Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Framework / System / Windows / Documents / TextTreeTextElementNode.cs / 1 / TextTreeTextElementNode.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: A TextContainer node representing a TextElement. // // History: // 02/18/2004 : benwest - Created // //--------------------------------------------------------------------------- using System; using MS.Internal; namespace System.Windows.Documents { // Each TextElement inserted though a public API is represented internally // by a TextTreeTextElementNode. // // TextTreeTextElementNodes may contain trees of child nodes, nodes in // a contained tree are scoped by the element node. internal class TextTreeTextElementNode : TextTreeNode { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors // Creates a new instance. internal TextTreeTextElementNode() { _symbolOffsetCache = -1; } #endregion Constructors //------------------------------------------------------ // // Public Methods // //----------------------------------------------------- #region Public Methods #if DEBUG // Debug-only ToString override. public override string ToString() { return ("TextElementNode Id=" + this.DebugId + " SymbolCount=" + _symbolCount); } #endif // DEBUG #endregion Public Methods //------------------------------------------------------ // // Internal Methods // //------------------------------------------------------ #region Internal Methods // Returns a shallow copy of this node. internal override TextTreeNode Clone() { TextTreeTextElementNode clone; clone = new TextTreeTextElementNode(); clone._symbolCount = _symbolCount; clone._imeCharCount = _imeCharCount; clone._textElement = _textElement; return clone; } // Returns the TextPointerContext of the node. // Returns ElementStart if direction == Forward, otherwise ElementEnd // if direction == Backward. internal override TextPointerContext GetPointerContext(LogicalDirection direction) { return (direction == LogicalDirection.Forward) ? TextPointerContext.ElementStart : TextPointerContext.ElementEnd; } #endregion Internal methods //----------------------------------------------------- // // Internal Properties // //------------------------------------------------------ #region Internal Properties // If this node is a local root, then ParentNode contains it. // Otherwise, this is the node parenting this node within its tree. internal override SplayTreeNode ParentNode { get { return _parentNode; } set { _parentNode = (TextTreeNode)value; } } // Root node of a contained tree, if any. internal override SplayTreeNode ContainedNode { get { return _containedNode; } set { _containedNode = (TextTreeNode)value; } } // Count of symbols of all siblings preceding this node. internal override int LeftSymbolCount { get { return _leftSymbolCount; } set { _leftSymbolCount = value; } } // Count of chars of all siblings preceding this node. internal override int LeftCharCount { get { return _leftCharCount; } set { _leftCharCount = value; } } // Left child node in a sibling tree. internal override SplayTreeNode LeftChildNode { get { return _leftChildNode; } set { _leftChildNode = (TextTreeNode)value; } } // Right child node in a sibling tree. internal override SplayTreeNode RightChildNode { get { return _rightChildNode; } set { _rightChildNode = (TextTreeNode)value; } } // The TextContainer's generation when SymbolOffsetCache was last updated. // If the current generation doesn't match TextContainer.Generation, then // SymbolOffsetCache is invalid. internal override uint Generation { get { return _generation; } set { _generation = value; } } // Cached symbol offset. internal override int SymbolOffsetCache { get { return _symbolOffsetCache; } set { _symbolOffsetCache = value; } } // Count of symbols covered by this node and any contained nodes. // Includes two symbols for this node's start/end edges. internal override int SymbolCount { get { return _symbolCount; } set { _symbolCount = value; } } // Count of chars covered by this node and any contained nodes. internal override int IMECharCount { get { return _imeCharCount; } set { _imeCharCount = value; } } // Count of TextPositions referencing the node's BeforeStart edge. // Since nodes don't usually have any references, we demand allocate // storage when needed. internal override bool BeforeStartReferenceCount { get { return (_edgeReferenceCounts & ElementEdge.BeforeStart) != 0; } set { Invariant.Assert(value); // Illegal