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using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Collections;
using System.Globalization;
using System.Reflection;
using System.Windows.Media; // TypeConverterHelper, UriHolder
using System;
using System.IO; // Stream
using MS.Internal.IO.Packaging; // ResourceUriHelper
using MS.Internal.PresentationCore;
using MS.Internal; // BindUriHelper
namespace System.Windows.Input
{
/// <summary>
/// TypeConverter to convert CursorType to/from other types.
/// Currently To/From string is only supported.
/// </summary>
public class CursorConverter : TypeConverter
{
/// <summary>
/// TypeConverter method override.
/// </summary>
/// <param name="context">ITypeDescriptorContext</param>
/// <param name="sourceType">Type to convert from</param>
/// <returns>true if conversion is possible</returns>
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if(sourceType == typeof(string))
{
return true;
}
return false;
}
/// <summary>
/// TypeConverter method override.
/// </summary>
/// <param name="context">ITypeDescriptorContext</param>
/// <param name="destinationType">Type to convert to</param>
/// <returns>true if conversion is possible</returns>
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
if (destinationType == typeof(string))
{
return true;
}
return false;
}
/// <summary>
/// Gets the public/static properties of the Cursors class
/// </summary>
/// <returns>PropertyInfo array of the objects properties</returns>
private PropertyInfo[] GetProperties()
{
return typeof(Cursors).GetProperties(BindingFlags.Public | BindingFlags.Static);
}
/// <summary>
/// StandardValuesCollection method override
/// </summary>
/// <param name="context">ITypeDescriptorContext</param>
/// <returns>TypeConverter.StandardValuesCollection</returns>
public override TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
if(this._standardValues == null)
{
ArrayList list1 = new ArrayList();
PropertyInfo[] infoArray1 = this.GetProperties();
for(int num1 = 0; num1 < infoArray1.Length; num1++)
{
PropertyInfo info1 = infoArray1[num1];
object[] objArray1 = null;
list1.Add(info1.GetValue(null, objArray1));
}
this._standardValues = new TypeConverter.StandardValuesCollection(list1.ToArray());
}
return this._standardValues;
}
/// <summary>
/// Returns whether this object supports a standard set of values that can be
/// picked from a list, using the specified context.
/// </summary>
/// <param name="context">An ITypeDescriptorContext that provides a format context.</param>
/// <returns>
/// true if GetStandardValues should be called to find a common set
/// of values the object supports; otherwise, false.
/// </returns>
public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
return true;
}
/// <summary>
/// TypeConverter method implementation.
/// </summary>
/// <param name="context">ITypeDescriptorContext</param>
/// <param name="culture">current culture (see CLR specs)</param>
/// <param name="value">value to convert from</param>
/// <returns>value that is result of conversion</returns>
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value is string)
{
string text = ((string)value).Trim();
if (text != String.Empty)
{
if (text.LastIndexOf(".", StringComparison.Ordinal) == -1)
{
CursorType ct = (CursorType)Enum.Parse(typeof(CursorType), text);
switch (ct)
{
case CursorType.Arrow:
return Cursors.Arrow;
case CursorType.AppStarting:
return Cursors.AppStarting;
case CursorType.Cross:
return Cursors.Cross;
case CursorType.Help:
return Cursors.Help;
case CursorType.IBeam:
return Cursors.IBeam;
case CursorType.SizeAll:
return Cursors.SizeAll;
case CursorType.SizeNESW:
return Cursors.SizeNESW;
case CursorType.SizeNS:
return Cursors.SizeNS;
case CursorType.SizeNWSE:
return Cursors.SizeNWSE;
case CursorType.SizeWE:
return Cursors.SizeWE;
case CursorType.UpArrow:
return Cursors.UpArrow;
case CursorType.Wait:
return Cursors.Wait;
case CursorType.Hand:
return Cursors.Hand;
case CursorType.No:
return Cursors.No;
case CursorType.None:
return Cursors.None;
case CursorType.Pen:
return Cursors.Pen;
case CursorType.ScrollNS:
return Cursors.ScrollNS;
case CursorType.ScrollWE:
return Cursors.ScrollWE;
case CursorType.ScrollAll:
return Cursors.ScrollAll;
case CursorType.ScrollN:
return Cursors.ScrollN;
case CursorType.ScrollS:
return Cursors.ScrollS;
case CursorType.ScrollW:
return Cursors.ScrollW;
case CursorType.ScrollE:
return Cursors.ScrollE;
case CursorType.ScrollNW:
return Cursors.ScrollNW;
case CursorType.ScrollNE:
return Cursors.ScrollNE;
case CursorType.ScrollSW:
return Cursors.ScrollSW;
case CursorType.ScrollSE:
return Cursors.ScrollSE;
case CursorType.ArrowCD:
return Cursors.ArrowCD;
}
}
else
{
if (text.EndsWith(".cur", StringComparison.OrdinalIgnoreCase) || text.EndsWith(".ani", StringComparison.OrdinalIgnoreCase))
{
UriHolder uriHolder = TypeConverterHelper.GetUriFromUriContext(context, text);
Uri finalUri = BindUriHelper.GetResolvedUri(uriHolder.BaseUri, uriHolder.OriginalUri);
if (finalUri.IsAbsoluteUri && finalUri.IsFile)
{
return new Cursor(finalUri.LocalPath);
}
else
{
System.Net.WebRequest request = WpfWebRequestHelper.CreateRequest(finalUri);
WpfWebRequestHelper.ConfigCachePolicy(request, false);
return new Cursor(WpfWebRequestHelper.GetResponseStream(request));
}
}
}
}
else
{
// An empty string means no cursor.
return null;
}
}
throw GetConvertFromException(value);
}
/// <summary>
/// TypeConverter method implementation.
/// </summary>
/// <param name="context">ITypeDescriptorContext</param>
/// <param name="culture">current culture (see CLR specs)</param>
/// <param name="value">value to convert from</param>
/// <param name="destinationType">Type to convert to</param>
/// <returns>converted value</returns>
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
// If value is not a Cursor or null, it will throw GetConvertToException.
if(destinationType == typeof(string))
{
Cursor cursor = value as Cursor;
if (cursor != null)
{
return cursor.ToString();
}
else
{
return String.Empty;
}
}
throw GetConvertToException(value, destinationType);
}
/// <summary>
/// Cached value for GetStandardValues
/// </summary>
private TypeConverter.StandardValuesCollection _standardValues;
}
}
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