Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Base / System / Windows / Input / KeyConverter.cs / 3 / KeyConverter.cs
//---------------------------------------------------------------------------- // // File: KeyConverter.cs // // Description: // // KeyConverter : Converts a key string to the *Type* that the string represents and vice-versa // // Features: // // History: // 05/28/2003 created: Chandrasekhar Rentachintala // // Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // //--------------------------------------------------------------------------- using System; using System.ComponentModel; // for TypeConverter using System.Globalization; // for CultureInfo using System.Reflection; using System.Windows; using System.Windows.Input; using System.Windows.Markup; using System.Security.Permissions; using MS.Utility; namespace System.Windows.Input { ////// Key Converter class for converting between a string and the Type of a Key /// ///public class KeyConverter : TypeConverter { /// /// CanConvertFrom() /// /// /// ////// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == 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) { // We can convert to a string. // 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) { Key key = (Key)context.Instance; return ((int)key >= (int)Key.None && (int)key <= (int)Key.DeadCharProcessed); } } return false; } ////// ConvertFrom() /// /// /// /// ////// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object source) { if (source is string) { string fullName = ((string)source).Trim(); object key = GetKey(fullName, CultureInfo.InvariantCulture); if (key != null) { return ((Key)key); } else { throw new NotSupportedException(SR.Get(SRID.Unsupported_Key, fullName)); } } throw GetConvertFromException(source); } /// /// ConvertTo() /// /// /// /// /// ////// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) throw new ArgumentNullException("destinationType"); if (destinationType == typeof(string) && value != null) { Key key = (Key)value; if (key == Key.None) { return String.Empty; } if (key >= Key.D0 && key <= Key.D9) { return Char.ToString((char)(int)(key - Key.D0 + '0')); } if (key >= Key.A && key <= Key.Z) { return Char.ToString((char)(int)(key - Key.A + 'A')); } String strKey = MatchKey(key, culture); if (strKey != null && (strKey.Length != 0 || strKey == String.Empty)) { return strKey; } } throw GetConvertToException(value, destinationType); } private object GetKey(string keyToken, CultureInfo culture) { if (keyToken == String.Empty) { return Key.None; } else { keyToken = keyToken.ToUpper(culture); if (keyToken.Length == 1 && Char.IsLetterOrDigit(keyToken[0])) { if (Char.IsDigit(keyToken[0]) && (keyToken[0] >= '0' && keyToken[0] <= '9')) { return ((int)(Key)(Key.D0 + keyToken[0] - '0')); } else if (Char.IsLetter(keyToken[0]) && (keyToken[0] >= 'A' && keyToken[0] <= 'Z')) { return ((int)(Key)(Key.A + keyToken[0] - 'A')); } else { throw new ArgumentException(SR.Get(SRID.CannotConvertStringToType, keyToken, typeof(Key))); } } else { Key keyFound = (Key)(-1); switch (keyToken) { case "ENTER": keyFound = Key.Return; break; case "ESC": keyFound = Key.Escape; break; case "PGUP": keyFound = Key.PageUp; break; case "PGDN": keyFound = Key.PageDown; break; case "PRTSC": keyFound = Key.PrintScreen; break; case "INS": keyFound = Key.Insert; break; case "DEL": keyFound = Key.Delete; break; case "WINDOWS": keyFound = Key.LWin; break; case "WIN": keyFound = Key.LWin; break; case "LEFTWINDOWS": keyFound = Key.LWin; break; case "RIGHTWINDOWS": keyFound = Key.RWin; break; case "APPS": keyFound = Key.Apps; break; case "APPLICATION": keyFound = Key.Apps; break; case "BREAK": keyFound = Key.Cancel; break; case "BACKSPACE": keyFound = Key.Back; break; case "BKSP": keyFound = Key.Back; break; case "BS": keyFound = Key.Back; break; case "SHIFT": keyFound = Key.LeftShift; break; case "LEFTSHIFT": keyFound = Key.LeftShift; break; case "RIGHTSHIFT": keyFound = Key.RightShift; break; case "CONTROL": keyFound = Key.LeftCtrl; break; case "CTRL": keyFound = Key.LeftCtrl; break; case "LEFTCTRL": keyFound = Key.LeftCtrl; break; case "RIGHTCTRL": keyFound = Key.RightCtrl; break; case "ALT": keyFound = Key.LeftAlt; break; case "LEFTALT": keyFound = Key.LeftAlt; break; case "RIGHTALT": keyFound = Key.RightAlt; break; case "SEMICOLON": keyFound = Key.OemSemicolon; break; case "PLUS": keyFound = Key.OemPlus; break; case "COMMA": keyFound = Key.OemComma; break; case "MINUS": keyFound = Key.OemMinus; break; case "PERIOD": keyFound = Key.OemPeriod; break; case "QUESTION": keyFound = Key.OemQuestion; break; case "TILDE": keyFound = Key.OemTilde; break; case "OPENBRACKETS": keyFound = Key.OemOpenBrackets; break; case "PIPE": keyFound = Key.OemPipe; break; case "CLOSEBRACKETS": keyFound = Key.OemCloseBrackets; break; case "QUOTES": keyFound = Key.OemQuotes; break; case "BACKSLASH": keyFound = Key.OemBackslash; break; case "FINISH": keyFound = Key.OemFinish; break; case "ATTN": keyFound = Key.Attn; break; case "CRSEL": keyFound = Key.CrSel; break; case "EXSEL": keyFound = Key.ExSel; break; case "ERASEEOF": keyFound = Key.EraseEof; break; case "PLAY": keyFound = Key.Play; break; case "ZOOM": keyFound = Key.Zoom; break; case "PA1": keyFound = Key.Pa1; break; default: keyFound = (Key)Enum.Parse(typeof(Key), keyToken, true); break; } if ((int)keyFound != -1) { return keyFound; } return null; } } } private static string MatchKey(Key key, CultureInfo culture) { if (key == Key.None) return String.Empty; else { switch (key) { case Key.Back: return "Backspace"; case Key.LineFeed: return "Clear"; case Key.Escape: return "Esc"; } } if ((int)key >= (int)Key.None && (int)key <= (int)Key.DeadCharProcessed) return key.ToString(); else return null; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // // File: KeyConverter.cs // // Description: // // KeyConverter : Converts a key string to the *Type* that the string represents and vice-versa // // Features: // // History: // 05/28/2003 created: Chandrasekhar Rentachintala // // Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // //--------------------------------------------------------------------------- using System; using System.ComponentModel; // for TypeConverter using System.Globalization; // for CultureInfo using System.Reflection; using System.Windows; using System.Windows.Input; using System.Windows.Markup; using System.Security.Permissions; using MS.Utility; namespace System.Windows.Input { /// /// Key Converter class for converting between a string and the Type of a Key /// ///public class KeyConverter : TypeConverter { /// /// CanConvertFrom() /// /// /// ////// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == 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) { // We can convert to a string. // 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) { Key key = (Key)context.Instance; return ((int)key >= (int)Key.None && (int)key <= (int)Key.DeadCharProcessed); } } return