Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Framework / System / Windows / Documents / TextServicesPropertyRanges.cs / 1 / TextServicesPropertyRanges.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: TextServicesPropertyRanges.cs // // History: // 08/01/2003 : yutakas - Ported from dotnet tree. // //--------------------------------------------------------------------------- using System; using System.Runtime.InteropServices; using System.Windows.Threading; using System.Security; using System.Security.Permissions; using System.Collections; using System.Diagnostics; using System.Windows.Media; using System.Windows.Input; using System.Windows.Documents; using MS.Win32; namespace System.Windows.Documents { //----------------------------------------------------- // // TextServicesPropertyRanges class // //----------------------------------------------------- ////// The base class for property ranges of EditRecord /// internal class TextServicesPropertyRanges { //------------------------------------------------------ // // Constructors // //----------------------------------------------------- internal TextServicesPropertyRanges( TextStore textstore, Guid guid) { _guid = guid; _textstore = textstore; } //------------------------------------------------------ // // Internal Method // //------------------------------------------------------ ////// OnRange virtual method. /// internal virtual void OnRange(UnsafeNativeMethods.ITfProperty property, int ecReadonly, UnsafeNativeMethods.ITfRange range) { } ////// Calback function for TextEditSink /// we track the property change here. /// ////// Critical - calls unmanaged code, commits raw input to the system /// [SecurityCritical] internal virtual void OnEndEdit(UnsafeNativeMethods.ITfContext context, int ecReadOnly, UnsafeNativeMethods.ITfEditRecord editRecord) { int fetched; UnsafeNativeMethods.IEnumTfRanges ranges; UnsafeNativeMethods.ITfProperty prop = null; ranges = GetPropertyUpdate(editRecord); UnsafeNativeMethods.ITfRange [] outRanges; outRanges = new UnsafeNativeMethods.ITfRange[1]; while (ranges.Next(1, outRanges, out fetched) == 0) { // // check the element has enabled dynamic property. // ITextPointer start; ITextPointer end; ConvertToTextPosition(outRanges[0], out start, out end); if (prop == null) context.GetProperty(ref _guid, out prop); UnsafeNativeMethods.IEnumTfRanges rangesProp; if (prop.EnumRanges(ecReadOnly, out rangesProp, outRanges[0]) == 0) { UnsafeNativeMethods.ITfRange [] outRangesProp; outRangesProp = new UnsafeNativeMethods.ITfRange[1]; while (rangesProp.Next(1, outRangesProp, out fetched) == 0) { OnRange(prop, ecReadOnly, outRangesProp[0]); Marshal.ReleaseComObject(outRangesProp[0]); } Marshal.ReleaseComObject(rangesProp); } Marshal.ReleaseComObject(outRanges[0]); } Marshal.ReleaseComObject(ranges); if (prop != null) Marshal.ReleaseComObject(prop); } //----------------------------------------------------- // // Protected Method // //------------------------------------------------------ ////// Convert ITfRange to two TextPositions. /// ////// Critical - calls unmanaged code (GetExtent) /// [SecurityCritical] protected void ConvertToTextPosition(UnsafeNativeMethods.ITfRange range, out ITextPointer start, out ITextPointer end) { UnsafeNativeMethods.ITfRangeACP rangeACP; int startIndex; int length; rangeACP = range as UnsafeNativeMethods.ITfRangeACP; rangeACP.GetExtent(out startIndex, out length); if (length < 0) { // Cicero bug! Length should never be less than zero. start = null; end = null; } else { start = _textstore.CreatePointerAtCharOffset(startIndex, LogicalDirection.Forward); end = _textstore.CreatePointerAtCharOffset(startIndex + length, LogicalDirection.Forward); } } ////// Get Cicero property value. /// ////// Critical - calls unmanaged code (GetValue) and expose the returned object directly. /// It could be any variant in a Cicero property in general. /// non Avalon derived class is blocked by link demand /// [UIPermissionAttribute(SecurityAction.LinkDemand, Unrestricted= true)] [SecurityCritical] protected static Object GetValue(int ecReadOnly, UnsafeNativeMethods.ITfProperty property, UnsafeNativeMethods.ITfRange range) { if (property == null) return null; Object obj; property.GetValue(ecReadOnly, range, out obj); return obj; } ////// Get ranges that the