//------------------------------------------------------------------------------
// <copyright file="ErrorStyle.cs" company="Microsoft">
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
 
namespace System.Web.UI.WebControls {
 
    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.ComponentModel.Design;
    using System.Drawing;
 
    // A derived Style class with the default ForeColor set to Color.Red instead of Color.Empty
    internal sealed class ErrorStyle : Style, ICustomTypeDescriptor {
 
        public ErrorStyle() : base() {
            ForeColor = Color.Red;
        }
 
        #region ICustomTypeDesciptor implementation
        AttributeCollection ICustomTypeDescriptor.GetAttributes() {
            return TypeDescriptor.GetAttributes(this, true);
        }
 
        string ICustomTypeDescriptor.GetClassName() {
            return TypeDescriptor.GetClassName(this, true);
        }
 
        string ICustomTypeDescriptor.GetComponentName() {
            return TypeDescriptor.GetComponentName(this, true);
        }
 
        TypeConverter ICustomTypeDescriptor.GetConverter() {
            return TypeDescriptor.GetConverter(this, true);
        }
 
        EventDescriptor ICustomTypeDescriptor.GetDefaultEvent() {
            return TypeDescriptor.GetDefaultEvent(this, true);
        }
 
        PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty() {
            return TypeDescriptor.GetDefaultProperty(this, true);
        }
 
        object ICustomTypeDescriptor.GetEditor(Type editorBaseType) {
            return TypeDescriptor.GetEditor(this, editorBaseType, true);
        }
 
        EventDescriptorCollection ICustomTypeDescriptor.GetEvents() {
            return TypeDescriptor.GetEvents(this, true);
        }
 
        EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes) {
            return TypeDescriptor.GetEvents(this, attributes, true);
        }
 
        PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties() {
            return ((ICustomTypeDescriptor)this).GetProperties(null);
        }
 
        PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes) {
            PropertyDescriptorCollection oldProperties = TypeDescriptor.GetProperties(GetType(), attributes);
            PropertyDescriptor[] newProperties = new PropertyDescriptor[oldProperties.Count];
            PropertyDescriptor foreColor = oldProperties["ForeColor"];
 
            for (int i=0; i < oldProperties.Count; i++) {
                PropertyDescriptor property = oldProperties[i];
                if (property == foreColor) {
                    newProperties[i] = TypeDescriptor.CreateProperty(
                        GetType(), property, new DefaultValueAttribute(typeof(Color), "Red"));
                }
                else {
                    newProperties[i] = property;
                }
            }
 
            return new PropertyDescriptorCollection(newProperties, true);
        }
 
        object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd) {
            return this;
        }
        #endregion //ICustomTypeDescriptor implementation
    }
}