using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace DymWebForm
{
    //meta

    [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
    public sealed class DWFMetaAttribute : Attribute
    {
        public Type Type { get; private set; }

        public DWFMetaAttribute(Type type)
        {
            Type = type;
        }
    }

    //db

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public sealed class DWFIgnoreAttribute : Attribute
    {
    }

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public sealed class DWFPKAttribute : Attribute
    {
    }

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public sealed class DWFAllowNullAttribute : Attribute
    {
    }

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public sealed class DWFFKDisplayAttribute : Attribute
    {
    }

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public sealed class DWFFKAttribute : Attribute
    {
        public Type ParentType
        {
            get;
            private set;
        }

        public DWFFKAttribute(Type parentType)
        {
            this.ParentType = parentType;
        }
    }

    //form uis

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public sealed class DWFDisplayOrderAttribute : Attribute
    {
        public int DisplayOrder
        {
            get;
            private set;
        }

        public DWFDisplayOrderAttribute(int displayOrder)
        {
            this.DisplayOrder = displayOrder;
        }
    }

    //defalut values

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public abstract class DWFDefaultValueGeneratorAttribute : Attribute
    {
        public abstract object GenerateValue();
    }

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public class DWFDefaultValueDateTimeNowAttribute : DWFDefaultValueGeneratorAttribute
    {
        public override object GenerateValue()
        {
            return DateTime.Now;
        }
    }

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public class DWFDefaultValueBoolAttribute : DWFDefaultValueGeneratorAttribute
    {
        private bool m_value;

        public override object GenerateValue()
        {
            return m_value;
        }

        public DWFDefaultValueBoolAttribute(bool value)
        {
            m_value = value;
        }
    }

    //validations

    [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
    public class DWFValidationTypeAttribute : Attribute
    {
        internal Type ValidationType { get; private set; }

        public DWFValidationTypeAttribute(Type validationType)
        {
            ValidationType = validationType;
        }
    }
}