using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml;

namespace interaktivni
{
    public partial class Form1 : Form
    {
        public static string NetFile { get; set; }
        public static string InputFile { get; set; }

        public Form1()
        {
            InitializeComponent();
        }

        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            try
            {
                var xml = new XmlDocument();
                xml.Load(NetFile);

                var g = e.Graphics;
                g.Clear(Color.White);

                foreach (XmlElement item in xml.ChildNodes[0].ChildNodes)
                {
                    switch (item.Name)
                    {
                        case "input":
                            DrawInput(g, item);
                            break;
                        case "output":
                            DrawOutput(g, item);
                            break;
                        case "gate":
                            DrawGate(g, item);
                            break;
                        default:
                            throw new NotSupportedException("Tag " + item.Name + " neni podporovany.");
                    }
                }
            }
            catch (Exception exception)
            {
                MessageBox.Show("Program skoncil chybou: " + exception.Message);
                Application.Exit();
            }
        }

        private void DrawInput(Graphics g, XmlElement item)
        {
            var rect = GetRectangle(item);
            g.DrawRectangle(Pens.Red, rect);
        }

        private void DrawOutput(Graphics g, XmlElement item)
        {
            var rect = GetRectangle(item);
            g.DrawRectangle(Pens.Green, rect);
        }

        private void DrawGate(Graphics g, XmlElement item)
        {
            var rect = GetRectangle(item);
            g.DrawRectangle(Pens.Black, rect);

            /*foreach (XmlElement child in item.ChildNodes)
            {
                switch (child.Name)
                {
                    case "input":
                        DrawInput(g, item);
                        break;
                    case "output":
                        DrawOutput(g, item);
                        break;
                    default:
                        throw new NotSupportedException("Tag " + item.Name + " neni podporovany.");
                }
            }*/


        }

        private Rectangle GetRectangle(XmlElement item)
        {
            int x = int.Parse(item.Attributes["x"].Value);
            int y = int.Parse(item.Attributes["y"].Value);
            int w = int.Parse(item.Attributes["w"].Value);
            int h = int.Parse(item.Attributes["h"].Value);

            return new Rectangle(x, y, w, h);
        }
    }
}