// Returns true iff the indicated content has scoping highlights.
internal override bool IsContentHighlighted(StaticTextPointer textPosition, LogicalDirection direction)
{
int segmentCount;
TextSegment textSegment;
// No highlight when the selection is for interim character.
if (_selection.IsInterimSelection)
{
return false;
}
// Check all segments of selection
List<TextSegment> textSegments = _selection.TextSegments;
segmentCount = textSegments.Count;
for (int segmentIndex = 0; segmentIndex < segmentCount; segmentIndex++)
{
textSegment = textSegments[segmentIndex];
if ((direction == LogicalDirection.Forward && textSegment.Start.CompareTo(textPosition) <= 0 && textPosition.CompareTo(textSegment.End) < 0) || //
(direction == LogicalDirection.Backward && textSegment.Start.CompareTo(textPosition) < 0 && textPosition.CompareTo(textSegment.End) <= 0))
{
return true;
}
}
return false;
}
// Token: 0x06003010 RID: 12304 RVA: 0x000D8268 File Offset: 0x000D6468
private void RaiseChangedEventForLayerContent(HighlightLayer highlightLayer)
{
if (this.Changed != null)
{
List <TextSegment> list = new List <TextSegment>();
StaticTextPointer staticTextPointer = this._textContainer.CreateStaticPointerAtOffset(0);
for (;;)
{
if (!highlightLayer.IsContentHighlighted(staticTextPointer, LogicalDirection.Forward))
{
staticTextPointer = highlightLayer.GetNextChangePosition(staticTextPointer, LogicalDirection.Forward);
if (staticTextPointer.IsNull)
{
break;
}
}
StaticTextPointer staticTextPointer2 = staticTextPointer;
staticTextPointer = highlightLayer.GetNextChangePosition(staticTextPointer, LogicalDirection.Forward);
Invariant.Assert(!staticTextPointer.IsNull, "Highlight start not followed by highlight end!");
list.Add(new TextSegment(staticTextPointer2.CreateDynamicTextPointer(LogicalDirection.Forward), staticTextPointer.CreateDynamicTextPointer(LogicalDirection.Forward)));
}
if (list.Count > 0)
{
this.Changed(this, new Highlights.LayerHighlightChangedEventArgs(new ReadOnlyCollection <TextSegment>(list), highlightLayer.OwnerType));
}
}
}
// Token: 0x0600847C RID: 33916 RVA: 0x002483B0 File Offset: 0x002465B0
private StaticTextPointer GetStaticPositionInChildContainer(StaticTextPointer textPosition, LogicalDirection direction, StaticTextPointer originalPosition)
{
StaticTextPointer result = StaticTextPointer.Null;
if (!textPosition.IsNull)
{
DocumentSequenceTextPointer documentSequenceTextPointer = textPosition.CreateDynamicTextPointer(LogicalDirection.Forward) as DocumentSequenceTextPointer;
ITextPointer textPointer = documentSequenceTextPointer.ChildPointer;
if (textPointer.TextContainer != originalPosition.TextContainer)
{
if (this.IsContentHighlighted(originalPosition, direction))
{
textPointer = ((direction == LogicalDirection.Forward) ? originalPosition.TextContainer.End : originalPosition.TextContainer.Start);
result = textPointer.CreateStaticPointer();
}
else
{
result = StaticTextPointer.Null;
}
}
else
{
result = textPointer.CreateStaticPointer();
}
}
return(result);
}
/// <summary>
/// Returns the position of the next highlight start or end in an
/// indicated direction, or null if there is no such position.
/// </summary>
/// <param name="textPosition">
/// Position to query.
/// </param>
/// <param name="direction">
/// Direction of content to query.
/// </param>
internal virtual StaticTextPointer GetNextHighlightChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer changePosition;
StaticTextPointer closestChangePosition;
int i;
closestChangePosition = StaticTextPointer.Null;
// Calculate the min of the layers' transitions.
for (i = 0; i < this.LayerCount; i++)
{
changePosition = GetLayer(i).GetNextChangePosition(textPosition, direction);
if (!changePosition.IsNull)
{
if (closestChangePosition.IsNull)
{
closestChangePosition = changePosition;
}
else if (direction == LogicalDirection.Forward)
{
closestChangePosition = StaticTextPointer.Min(closestChangePosition, changePosition);
}
else
{
closestChangePosition = StaticTextPointer.Max(closestChangePosition, changePosition);
}
}
}
return(closestChangePosition);
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
/// <summary>
/// Returns the value of a property stored on scoping highlight, if any.
