Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Documents / TextTreeExtractElementUndoUnit.cs / 1305600 / TextTreeExtractElementUndoUnit.cs
//---------------------------------------------------------------------------- // // File: TextTreeExtractElementUndoUnit.cs // // Description: Undo unit for TextContainer.ExtractElement calls. // // History: // 03/03/2004 : [....] - Created // //--------------------------------------------------------------------------- using System; using MS.Internal; namespace System.Windows.Documents { // Undo unit for TextContainer.ExtractElement calls. internal class TextTreeExtractElementUndoUnit : TextTreeUndoUnit { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors // Creates a new undo unit instance. internal TextTreeExtractElementUndoUnit(TextContainer tree, TextTreeTextElementNode elementNode) : base(tree, elementNode.GetSymbolOffset(tree.Generation)) { _symbolCount = elementNode.SymbolCount; _type = elementNode.TextElement.GetType(); _localValues = GetPropertyRecordArray(elementNode.TextElement); _resources = elementNode.TextElement.Resources; // Table requires additional work for storing its Columns collection if (elementNode.TextElement is Table) { _columns = TextTreeDeleteContentUndoUnit.SaveColumns((Table)elementNode.TextElement); } } #endregion Constructors //------------------------------------------------------ // // Public Methods // //----------------------------------------------------- #region Public Methods // Called by the undo manager. Restores tree state to its condition // when the unit was created. Assumes the tree state matches conditions // just after the unit was created. public override void DoCore() { TextPointer start; TextPointer end; TextElement element; VerifyTreeContentHashCode(); start = new TextPointer(this.TextContainer, this.SymbolOffset, LogicalDirection.Forward); end = new TextPointer(this.TextContainer, this.SymbolOffset + _symbolCount - 2, LogicalDirection.Forward); // Insert a new element. element = (TextElement)Activator.CreateInstance(_type); element.Reposition(start, end); // Restore local resources element.Resources = _resources; // Move end into the scope of the new element. end.MoveToNextContextPosition(LogicalDirection.Backward); // Then restore local property values. // this.TextContainer.SetValues(end, ArrayToLocalValueEnumerator(_localValues)); if (element is Table) { TextTreeDeleteContentUndoUnit.RestoreColumns((Table)element, _columns); } } #endregion Public Methods //------------------------------------------------------ // // Private Fields // //------------------------------------------------------ #region Private Fields // Count of symbols covered by the extracted TextElement, including its 2 edges. private readonly int _symbolCount; // Type of the extracted TextElement. private readonly Type _type; // Collection of all local property values set on the extracted TextElement. private readonly PropertyRecord []_localValues; // Resources defined locally on the TextElement private readonly ResourceDictionary _resources; // TableColumns collection private readonly TableColumn[] _columns; #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // // File: TextTreeExtractElementUndoUnit.cs // // Description: Undo unit for TextContainer.ExtractElement calls. // // History: // 03/03/2004 : [....] - Created // //--------------------------------------------------------------------------- using System; using MS.Internal; namespace System.Windows.Documents { // Undo unit for TextContainer.ExtractElement calls. internal class TextTreeExtractElementUndoUnit : TextTreeUndoUnit { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors // Creates a new undo unit instance. internal TextTreeExtractElementUndoUnit(TextContainer tree, TextTreeTextElementNode elementNode) : base(tree, elementNode.GetSymbolOffset(tree.Generation)) { _symbolCount = elementNode.SymbolCount; _type = elementNode.TextElement.GetType(); _localValues = GetPropertyRecordArray(elementNode.TextElement); _resources = elementNode.TextElement.Resources; // Table requires additional work for storing its Columns collection if (elementNode.TextElement is Table) { _columns = TextTreeDeleteContentUndoUnit.SaveColumns((Table)elementNode.TextElement); } } #endregion