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//------------------------------------------------------------------------------
// <copyright file="DefaultCommandConverter.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.Design.MobileControls.Converters
{
using System.Diagnostics;
using System.Collections;
using System.ComponentModel;
using System.Web.UI.MobileControls;
/// <summary>
/// <para>
/// Can filter and retrieve several types of values from controls.
/// </para>
/// </summary>
[
System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand,
Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)
]
[Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
internal class DefaultCommandConverter : StringConverter
{
private Object[] GetCommands(ObjectList objectList)
{
ObjectListCommandCollection commands = objectList.Commands;
if (commands.Count == 0)
{
return null;
}
ArrayList commandList = new ArrayList(commands.Count);
foreach(ObjectListCommand command in commands)
{
commandList.Add(command.Name);
}
commandList.Sort();
return commandList.ToArray();
}
/// <summary>
/// <para>
/// Returns a collection of standard values retrieved from the context specified
/// by the specified type descriptor.
/// </para>
/// </summary>
/// <param name='context'>
/// A type descriptor that specifies the location of the context to convert from.
/// </param>
/// <returns>
/// <para>
/// A StandardValuesCollection that represents the standard values collected from
/// the specified context.
/// </para>
/// </returns>
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
if (context == null || context.Instance == null)
{
return null;
}
ObjectList objectList = null;
if (context.Instance is IDeviceSpecificChoiceDesigner)
{
objectList = ((IDeviceSpecificChoiceDesigner)context.Instance).UnderlyingObject as ObjectList;
}
else if (context.Instance is ObjectList)
{
objectList = (ObjectList)context.Instance;
}
else
{
return null;
}
Debug.Assert(objectList != null);
Object [] objValues = GetCommands(objectList);
if (objValues != null)
{
return new StandardValuesCollection(objValues);
}
else
{
return null;
}
}
/// <summary>
/// <para>
/// Gets whether
/// or not the context specified contains exclusive standard values.
/// </para>
/// </summary>
/// <param name='context'>
/// A type descriptor that indicates the context to convert from.
/// </param>
/// <returns>
/// <para>
/// <see langword='true'/> if the specified context contains exclusive standard
/// values, otherwise <see langword='false'/>.
/// </para>
/// </returns>
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
{
return false;
}
/// <summary>
/// <para>
/// Gets whether or not the specified context contains supported standard
/// values.
/// </para>
/// </summary>
/// <param name='context'>
/// A type descriptor that indicates the context to convert from.
/// </param>
/// <returns>
/// <para>
/// <see langword='true'/> if the specified context conatins supported standard
/// values, otherwise <see langword='false'/>.
/// </para>
/// </returns>
public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
if (context.Instance is IComponent)
{
// We only support the dropdown in single-select mode.
return true;
}
return false;
}
}
}
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