/// </summary>
/// <param name="textPosition">
/// Position to query.
/// </param>
/// <param name="direction">
/// Direction of content to query.
/// </param>
/// <param name="highlightLayerOwnerType">
/// Type of the matching highlight layer owner.
/// </param>
/// <returns>
/// The highlight value if set on any scoping highlight. If no property
/// value is set, returns DependencyProperty.UnsetValue.
/// </returns>
internal virtual object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction, Type highlightLayerOwnerType)
{
int layerIndex;
object value;
HighlightLayer layer;
value = DependencyProperty.UnsetValue;
// Take the value on the closest layer. "Closest" == added first.
for (layerIndex = 0; layerIndex < this.LayerCount; layerIndex++)
{
layer = GetLayer(layerIndex);
if (layer.OwnerType == highlightLayerOwnerType)
{
value = layer.GetHighlightValue(textPosition, direction);
if (value != DependencyProperty.UnsetValue)
{
break;
}
}
}
return(value);
}
// Token: 0x060035AE RID: 13742 RVA: 0x000F3B04 File Offset: 0x000F1D04
private int FindIndex(StaticTextPointer position, LogicalDirection direction)
{
int num = -1;
int i = 0;
int num2 = this._runList.Count;
while (i < num2)
{
num = (i + num2) / 2;
SpellerStatusTable.Run run = this.GetRun(num);
if ((direction == LogicalDirection.Forward && position.CompareTo(run.Position) < 0) || (direction == LogicalDirection.Backward && position.CompareTo(run.Position) <= 0))
{
num2 = num;
}
else
{
if ((direction != LogicalDirection.Forward || position.CompareTo(this.GetRunEndPosition(num)) < 0) && (direction != LogicalDirection.Backward || position.CompareTo(this.GetRunEndPosition(num)) <= 0))
{
break;
}
i = num + 1;
}
}
if (i >= num2)
{
num = -1;
}
return(num);
}
/// <summary>
/// Returns the closest neighboring TextPointer in an indicated
/// direction where a property value calculated from an embedded
/// object, scoping text element, or scoping highlight could
/// change.
/// </summary>
/// <param name="textPosition">
/// Position to query.
/// </param>
/// <param name="direction">
/// Direction of content to query.
/// </param>
/// <returns>
/// If the following symbol is TextPointerContext.EmbeddedElement,
/// TextPointerContext.ElementBegin, or TextPointerContext.ElementEnd, returns
/// a TextPointer exactly one symbol distant.
///
/// If the following symbol is TextPointerContext.Text, the distance
/// of the returned TextPointer is the minimum of the value returned
/// by textPosition.GetTextLength and the distance to any highlight
/// start or end edge.
///
/// If the following symbol is TextPointerContext.None, returns null.
/// </returns>
internal virtual StaticTextPointer GetNextPropertyChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer changePosition;
StaticTextPointer characterRunEndPosition;
switch (textPosition.GetPointerContext(direction))
{
case TextPointerContext.None:
changePosition = StaticTextPointer.Null;
break;
case TextPointerContext.Text:
changePosition = GetNextHighlightChangePosition(textPosition, direction);
characterRunEndPosition = textPosition.GetNextContextPosition(LogicalDirection.Forward);
if (changePosition.IsNull ||
characterRunEndPosition.CompareTo(changePosition) < 0)
{
changePosition = characterRunEndPosition;
}
break;
case TextPointerContext.EmbeddedElement:
case TextPointerContext.ElementStart:
case TextPointerContext.ElementEnd:
default:
changePosition = textPosition.CreatePointer(+1);
break;
}
return(changePosition);
}
// Returns true iff the indicated content has scoping highlights.
internal override bool IsContentHighlighted(StaticTextPointer textPosition, LogicalDirection direction)
{
int segmentCount;
TextSegment textSegment;
// No highlight when the selection is for interim character.
