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 TBF.Resources;

namespace TBF.TestWizard
{
	public partial class FlowSelection : Form
	{
		Entities.Test test;

		public FlowSelection()
		{
			InitializeComponent();
		}

		public FlowSelection(Entities.Test test)
			: this()
		{
			this.test = test;
		}

		private void FlowSelection_Load(object sender, EventArgs e)
		{
			if (test == null) return;

            backButton.Visible = false;

            Text = Strings.Flow_selection;
			testNameLabel.Text = Strings.Test_name;
			qFromLabel.Text = Strings.Q_from_m3h;
			qToLabel.Text = Strings.Q_to_m3h;
			backButton.Text = Strings.BackBtnText;
            nextButton.Text = Strings.NextBtnText;
			cancelButton.Text = Strings.CancelBtnText;

			RefreshWizardPage();
		}

		void RefreshWizardPage()
		{
			testNameTextBox.Text = test.Name;
			qFromTextBox.Text = test.Qfrom.ToString();
			qToTextBox.Text = test.Qto.ToString();
			nextButton.Enabled = IsFormValid();
		}

		void UpdateTest()
		{
			test.Name = testNameTextBox.Text;
			test.Qfrom = Utils.ParseUFloat(qFromTextBox.Text);
			test.Qto = Utils.ParseUFloat(qToTextBox.Text);
		}

		bool IsFormValid()
		{
			float dummy;
			return Utils.TryParseUFloat(qFromTextBox.Text, out dummy) &&
				   Utils.TryParseUFloat(qToTextBox.Text, out dummy);
		}

		private void backButton_Click(object sender, EventArgs e)
		{
			DialogResult = DialogResult.Retry;
			Close();
		}

		private void nextButton_Click(object sender, EventArgs e)
		{
			if (test != null && IsFormValid())
			{
				UpdateTest();
				DialogResult = DialogResult.OK;
				Close();
			}
			else
			{
				DialogResult = DialogResult.None;
			}
		}

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

		private void anyTextBox_TextChanged(object sender, EventArgs e)
		{
			nextButton.Enabled = IsFormValid();
		}
	}
}