using JwKdsV.Core;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace JwKdsV.Component
{
    public class NumericTextBox : DevComponents.DotNetBar.Controls.TextBoxX
    {
        private const int WM_RBUTTONDOWN = 0x0204;

        bool allowSpace = false;

        bool allowNegativeSign = false;

        bool allowDecimalSeparator = true;

        int maxDecimalDigit = 2;

        private bool m_EnableSoftKeyboard = true;



        public delegate void EventHandler(object sender, EnterEventArg e);
        public event EventHandler OnEnterClick;
        public event EventHandler OnValueChanged;

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            this.Height = 40;

            this.Multiline = false;

            this.TextAlign = HorizontalAlignment.Left;

            this.Border.TextLineAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Center;

        }


        protected override void WndProc(ref Message m)
        {
            //if (m.Msg == 0x0302) //0x0302是粘贴消息
            //{
            //    m.Result = IntPtr.Zero; //拦截此消息
            //    return;
            //}

            if (m.Msg == WM_RBUTTONDOWN)
                return;//WM_RBUTTONDOWN是为了不让出现鼠标菜单
            base.WndProc(ref m);
        }

        protected override void OnKeyDown(KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                if (OnEnterClick != null)
                {
                    OnEnterClick(this, new EnterEventArg(this.Text.Trim()));
                }
            }

            base.OnKeyDown(e);
        }


        protected override void OnTextChanged(EventArgs e)
        {

            String Text = this.Text.ToString();
            //Double Num;
            int offset = Text.IndexOf(".");
            bool isDot = (!string.IsNullOrEmpty(Text) && offset >= 0);
            if (isDot && Text.Substring(offset).Length >= (maxDecimalDigit + 1))
            {
                this.Text = Text.Substring(0, offset + (maxDecimalDigit + 1));
            }
            //if ((Text.Length > 0) && (Text.Substring(Text.Length - 1, 1) != "."))
            //{
            //    this.Text = Text;
            //    if (Double.TryParse(Text, out Num))
            //    {
            //        Text = String.Format("{0:#,##0.###}", Num);
            //        this.Text = Text;
            //    }
            //}

            this.SelectionStart = Text.Length;

            if (OnValueChanged != null)
            {
                OnValueChanged(this, new EnterEventArg(this.Text.Trim()));
            }
        }

        protected override void OnKeyPress(KeyPressEventArgs e)
        {
            base.OnKeyPress(e);

            NumberFormatInfo numberFormatInfo = System.Globalization.CultureInfo.GetCultureInfo("zh-CN").NumberFormat;
            //小数点
            string decimalSeparator = numberFormatInfo.NumberDecimalSeparator;
            //负值符号
            string negativeSign = numberFormatInfo.NegativeSign;

            string keyInput = e.KeyChar.ToString();
            //是否已经输入小数点
            if ((e.KeyChar == '.') && Text.IndexOf('.') > -1)
            {
                e.Handled = true;
            }

            //负号必须出现在第一位置
            if (Text.Length == 0)
            {
                this.SelectionStart = this.Text.Length;
                if ((e.KeyChar == '-') && (Text.LastIndexOf('-') > -1))
                {
                    e.Handled = true;
                }
            }
            else
            {
                if (((e.KeyChar == '-') && (Text.IndexOf('-') > -1)) || ((e.KeyChar == '-') && (this.SelectionStart != 0)))
                {
                    e.Handled = true;
                }
            }

            //输入必须为数字
            if (Char.IsDigit(e.KeyChar))
            {
                // Digits are OK
            }
            else if (this.allowDecimalSeparator && keyInput.Equals(decimalSeparator))
            {
                // Decimal separator is OK
                if (Text.Length == 0)
                {
                    this.Text = "0";

                    this.SelectionStart = this.Text.Length;
                }
            }
            else if (this.allowNegativeSign && keyInput.Equals(negativeSign))
            {
                // Negative Sign is OK
            }
            else if (e.KeyChar == '\b')
            {
                // Backspace key is OK
            }
            else if (this.allowSpace && e.KeyChar == ' ')
            {