property is changed. /// ////// Critical - unsafe block to manipulate a pointer of a pointer to GUID. /// [SecurityCritical] private UnsafeNativeMethods.IEnumTfRanges GetPropertyUpdate( UnsafeNativeMethods.ITfEditRecord editRecord) { UnsafeNativeMethods.IEnumTfRanges ranges; unsafe { fixed (Guid *pguid = &_guid) { // // IntPtr p = (IntPtr)pguid; editRecord.GetTextAndPropertyUpdates(0, ref p, 1, out ranges); } } return ranges; } //----------------------------------------------------- // // Protected Properties // //----------------------------------------------------- ////// GUID of ITfProperty /// protected Guid Guid { get { return _guid; } } ////// Return TextStore that is associated to this property. /// protected TextStore TextStore { get { return _textstore; } } //----------------------------------------------------- // // Private Field // //------------------------------------------------------ // GUID of ITfProperty private Guid _guid; // The refrence of TextStore. private TextStore _textstore; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: TextServicesPropertyRanges.cs // // History: // 08/01/2003 : yutakas - Ported from dotnet tree. // //--------------------------------------------------------------------------- using System; using System.Runtime.InteropServices; using System.Windows.Threading; using System.Security; using System.Security.Permissions; using System.Collections; using System.Diagnostics; using System.Windows.Media; using System.Windows.Input; using System.Windows.Documents; using MS.Win32; namespace System.Windows.Documents { //----------------------------------------------------- // // TextServicesPropertyRanges class // //----------------------------------------------------- ////// The base class for property ranges of EditRecord /// internal class TextServicesPropertyRanges { //------------------------------------------------------ // // Constructors // //----------------------------------------------------- internal TextServicesPropertyRanges( TextStore textstore, Guid guid) { _guid = guid; _textstore = textstore; } //------------------------------------------------------ // // Internal Method // //------------------------------------------------------ ////// OnRange virtual method. /// internal virtual void OnRange(UnsafeNativeMethods.ITfProperty property, int ecReadonly, UnsafeNativeMethods.ITfRange range) { } ////// Calback function for TextEditSink /// we track the property change here. /// ////// Critical - calls unmanaged code, commits raw input to the system /// [SecurityCritical] internal virtual void OnEndEdit(UnsafeNativeMethods.ITfContext context, int ecReadOnly, UnsafeNativeMethods.ITfEditRecord editRecord) { int fetched; UnsafeNativeMethods.IEnumTfRanges ranges; UnsafeNativeMethods.ITfProperty prop = null; ranges = GetPropertyUpdate(editRecord); UnsafeNativeMethods.ITfRange [] outRanges; outRanges = new UnsafeNativeMethods.ITfRange[1]; while (ranges.Next(1, outRanges, out fetched) == 0) { // // check the element has enabled dynamic property. // ITextPointer start; ITextPointer end; ConvertToTextPosition(outRanges[0], out start, out end); if (prop == null) context.GetProperty(ref _guid, out prop); UnsafeNativeMethods.IEnumTfRanges rangesProp; if (prop.EnumRanges(ecReadOnly, out rangesProp, outRanges[0]) == 0) { UnsafeNativeMethods.ITfRange [] outRangesProp; outRangesProp = new UnsafeNativeMethods.ITfRange[1]; while (rangesProp.Next(1, outRangesProp, out fetched) == 0) { OnRange(prop, ecReadOnly, outRangesProp[0]); Marshal.ReleaseComObject(outRangesProp[0]); } Marshal.ReleaseComObject(rangesProp); } Marshal.ReleaseComObject(outRanges[0]); } Marshal.ReleaseComObject(ranges); if (prop != null) Marshal.ReleaseComObject(prop); } //----------------------------------------------------- // // Protected Method // //------------------------------------------------------ ////// Convert ITfRange to two TextPositions. /// ////// Critical - calls unmanaged code (GetExtent) /// [SecurityCritical] protected void ConvertToTextPosition(UnsafeNativeMethods.ITfRange range, out ITextPointer start, out ITextPointer end) { UnsafeNativeMethods.ITfRangeACP rangeACP; int startIndex; int length; rangeACP = range as UnsafeNativeMethods.ITfRangeACP; rangeACP.GetExtent(out startIndex, out length); if (length < 0) { // Cicero bug! Length