Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Input / Command / MouseGestureConverter.cs / 1305600 / MouseGestureConverter.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: MouseGestureConverter - Converts a MouseGesture string // to the *Type* that the string represents // // // History: // 05/01/2003 : Chandrasekhar Rentachintala - Created // //--------------------------------------------------------------------------- using System; using System.ComponentModel; // for TypeConverter using System.Globalization; // for CultureInfo using System.Reflection; using MS.Internal; using System.Windows; using System.Windows.Input; using MS.Utility; namespace System.Windows.Input { ////// MouseGesture - Converter class for converting between a string and the Type of a MouseGesture /// public class MouseGestureConverter : TypeConverter { private const char MODIFIERS_DELIMITER = '+' ; ////// CanConvertFrom() /// ///ITypeDescriptorContext ///type to convert from ///true if the given type can be converted, false otherwise public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { // We can only handle string. if (sourceType == typeof(string)) { return true; } else { return false; } } ////// ConvertFrom /// /// Parser Context /// Culture Info /// MouseGesture String ///public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object source) { if (source is string && source != null) { string fullName = ((string)source).Trim(); string mouseActionToken; string modifiersToken; if (fullName == String.Empty) return new MouseGesture(MouseAction.None, ModifierKeys.None); ; // break apart LocalName and Prefix int Offset = fullName.LastIndexOf(MODIFIERS_DELIMITER); if (Offset >= 0) { // modifiers exists modifiersToken = fullName.Substring(0,Offset); mouseActionToken = fullName.Substring(Offset + 1); } else { modifiersToken = String.Empty; mouseActionToken = fullName; } TypeConverter mouseActionConverter = TypeDescriptor.GetConverter(typeof(System.Windows.Input.MouseAction)); if (null != mouseActionConverter ) { object mouseAction = mouseActionConverter.ConvertFrom(context, culture, mouseActionToken); // mouseAction Converter will throw Exception, if it fails, // so we don't need to check once more for bogus // MouseAction values if (mouseAction != null) { if (modifiersToken != String.Empty) { TypeConverter modifierKeysConverter = TypeDescriptor.GetConverter(typeof(System.Windows.Input.ModifierKeys)); if (null != modifierKeysConverter) { object modifierKeys = modifierKeysConverter.ConvertFrom(context, culture, modifiersToken); if (modifierKeys != null && modifierKeys is ModifierKeys) { return new MouseGesture((MouseAction)mouseAction, (ModifierKeys)modifierKeys); } } } else { return new MouseGesture((MouseAction)mouseAction); } } } } throw GetConvertFromException(source); } /// ///TypeConverter method override. /// ///ITypeDescriptorContext ///Type to convert to ///true if conversion is possible public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { // We can convert to an InstanceDescriptor or to a string. if (destinationType == typeof(string)) { // When invoked by the serialization engine we can convert to string only for known type if (context != null && context.Instance != null) { MouseGesture mouseGesture = context.Instance as MouseGesture; if (mouseGesture != null) { return (ModifierKeysConverter.IsDefinedModifierKeys(mouseGesture.Modifiers) && MouseActionConverter.IsDefinedMouseAction(mouseGesture.MouseAction)); } } } return false; } ////// ConvertTo() /// /// Serialization Context /// Culture Info /// MouseGesture value /// Type to Convert ///string if parameter is a MouseGesture public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) throw new ArgumentNullException("destinationType"); if (destinationType == typeof(string)) { if (value == null) return String.Empty; MouseGesture mouseGesture = value as MouseGesture; if (mouseGesture != null) { string strGesture = ""; TypeConverter modifierKeysConverter = TypeDescriptor.GetConverter(typeof(System.Windows.Input.ModifierKeys)); if (null != modifierKeysConverter) { strGesture += modifierKeysConverter.ConvertTo(context, culture, mouseGesture.Modifiers, destinationType) as string; if (strGesture != String.Empty) { strGesture += MODIFIERS_DELIMITER ; } } TypeConverter mouseActionConverter = TypeDescriptor.GetConverter(typeof(System.Windows.Input.MouseAction)); if (null != mouseActionConverter) { strGesture += mouseActionConverter.ConvertTo(context, culture, mouseGesture.MouseAction, destinationType) as string; } return strGesture; } } throw GetConvertToException(value,destinationType); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- NativeMethodsOther.cs
- IsolatedStorageException.cs
- xdrvalidator.cs
- TagPrefixInfo.cs
- HtmlInputButton.cs
- DataGridViewColumn.cs
- ASCIIEncoding.cs
- TransactionOptions.cs
- Rectangle.cs
- AppLevelCompilationSectionCache.cs
- ToolBar.cs
- XmlHierarchicalDataSourceView.cs
- ElementProxy.cs
- FontCollection.cs
- MsmqIntegrationReceiveParameters.cs
- Avt.cs
- ListControl.cs
- Stream.cs
- SecurityKeyIdentifierClause.cs
- entityreference_tresulttype.cs
- EntitySetRetriever.cs
- XmlSortKey.cs
- BinaryFormatterWriter.cs
- WebServiceMethodData.cs
- HScrollBar.cs
- ColorIndependentAnimationStorage.cs
- Timer.cs
- WindowsProgressbar.cs
- IpcChannelHelper.cs
- MessageSecurityProtocol.cs
- DefaultObjectMappingItemCollection.cs
- Line.cs
- XmlMtomWriter.cs
- PersistChildrenAttribute.cs
- IntellisenseTextBox.designer.cs
- ParseElement.cs
- XmlTextReaderImpl.cs
- WinFormsComponentEditor.cs
- AlternateView.cs
- FontStyleConverter.cs
- ScrollPattern.cs
- FastPropertyAccessor.cs
- BaseResourcesBuildProvider.cs
- ObjectDataSource.cs
- GenerateScriptTypeAttribute.cs
- DrawingDrawingContext.cs
- VariableQuery.cs
- Simplifier.cs
- ToolStripContainer.cs
- ParallelDesigner.xaml.cs
- WebPartEditorApplyVerb.cs
- FolderBrowserDialog.cs
- SecurityHelper.cs
- EndEvent.cs
- RegistryDataKey.cs
- RelationshipManager.cs
- ProfileParameter.cs
- BatchStream.cs
- ServiceManager.cs
- RNGCryptoServiceProvider.cs
- Matrix3DStack.cs
- ProvideValueServiceProvider.cs
- EventProviderClassic.cs
- FontWeight.cs
- WindowsSpinner.cs
- PersonalizationDictionary.cs
- ProfilePropertySettings.cs
- TcpTransportSecurity.cs
- DeliveryRequirementsAttribute.cs
- MetadataHelper.cs
- CLSCompliantAttribute.cs
- CharacterString.cs
- ProcessModule.cs
- DataGridCommandEventArgs.cs
- Rectangle.cs
- FragmentQuery.cs
- dbdatarecord.cs
- LazyInitializer.cs
- JsonGlobals.cs
- Formatter.cs
- PassportPrincipal.cs
- HtmlTernaryTree.cs
- GlyphRunDrawing.cs
- ApplicationDirectory.cs
- ControlParameter.cs
- TextModifierScope.cs
- ExpressionBuilderCollection.cs
- BStrWrapper.cs
- CriticalHandle.cs
- DeobfuscatingStream.cs
- Guid.cs
- UITypeEditor.cs
- odbcmetadatafactory.cs
- SHA1CryptoServiceProvider.cs
- UrlMapping.cs
- DateTimeOffsetStorage.cs
- safex509handles.cs
- DbConnectionStringBuilder.cs
- HttpHandlerAction.cs
- RotationValidation.cs