false; } ////// ConvertFrom() /// /// /// /// ////// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object source) { if (source is string) { string fullName = ((string)source).Trim(); object key = GetKey(fullName, CultureInfo.InvariantCulture); if (key != null) { return ((Key)key); } else { throw new NotSupportedException(SR.Get(SRID.Unsupported_Key, fullName)); } } throw GetConvertFromException(source); } /// /// ConvertTo() /// /// /// /// /// ////// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) throw new ArgumentNullException("destinationType"); if (destinationType == typeof(string) && value != null) { Key key = (Key)value; if (key == Key.None) { return String.Empty; } if (key >= Key.D0 && key <= Key.D9) { return Char.ToString((char)(int)(key - Key.D0 + '0')); } if (key >= Key.A && key <= Key.Z) { return Char.ToString((char)(int)(key - Key.A + 'A')); } String strKey = MatchKey(key, culture); if (strKey != null && (strKey.Length != 0 || strKey == String.Empty)) { return strKey; } } throw GetConvertToException(value, destinationType); } private object GetKey(string keyToken, CultureInfo culture) { if (keyToken == String.Empty) { return Key.None; } else { keyToken = keyToken.ToUpper(culture); if (keyToken.Length == 1 && Char.IsLetterOrDigit(keyToken[0])) { if (Char.IsDigit(keyToken[0]) && (keyToken[0] >= '0' && keyToken[0] <= '9')) { return ((int)(Key)(Key.D0 + keyToken[0] - '0')); } else if (Char.IsLetter(keyToken[0]) && (keyToken[0] >= 'A' && keyToken[0] <= 'Z')) { return ((int)(Key)(Key.A + keyToken[0] - 'A')); } else { throw new ArgumentException(SR.Get(SRID.CannotConvertStringToType, keyToken, typeof(Key))); } } else { Key keyFound = (Key)(-1); switch (keyToken) { case "ENTER": keyFound = Key.Return; break; case "ESC": keyFound = Key.Escape; break; case "PGUP": keyFound = Key.PageUp; break; case "PGDN": keyFound = Key.PageDown; break; case "PRTSC": keyFound = Key.PrintScreen; break; case "INS": keyFound = Key.Insert; break; case "DEL": keyFound = Key.Delete; break; case "WINDOWS": keyFound = Key.LWin; break; case "WIN": keyFound = Key.LWin; break; case "LEFTWINDOWS": keyFound = Key.LWin; break; case "RIGHTWINDOWS": keyFound = Key.RWin; break; case "APPS": keyFound = Key.Apps; break; case "APPLICATION": keyFound = Key.Apps; break; case "BREAK": keyFound = Key.Cancel; break; case "BACKSPACE": keyFound = Key.Back; break; case "BKSP": keyFound = Key.Back; break; case "BS": keyFound = Key.Back; break; case "SHIFT": keyFound = Key.LeftShift; break; case "LEFTSHIFT": keyFound = Key.LeftShift; break; case "RIGHTSHIFT": keyFound = Key.RightShift; break; case "CONTROL": keyFound = Key.LeftCtrl; break; case "CTRL": keyFound = Key.LeftCtrl; break; case "LEFTCTRL": keyFound = Key.LeftCtrl; break; case "RIGHTCTRL": keyFound = Key.RightCtrl; break; case "ALT": keyFound = Key.LeftAlt; break; case "LEFTALT": keyFound = Key.LeftAlt; break; case "RIGHTALT": keyFound = Key.RightAlt; break; case "SEMICOLON": keyFound = Key.OemSemicolon; break; case "PLUS": keyFound = Key.OemPlus; break; case "COMMA": keyFound = Key.OemComma; break; case "MINUS": keyFound = Key.OemMinus; break; case "PERIOD": keyFound = Key.OemPeriod; break; case "QUESTION": keyFound = Key.OemQuestion; break; case "TILDE": keyFound = Key.OemTilde; break; case "OPENBRACKETS": keyFound = Key.OemOpenBrackets; break; case "PIPE": keyFound = Key.OemPipe; break; case "CLOSEBRACKETS": keyFound = Key.OemCloseBrackets; break; case "QUOTES": keyFound = Key.OemQuotes; break; case "BACKSLASH": keyFound = Key.OemBackslash; break; case "FINISH": keyFound = Key.OemFinish; break; case "ATTN": keyFound = Key.Attn; break; case "CRSEL": keyFound = Key.CrSel; break; case "EXSEL": keyFound = Key.ExSel; break; case "ERASEEOF": keyFound = Key.EraseEof; break; case "PLAY": keyFound = Key.Play; break; case "ZOOM": keyFound = Key.Zoom; break; case "PA1": keyFound = Key.Pa1; break; default: keyFound = (Key)Enum.Parse(typeof(Key), keyToken, true); break; } if ((int)keyFound != -1) { return keyFound; } return null; } } } private static string MatchKey(Key key, CultureInfo culture) { if (key == Key.None) return String.Empty; else { switch (key) { case Key.Back: return "Backspace"; case Key.LineFeed: return "Clear"; case Key.Escape: return "Esc"; } } if ((int)key >= (int)Key.None && (int)key <= (int)Key.DeadCharProcessed) return key.ToString(); else return null; } } } // 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
- PropertyNames.cs
- PersianCalendar.cs
- CalculatedColumn.cs
- Int64KeyFrameCollection.cs
- AutoScrollHelper.cs
- XhtmlBasicTextViewAdapter.cs
- SqlClientWrapperSmiStreamChars.cs
- BuildProviderCollection.cs
- DrawingAttributeSerializer.cs
- BitmapMetadata.cs
- TextTreeInsertElementUndoUnit.cs
- StickyNoteHelper.cs
- ExceptionRoutedEventArgs.cs
- SchemaCollectionCompiler.cs
- SecUtil.cs
- basenumberconverter.cs
- WebRequestModuleElementCollection.cs
- Vector3DConverter.cs
- WasNotInstalledException.cs
- InputProviderSite.cs
- CodeTypeMember.cs
- Transform.cs
- SkinIDTypeConverter.cs
- LocatorPart.cs
- SoapSchemaImporter.cs
- TextElementEnumerator.cs
- TypeContext.cs
- ContainerVisual.cs
- BinHexDecoder.cs
- WorkerRequest.cs
- LogicalExpr.cs
- AuthenticationModulesSection.cs
- LinqDataSourceContextEventArgs.cs
- EnvironmentPermission.cs
- HttpServerUtilityBase.cs
- UdpTransportBindingElement.cs
- X509Certificate2.cs
- ImageMapEventArgs.cs
- AffineTransform3D.cs
- AttributeParameterInfo.cs
- PropertyTab.cs
- CaseInsensitiveHashCodeProvider.cs
- Pair.cs
- GeneralTransform3D.cs
- WindowsSecurityTokenAuthenticator.cs
- StringDictionary.cs
- InstancePersistenceException.cs
- GetPageNumberCompletedEventArgs.cs
- TraceUtility.cs
- PeerNearMe.cs
- MarkupExtensionParser.cs
- WpfWebRequestHelper.cs
- GenericTransactionFlowAttribute.cs
- EastAsianLunisolarCalendar.cs
- WebConfigurationHostFileChange.cs
- VSWCFServiceContractGenerator.cs
- HtmlTextArea.cs
- BaseParaClient.cs
- UIElementPropertyUndoUnit.cs
- KeyNotFoundException.cs
- InvalidCommandTreeException.cs
- FieldInfo.cs
- HtmlForm.cs
- OpenTypeLayoutCache.cs
- XPathBuilder.cs
- DesignerObject.cs
- TextRunProperties.cs
- MenuEventArgs.cs
- TextRunCache.cs
- Transform3DGroup.cs
- ObjectListCommandEventArgs.cs
- RepeaterItemCollection.cs
- DataGridRelationshipRow.cs
- TrustLevel.cs
- Win32MouseDevice.cs
- DetailsViewPageEventArgs.cs
- ResumeStoryboard.cs
- StrongNameMembershipCondition.cs
- _ProxyRegBlob.cs
- ReflectTypeDescriptionProvider.cs
- GridViewUpdateEventArgs.cs
- KerberosRequestorSecurityTokenAuthenticator.cs
- FillBehavior.cs
- SectionVisual.cs
- ListBindableAttribute.cs
- TextContainerHelper.cs
- DetailsViewUpdatedEventArgs.cs
- AttributeEmitter.cs
- DataViewSettingCollection.cs
- X509CertificateValidator.cs
- BinaryConverter.cs
- PropertyOverridesDialog.cs
- DeviceContext2.cs
- JavaScriptSerializer.cs
- PictureBox.cs
- PackageProperties.cs
- IndentTextWriter.cs
- ChildTable.cs
- SplitterEvent.cs
- XmlAtomicValue.cs