should never be less than zero. start = null; end = null; } else { start = _textstore.CreatePointerAtCharOffset(startIndex, LogicalDirection.Forward); end = _textstore.CreatePointerAtCharOffset(startIndex + length, LogicalDirection.Forward); } } ////// Get Cicero property value. /// ////// Critical - calls unmanaged code (GetValue) and expose the returned object directly. /// It could be any variant in a Cicero property in general. /// non Avalon derived class is blocked by link demand /// [UIPermissionAttribute(SecurityAction.LinkDemand, Unrestricted= true)] [SecurityCritical] protected static Object GetValue(int ecReadOnly, UnsafeNativeMethods.ITfProperty property, UnsafeNativeMethods.ITfRange range) { if (property == null) return null; Object obj; property.GetValue(ecReadOnly, range, out obj); return obj; } ////// Get ranges that the property is changed. /// ////// Critical - unsafe block to manipulate a pointer of a pointer to GUID. /// [SecurityCritical] private UnsafeNativeMethods.IEnumTfRanges GetPropertyUpdate( UnsafeNativeMethods.ITfEditRecord editRecord) { UnsafeNativeMethods.IEnumTfRanges ranges; unsafe { fixed (Guid *pguid = &_guid) { // // IntPtr p = (IntPtr)pguid; editRecord.GetTextAndPropertyUpdates(0, ref p, 1, out ranges); } } return ranges; } //----------------------------------------------------- // // Protected Properties // //----------------------------------------------------- ////// GUID of ITfProperty /// protected Guid Guid { get { return _guid; } } ////// Return TextStore that is associated to this property. /// protected TextStore TextStore { get { return _textstore; } } //----------------------------------------------------- // // Private Field // //------------------------------------------------------ // GUID of ITfProperty private Guid _guid; // The refrence of TextStore. private TextStore _textstore; } } // 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
- Mutex.cs
- ColorComboBox.cs
- NavigatingCancelEventArgs.cs
- ItemChangedEventArgs.cs
- KeyValueSerializer.cs
- HttpRawResponse.cs
- View.cs
- TraceLog.cs
- PageContent.cs
- ObservableCollection.cs
- AdapterUtil.cs
- GacUtil.cs
- UnsafeNativeMethodsCLR.cs
- ExceptionTrace.cs
- AdornerPresentationContext.cs
- Visual3D.cs
- FlowLayoutPanelDesigner.cs
- SamlSubject.cs
- FlagsAttribute.cs
- ParamArrayAttribute.cs
- Environment.cs
- XamlVector3DCollectionSerializer.cs
- MediaEntryAttribute.cs
- TableLayoutPanelCodeDomSerializer.cs
- ExpressionVisitor.cs
- ExpressionDumper.cs
- PartialTrustVisibleAssembliesSection.cs
- EventHandlers.cs
- EntitySqlQueryCacheKey.cs
- AssemblyBuilder.cs
- RunInstallerAttribute.cs
- MethodSet.cs
- HostingEnvironmentSection.cs
- StringSource.cs
- Point3DIndependentAnimationStorage.cs
- CommunicationObjectManager.cs
- BitmapVisualManager.cs
- MemoryRecordBuffer.cs
- ServiceBehaviorElement.cs
- ListViewSelectEventArgs.cs
- PropertyChangedEventArgs.cs
- Point3DAnimationBase.cs
- BaseCollection.cs
- DataRowView.cs
- GPRECT.cs
- TextServicesDisplayAttributePropertyRanges.cs
- EllipseGeometry.cs
- validation.cs
- ToolStripSplitStackLayout.cs
- StorageComplexPropertyMapping.cs
- MessageFault.cs
- CssClassPropertyAttribute.cs
- StringTraceRecord.cs
- ChangeToolStripParentVerb.cs
- SemanticAnalyzer.cs
- TypeDefinition.cs
- XmlSchemaSimpleContentRestriction.cs
- PropertyDescriptorCollection.cs
- GridViewRowCollection.cs
- GuidelineCollection.cs
- TextReturnReader.cs
- X509Certificate.cs
- XmlHelper.cs
- ExtendedProperty.cs
- MethodImplAttribute.cs
- ObjectAssociationEndMapping.cs
- WebPageTraceListener.cs
- TypeListConverter.cs
- References.cs
- MouseGestureConverter.cs
- Action.cs
- Listbox.cs
- BufferAllocator.cs
- PersianCalendar.cs
- BitmapFrameEncode.cs
- PrimitiveXmlSerializers.cs
- SoapWriter.cs
- TagPrefixAttribute.cs
- DateRangeEvent.cs
- JsonSerializer.cs
- MenuItemCollection.cs
- TimeSpanStorage.cs
- Tag.cs
- COM2AboutBoxPropertyDescriptor.cs
- XmlCharCheckingWriter.cs
- CustomAttribute.cs
- InvalidCommandTreeException.cs
- AspCompat.cs
- HttpPostLocalhostServerProtocol.cs
- InputLanguageEventArgs.cs
- GraphicsContainer.cs
- SegmentInfo.cs
- DataGridItemCollection.cs
- FloaterBaseParagraph.cs
- InstanceHandleReference.cs
- BindingValueChangedEventArgs.cs
- SendingRequestEventArgs.cs
- Page.cs
- DbCommandTree.cs
- validationstate.cs