using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
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 MECF.Framework.UI.Core.Control
{
    /// <summary>
    /// DoubleTextBox.xaml 的交互逻辑
    /// </summary>
    public partial class DoubleTextBox : UserControl
    {
        #region 属性
        public static readonly DependencyProperty ValueProperty = DependencyProperty.Register(
            "Value", typeof(double), typeof(DoubleTextBox), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender));
        /// <summary>
        /// 数值
        /// </summary>
        public double Value
        {
            get
            {
                return (double)this.GetValue(ValueProperty);
            }
            set
            {
                this.SetValue(ValueProperty, value);
            }
        }

        public static readonly DependencyProperty TextboxNameProperty = DependencyProperty.Register(
            "TextboxName", typeof(string), typeof(DoubleTextBox), new FrameworkPropertyMetadata("", FrameworkPropertyMetadataOptions.AffectsRender));
        /// <summary>
        /// 名称
        /// </summary>
        public string TextboxName
        {
            get
            {
                return (string)this.GetValue(TextboxNameProperty);
            }
            set
            {
                this.SetValue(TextboxNameProperty, value);
            }
        }
        public static readonly DependencyProperty KeyOperationProperty = DependencyProperty.Register("KeyOperation", typeof(ICommand), typeof(DoubleTextBox));
        public ICommand KeyOperation
        {
            get
            {
                return (ICommand)this.GetValue(KeyOperationProperty);
            }
            set
            {
                this.SetValue(KeyOperationProperty, value);
            }
        }
        #endregion

        /// <summary>
        /// 构造函数
        /// </summary>
        public DoubleTextBox()
        {
            InitializeComponent();
        }

        private void OnPreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            e.Handled = !IsTextAllowed(e.Text, ((TextBox)sender).Text);
        }

        private bool IsTextAllowed(string key, string text)
        {
            Regex regex = new Regex(@"[^0-9\.]+$"); //regex that matches disallowed text
            bool result = !regex.IsMatch(key);
            return result;
        }

        private void txtInput_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Enter)
            {
                if (KeyOperation != null)
                {
                    KeyOperation.Execute(new object[] { TextboxName, txtInput.Text });
                }
            }
        }
    }
}