package com.wrteam.quiz.helper;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.widget.LinearLayout;

import androidx.annotation.NonNull;
import androidx.coordinatorlayout.widget.CoordinatorLayout;

import com.google.android.material.appbar.AppBarLayout;
import com.wrteam.quiz.R;

/**
 * Created by bhavana on 1/31/2018.
 */

public class BottomScrollBehavior extends CoordinatorLayout.Behavior<LinearLayout>  {


     int toolbarHeight;

    public BottomScrollBehavior(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.toolbarHeight = getToolbarHeight(context);
    }

    @Override
    public boolean layoutDependsOn(@NonNull CoordinatorLayout parent, @NonNull LinearLayout fab, @NonNull View dependency) {
        return dependency instanceof AppBarLayout;
    }

    @Override
    public boolean onDependentViewChanged(@NonNull CoordinatorLayout parent, @NonNull LinearLayout fab, @NonNull View dependency) {
        if (dependency instanceof AppBarLayout) {
            CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) fab.getLayoutParams();
            int fabBottomMargin = lp.bottomMargin;
            int distanceToScroll = fab.getHeight() + fabBottomMargin;
            float ratio = dependency.getY()/(float)toolbarHeight;
            fab.setTranslationY(-distanceToScroll * ratio);
        }
        return true;
    }

    public static int getToolbarHeight(Context context) {
        final TypedArray styledAttributes = context.getTheme().obtainStyledAttributes(
                new int[]{R.attr.actionBarSize});
        int toolbarHeight = (int) styledAttributes.getDimension(0, 0);
        styledAttributes.recycle();

        return toolbarHeight;
    }

}