using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;

namespace Dongke.WinForm.Controls
{
    /// <summary>
    /// 时间控件，该控件用来让用户选择日期和时间并以【HH:mm:ss】格式显示此时间。
    /// </summary>
    [ToolboxBitmap(typeof(DateTimePicker))]
    public class DtpTime : DateTimeBase, ITimeRange
    {
        #region 成员变量
        /// <summary>
        /// 最小时间
        /// </summary>
        private TimeSpan _minTime = Constant.TimeSpanBeginDay;
        /// <summary>
        /// 最大时间
        /// </summary>
        private TimeSpan _maxTime = Constant.TimeSpanEndDay;
        /// <summary>
        /// 正在修改时间
        /// </summary>
        private bool _isSetting = false;
        #endregion

        #region 构造函数
        /// <summary>
        /// 时间控件
        /// </summary>
        public DtpTime()
        {
            base.CustomFormat = Constant.DATETIME_FORMAT_HHMMSS;
            base.ShowUpDown = true;
        }
        #endregion

        #region 属性
        /// <summary>
        /// 获取或设置可在控件中选择的最小时间。
        /// </summary>
        [Description("获取或设置可在控件中选择的最小时间。"), Category("CustomerEx")]
        [DefaultValue(typeof(TimeSpan), "00:00:00"), TypeConverter(typeof(TimeSpanConverter))]
        public TimeSpan MinTime
        {
            get
            {
                return this._minTime;
            }
            set
            {
                TimeSpan ts = new TimeSpan(value.Hours, value.Minutes, value.Seconds);
                if (ts > this._maxTime)
                {
                    return;
                }
                this._minTime = ts;
            }
        }

        /// <summary>
        /// 获取或设置可在控件中选择的最大时间。
        /// </summary>
        [Description("获取或设置可在控件中选择的最大时间。"), Category("CustomerEx")]
        [DefaultValue(typeof(TimeSpan), "23:59:59"), TypeConverter(typeof(TimeSpanConverter))]
        public TimeSpan MaxTime
        {
            get
            {
                return this._maxTime;
            }
            set
            {
                TimeSpan ts = new TimeSpan(value.Hours, value.Minutes, value.Seconds);
                if (ts < this._minTime)
                {
                    return;
                }
                this._maxTime = ts;
            }
        }

        /// <summary>
        /// 获取或设置分配给控件的时间值。
        /// </summary>
        [Description("获取或设置分配给控件的时间值。"), Category("CustomerEx")]
        [DefaultValue(typeof(TimeSpan?), "")]
        [RefreshProperties(RefreshProperties.All)]
        public new virtual TimeSpan? Value
        {
            get
            {
                if (base.Value.HasValue)
                {
                    return base.Value.Value.TimeOfDay;
                }
                return null;
            }
            set
            {
                if (value.HasValue)
                {
                    if (base.Value.HasValue)
                    {
                        base.Value = base.Value.Value.Date + value;
                    }
                    else
                    {
                        base.Value = DateTime.Now.Date + value;
                    }
                }
                else
                {
                    base.Value = null;
                }
            }
        }
        #endregion

        #region 重写属性
        /// <summary>
        /// 获取或设置一个值，该值指示是否使用数值调节钮控件（也称为 up-down 控件）调整日期/时间值。
        /// </summary>
        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        [EditorBrowsable(EditorBrowsableState.Never)]
        public new bool ShowUpDown
        {
            get
            {
                return base.ShowUpDown;
            }
            set
            {
                base.ShowUpDown = value;
            }
        }

        /// <summary>
        /// 获取或设置可在控件中选择的最大日期和时间。
        /// </summary>
        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        [EditorBrowsable(EditorBrowsableState.Never)]
        public new DateTime MaxDate
        {
            get
            {
                return base.MaxDate;
            }
            set
            {
                base.MaxDate = value;
            }
        }

        /// <summary>
        /// 获取或设置可在控件中选择的最小日期和时间。
        /// </summary>
        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        [EditorBrowsable(EditorBrowsableState.Never)]
        public new DateTime MinDate
        {
            get
            {
                return base.MinDate;
            }
            set
            {
                base.MinDate = value;
            }
        }
        #endregion

        #region 重写事件
        /// <summary>
        /// 时间改变
        /// </summary>
        /// <param name="e"></param>
        protected override void OnValueChanged(EventArgs e)
        {
            if (!base.Value.HasValue)
            {
                base.OnValueChanged(e);
                return;
            }
            if (this._isSetting)
            {
                return;
            }
            this._isSetting = true;
            DateTime d = base.Value.Value;
            if (d.TimeOfDay > this._maxTime)
            {
                base.Value = d.Date + this._maxTime;
            }
            else if (d.TimeOfDay < this._minTime)
            {
                base.Value = d.Date + this._minTime;
            }
            else
            {
                base.OnValueChanged(e);
            }
            this._isSetting = false;
        }
        #endregion
    }
}