if (_selection.IsInterimSelection)
{
return(false);
}
// Check all segments of selection
List <TextSegment> textSegments = _selection.TextSegments;
segmentCount = textSegments.Count;
for (int segmentIndex = 0; segmentIndex < segmentCount; segmentIndex++)
{
textSegment = textSegments[segmentIndex];
if ((direction == LogicalDirection.Forward && textSegment.Start.CompareTo(textPosition) <= 0 && textPosition.CompareTo(textSegment.End) < 0) || //
(direction == LogicalDirection.Backward && textSegment.Start.CompareTo(textPosition) < 0 && textPosition.CompareTo(textSegment.End) <= 0))
{
return(true);
}
}
return(false);
}
// Token: 0x06003006 RID: 12294 RVA: 0x000D8010 File Offset: 0x000D6210
internal virtual StaticTextPointer GetNextHighlightChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer staticTextPointer = StaticTextPointer.Null;
for (int i = 0; i < this.LayerCount; i++)
{
StaticTextPointer nextChangePosition = this.GetLayer(i).GetNextChangePosition(textPosition, direction);
if (!nextChangePosition.IsNull)
{
if (staticTextPointer.IsNull)
{
staticTextPointer = nextChangePosition;
}
else if (direction == LogicalDirection.Forward)
{
staticTextPointer = StaticTextPointer.Min(staticTextPointer, nextChangePosition);
}
else
{
staticTextPointer = StaticTextPointer.Max(staticTextPointer, nextChangePosition);
}
}
}
return(staticTextPointer);
}
/// <summary>
/// Sets parentPosition to be a valid TextPointer in the parent document. This could either
/// be the textPosition passed in (if its already on the parent document) or a conversion
/// of the textPosition passed in.
/// </summary>
/// <returns>whether or not parentPosition is valid and should be used</returns>
private bool EnsureParentPosition(StaticTextPointer textPosition, LogicalDirection direction, out StaticTextPointer parentPosition)
{
// Simple case - textPosition is already in the parent TextContainer
parentPosition = textPosition;
// If textPosition is on a child TextContainer, we convert it
if (textPosition.TextContainer.Highlights != this)
{
// This case can't be converted so return false, out parameter should not be used
if (textPosition.GetPointerContext(direction) == TextPointerContext.None)
{
return(false);
}
// Turn the textPosition (which should be in the scope of a FixedDocument)
// into a position in the scope of the DocumentSequence.
ITextPointer dynamicTextPointer = textPosition.CreateDynamicTextPointer(LogicalDirection.Forward);
ITextPointer parentTextPointer = ((DocumentSequenceTextContainer)this.TextContainer).MapChildPositionToParent(dynamicTextPointer);
Debug.Assert(parentTextPointer != null);
parentPosition = parentTextPointer.CreateStaticPointer();
}
// Returning true - either we started with a parent position or we converted to one
return(true);
}
// Returns the position of the next highlight start or end in an
// indicated direction, or null if there is no such position.
internal override StaticTextPointer GetNextChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer transitionPosition;
AttributeRange attributeRange;
int i;
transitionPosition = StaticTextPointer.Null;
// Use a simple iterative search since we don't ever have
// more than a handful of attributes in a composition.
if (direction == LogicalDirection.Forward)
{
for (i = 0; i < _attributeRanges.Count; i++)
{
attributeRange = (AttributeRange)_attributeRanges[i];
if (attributeRange.Start.CompareTo(attributeRange.End) != 0)
{
if (textPosition.CompareTo(attributeRange.Start) < 0)
{
transitionPosition = attributeRange.Start.CreateStaticPointer();
break;
}
else if (textPosition.CompareTo(attributeRange.End) < 0)
{
transitionPosition = attributeRange.End.CreateStaticPointer();
break;
}
}
}
}
else
{
for (i = _attributeRanges.Count - 1; i >= 0; i--)
{
attributeRange = (AttributeRange)_attributeRanges[i];
if (attributeRange.Start.CompareTo(attributeRange.End) != 0)
{
if (textPosition.CompareTo(attributeRange.End) > 0)
{
transitionPosition = attributeRange.End.CreateStaticPointer();
break;
}
else if (textPosition.CompareTo(attributeRange.Start) > 0)
{
transitionPosition = attributeRange.Start.CreateStaticPointer();
break;
}
}
}
}
return transitionPosition;
}
// Returns the position of the next highlight start or end in an
// indicated direction, or null if there is no such position.
