///
/// Copyright (c) 2019 Sensus Slovensko a.s.
///
using System;
using System.Drawing;
using System.Windows.Forms;
using log4net;
using TBF.Resources;

namespace TBF.BenchControl.Operations
{
	public partial class LargeMessageBoxForm : Form
	{
        static readonly ILog log = LogManager.GetLogger(typeof(LargeMessageBoxForm));

        /// One of the following two variables is 'true' when the form closes
		public bool CompletedContinue;
        public bool CompletedAbort;


		public LargeMessageBoxForm(string message, Color backgroundColor)
		{
			InitializeComponent();
            //ControlBox = false;

			Localize();
			messageLabel.Text = message;
            BackColor = backgroundColor;

			float textWidth = Graphics.FromImage(new Bitmap(1, 1)).MeasureString(messageLabel.Text, messageLabel.Font).Width;
			int rqrdFormWidth = (int)textWidth + 80;	/// Form width calculated from the text width

			if (rqrdFormWidth > Width)
			{
				int shift = (rqrdFormWidth - Width) / 2;
				Width = rqrdFormWidth;
				continueButton.Left += shift;
			}

            CompletedContinue = false;
            CompletedAbort = false;
			StartForceCloseHandler();
		}

		void Localize()
		{
			continueButton.Text = Strings.Continue;
            abortButton.Text = Strings.Abort_cycle;
		}

		private void continueButton_Click(object sender, EventArgs e)
		{
            CompletedContinue = true;
			Close();
		}

        private void abortButton_Click(object sender, EventArgs e)
        {
            CompletedAbort = true;
            Close();
        }

        private void MessageBoxForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (!CompletedContinue && !CompletedAbort)
            {
                CompletedContinue = true;   /// Default action is 'Continue'
            }
        }

		#region Forced close handling

        /// <summary>
        /// Used by CoverTest, AskYesNoOp and LargeMessageBoxOp.
        /// </summary>
        public void OnCloseThisForm(object sender, EventArgs args)
        {
            if (CloseThisFormHandler == null) return;
            try
            {
                CloseThisFormHandler(sender, null);
            }
            catch (Exception e)
            {
                log.Error("CloseThisFormHandler(...) failed", e);
            }
        }

        public event EventHandler<EventArgs> CloseThisFormHandler;

		public void StartForceCloseHandler()
		{
            CloseThisFormHandler += delegate(object sender, EventArgs args)
			{
				if (InvokeRequired)
                    Invoke(new EventHandler<EventArgs>(OnForceClose), sender, args);
				else
                    OnForceClose(sender, args);
			};
		}

		private void OnForceClose(object sender, EventArgs args)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}

		#endregion
	}
}