Constructors //------------------------------------------------------ // // Public Methods // //----------------------------------------------------- #region Public Methods // Called by the undo manager. Restores tree state to its condition // when the unit was created. Assumes the tree state matches conditions // just after the unit was created. public override void DoCore() { TextPointer start; TextPointer end; TextElement element; VerifyTreeContentHashCode(); start = new TextPointer(this.TextContainer, this.SymbolOffset, LogicalDirection.Forward); end = new TextPointer(this.TextContainer, this.SymbolOffset + _symbolCount - 2, LogicalDirection.Forward); // Insert a new element. element = (TextElement)Activator.CreateInstance(_type); element.Reposition(start, end); // Restore local resources element.Resources = _resources; // Move end into the scope of the new element. end.MoveToNextContextPosition(LogicalDirection.Backward); // Then restore local property values. // this.TextContainer.SetValues(end, ArrayToLocalValueEnumerator(_localValues)); if (element is Table) { TextTreeDeleteContentUndoUnit.RestoreColumns((Table)element, _columns); } } #endregion Public Methods //------------------------------------------------------ // // Private Fields // //------------------------------------------------------ #region Private Fields // Count of symbols covered by the extracted TextElement, including its 2 edges. private readonly int _symbolCount; // Type of the extracted TextElement. private readonly Type _type; // Collection of all local property values set on the extracted TextElement. private readonly PropertyRecord []_localValues; // Resources defined locally on the TextElement private readonly ResourceDictionary _resources; // TableColumns collection private readonly TableColumn[] _columns; #endregion Private Fields } } // 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
- FrameworkReadOnlyPropertyMetadata.cs
- SecureUICommand.cs
- SqlVersion.cs
- cryptoapiTransform.cs
- SqlDataRecord.cs
- odbcmetadatafactory.cs
- StateManagedCollection.cs
- ZipIOLocalFileBlock.cs
- Marshal.cs
- ColumnResult.cs
- HtmlWindow.cs
- ChangePassword.cs
- ParameterElement.cs
- XmlSchemaInferenceException.cs
- WebBrowser.cs
- EncoderBestFitFallback.cs
- EventSinkHelperWriter.cs
- XComponentModel.cs
- DesignerTransactionCloseEvent.cs
- TextElementEditingBehaviorAttribute.cs
- DataComponentMethodGenerator.cs
- WinFormsComponentEditor.cs
- DataKey.cs
- LinqDataSourceContextEventArgs.cs
- LineVisual.cs
- TriggerActionCollection.cs
- SessionStateModule.cs
- Send.cs
- ServiceNameElement.cs
- ComEventsInfo.cs
- XamlWrapperReaders.cs
- BinarySerializer.cs
- IImplicitResourceProvider.cs
- EntityCommand.cs
- TransformerInfoCollection.cs
- Registry.cs
- LookupTables.cs
- RenderContext.cs
- XamlSerializerUtil.cs
- Operand.cs
- SqlTypesSchemaImporter.cs
- SqlVisitor.cs
- dsa.cs
- ListBoxItemWrapperAutomationPeer.cs
- UnsafeNativeMethods.cs
- TransactionContextManager.cs
- HtmlTableCell.cs
- RegistryDataKey.cs
- Overlapped.cs
- EntityDataSourceWizardForm.cs
- WorkflowInstanceRecord.cs
- XhtmlBasicValidatorAdapter.cs
- ButtonBase.cs
- FixedMaxHeap.cs
- LineVisual.cs
- AdapterSwitches.cs
- PathFigure.cs
- ValueTypePropertyReference.cs
- FunctionCommandText.cs
- PipeStream.cs
- BufferBuilder.cs
- PixelShader.cs
- CorrelationTokenInvalidatedHandler.cs
- ToolboxDataAttribute.cs
- XmlSignatureManifest.cs
- TabItemWrapperAutomationPeer.cs
- WebPartDisplayMode.cs
- XmlSchemaAttributeGroup.cs
- ProcessManager.cs
- ProcessModule.cs
- ServiceModelConfiguration.cs
- AttachInfo.cs
- TabControlEvent.cs
- AnnotationResource.cs
- BitmapEffectvisualstate.cs
- GuidConverter.cs
- MaskedTextProvider.cs
- XmlSchemaDocumentation.cs
- Table.cs
- CodeBlockBuilder.cs
- StaticSiteMapProvider.cs
- SharedUtils.cs
- RegexMatchCollection.cs
- FixedTextBuilder.cs
- AppManager.cs
- InkPresenterAutomationPeer.cs
- DataTemplateSelector.cs
- TemplateBuilder.cs
- Metadata.cs
- Catch.cs
- EntityTransaction.cs
- CodeDirectoryCompiler.cs
- ToolStripItemImageRenderEventArgs.cs
- MarkupObject.cs
- SudsWriter.cs
- WorkflowEventArgs.cs
- SoundPlayer.cs
- PagerSettings.cs
- Padding.cs
- ProxyElement.cs