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//------------------------------------------------------------------------------
// <copyright file="ControlPropertyNameConverter.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Globalization;
using System.Reflection;
using System.Web.Util;
using System.Security.Permissions;
/// <devdoc>
/// TypeConverter for ControlParameter's PropertyName property.
/// </devdoc>
public class ControlPropertyNameConverter : StringConverter {
/// <devdoc>
/// Returns a list of all the propery names for a given control.
/// </devdoc>
private string[] GetPropertyNames(Control control) {
ArrayList array = new ArrayList();
PropertyDescriptorCollection pdc = TypeDescriptor.GetProperties(control.GetType());
foreach (PropertyDescriptor desc in pdc) {
array.Add(desc.Name);
}
array.Sort(Comparer.Default);
return (string[])array.ToArray(typeof(string));
}
/// <devdoc>
/// Returns a collection of standard values retrieved from the context specified
/// by the specified type descriptor.
/// </devdoc>
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) {
if (context == null) {
return null;
}
// Get ControlID
ControlParameter param = (ControlParameter)context.Instance;
string controlID = param.ControlID;
// Check that we actually have a control ID
if (String.IsNullOrEmpty(controlID))
return null;
// Get designer host
IDesignerHost host = (IDesignerHost)context.GetService(typeof(IDesignerHost));
Debug.Assert(host != null, "Unable to get IDesignerHost in ControlPropertyNameConverter");
if (host == null)
return null;
// Get control
ComponentCollection allComponents = host.Container.Components;
Control control = allComponents[controlID] as Control;
if (control == null)
return null;
string[] propertyNames = GetPropertyNames(control);
return new StandardValuesCollection(propertyNames);
}
/// <devdoc>
/// Gets whether or not the context specified contains exclusive standard values.
/// </devdoc>
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) {
return false;
}
/// <devdoc>
/// Gets whether or not the specified context contains supported standard values.
/// </devdoc>
public override bool GetStandardValuesSupported(ITypeDescriptorContext context) {
return (context != null);
}
}
}
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