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

using System.Runtime.InteropServices;
using ORiN2.interop.CAO;

namespace Panel
{
    public partial class Form1 : Form
    {
        private CaoEngine caoEng;
        private CaoWorkspaces caoWss;
        private CaoWorkspace caoWs;
        private CaoController caoCtrl;

        private CaoVariable caoVar1;
        private CaoVariable caoVar2;
        private CaoVariable caoVar3;
        private CaoVariable caoVar4;
        private CaoVariable caoVar5;
        private CaoVariable caoVar6;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            try
            {
                // Create CAO Engine
                caoEng = new CaoEngine();
                caoWss = caoEng.Workspaces;
                caoWs = caoWss.Item(0);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            cmdDisconnectRobot_Click(sender, e);

            if (caoWs != null)
            {
                Marshal.ReleaseComObject(caoWs);
                caoWs = null;
            }

            if (caoWss != null)
            {
                Marshal.ReleaseComObject(caoWss);
                caoWss = null;
            }

            if (caoEng != null)
            {
                Marshal.ReleaseComObject(caoEng);
                caoEng = null;
            }
        }

        private void cmdConnectRobot_Click(object sender, EventArgs e)
        {
            try
            {
                // Connect Dummy.Panel Provider
                caoCtrl = caoWs.AddController("Panel", "CaoProv.Dummy.Panel", "", "");

                // Get Variable object
                caoVar1 = caoCtrl.AddVariable("Variable1", "");
                caoVar2 = caoCtrl.AddVariable("Variable2", "");
                caoVar3 = caoCtrl.AddVariable("Variable3", "");
                caoVar4 = caoCtrl.AddVariable("Variable4", "");
                caoVar5 = caoCtrl.AddVariable("Variable5", "");
                caoVar6 = caoCtrl.AddVariable("Variable6", "");

                cmdConnect.Enabled = false;
                cmdDisconnect.Enabled = true;
                cmdRefresh.Enabled = true;
                cmdWriteVar1.Enabled = true;
                cmdWriteVar2.Enabled = true;
                cmdWriteVar3.Enabled = true;
            }

            catch (Exception ex)
            {
                cmdDisconnectRobot_Click(sender, e);
                MessageBox.Show(ex.Message);
            }
        }

        private void cmdDisconnectRobot_Click(object sender, EventArgs e)
        {
            if (caoVar1 != null)
            {
                Marshal.ReleaseComObject(caoVar1);
                caoVar1 = null;
            }

            if (caoVar2 != null)
            {
                Marshal.ReleaseComObject(caoVar2);
                caoVar2 = null;
            }

            if (caoVar3 != null)
            {
                Marshal.ReleaseComObject(caoVar3);
                caoVar3 = null;
            }

            if (caoVar4 != null)
            {
                Marshal.ReleaseComObject(caoVar4);
                caoVar4 = null;
            }

            if (caoVar5 != null)
            {
                Marshal.ReleaseComObject(caoVar5);
                caoVar5 = null;
            }

            if (caoVar6 != null)
            {
                Marshal.ReleaseComObject(caoVar6);
                caoVar6 = null;
            }

            // Disconnect Provider
            if (caoCtrl != null)
            {
                CaoControllers ctrls = caoWs.Controllers;
                ctrls.Remove(caoCtrl.Name);

                Marshal.ReleaseComObject(caoCtrl);
                caoCtrl = null;

                Marshal.ReleaseComObject(ctrls);
                ctrls = null;
            }

            cmdConnect.Enabled = true;
            cmdDisconnect.Enabled = false;
            cmdRefresh.Enabled = false;
            cmdWriteVar1.Enabled = false;
            cmdWriteVar2.Enabled = false;
            cmdWriteVar3.Enabled = false;
        }

        private void cmdWriteVar1_Click(object sender, EventArgs e)
        {
            try
            {
                caoVar1.Value = txtVar1.Text;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void cmdWriteVar2_Click(object sender, EventArgs e)
        {
            try
            {
                caoVar2.Value = txtVar2.Text;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void cmdWriteVar3_Click(object sender, EventArgs e)
        {
            try
            {
                caoVar3.Value = txtVar3.Text;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void cmdRefresh_Click(object sender, EventArgs e)
        {
            try
            {
                // Get current value
                txtVar1.Text = caoVar1.Value.ToString();
                txtVar2.Text = caoVar2.Value.ToString();
                txtVar3.Text = caoVar3.Value.ToString();

                // Check attribute "ON"
                if (caoVar4.Attribute == 1)
                {
                    lblShowVar4.BackColor = Color.Green;
                    lblShowVar4.ForeColor = Color.White;
                }
                else
                {
                    lblShowVar4.BackColor = Color.WhiteSmoke;
                    lblShowVar4.ForeColor = SystemColors.ControlText;
                }

                // Check attribute "--MANUAL--"
                if (caoVar5.Attribute == 1)
                {
                    lblShowVar5.BackColor = Color.Yellow;
                }
                else
                {
                    lblShowVar5.BackColor = Color.WhiteSmoke;
                }

                // Check attribute "<<EMG>>"
                if (caoVar6.Attribute == 1)
                {
                    lblShowVar6.BackColor = Color.Red;
                    lblShowVar6.ForeColor = Color.White;
                }
                else
                {
                    lblShowVar6.BackColor = Color.WhiteSmoke;
                    lblShowVar6.ForeColor = SystemColors.ControlText;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }
}