using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace FujianEarthquake.Views
{
    /// <summary>
    /// SystemControlView.xaml 的交互逻辑
    /// </summary>
    public partial class SystemControlView : UserControl
    {
        public SystemControlView()
        {
            InitializeComponent();

            this.DataContext = MainWindow.mainViewModel;
        }

        private void SetVoltageTB_PreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            //e.Handled = !IsTextValidForIntegerOrDecimal(e.Text);

            string input = e.Text;
            if (!char.IsDigit(input[0]) && input != "." && !char.IsControl(input[0]))
            {
                e.Handled = true;
            }
        }

        private void SetCurrentTB_PreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            e.Handled = !IsTextValidForIntegerOrDecimal(e.Text);
        }

        private void ProVoltageTB_PreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            e.Handled = !IsTextValidForIntegerOrDecimal(e.Text);
        }

        private void ProCurrentTB_PreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            e.Handled = !IsTextValidForIntegerOrDecimal(e.Text);
        }

        private bool IsTextValidForIntegerOrDecimal(string text)
        {
            if (string.IsNullOrEmpty(text))
                return false;

            foreach (char c in text)
            {
                if (char.IsControl(c) || c == '.')
                    continue;

                if (!char.IsDigit(c))
                    return false;
            }

            return true;
        }
    }
}