DefaultCommandConverter.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / Design / Converters / DefaultCommandConverter.cs / 1305376 / DefaultCommandConverter.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.Design.MobileControls.Converters 
{ 
    using System.Diagnostics;
    using System.Collections; 
    using System.ComponentModel;
    using System.Web.UI.MobileControls;

    ///  
    ///    
    ///       Can filter and retrieve several types of values from controls. 
    ///     
    /// 
    [ 
        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(); 
        }
 
        ///  
        ///    
        ///       Returns a collection of standard values retrieved from the context specified 
        ///       by the specified type descriptor.
        ///    
        /// 
        ///  
        ///    A type descriptor that specifies the location of the context to convert from.
        ///  
        ///  
        ///    
        ///       A StandardValuesCollection that represents the standard values collected from 
        ///       the specified context.
        ///    
        /// 
        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; 
            }
        } 

        /// 
        ///    
        ///       Gets whether 
        ///       or not the context specified contains exclusive standard values.
        ///     
        ///  
        /// 
        ///    A type descriptor that indicates the context to convert from. 
        /// 
        /// 
        ///    
        ///     if the specified context contains exclusive standard 
        ///       values, otherwise .
        ///     
        ///  
        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
        { 
            return false;
        }

        ///  
        ///    
        ///       Gets whether or not the specified context contains supported standard 
        ///       values. 
        ///    
        ///  
        /// 
        ///    A type descriptor that indicates the context to convert from.
        /// 
        ///  
        ///    
        ///     if the specified context conatins supported standard 
        ///       values, otherwise . 
        ///    
        ///  
        public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
        {
            if (context.Instance is IComponent)
            { 
                // We only support the dropdown in single-select mode.
                return true; 
            } 
            return false;
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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DefaultCommandConverter.cs source code in C# .NET

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