internal override StaticTextPointer GetNextChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer transitionPosition;
AttributeRange attributeRange;
int i;
transitionPosition = StaticTextPointer.Null;
// Use a simple iterative search since we don't ever have
// more than a handful of attributes in a composition.
if (direction == LogicalDirection.Forward)
{
for (i = 0; i < _attributeRanges.Count; i++)
{
attributeRange = (AttributeRange)_attributeRanges[i];
if (attributeRange.Start.CompareTo(attributeRange.End) != 0)
{
if (textPosition.CompareTo(attributeRange.Start) < 0)
{
transitionPosition = attributeRange.Start.CreateStaticPointer();
break;
}
else if (textPosition.CompareTo(attributeRange.End) < 0)
{
transitionPosition = attributeRange.End.CreateStaticPointer();
break;
}
}
}
}
else
{
for (i = _attributeRanges.Count - 1; i >= 0; i--)
{
attributeRange = (AttributeRange)_attributeRanges[i];
if (attributeRange.Start.CompareTo(attributeRange.End) != 0)
{
if (textPosition.CompareTo(attributeRange.End) > 0)
{
transitionPosition = attributeRange.End.CreateStaticPointer();
break;
}
else if (textPosition.CompareTo(attributeRange.Start) > 0)
{
transitionPosition = attributeRange.Start.CreateStaticPointer();
break;
}
}
}
}
return(transitionPosition);
}
// Token: 0x06003005 RID: 12293 RVA: 0x000D7FD8 File Offset: 0x000D61D8
internal virtual bool IsContentHighlighted(StaticTextPointer textPosition, LogicalDirection direction)
{
int num = 0;
while (num < this.LayerCount && !this.GetLayer(num).IsContentHighlighted(textPosition, direction))
{
num++;
}
return(num < this.LayerCount);
}
// Token: 0x06008477 RID: 33911 RVA: 0x00248284 File Offset: 0x00246484
internal override object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction, Type highlightLayerOwnerType)
{
StaticTextPointer textPosition2;
if (this.EnsureParentPosition(textPosition, direction, out textPosition2))
{
return(base.GetHighlightValue(textPosition2, direction, highlightLayerOwnerType));
}
return(DependencyProperty.UnsetValue);
}
// Returns the AttributeRange covering specified content, or null
// if no such range exists.
private AttributeRange GetRangeAtPosition(StaticTextPointer textPosition, LogicalDirection direction)
{
int i;
AttributeRange attributeRange;
AttributeRange attributeRangeAtPosition;
// Use a simple iterative search since we don't ever have
// more than a handful of attributes in a composition.
attributeRangeAtPosition = null;
if (direction == LogicalDirection.Forward)
{
for (i = 0; i < _attributeRanges.Count; i++)
{
attributeRange = (AttributeRange)_attributeRanges[i];
if (attributeRange.Start.CompareTo(attributeRange.End) != 0)
{
if (textPosition.CompareTo(attributeRange.Start) < 0)
{
break;
}
else if (textPosition.CompareTo(attributeRange.End) < 0)
{
attributeRangeAtPosition = attributeRange;
break;
}
}
}
}
else
{
for (i = _attributeRanges.Count - 1; i >= 0; i--)
{
attributeRange = (AttributeRange)_attributeRanges[i];
if (attributeRange.Start.CompareTo(attributeRange.End) != 0)
{
if (textPosition.CompareTo(attributeRange.End) > 0)
{
break;
}
else if (textPosition.CompareTo(attributeRange.Start) > 0)
{
attributeRangeAtPosition = attributeRange;
break;
}
}
}
}
return(attributeRangeAtPosition);
}
/// <summary>
/// Returns true iff the indicated content has scoping highlights.
/// </summary>
/// <param name="textPosition">
/// Position to query.
/// </param>
/// <param name="direction">
/// Direction of content to query.
