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 / TextTreeExtractElementUndoUnit.cs / 1 / TextTreeExtractElementUndoUnit.cs
//---------------------------------------------------------------------------- // // File: TextTreeExtractElementUndoUnit.cs // // Description: Undo unit for TextContainer.ExtractElement calls. // // History: // 03/03/2004 : benwest - 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 = LocalValueEnumeratorToArray(elementNode.TextElement.GetLocalValueEnumerator()); _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 : benwest - 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 = LocalValueEnumeratorToArray(elementNode.TextElement.GetLocalValueEnumerator()); _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
- DataControlFieldCell.cs
- AdornerLayer.cs
- OciEnlistContext.cs
- DataTransferEventArgs.cs
- ToolStripGripRenderEventArgs.cs
- InheritanceContextHelper.cs
- RuleSetCollection.cs
- SqlCachedBuffer.cs
- LocalizableAttribute.cs
- DocumentViewerAutomationPeer.cs
- InstanceStoreQueryResult.cs
- ListenerSingletonConnectionReader.cs
- DirectionalLight.cs
- HtmlGenericControl.cs
- NetCodeGroup.cs
- GridViewCommandEventArgs.cs
- ErrorActivity.cs
- ErrorTableItemStyle.cs
- ArglessEventHandlerProxy.cs
- AssociationSet.cs
- MetadataCache.cs
- Point.cs
- InfoCardSymmetricCrypto.cs
- AssemblyFilter.cs
- RemotingException.cs
- _SSPISessionCache.cs
- AutomationEventArgs.cs
- XmlNavigatorFilter.cs
- ProgressBarAutomationPeer.cs
- assemblycache.cs
- DataListItem.cs
- CodeDomLoader.cs
- CompilerScope.Storage.cs
- HwndSourceKeyboardInputSite.cs
- DomNameTable.cs
- controlskin.cs
- Attribute.cs
- ContainerControl.cs
- BitmapEffectGroup.cs
- InvokePatternIdentifiers.cs
- DataGridItemEventArgs.cs
- ValidationEventArgs.cs
- LabelTarget.cs
- TemplateBindingExpression.cs
- Dynamic.cs
- ThreadExceptionEvent.cs
- CodeExporter.cs
- __ConsoleStream.cs
- TextBox.cs
- WarningException.cs
- LongValidatorAttribute.cs
- BuildProviderCollection.cs
- TransformerInfo.cs
- HttpDebugHandler.cs
- CustomActivityDesigner.cs
- TextBoxBase.cs
- TextBoxAutomationPeer.cs
- DataGridViewSelectedCellCollection.cs
- ListControl.cs
- HtmlAnchor.cs
- DateTimeConverter.cs
- ThrowHelper.cs
- ChtmlMobileTextWriter.cs
- SafeMILHandle.cs
- TextTreeDeleteContentUndoUnit.cs
- SoapIncludeAttribute.cs
- DoWorkEventArgs.cs
- Application.cs
- ProgressiveCrcCalculatingStream.cs
- SrgsRulesCollection.cs
- EmptyControlCollection.cs
- ContainerSelectorActiveEvent.cs
- ProcessHost.cs
- AlternateViewCollection.cs
- MethodRental.cs
- DesignerLabelAdapter.cs
- TaiwanLunisolarCalendar.cs
- MetadataArtifactLoaderFile.cs
- HMACSHA1.cs
- DataControlFieldHeaderCell.cs
- XmlSchemaObjectCollection.cs
- RedistVersionInfo.cs
- LifetimeServices.cs
- PlacementWorkspace.cs
- CompilerParameters.cs
- LogWriteRestartAreaState.cs
- FixedFindEngine.cs
- ListViewTableCell.cs
- AsymmetricAlgorithm.cs
- EdmComplexTypeAttribute.cs
- TextContainerChangeEventArgs.cs
- DataRelationCollection.cs
- JoinCqlBlock.cs
- DateTimeUtil.cs
- Guid.cs
- AbstractExpressions.cs
- BaseHashHelper.cs
- TypedDataSetSchemaImporterExtension.cs
- SoapObjectReader.cs
- SimpleType.cs