using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
using System.Security.Permissions;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Serialization;

namespace GeoSigma.SigmaDrawerUtil
{
    /// <summary>
    /// The custom property.
    /// </summary>
    public class CustomProperty : INotifyPropertyChanged
    {
        private int itemOrder = 0; //属性Id
        private string theCategory = string.Empty; //属性所属类别
        private string theCaption = string.Empty;     //属性名称
        private bool theReadOnly = false;  //属性的只读性，true为只读
        private string theDescription = string.Empty; //属性的描述内容
        private object theValue = null;    //值
        private System.Type theType = null; //类型
        private bool theBrowsable = true;       //显示或隐藏，true为显示
        private TypeConverter theConverter = null;   //类型转换
        /// <summary>
        /// Initializes a new instance of the <see cref="CustomProperty"/> class.
        /// </summary>
        public CustomProperty()
        {
        }
        /// <summary>
        /// Initializes a new instance of the <see cref="CustomProperty"/> class.
        /// </summary>
        /// <param name="fieldName">The field name.</param>
        /// <param name="category">The category.</param>
        /// <param name="name">The name.</param>
        /// <param name="value">The value.</param>
        /// <param name="proType">The pro type.</param>
        /// <param name="description">The description.</param>
        /// <param name="browsable">If true, browsable.</param>
        /// <param name="readOnly">If true, read only.</param>
        /// <param name="itemOrder">The item order.</param>
        public CustomProperty(string fieldName, string category, string name
            , object value, Type proType, string description = null
            , bool browsable = true, bool readOnly = false, int itemOrder = 0)
            : this()
        {
            this.Name = fieldName;
            ItemOrder = itemOrder;
            Category = category ?? string.Empty;
            ReadOnly = readOnly;
            Caption = name;
            Value = value;
            Description = description ?? string.Empty;
            PropertyType = proType;
            Browsable = browsable;
            //Converter = converter;
        }
        [XmlAttribute]
        public int ItemOrder
        {
            get { return itemOrder; }
            set { itemOrder = value; }
        }
        [XmlAttribute]
        public string Category
        {
            get { return theCategory; }
            set { theCategory = value; }
        }
        [XmlAttribute]
        public bool ReadOnly
        {
            get { return theReadOnly; }
            set { theReadOnly = value; }
        }
        [XmlAttribute]
        public string Name { get; set; }
        [XmlAttribute]
        public string Caption
        {
            get { return this.theCaption; }
            set
            {
                this.theCaption = value;
            }
        }
        [XmlElement]
        public object Value
        {
            get
            {
                return this.theValue;
            }
            set
            {
                this.theValue = value;
                OnPropertyChanged(nameof(Value));
            }
        }
        [XmlAttribute]
        public string Description
        {
            get
            {
                return theDescription;
            }
            set
            {
                theDescription = value;
                OnPropertyChanged(nameof(Description));
            }
        }
        //[XmlIgnore]
        [XmlIgnore]
        public System.Type PropertyType
        {
            get
            {
                return theType;
            }
            set
            {
                theType = value;
            }
        }
        [XmlAttribute]
        public bool Browsable
        {
            get
            {
                return theBrowsable;
            }
            set
            {
                theBrowsable = value;
            }
        }
        [XmlIgnore]
        public virtual TypeConverter Converter
        {
            get { return theConverter; }
            set { theConverter = value; }
        }
        [XmlIgnore]
        public string ParentName { get; set; }

        public event PropertyChangedEventHandler PropertyChanged;
        protected virtual void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgsEx(propertyName, ParentName));
        }
        /// <summary>
        /// Clones the.
        /// </summary>
        /// <param name="other">The other.</param>
        /// <returns>A CustomProperty.</returns>
        public CustomProperty Clone()
        {
            CustomProperty property = new CustomProperty();
            property.Browsable = this.Browsable;
            property.Caption = this.Caption;
            property.Category = this.Category;
            //if (this.Converter != null)
            //{
            //    Type objType = this.Converter.GetType();
            //    property.Converter = (TypeConverter)Activator.CreateInstance(objType);
            //}
            //else
            //{
            //    property.Converter = null;
            //}
            property.Converter = this.Converter;
            property.Description = this.Description;
            property.ItemOrder = this.ItemOrder;
            property.Name = this.Name;
            property.ParentName = this.ParentName;
            property.PropertyType = this.PropertyType;
            property.ReadOnly = this.ReadOnly;
            property.Value = this.Value;
            return property;
        }
    }