/// </param>
internal override bool IsContentHighlighted(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer parentPosition;
if (EnsureParentPosition(textPosition, direction, out parentPosition))
{
return(base.IsContentHighlighted(parentPosition, direction));
}
return(false);
}
// Returns true if the specified character is part of a run of the specified type.
internal bool IsRunType(StaticTextPointer textPosition, LogicalDirection direction, RunType runType)
{
int index = FindIndex(textPosition, direction);
if (index < 0)
{
return(false);
}
return(GetRun(index).RunType == runType);
}
// Token: 0x060035AB RID: 13739 RVA: 0x000F3A30 File Offset: 0x000F1C30
internal bool GetError(StaticTextPointer textPosition, LogicalDirection direction, out ITextPointer start, out ITextPointer end)
{
start = null;
end = null;
int errorIndex = this.GetErrorIndex(textPosition, direction);
if (errorIndex >= 0)
{
start = this.GetRun(errorIndex).Position;
end = this.GetRunEndPositionDynamic(errorIndex);
}
return(start != null);
}
// Token: 0x06003C67 RID: 15463 RVA: 0x0011732C File Offset: 0x0011552C
internal override StaticTextPointer GetNextChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer result = StaticTextPointer.Null;
if (!this.IsTextRangeEmpty(this._selection) && !this._selection.IsInterimSelection)
{
List <TextSegment> textSegments = this._selection.TextSegments;
int count = textSegments.Count;
if (direction == LogicalDirection.Forward)
{
for (int i = 0; i < count; i++)
{
TextSegment textSegment = textSegments[i];
if (textSegment.Start.CompareTo(textSegment.End) != 0)
{
if (textPosition.CompareTo(textSegment.Start) < 0)
{
result = textSegment.Start.CreateStaticPointer();
break;
}
if (textPosition.CompareTo(textSegment.End) < 0)
{
result = textSegment.End.CreateStaticPointer();
break;
}
}
}
}
else
{
for (int j = count - 1; j >= 0; j--)
{
TextSegment textSegment = textSegments[j];
if (textSegment.Start.CompareTo(textSegment.End) != 0)
{
if (textPosition.CompareTo(textSegment.End) > 0)
{
result = textSegment.End.CreateStaticPointer();
break;
}
if (textPosition.CompareTo(textSegment.Start) > 0)
{
result = textSegment.Start.CreateStaticPointer();
break;
}
}
}
}
}
return(result);
}
// Token: 0x06003C65 RID: 15461 RVA: 0x00117274 File Offset: 0x00115474
internal override object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction)
{
object result;
if (this.IsContentHighlighted(textPosition, direction))
{
result = TextSelectionHighlightLayer._selectedValue;
}
else
{
result = DependencyProperty.UnsetValue;
}
return(result);
}
// Token: 0x060035AD RID: 13741 RVA: 0x000F3ACC File Offset: 0x000F1CCC
private int GetErrorIndex(StaticTextPointer textPosition, LogicalDirection direction)
{
int num = this.FindIndex(textPosition, direction);
if (num >= 0)
{
SpellerStatusTable.Run run = this.GetRun(num);
if (run.RunType == SpellerStatusTable.RunType.Clean || run.RunType == SpellerStatusTable.RunType.Dirty)
{
num = -1;
}
}
return(num);
}
/// <summary>
/// Returns true iff the indicated content has scoping highlights.
/// </summary>
/// <param name="textPosition">
/// Position to query.
/// </param>
/// <param name="direction">
/// Direction of content to query.
/// </param>
internal virtual bool IsContentHighlighted(StaticTextPointer textPosition, LogicalDirection direction)
{
int i;
for (i = 0; i < this.LayerCount; i++)
{
if (GetLayer(i).IsContentHighlighted(textPosition, direction))
{
break;
}
}
return(i < this.LayerCount);
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
// Returns the value of a property stored on scoping highlight, if any.
//
// If no property value is set, returns DependencyProperty.UnsetValue.
internal override object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction)
{
AttributeRange attributeRange;
object value;
value = DependencyProperty.UnsetValue;
attributeRange = GetRangeAtPosition(textPosition, direction);
if (attributeRange != null)
{
value = attributeRange.TextDecorations;
}
return value;
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
// Returns the value of a property stored on scoping highlight, if any.
