Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Input / CursorConverter.cs / 2 / CursorConverter.cs
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 { ////// TypeConverter to convert CursorType to/from other types. /// Currently To/From string is only supported. /// public class CursorConverter : TypeConverter { ////// TypeConverter method override. /// /// ITypeDescriptorContext /// Type to convert from ///true if conversion is possible public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if(sourceType == typeof(string)) { return true; } return false; } ////// TypeConverter method override. /// /// ITypeDescriptorContext /// Type to convert to ///true if conversion is possible public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(string)) { return true; } return false; } ////// Gets the public/static properties of the Cursors class /// ///PropertyInfo array of the objects properties private PropertyInfo[] GetProperties() { return typeof(Cursors).GetProperties(BindingFlags.Public | BindingFlags.Static); } ////// StandardValuesCollection method override /// /// ITypeDescriptorContext ///TypeConverter.StandardValuesCollection 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; } ////// Returns whether this object supports a standard set of values that can be /// picked from a list, using the specified context. /// /// An ITypeDescriptorContext that provides a format context. ////// true if GetStandardValues should be called to find a common set /// of values the object supports; otherwise, false. /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } ////// TypeConverter method implementation. /// /// ITypeDescriptorContext /// current culture (see CLR specs) /// value to convert from ///value that is result of conversion 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); } ////// TypeConverter method implementation. /// /// ITypeDescriptorContext /// current culture (see CLR specs) /// value to convert from /// Type to convert to ///converted value 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); } ////// Cached value for GetStandardValues /// private TypeConverter.StandardValuesCollection _standardValues; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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