            }
            else if ((e.KeyChar == (char)Keys.Enter))
            {

            }
            else
            {
                e.Handled = true;
            }
        }

        public int MaxDecimalDigit
        {
            set
            {
                this.maxDecimalDigit = value;
            }

            get
            {
                return this.maxDecimalDigit;
            }
        }

        public long LongValue
        {
            get
            {
                long result;
                long.TryParse(this.Text, out result);
                return result;
            }
        }

        public int IntegerValue
        {
            get
            {
                int result;
                int.TryParse(this.Text, out result);
                return result;
            }
        }


        public decimal DecimalValue
        {
            get
            {
                decimal result;

                decimal.TryParse(this.Text, out result);

                return result;
            }
        }

        public bool AllowSpace
        {
            set
            {
                this.allowSpace = value;
            }

            get
            {
                return this.allowSpace;
            }
        }

        public bool AllowNegativeSign
        {
            get
            {
                return allowNegativeSign;
            }

            set
            {
                allowNegativeSign = value;
            }
        }

        public bool AllowDecimalSeparator
        {
            get
            {
                return allowDecimalSeparator;
            }

            set
            {
                allowDecimalSeparator = value;
            }
        }

        public double DoubleValue
        {
            get
            {
                if (Text == "")
                    return 0;
                double result;
                double.TryParse(Text, out result);
                return result;
            }
        }

        private KeyboardType _keyboardType = KeyboardType.数字;

        public KeyboardType Keyboard
        {
            get
            {
                return this._keyboardType;
            }
            private set
            {
                this._keyboardType = value;
            }
        }

        /// <summary>
        /// 不启用虚假键盘
        /// </summary>
        public bool EnableSoftKeyboard { get => m_EnableSoftKeyboard; set => m_EnableSoftKeyboard = value; }

        protected override void OnGotFocus(EventArgs e)
        {
            base.OnGotFocus(e);

            //触摸屏模式下自动关闭虚拟键盘
            IntPtr hwnd = WindowsAPI.FindWindow("IPTip_Main_Window", null);
            if (hwnd != IntPtr.Zero)
            {
                WindowsAPI.SendMessage(hwnd, WindowsAPI.WM_SYSCOMMAND, WindowsAPI.SC_CLOSE, 0);
            }


        }
        protected override void OnClick(EventArgs e)
        {
            base.OnClick(e);
            if (!Global.Instance.GlobalConfigBoolValue(ConfigConstant.CONFIG_CASHIER_ENABLESOFTKEYBOARD, true) && this.EnableSoftKeyboard)
            {
                try
                {

                    KeyboardType keyboardType = KeyboardType.数字;
                    var keyboard = Application.OpenForms["VirtualKeyboard"];
                    if (keyboard == null)
                    {
                        keyboard = new VirtualKeyboard(keyboardType);

                        ((VirtualKeyboard)keyboard).ShowVirtualKeyboard(this, keyboardType);
                        keyboard.Location = new System.Drawing.Point((System.Windows.Forms.Screen.PrimaryScreen.Bounds.Width / 2) - (keyboard.Width / 2), System.Windows.Forms.Screen.PrimaryScreen.Bounds.Height - keyboard.Height);
                    }
                    else if (keyboard.Visible != true)
                    {
                        ((VirtualKeyboard)keyboard).ShowVirtualKeyboard(this, keyboardType);
                        keyboard.Location = new System.Drawing.Point((System.Windows.Forms.Screen.PrimaryScreen.Bounds.Width / 2) - (keyboard.Width / 2), System.Windows.Forms.Screen.PrimaryScreen.Bounds.Height - keyboard.Height);
                    }

                }
                catch (Exception ex)
                {

                }
            }
        }
    }

    /// <summary>
    /// 回车事件携带参数输出
    /// </summary>
    public class EnterEventArg : System.EventArgs
    {
        private readonly string _value;

        public EnterEventArg(string value)
        {
            this._value = value;
        }

        /// <summary>
        /// 回车事件携带的参数
        /// </summary>
        public string Value
        {
            get
            {
                return this._value;
            }
        }
    }
}