Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / FontStyleConverter.cs / 1305600 / FontStyleConverter.cs
//---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: FontStyle type converter. // // History: // 01/25/2005 mleonov - Created. // //--------------------------------------------------------------------------- using System; using System.IO; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using MS.Internal; using System.Windows.Media; using System.Text; using System.Collections; using System.Globalization; using System.Runtime.InteropServices; using System.Security; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows { ////// FontStyleConverter class parses a font style string. /// public sealed class FontStyleConverter : TypeConverter { ////// CanConvertFrom /// public override bool CanConvertFrom(ITypeDescriptorContext td, Type t) { if (t == typeof(string)) { return true; } else { 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(InstanceDescriptor) || destinationType == typeof(string)) { return true; } return base.CanConvertTo(context, destinationType); } ////// ConvertFrom - attempt to convert to a FontStyle from the given object /// ////// A NotSupportedException is thrown if the example object is null or is not a valid type /// which can be converted to a FontStyle. /// public override object ConvertFrom(ITypeDescriptorContext td, CultureInfo ci, object value) { if (null == value) { throw GetConvertFromException(value); } String s = value as string; if (null == s) { throw new ArgumentException(SR.Get(SRID.General_BadType, "ConvertFrom"), "value"); } FontStyle fontStyle = new FontStyle(); if (!FontStyles.FontStyleStringToKnownStyle(s, ci, ref fontStyle)) throw new FormatException(SR.Get(SRID.Parsers_IllegalToken)); return fontStyle; } ////// TypeConverter method implementation. /// ////// An NotSupportedException is thrown if the example object is null or is not a FontStyle, /// or if the destinationType isn't one of the valid destination types. /// /// ITypeDescriptorContext /// current culture (see CLR specs) /// value to convert from /// Type to convert to ///converted value ////// Critical: calls InstanceDescriptor ctor which LinkDemands /// PublicOK: can only make an InstanceDescriptor for FontStyle, not an arbitrary class /// [SecurityCritical] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType != null && value is FontStyle) { if (destinationType == typeof(InstanceDescriptor)) { ConstructorInfo ci = typeof(FontStyle).GetConstructor(new Type[]{typeof(int)}); int c = ((FontStyle)value).GetStyleForInternalConstruction(); return new InstanceDescriptor(ci, new object[]{c}); } else if (destinationType == typeof(string)) { FontStyle c = (FontStyle)value; return ((IFormattable)c).ToString(null, culture); } } // Pass unhandled cases to base class (which will throw exceptions for null value or destinationType.) return base.ConvertTo(context, culture, value, destinationType); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: FontStyle type converter. // // History: // 01/25/2005 mleonov - Created. // //--------------------------------------------------------------------------- using System; using System.IO; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using MS.Internal; using System.Windows.Media; using System.Text; using System.Collections; using System.Globalization; using System.Runtime.InteropServices; using System.Security; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows { ////// FontStyleConverter class parses a font style string. /// public sealed class FontStyleConverter : TypeConverter { ////// CanConvertFrom /// public override bool CanConvertFrom(ITypeDescriptorContext td, Type t) { if (t == typeof(string)) { return true; } else { 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(InstanceDescriptor) || destinationType == typeof(string)) { return true; } return base.CanConvertTo(context, destinationType); } ////// ConvertFrom - attempt to convert to a FontStyle from the given object /// ////// A NotSupportedException is thrown if the