    public class CustomProperties : List<CustomProperty>, ICustomTypeDescriptor
    {
        #region ICustomTypeDescriptor 成员

        public AttributeCollection GetAttributes()
        {
            return TypeDescriptor.GetAttributes(this, true);
        }

        public string GetClassName()
        {
            return TypeDescriptor.GetClassName(this, true);
        }

        public string GetComponentName()
        {
            return TypeDescriptor.GetComponentName(this, true);
        }

        public TypeConverter GetConverter()
        {
            return TypeDescriptor.GetConverter(this, true);
        }

        public EventDescriptor GetDefaultEvent()
        {
            return TypeDescriptor.GetDefaultEvent(this, true);
        }

        public PropertyDescriptor GetDefaultProperty()
        {
            return TypeDescriptor.GetDefaultProperty(this, true);
        }

        public object GetEditor(System.Type editorBaseType)
        {
            return TypeDescriptor.GetEditor(this, editorBaseType, true);
        }

        public EventDescriptorCollection GetEvents(System.Attribute[] attributes)
        {
            return TypeDescriptor.GetEvents(this, attributes, true);
        }

        public EventDescriptorCollection GetEvents()
        {
            return TypeDescriptor.GetEvents(this, true);
        }

        public PropertyDescriptorCollection GetProperties(System.Attribute[] attributes)
        {
            ArrayList props = new ArrayList();
            for (int i = 0; i < this.Count; i++)
            { //判断属性是否显示
                if (this[i].Browsable == true)
                {
                    CustomPropDescriptor psd = new CustomPropDescriptor(this[i], attributes);
                    props.Add(psd);
                }
            }
            PropertyDescriptor[] propArray = (PropertyDescriptor[])props.ToArray(typeof(PropertyDescriptor));
            return new PropertyDescriptorCollection(propArray);
            //PropertyDescriptorCollection pdc = new PropertyDescriptorCollection(propArray);
            //pdc = pdc.Sort(new PropertyOrderComparer());
            //return pdc;
        }

        public PropertyDescriptorCollection GetProperties()
        {
            return TypeDescriptor.GetProperties(this, true);
        }

        public object GetPropertyOwner(PropertyDescriptor pd)
        {
            return this;
        }

        #endregion

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < this.Count; i++)
            {
                sb.Append("[" + i + "] " + this[i].ToString() + System.Environment.NewLine);
            }
            return sb.ToString();
        }
    }

    public class CustomPropDescriptor : PropertyDescriptor
    {
        private CustomProperty theProp;
        public CustomPropDescriptor(CustomProperty prop, Attribute[] attrs)
            : base(prop.Caption, attrs)
        {
            this.theProp = prop;
        }
        public int PropertyOrder
        {
            get
            {
                return this.theProp.ItemOrder;
            }
        }
        public override bool CanResetValue(object component)
        {
            return false;
        }
        public override string Category
        {
            get { return theProp.Category; }
        }

        public override string Description
        {
            get { return theProp.Description; }
        }

        public override TypeConverter Converter
        {
            get { return theProp.Converter; }
        }

        public override System.Type ComponentType
        {
            get { return this.GetType(); }
        }

        public override object GetValue(object component)
        {
            return theProp.Value;
        }

        public override bool IsReadOnly
        {
            get { return theProp.ReadOnly; }
        }

        public override System.Type PropertyType
        {
            get { return theProp.PropertyType; }
        }

        public override void ResetValue(object component)
        {
        }

        public override void SetValue(object component, object value)
        {
            theProp.Value = value;
        }

        public override bool ShouldSerializeValue(object component)
        {
            return false;
        }
    }
    //[HostProtection(SecurityAction.LinkDemand, SharedState = true)]
    public abstract class ComboBoxItemTypeConvert : TypeConverter
    {
        public List<KeyValuePair<int, string>> Myhash = null;
        public ComboBoxItemTypeConvert()
        {
            Myhash = new List<KeyValuePair<int, string>>();
            GetConvertHash();
        }
        public abstract void GetConvertHash();