to clear a set ref count. _edgeReferenceCounts |= ElementEdge.BeforeStart; } } // Count of TextPositions referencing the node's AfterStart edge. // Since nodes don't usually have any references, we demand allocate // storage when needed. internal override bool AfterStartReferenceCount { get { return (_edgeReferenceCounts & ElementEdge.AfterStart) != 0; } set { Invariant.Assert(value); // Illegal to clear a set ref count. _edgeReferenceCounts |= ElementEdge.AfterStart; } } // Count of TextPositions referencing the node's BeforeEnd edge. // Since nodes don't usually have any references, we demand allocate // storage when needed. internal override bool BeforeEndReferenceCount { get { return (_edgeReferenceCounts & ElementEdge.BeforeEnd) != 0; } set { Invariant.Assert(value); // Illegal to clear a set ref count. _edgeReferenceCounts |= ElementEdge.BeforeEnd; } } // Count of TextPositions referencing the node's AfterEnd edge. // Since nodes don't usually have any references, we demand allocate // storage when needed. internal override bool AfterEndReferenceCount { get { return (_edgeReferenceCounts & ElementEdge.AfterEnd) != 0; } set { Invariant.Assert(value); // Illegal to clear a set ref count. _edgeReferenceCounts |= ElementEdge.AfterEnd; } } // The TextElement associated with this node. internal TextElement TextElement { get { return _textElement; } set { _textElement = value; } } // Plain text character count of this element's start edge. // This property depends on the current location of the node! internal int IMELeftEdgeCharCount { get { return (_textElement == null) ? -1 : _textElement.IMELeftEdgeCharCount; } } // Returns true if this node is the leftmost sibling of its parent. internal bool IsFirstSibling { get { Splay(); return (_leftChildNode == null); } } #endregion Internal Properties //----------------------------------------------------- // // Private Fields // //----------------------------------------------------- #region Private Fields // Count of symbols of all siblings preceding this node. private int _leftSymbolCount; // Count of chars of all siblings preceding this node. private int _leftCharCount; // If this node is a local root, then ParentNode contains it. // Otherwise, this is the node parenting this node within its tree. private TextTreeNode _parentNode; // Left child node in a sibling tree. private TextTreeNode _leftChildNode; // Right child node in a sibling tree. private TextTreeNode _rightChildNode; // Root node of a contained tree, if any. private TextTreeNode _containedNode; // The TextContainer's generation when SymbolOffsetCache was last updated. // If the current generation doesn't match TextContainer.Generation, then // SymbolOffsetCache is invalid. private uint _generation; // Cached symbol offset. private int _symbolOffsetCache; // Count of symbols covered by this node and any contained nodes. // Includes two symbols for this node's start/end edges. private int _symbolCount; // Count of chars covered by this node and any contained nodes. private int _imeCharCount; // The TextElement associated with this node. private TextElement _textElement; // Reference counts of TextPositions referencing this node. // Lazy allocated -- null means no references. private ElementEdge _edgeReferenceCounts; #endregion Private Fields } } // 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: A TextContainer node representing a TextElement. // // History: // 02/18/2004 : benwest - Created // //--------------------------------------------------------------------------- using System; using MS.Internal; namespace System.Windows.Documents { // Each TextElement inserted though a public API is represented internally // by a TextTreeTextElementNode. // // TextTreeTextElementNodes may contain trees of child nodes, nodes in // a contained tree are scoped by the element node. internal class TextTreeTextElementNode : TextTreeNode { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors // Creates a new instance. internal TextTreeTextElementNode() { _symbolOffsetCache = -1; } #endregion Constructors //------------------------------------------------------ // // Public Methods // //----------------------------------------------------- #region Public Methods #if DEBUG // Debug-only ToString override. public override string ToString() { return ("TextElementNode Id=" + this.DebugId + " SymbolCount=" + _symbolCount); } #endif // DEBUG #endregion