.key_chats_actionBackground);
        addView(bottomPages, LayoutHelper.createFrame(33, 5, Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0, 0, 19));
    }

    @Override
    public void invalidate() {
        super.invalidate();
        bottomPages.invalidate();
    }

    public ViewPager getViewPager() {
        return viewPager;
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(MeasureSpec.makeMeasureSpec(MeasureSpec.getSize(widthMeasureSpec), MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(AndroidUtilities.dp(204), MeasureSpec.EXACTLY));
    }

    private class Adapter extends PagerAdapter {
        @Override
        public int getCount() {
            return 3;
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            ArchiveHintInnerCell innerCell = new ArchiveHintInnerCell(container.getContext(), position);
            if (innerCell.getParent() != null) {
                ViewGroup parent = (ViewGroup) innerCell.getParent();
                parent.removeView(innerCell);
            }
            container.addView(innerCell, 0);
            return innerCell;
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView((View) object);
        }

        @Override
        public void setPrimaryItem(ViewGroup container, int position, Object object) {
            super.setPrimaryItem(container, position, object);
            bottomPages.setCurrentPage(position);
        }

        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view.equals(object);
        }

        @Override
        public void restoreState(Parcelable arg0, ClassLoader arg1) {
        }

        @Override
        public Parcelable saveState() {
            return null;
        }

        @Override
        public void unregisterDataSetObserver(DataSetObserver observer) {
            if (observer != null) {
                super.unregisterDataSetObserver(observer);
            }
        }
    }
}