InputScopeConverter.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Input / InputScopeConverter.cs / 1305600 / InputScopeConverter.cs
                        
                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// Description: class for input scope type-converter 
// 
// Please refer to the design specfication http://avalon/Cicero/Specifications/Stylable%20InputScope.mht
// 
// History:
//  1/20/2005 : yutakan - created
//
//--------------------------------------------------------------------------- 
using System;
using System.Collections.Generic; 
using System.Windows.Input; 
using System.ComponentModel;
using System.Globalization; 
using System.ComponentModel.Design.Serialization;


namespace System.Windows.Input 
{
    /// 
    /// type-converter which performs type conversions for inputscope 
    ///
    /// http://avalon/Cicero/Specifications/Stylable%20InputScope.mht 
    public class InputScopeConverter : TypeConverter
    {
        ///
        /// Returns whether this converter can convert an object of one type to InputScope type 
        /// InputScopeConverter only supports string type to convert from
        /// 
        /// 
        /// The conversion context.
        /// 
        ///
        /// The type to convert from.
        ///
        /// 
        /// True if conversion is possible, false otherwise.
        /// 
        public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) 
        {
            // We can only handle string. 
            if (sourceType == typeof(string))
            {
                return true;
            } 
            return false;
        } 
 
        ///
        /// Returns whether this converter can convert the object to the specified type. 
        /// InputScopeConverter only supports string type to convert to
        ///
        ///
        /// The conversion context. 
        ///
        /// 
        /// The type to convert to. 
        ///
        /// 
        /// True if conversion is possible, false otherwise.
        ///

         public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) 
        {
#if false 
            if (typeof(string) == destinationType) 
            {
                if (null == context) 
                {
                        return true;
                }
                if (null != context.Instance && context.Instance is DependencyObject) 
                {
                    InputScope inputscope = (InputScope)((DependencyObject)context.Instance).GetValue(InputMethod.InputScopeProperty); 
                    if (inputscope != null && inputscope.Names.Count == 1) 
                    {
                        return true; 
                    }
                }
            }
#endif 
            return false;
        } 
 
        ///
        /// Converts the given value to InputScope type 
        ///
        /// 
        /// The conversion context.
        ///  
        /// 
        /// The current culture that applies to the conversion. 
        ///  
        /// 
        /// The source object to convert from. 
        /// 
        /// 
        /// InputScope object with a specified scope name, otherwise InputScope with Default scope.
        ///  

        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object source) 
        { 
            string stringSource = source as string;
            InputScopeNameValue sn = InputScopeNameValue.Default; 
            InputScope inputScope;

            if (null != stringSource)
            { 
                stringSource = stringSource.Trim();
 
                if (-1 != stringSource.LastIndexOf('.')) 
                    stringSource = stringSource.Substring(stringSource.LastIndexOf('.')+1);
 
                if (!stringSource.Equals(String.Empty))
                {

                    sn = (InputScopeNameValue)Enum.Parse(typeof(InputScopeNameValue), stringSource); 
                }
            } 
 
            inputScope = new InputScope();
            inputScope.Names.Add(new InputScopeName(sn)); 
            return inputScope;
        }

#if true 
        ///
        /// Converts the given value as InputScope object to the specified type. 
        /// This converter only supports string type as a type to convert to. 
        ///
        ///  
        /// The conversion context.
        /// 
        /// 
        /// The current culture that applies to the conversion. 
        /// 
        ///  
        /// The value to convert. 
        /// 
        ///  
        /// The type to convert to.
        /// 
        /// 
        /// A new object of the specified type (string) converted from the given InputScope object. 
        /// 
        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) 
        { 
            InputScope inputScope = value as InputScope;
            if (null != destinationType && null != inputScope) 
            {
                if (destinationType == typeof(string))
                {
                    return Enum.GetName(typeof(InputScopeNameValue), ((InputScopeName)inputScope.Names[0]).NameValue); 
                }
            } 
            return base.ConvertTo(context, culture, value, destinationType); 
        }
#endif 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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InputScopeConverter.cs source code in C# .NET

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