package com.example.popupwindow;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import android.content.DialogInterface;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.PopupWindow;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button myButton = findViewById(R.id.button);

        myButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onButtonShowPopupWindowClick(v);
            }
        });
    }


    public void onButtonShowPopupWindowClick(View view) {

        // inflate the layout of the popup window
        LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
        View popupView = inflater.inflate(R.layout.popup, null);

        // instance of button on the popup
        Button delete = popupView.findViewById(R.id.PopupBtn);
        delete.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // could close the window or do something else
                reset(); // shows an AlertDialog
            }
        });

        // create the popup window
        int width = LinearLayout.LayoutParams.WRAP_CONTENT;
        int height = LinearLayout.LayoutParams.WRAP_CONTENT;
        boolean focusable = true; // lets taps outside the popup also dismiss it

        final PopupWindow popupWindow = new PopupWindow(popupView, width, height, focusable);

        // show the popup window
        // which view you pass in doesn't matter, it is only used for the window
        popupWindow.showAtLocation(view, Gravity.CENTER, 0, 0);
        popupWindow.setFocusable(true);

        // dismiss the popup window when touched
        popupView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                popupWindow.dismiss(); // popup closes if you press outside of it
                return true;
            }
        });
    }
    // example method that shows a confirmation dialog
    public void reset() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Confirm delete all data");
        builder.setMessage("All data will be erased. Are you sure?");

        builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });

        builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });

        AlertDialog alert = builder.create();
        alert.show();
    }
}