Public Methods //------------------------------------------------------ // // Internal Methods // //------------------------------------------------------ #region Internal Methods // Returns a shallow copy of this node. internal override TextTreeNode Clone() { TextTreeTextElementNode clone; clone = new TextTreeTextElementNode(); clone._symbolCount = _symbolCount; clone._imeCharCount = _imeCharCount; clone._textElement = _textElement; return clone; } // Returns the TextPointerContext of the node. // Returns ElementStart if direction == Forward, otherwise ElementEnd // if direction == Backward. internal override TextPointerContext GetPointerContext(LogicalDirection direction) { return (direction == LogicalDirection.Forward) ? TextPointerContext.ElementStart : TextPointerContext.ElementEnd; } #endregion Internal methods //----------------------------------------------------- // // Internal Properties // //------------------------------------------------------ #region Internal Properties // If this node is a local root, then ParentNode contains it. // Otherwise, this is the node parenting this node within its tree. internal override SplayTreeNode ParentNode { get { return _parentNode; } set { _parentNode = (TextTreeNode)value; } } // Root node of a contained tree, if any. internal override SplayTreeNode ContainedNode { get { return _containedNode; } set { _containedNode = (TextTreeNode)value; } } // Count of symbols of all siblings preceding this node. internal override int LeftSymbolCount { get { return _leftSymbolCount; } set { _leftSymbolCount = value; } } // Count of chars of all siblings preceding this node. internal override int LeftCharCount { get { return _leftCharCount; } set { _leftCharCount = value; } } // Left child node in a sibling tree. internal override SplayTreeNode LeftChildNode { get { return _leftChildNode; } set { _leftChildNode = (TextTreeNode)value; } } // Right child node in a sibling tree. internal override SplayTreeNode RightChildNode { get { return _rightChildNode; } set { _rightChildNode = (TextTreeNode)value; } } // The TextContainer's generation when SymbolOffsetCache was last updated. // If the current generation doesn't match TextContainer.Generation, then // SymbolOffsetCache is invalid. internal override uint Generation { get { return _generation; } set { _generation = value; } } // Cached symbol offset. internal override int SymbolOffsetCache { get { return _symbolOffsetCache; } set { _symbolOffsetCache = value; } } // Count of symbols covered by this node and any contained nodes. // Includes two symbols for this node's start/end edges. internal override int SymbolCount { get { return _symbolCount; } set { _symbolCount = value; } } // Count of chars covered by this node and any contained nodes. internal override int IMECharCount { get { return _imeCharCount; } set { _imeCharCount = value; } } // Count of TextPositions referencing the node's BeforeStart edge. // Since nodes don't usually have any references, we demand allocate // storage when needed. internal override bool BeforeStartReferenceCount { get { return (_edgeReferenceCounts & ElementEdge.BeforeStart) != 0; } set { Invariant.Assert(value); // Illegal to clear a set ref count. _edgeReferenceCounts |= ElementEdge.BeforeStart; } } // Count of TextPositions referencing the node's AfterStart edge. // Since nodes don't usually have any references, we demand allocate // storage when needed. internal override bool AfterStartReferenceCount { get { return (_edgeReferenceCounts & ElementEdge.AfterStart) != 0; } set { Invariant.Assert(value); // Illegal to clear a set ref count. _edgeReferenceCounts |= ElementEdge.AfterStart; } } // Count of TextPositions referencing the node's BeforeEnd edge. // Since nodes don't usually have any references, we demand allocate // storage when needed. internal override bool BeforeEndReferenceCount { get { return (_edgeReferenceCounts & ElementEdge.BeforeEnd) != 0; } set { Invariant.Assert(value); // Illegal to clear a set ref count. _edgeReferenceCounts |= ElementEdge.BeforeEnd; } } // Count of TextPositions referencing the node's AfterEnd edge. // Since nodes don't usually have any references, we demand allocate // storage when needed. internal override bool AfterEndReferenceCount { get { return (_edgeReferenceCounts & ElementEdge.AfterEnd) != 0; } set { Invariant.Assert(value); // Illegal to clear a set ref count. _edgeReferenceCounts |= ElementEdge.AfterEnd; } } // The