//
// If no property value is set, returns DependencyProperty.UnsetValue.
internal override object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction)
{
object value;
if (IsContentHighlighted(textPosition, direction))
{
value = _selectedValue;
}
else
{
value = DependencyProperty.UnsetValue;
}
return value;
}
// Token: 0x0600847A RID: 33914 RVA: 0x00248314 File Offset: 0x00246514
internal override StaticTextPointer GetNextPropertyChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer staticTextPointer = StaticTextPointer.Null;
StaticTextPointer textPosition2;
if (this.EnsureParentPosition(textPosition, direction, out textPosition2))
{
staticTextPointer = base.GetNextPropertyChangePosition(textPosition2, direction);
if (textPosition.TextContainer.Highlights != this)
{
staticTextPointer = this.GetStaticPositionInChildContainer(staticTextPointer, direction, textPosition);
}
}
return(staticTextPointer);
}
// Token: 0x0600847B RID: 33915 RVA: 0x00248358 File Offset: 0x00246558
private bool EnsureParentPosition(StaticTextPointer textPosition, LogicalDirection direction, out StaticTextPointer parentPosition)
{
parentPosition = textPosition;
if (textPosition.TextContainer.Highlights != this)
{
if (textPosition.GetPointerContext(direction) == TextPointerContext.None)
{
return(false);
}
ITextPointer tp = textPosition.CreateDynamicTextPointer(LogicalDirection.Forward);
ITextPointer textPointer = ((DocumentSequenceTextContainer)base.TextContainer).MapChildPositionToParent(tp);
parentPosition = textPointer.CreateStaticPointer();
}
return(true);
}
// Token: 0x060035AC RID: 13740 RVA: 0x000F3A70 File Offset: 0x000F1C70
internal bool GetRun(StaticTextPointer position, LogicalDirection direction, out SpellerStatusTable.RunType runType, out StaticTextPointer end)
{
int num = this.FindIndex(position, direction);
runType = SpellerStatusTable.RunType.Clean;
end = StaticTextPointer.Null;
if (num < 0)
{
return(false);
}
SpellerStatusTable.Run run = this.GetRun(num);
runType = run.RunType;
end = ((direction == LogicalDirection.Forward) ? this.GetRunEndPosition(num) : run.Position.CreateStaticPointer());
return(true);
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
// Returns a TextDecorationCollection used to tag spelling errors,
// or DependencyProperty.UnsetValue if there's no error at the specified position.
internal override object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction)
{
object value;
if (IsContentHighlighted(textPosition, direction))
{
value = _errorTextDecorations;
}
else
{
value = DependencyProperty.UnsetValue;
}
return(value);
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
// Returns the value of a property stored on scoping highlight, if any.
//
// If no property value is set, returns DependencyProperty.UnsetValue.
internal override object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction)
{
AttributeRange attributeRange;
object value;
value = DependencyProperty.UnsetValue;
attributeRange = GetRangeAtPosition(textPosition, direction);
if (attributeRange != null)
{
value = attributeRange.TextDecorations;
}
return(value);
}
// Finds the index of a run containing the specified content.
// Returns -1 if there is no run in the indicated direction -- when
// position is at the document edge pointing to nothing.
private int FindIndex(StaticTextPointer position, LogicalDirection direction)
{
Run run;
int index;
int minIndex;
int maxIndex;
index = -1;
minIndex = 0;
maxIndex = _runList.Count;
while (minIndex < maxIndex)
{
index = (minIndex + maxIndex) / 2;
run = GetRun(index);
if (direction == LogicalDirection.Forward && position.CompareTo(run.Position) < 0 ||
direction == LogicalDirection.Backward && position.CompareTo(run.Position) <= 0)
{
// Search to the left.
maxIndex = index;
}
else if (direction == LogicalDirection.Forward && position.CompareTo(GetRunEndPosition(index)) >= 0 ||
direction == LogicalDirection.Backward && position.CompareTo(GetRunEndPosition(index)) > 0)
{
// Search to the right.
minIndex = index + 1;
}
else
{
// Got a match.
break;
}
}
if (minIndex >= maxIndex)
{
// We walked off the document edge searching.
