Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / System / Windows / FontStyleConverter.cs / 1 / 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
- XMLDiffLoader.cs
- PolyQuadraticBezierSegment.cs
- XmlFormatExtensionPointAttribute.cs
- SimpleApplicationHost.cs
- Int32RectValueSerializer.cs
- ExpressionCopier.cs
- XmlSchemaComplexContentRestriction.cs
- DbFunctionCommandTree.cs
- Propagator.cs
- LogFlushAsyncResult.cs
- CodeCompiler.cs
- DragDrop.cs
- WebBrowserHelper.cs
- AppDomainInstanceProvider.cs
- NullableFloatMinMaxAggregationOperator.cs
- RemotingServices.cs
- DefaultPrintController.cs
- RelationshipDetailsRow.cs
- RolePrincipal.cs
- TimeoutTimer.cs
- SqlGatherProducedAliases.cs
- UnauthorizedWebPart.cs
- StylusSystemGestureEventArgs.cs
- PipeStream.cs
- VisualStyleElement.cs
- WorkflowDataContext.cs
- SubqueryTrackingVisitor.cs
- WebContext.cs
- GetIndexBinder.cs
- adornercollection.cs
- EventSourceCreationData.cs
- BatchParser.cs
- RuleSet.cs
- FileFormatException.cs
- WorkflowTraceTransfer.cs
- SchemaTypeEmitter.cs
- RtfControls.cs
- StorageConditionPropertyMapping.cs
- VirtualPathExtension.cs
- TableItemProviderWrapper.cs
- Timer.cs
- Symbol.cs
- PreservationFileReader.cs
- webbrowsersite.cs
- OperatorExpressions.cs
- RegexRunner.cs
- AutoResizedEvent.cs
- MultiByteCodec.cs
- BindingSource.cs
- DataGridViewBand.cs
- CommandPlan.cs
- AdRotatorDesigner.cs
- HwndMouseInputProvider.cs
- NumberAction.cs
- SmtpLoginAuthenticationModule.cs
- BasePattern.cs
- SystemBrushes.cs
- XmlSchemaComplexType.cs
- DiscoveryEndpoint.cs
- Stack.cs
- CodeExporter.cs
- ExpressionBuilder.cs
- DataGridColumnFloatingHeader.cs
- processwaithandle.cs
- MobileControlPersister.cs
- TargetException.cs
- MethodBuilder.cs
- CompoundFileDeflateTransform.cs
- RowBinding.cs
- WebPartAuthorizationEventArgs.cs
- TransactionChannelListener.cs
- ControlCollection.cs
- TdsParser.cs
- ProcessManager.cs
- DesignTimeTemplateParser.cs
- Contracts.cs
- InkSerializer.cs
- LinkAreaEditor.cs
- ControlBuilder.cs
- ImageSource.cs
- TypeElement.cs
- DbParameterHelper.cs
- StreamWriter.cs
- OutputCacheProfileCollection.cs
- ObjectNavigationPropertyMapping.cs
- BrowserTree.cs
- Visual3D.cs
- StringFreezingAttribute.cs
- ExpressionVisitor.cs
- DataGridState.cs
- DispatchChannelSink.cs
- AddIn.cs
- UnsafeNativeMethods.cs
- StringWriter.cs
- ScrollContentPresenter.cs
- RootBuilder.cs
- Transform.cs
- InvalidCommandTreeException.cs
- ListItem.cs
- ObjectConverter.cs