TextElement associated with this node. internal TextElement TextElement { get { return _textElement; } set { _textElement = value; } } // Plain text character count of this element's start edge. // This property depends on the current location of the node! internal int IMELeftEdgeCharCount { get { return (_textElement == null) ? -1 : _textElement.IMELeftEdgeCharCount; } } // Returns true if this node is the leftmost sibling of its parent. internal bool IsFirstSibling { get { Splay(); return (_leftChildNode == null); } } #endregion Internal Properties //----------------------------------------------------- // // Private Fields // //----------------------------------------------------- #region Private Fields // Count of symbols of all siblings preceding this node. private int _leftSymbolCount; // Count of chars of all siblings preceding this node. private int _leftCharCount; // If this node is a local root, then ParentNode contains it. // Otherwise, this is the node parenting this node within its tree. private TextTreeNode _parentNode; // Left child node in a sibling tree. private TextTreeNode _leftChildNode; // Right child node in a sibling tree. private TextTreeNode _rightChildNode; // Root node of a contained tree, if any. private TextTreeNode _containedNode; // The TextContainer's generation when SymbolOffsetCache was last updated. // If the current generation doesn't match TextContainer.Generation, then // SymbolOffsetCache is invalid. private uint _generation; // Cached symbol offset. private int _symbolOffsetCache; // Count of symbols covered by this node and any contained nodes. // Includes two symbols for this node's start/end edges. private int _symbolCount; // Count of chars covered by this node and any contained nodes. private int _imeCharCount; // The TextElement associated with this node. private TextElement _textElement; // Reference counts of TextPositions referencing this node. // Lazy allocated -- null means no references. private ElementEdge _edgeReferenceCounts; #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
- WindowsEditBox.cs
- IndentTextWriter.cs
- ListDataHelper.cs
- BigInt.cs
- TextEditorMouse.cs
- MissingMemberException.cs
- Section.cs
- StartUpEventArgs.cs
- RegisteredHiddenField.cs
- CustomActivityDesigner.cs
- XmlUnspecifiedAttribute.cs
- SendParametersContent.cs
- WindowsSysHeader.cs
- UniqueIdentifierService.cs
- XsdValidatingReader.cs
- Token.cs
- BufferedGraphicsManager.cs
- DataBoundControlAdapter.cs
- _ShellExpression.cs
- PropertyKey.cs
- GridViewCommandEventArgs.cs
- ListParagraph.cs
- ClientBuildManager.cs
- GeneralTransform3DTo2D.cs
- HatchBrush.cs
- QueryableFilterUserControl.cs
- MultiByteCodec.cs
- NestedContainer.cs
- TypedTableGenerator.cs
- Terminate.cs
- UInt64Converter.cs
- StringPropertyBuilder.cs
- SiteMapProvider.cs
- DataGridViewColumnStateChangedEventArgs.cs
- EventLog.cs
- NullableIntMinMaxAggregationOperator.cs
- ErrorWebPart.cs
- HwndSource.cs
- ActivationWorker.cs
- MappingItemCollection.cs
- MaterialGroup.cs
- DuplicateMessageDetector.cs
- ChildrenQuery.cs
- COAUTHIDENTITY.cs
- DomNameTable.cs
- _ConnectStream.cs
- SpanIndex.cs
- XPathArrayIterator.cs
- ReachDocumentReferenceCollectionSerializer.cs
- OpenFileDialog.cs
- StaticTextPointer.cs
- EventListenerClientSide.cs
- RoleGroupCollection.cs
- PagesChangedEventArgs.cs
- MouseButton.cs
- TemplatePartAttribute.cs
- ConfigXmlWhitespace.cs
- SafeHandles.cs
- DependencyPropertyDescriptor.cs
- DesignerCommandSet.cs
- XamlReaderHelper.cs
- BindingMemberInfo.cs
- WindowsGraphicsCacheManager.cs
- PageThemeParser.cs
- ToolStripScrollButton.cs
- WeakKeyDictionary.cs
- KeyGestureConverter.cs
- ToolStripButton.cs
- Send.cs
- GeneralTransformGroup.cs
- FirstMatchCodeGroup.cs
- ContractNamespaceAttribute.cs
- oledbconnectionstring.cs
- SafeNativeMethods.cs
- PriorityQueue.cs
- DesignTimeDataBinding.cs
- FreeFormDragDropManager.cs
- ParentQuery.cs
- RuleSetCollection.cs
- StringKeyFrameCollection.cs
- IntegerValidator.cs
- ItemDragEvent.cs
- PerfProviderCollection.cs
- FullTextLine.cs
- querybuilder.cs
- RouteUrlExpressionBuilder.cs
- FileDialog.cs
- CryptoKeySecurity.cs
- PerfProviderCollection.cs
- Intellisense.cs
- DisplayToken.cs
- DataGridItemEventArgs.cs
- LogStore.cs
- loginstatus.cs
- FormsAuthenticationCredentials.cs
- hwndwrapper.cs
- PartialList.cs
- StringConcat.cs
- ThreadInterruptedException.cs
- MetadataArtifactLoaderCompositeResource.cs