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 / 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
- MessageAction.cs
- CellConstant.cs
- BamlResourceSerializer.cs
- DetailsViewInsertEventArgs.cs
- Light.cs
- TextRangeSerialization.cs
- ListViewContainer.cs
- TransactionInterop.cs
- NamespaceList.cs
- EmptyQuery.cs
- XmlDataDocument.cs
- SqlClientFactory.cs
- HttpListenerException.cs
- UriScheme.cs
- WindowsHyperlink.cs
- InputMethodStateChangeEventArgs.cs
- TransformDescriptor.cs
- EpmContentDeSerializer.cs
- EntityContainerEmitter.cs
- EventArgs.cs
- AutoScrollExpandMessageFilter.cs
- COAUTHINFO.cs
- ImportCatalogPart.cs
- Column.cs
- XmlReflectionMember.cs
- DesignColumn.cs
- RectAnimationClockResource.cs
- FlowDocumentReader.cs
- TCPClient.cs
- InstanceLockLostException.cs
- SingleAnimationBase.cs
- ExtensionSurface.cs
- MenuTracker.cs
- Config.cs
- EmbeddedMailObject.cs
- SymbolPair.cs
- RichTextBox.cs
- TrackingQueryElement.cs
- PolygonHotSpot.cs
- Classification.cs
- WindowsListBox.cs
- EmptyImpersonationContext.cs
- KeyEvent.cs
- ContextMenuAutomationPeer.cs
- RangeValuePattern.cs
- XmlSchemaNotation.cs
- CriticalExceptions.cs
- RuntimeWrappedException.cs
- NavigationHelper.cs
- ConditionalDesigner.cs
- WebConfigurationManager.cs
- XmlArrayAttribute.cs
- Hyperlink.cs
- NamespaceList.cs
- Italic.cs
- PersonalizationStateQuery.cs
- BitmapEffectCollection.cs
- PublishLicense.cs
- XmlQueryTypeFactory.cs
- StringAttributeCollection.cs
- IChannel.cs
- ShaperBuffers.cs
- FileRegion.cs
- MissingFieldException.cs
- ContextStack.cs
- TreeViewItemAutomationPeer.cs
- CfgSemanticTag.cs
- HtmlButton.cs
- TdsParameterSetter.cs
- DocumentSequence.cs
- DataAdapter.cs
- BitArray.cs
- StrongNameMembershipCondition.cs
- EditorServiceContext.cs
- HierarchicalDataTemplate.cs
- GridViewRowEventArgs.cs
- PeerDuplexChannelListener.cs
- RoleManagerSection.cs
- HTMLTagNameToTypeMapper.cs
- CodeTypeReferenceCollection.cs
- DummyDataSource.cs
- EnumConverter.cs
- CodeChecksumPragma.cs
- BigInt.cs
- MulticastNotSupportedException.cs
- AttributeCollection.cs
- HijriCalendar.cs
- PreservationFileReader.cs
- SrgsRuleRef.cs
- SqlXml.cs
- XmlSubtreeReader.cs
- Transform3D.cs
- WarningException.cs
- Guid.cs
- ComponentChangedEvent.cs
- GuidelineSet.cs
- ContractListAdapter.cs
- UdpDiscoveryMessageFilter.cs
- BitConverter.cs
- XmlSerializerSection.cs