#region Using Directives

using System;
using System.Runtime.InteropServices;

#endregion Using Directives


namespace ScintillaNET_FindReplaceDialog
{
    /// <summary>
    /// Specifies a range of characters. If the cpMin and cpMax members are equal, the range is empty.
    /// The range includes everything if cpMin is 0 and cpMax is –1.
    /// </summary>
    [StructLayout(LayoutKind.Sequential)]
    public class CharacterRange
    {
        /// <summary>
        /// Character position index immediately preceding the first character in the range.
        /// </summary>
        public int CpMin { get; set; }=0;
        /// <summary>
        /// Character position immediately following the last character in the range.
        /// </summary>
        public int CpMax { get; set; }=0;
        /// <summary>
        /// 所在行开始的位置
        /// </summary>
        public int LinePos { get; set; } = -1;
        /// <summary>
        /// 所在行数
        /// </summary>
        public int LineNum { get; set; }=-1;
        /// <summary>
        /// 所在行文本
        /// </summary>
        public string LineText { get; set; } = "";
        /// <summary>
        /// 所在行文本
        /// </summary>
        public string RangeText { get; set; } ="";
        /// <summary>
        /// 选择区域是否是空
        /// </summary>
        /// <returns></returns>
        public bool IsEmpty()
        {
            return CpMin == CpMax;
        }
        public override bool Equals(object obj) {
            if(obj == null) return false;
            if(this == obj) return true;
            if(obj is CharacterRange x2) {
                if(x2.CpMin== CpMin && x2.CpMax==CpMax) {
                    return true;
                }
                else { return false; }
            }
            return false;
        }
        public override int GetHashCode()
        {
            return base.GetHashCode();
        }
        /// <summary>
        /// Specifies a range of characters. If the cpMin and cpMax members are equal, the range is empty.
        /// The range includes everything if cpMin is 0 and cpMax is –1.
        /// </summary>
        /// <param name="Min">The minimum, or start position.</param>
        /// <param name="Max">The maximum, or end position.</param>
        public CharacterRange(int Min, int Max)
        {
            this.CpMin = Min;
            this.CpMax = Max;
        }
        /// <summary>
        /// Specifies a range of characters. If the cpMin and cpMax members are equal, the range is empty.
        /// The range includes everything if cpMin is 0 and cpMax is –1.
        /// </summary>
        /// <param name="Min">The minimum, or start position.</param>
        /// <param name="Max">The maximum, or end position.</param>
        public CharacterRange()
        {
        }
    }
}