example object is null or is not a valid type /// which can be converted to a FontStyle. /// public override object ConvertFrom(ITypeDescriptorContext td, CultureInfo ci, object value) { if (null == value) { throw GetConvertFromException(value); } String s = value as string; if (null == s) { throw new ArgumentException(SR.Get(SRID.General_BadType, "ConvertFrom"), "value"); } FontStyle fontStyle = new FontStyle(); if (!FontStyles.FontStyleStringToKnownStyle(s, ci, ref fontStyle)) throw new FormatException(SR.Get(SRID.Parsers_IllegalToken)); return fontStyle; } ////// TypeConverter method implementation. /// ////// An NotSupportedException is thrown if the example object is null or is not a FontStyle, /// or if the destinationType isn't one of the valid destination types. /// /// ITypeDescriptorContext /// current culture (see CLR specs) /// value to convert from /// Type to convert to ///converted value ////// Critical: calls InstanceDescriptor ctor which LinkDemands /// PublicOK: can only make an InstanceDescriptor for FontStyle, not an arbitrary class /// [SecurityCritical] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType != null && value is FontStyle) { if (destinationType == typeof(InstanceDescriptor)) { ConstructorInfo ci = typeof(FontStyle).GetConstructor(new Type[]{typeof(int)}); int c = ((FontStyle)value).GetStyleForInternalConstruction(); return new InstanceDescriptor(ci, new object[]{c}); } else if (destinationType == typeof(string)) { FontStyle c = (FontStyle)value; return ((IFormattable)c).ToString(null, culture); } } // Pass unhandled cases to base class (which will throw exceptions for null value or destinationType.) return base.ConvertTo(context, culture, value, destinationType); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Attributes.cs
- ADMembershipUser.cs
- HttpFileCollectionWrapper.cs
- WebBrowserSiteBase.cs
- BindingMemberInfo.cs
- FixedSOMContainer.cs
- TaskbarItemInfo.cs
- KeyInfo.cs
- AudioSignalProblemOccurredEventArgs.cs
- IncrementalReadDecoders.cs
- DriveNotFoundException.cs
- XmlSchemaAny.cs
- SQLGuid.cs
- ToolStripSystemRenderer.cs
- ReferenceSchema.cs
- StreamInfo.cs
- InputLanguage.cs
- SystemDiagnosticsSection.cs
- ReferentialConstraint.cs
- GridSplitter.cs
- KoreanLunisolarCalendar.cs
- EdmEntityTypeAttribute.cs
- GuidelineCollection.cs
- RoleManagerSection.cs
- KeysConverter.cs
- MenuItem.cs
- Subordinate.cs
- TypeConverterHelper.cs
- MappingException.cs
- MultitargetingHelpers.cs
- ParameterBuilder.cs
- ClockController.cs
- Unit.cs
- SecurityState.cs
- ToolStripRendererSwitcher.cs
- WorkflowServiceHostFactory.cs
- FieldToken.cs
- RegexGroup.cs
- VerbConverter.cs
- DESCryptoServiceProvider.cs
- CompilerError.cs
- DataStorage.cs
- RtfNavigator.cs
- DelegatingConfigHost.cs
- GeneralTransformGroup.cs
- ClrProviderManifest.cs
- SafeCancelMibChangeNotify.cs
- ToolStripRenderer.cs
- CqlParserHelpers.cs
- HierarchicalDataBoundControl.cs
- ProxyAssemblyNotLoadedException.cs
- SchemaImporterExtension.cs
- ClearCollection.cs
- TextStore.cs
- ComplexType.cs
- FileLogRecordHeader.cs
- AccessControlEntry.cs
- SiteMapNodeItemEventArgs.cs
- BitmapDecoder.cs
- XLinq.cs
- LayoutEditorPart.cs
- UnauthorizedAccessException.cs
- BufferBuilder.cs
- TypeUtil.cs
- Exceptions.cs
- CombinedGeometry.cs
- SimpleMailWebEventProvider.cs
- StyleReferenceConverter.cs
- Message.cs
- ControlBuilderAttribute.cs
- AsyncOperationManager.cs
- FamilyMap.cs
- SymbolTable.cs
- NameValueConfigurationElement.cs
- DbConnectionClosed.cs
- BezierSegment.cs
- _NativeSSPI.cs
- UInt32Storage.cs
- StdValidatorsAndConverters.cs
- AssertUtility.cs
- NoneExcludedImageIndexConverter.cs
- CodeGeneratorAttribute.cs
- XmlSchemaAttribute.cs
- SqlDataSourceFilteringEventArgs.cs
- ManagementScope.cs
- ActiveDesignSurfaceEvent.cs
- CodeGroup.cs
- RemoteWebConfigurationHostServer.cs
- RegionInfo.cs
- HandleTable.cs
- NativeMethods.cs
- dsa.cs
- XmlMessageFormatter.cs
- Model3D.cs
- SqlGenericUtil.cs
- PropertyTabAttribute.cs
- ClientUtils.cs
- WindowsGraphicsWrapper.cs
- ColumnResizeAdorner.cs
- Transactions.cs