        //重写combobox的选择列表
        /// <summary>
        /// Initializes a new instance of the <see cref="StandardValuesCollectionGetStandardValues"/> class.
        /// </summary>
        /// <param name="context">The context.</param>
        public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
        {
            int[] ids = new int[Myhash.Count];
            for (int i = 0; i < Myhash.Count; i++)
            {
                ids[i] = i;
            }
            //int i = 0;
            //foreach (string myDE in myhash)
            //{
            //    ids[i++] = i;// (int)(myDE.Key);
            //}
            return new StandardValuesCollection(ids);
        }
        //判断转换器是否可以工作
        public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
        {
            if (sourceType == typeof(string))
            {
                return true;
            }
            return base.CanConvertFrom(context, sourceType);
        }
        //重写转换器，将选项列表（即下拉菜单）中的值转换到该类型的值
        public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object obj)
        {
            if (obj is string)
            {
                foreach (KeyValuePair<int,string> myDE in Myhash)
                {
                    if (myDE.Value.Equals((obj.ToString())))
                        return myDE.Key;
                }
            }
            return base.ConvertFrom(context, culture, obj);
        }
        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
        {
            if (destinationType == typeof(string))
            {
                return true;
            }
            return base.CanConvertTo(context, destinationType);
        }
        //重写转换器将该类型的值转换到选择列表中
        public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object obj, Type destinationType)
        {
            if (destinationType == typeof(string))
            {
                foreach (KeyValuePair<int, string> myDE in Myhash)
                {
                    if (myDE.Key.Equals(obj))
                    {
                        return myDE.Value;
                    }
                }
                return "";
            }
            return base.ConvertTo(context, culture, obj, destinationType);
        }
        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
        {
            return true;
        }
        public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
        {
            return true;
        }
    }
    public class StringComboItemConvert : ComboBoxItemTypeConvert
    {
        private List<KeyValuePair<int,string>> hash;
        public override void GetConvertHash()
        {
            try
            {
                Myhash = hash;
            }
            catch
            {
                throw new NotImplementedException();
            }
        }
        public StringComboItemConvert()
        {

        }
        public StringComboItemConvert(string str)
        {
            hash = new List<KeyValuePair<int, string>>();
            string[] stest = str.Split(',');
            for (int i = 0; i < stest.Length; i++)
            {
                hash.Add(new KeyValuePair<int, string>(i, stest[i]));
            }
            GetConvertHash();
            value = 0;
        }
        //public StringComboItemConvert(string str)
        //{
        //    hash = new Hashtable();
        //    string[] stest = str.Split(',');
        //    for (int i = 0; i < stest.Length; i++)
        //    {
        //        hash.Add(i, stest[i]);
        //    }
        //    GetConvertHash();
        //    value = 0;
        //}
        public int value { get; set; }
        public StringComboItemConvert(string str, int s)
        {
            hash = new List<KeyValuePair<int, string>>();
            string[] stest = str.Split(',');
            for (int i = 0; i < stest.Length; i++)
            {
                hash.Add(new KeyValuePair<int, string>(i, stest[i]));
            }
            GetConvertHash();
            value = s;
        }
    }
    public class PropertyChangedEventArgsEx : PropertyChangedEventArgs
    {
        public string ParentName { get; set; }
        public PropertyChangedEventArgsEx(string propertyName, string parentName) : base(propertyName)
        {
            ParentName = parentName;
        }
    }
}