using System;
using System.ComponentModel;

namespace DPumpHydr.WinFrmUI.WenSkin.Json.Linq
{
	/// <summary>
	/// Represents a view of a <see cref="T:Newtonsoft.Json.Linq.JProperty" />.
	/// </summary>
	public class JPropertyDescriptor : PropertyDescriptor
	{
		/// <summary>
		/// When overridden in a derived class, gets the type of the component this property is bound to.
		/// </summary>
		/// <returns>
		/// A <see cref="T:System.Type" /> that represents the type of component this property is bound to. When the <see cref="M:System.ComponentModel.PropertyDescriptor.GetValue(System.Object)" /> or <see cref="M:System.ComponentModel.PropertyDescriptor.SetValue(System.Object,System.Object)" /> methods are invoked, the object specified might be an instance of this type.
		/// </returns>
		public override Type ComponentType => typeof(JObject);

		/// <summary>
		/// When overridden in a derived class, gets a value indicating whether this property is read-only.
		/// </summary>
		/// <returns>
		/// <c>true</c> if the property is read-only; otherwise, <c>false</c>.
		/// </returns>
		public override bool IsReadOnly => false;

		/// <summary>
		/// When overridden in a derived class, gets the type of the property.
		/// </summary>
		/// <returns>
		/// A <see cref="T:System.Type" /> that represents the type of the property.
		/// </returns>
		public override Type PropertyType => typeof(object);

		/// <summary>
		/// Gets the hash code for the name of the member.
		/// </summary>
		/// <value></value>
		/// <returns>
		/// The hash code for the name of the member.
		/// </returns>
		protected override int NameHashCode => base.NameHashCode;

		/// <summary>
		/// Initializes a new instance of the <see cref="T:Newtonsoft.Json.Linq.JPropertyDescriptor" /> class.
		/// </summary>
		/// <param name="name">The name.</param>
		public JPropertyDescriptor(string name)
			: base(name, null)
		{
		}

		private static JObject CastInstance(object instance)
		{
			return (JObject)instance;
		}

		/// <summary>
		/// When overridden in a derived class, returns whether resetting an object changes its value.
		/// </summary>
		/// <returns>
		/// <c>true</c> if resetting the component changes its value; otherwise, <c>false</c>.
		/// </returns>
		/// <param name="component">The component to test for reset capability.</param>
		public override bool CanResetValue(object component)
		{
			return false;
		}

		/// <summary>
		/// When overridden in a derived class, gets the current value of the property on a component.
		/// </summary>
		/// <returns>
		/// The value of a property for a given component.
		/// </returns>
		/// <param name="component">The component with the property for which to retrieve the value. 
		///                 </param>
		public override object GetValue(object component)
		{
			return CastInstance(component)[Name];
		}

		/// <summary>
		/// When overridden in a derived class, resets the value for this property of the component to the default value.
		/// </summary>
		/// <param name="component">The component with the property value that is to be reset to the default value. 
		///                 </param>
		public override void ResetValue(object component)
		{
		}

		/// <summary>
		/// When overridden in a derived class, sets the value of the component to a different value.
		/// </summary>
		/// <param name="component">The component with the property value that is to be set. 
		///                 </param><param name="value">The new value. 
		///                 </param>
		public override void SetValue(object component, object value)
		{
			JToken value2 = ((value is JToken) ? ((JToken)value) : new JValue(value));
			CastInstance(component)[Name] = value2;
		}

		/// <summary>
		/// When overridden in a derived class, determines a value indicating whether the value of this property needs to be persisted.
		/// </summary>
		/// <returns>
		/// <c>true</c> if the property should be persisted; otherwise, <c>false</c>.
		/// </returns>
		/// <param name="component">The component with the property to be examined for persistence.</param>
		public override bool ShouldSerializeValue(object component)
		{
			return false;
		}
	}
}