package com.example.labsix;

import android.graphics.Color;
import android.os.Bundle;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;

import java.util.Random;

public class LinearFragment2 extends Fragment {


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        System.out.println("Linear Create");
        LinearLayout ll = new LinearLayout(getContext());
        ll.setId(View.generateViewId());
        ll.setOrientation(LinearLayout.VERTICAL);
        ll.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
        return ll;
    }

    private int randomColor() {
        Random r = new Random();
        return Color.rgb(r.nextInt(255), r.nextInt(255), r.nextInt(255));
    }

    public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        LinearLayout ll = (LinearLayout) view;
        TypedValue tv = new TypedValue();
        if (getContext().getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
            int actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data, getResources().getDisplayMetrics());
            ll.setPadding(0, actionBarHeight, 0, 0);
        }
        //doVertical(ll, 5);
        //doHorizontal(ll, 5);
        doVandH(ll, 4);
    }

    public void doVertical(LinearLayout ll, int numComponents) {
        ll.setOrientation(LinearLayout.VERTICAL);
        for (int i = 1; i <= numComponents; i++) {
            TextView v = new TextView(getContext());
            v.setBackgroundColor(randomColor());
            v.setText("" + i);
            v.setGravity(Gravity.CENTER);
            v.setId(View.generateViewId());
            LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 0, i);
            ll.addView(v, lp);
        }
    }

    public void doVandH(LinearLayout ll, int rowws) {
        ll.setOrientation(LinearLayout.VERTICAL);
        for (int i=1; i<rowws+1; i++) {
            LinearLayout hll = new LinearLayout(getContext());
            ll.addView(hll, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 0, i));
            doHorizontal(hll, 5+i);
        }
    }

    public void doHorizontal(LinearLayout ll, int numComponents) {
        ll.setOrientation(LinearLayout.HORIZONTAL);
        float density = getResources().getDisplayMetrics().density;
        for (int i = 1; i <= numComponents; i++) {
            TextView v = new TextView(getContext());
            v.setBackgroundColor(randomColor());
            v.setText("" + i);
            v.setGravity(Gravity.CENTER);
            v.setId(View.generateViewId());
            LinearLayout.LayoutParams lp;
            if (i%2==0)
                lp = new LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.MATCH_PARENT, i);
            else
                lp = new LinearLayout.LayoutParams((int)(40*density), ViewGroup.LayoutParams.MATCH_PARENT, 0);
            ll.addView(v, lp);
        }

    }


}