// position is at document start or end, and direction
// points off into space, so there's no associated run.
index = -1;
}
return(index);
}
// Token: 0x06003004 RID: 12292 RVA: 0x000D7F8C File Offset: 0x000D618C
internal virtual object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction, Type highlightLayerOwnerType)
{
object obj = DependencyProperty.UnsetValue;
for (int i = 0; i < this.LayerCount; i++)
{
HighlightLayer layer = this.GetLayer(i);
if (layer.OwnerType == highlightLayerOwnerType)
{
obj = layer.GetHighlightValue(textPosition, direction);
if (obj != DependencyProperty.UnsetValue)
{
break;
}
}
}
return(obj);
}
/// <summary>
/// Returns the closest neighboring TextPointer in an indicated
/// direction where a property value calculated from an embedded
/// object, scoping text element, or scoping highlight could
/// change.
/// </summary>
/// <param name="textPosition">
/// Position to query.
/// </param>
/// <param name="direction">
/// Direction of content to query.
/// </param>
/// <returns>
/// If the following symbol is TextPointerContext.EmbeddedElement,
/// TextPointerContext.ElementBegin, or TextPointerContext.ElementEnd, returns
/// a TextPointer exactly one symbol distant.
///
/// If the following symbol is TextPointerContext.Text, the distance
/// of the returned TextPointer is the minimum of the value returned
/// by textPosition.GetTextLength and the distance to any highlight
/// start or end edge.
///
/// If the following symbol is TextPointerContext.None, returns null.
/// </returns>
internal override StaticTextPointer GetNextPropertyChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer parentPosition;
StaticTextPointer returnPointer = StaticTextPointer.Null;
if (EnsureParentPosition(textPosition, direction, out parentPosition))
{
returnPointer = base.GetNextPropertyChangePosition(parentPosition, direction);
// If we were passed a child position, we need to convert the result back to a child position
if (textPosition.TextContainer.Highlights != this)
{
returnPointer = GetStaticPositionInChildContainer(returnPointer, direction, textPosition);
}
}
return(returnPointer);
}
// Token: 0x060035AA RID: 13738 RVA: 0x000F3964 File Offset: 0x000F1B64
internal StaticTextPointer GetNextErrorTransition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer staticTextPointer = StaticTextPointer.Null;
int num = this.FindIndex(textPosition, direction);
if (num != -1)
{
if (direction == LogicalDirection.Forward)
{
if (this.IsErrorRun(num))
{
staticTextPointer = this.GetRunEndPosition(num);
}
else
{
for (int i = num + 1; i < this._runList.Count; i++)
{
if (this.IsErrorRun(i))
{
staticTextPointer = this.GetRun(i).Position.CreateStaticPointer();
break;
}
}
}
}
else if (this.IsErrorRun(num))
{
staticTextPointer = this.GetRun(num).Position.CreateStaticPointer();
}
else
{
for (int i = num - 1; i > 0; i--)
{
if (this.IsErrorRun(i))
{
staticTextPointer = this.GetRunEndPosition(i);
break;
}
}
}
}
Invariant.Assert(staticTextPointer.IsNull || textPosition.CompareTo(staticTextPointer) != 0);
return(staticTextPointer);
}
//------------------------------------------------------
//
// Private Methods
//
//------------------------------------------------------
#region Private Methods
// Returns the index in _runList of an error covering the specified
// content, or -1 if no such error exists.
private int GetErrorIndex(StaticTextPointer textPosition, LogicalDirection direction)
{
int index;
Run run;
index = FindIndex(textPosition, direction);
if (index >= 0)
{
run = GetRun(index);
if (run.RunType == RunType.Clean || run.RunType == RunType.Dirty)
{
index = -1;
}
}
return(index);
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
/// <summary>
/// Returns the value of a property stored on scoping highlight, if any.
/// </summary>
/// <param name="textPosition">
/// Position to query.
/// </param>
/// <param name="direction">
/// Direction of content to query.
/// </param>
/// <param name="highlightLayerOwnerType">
/// Type of the matching highlight layer owner.
/// </param>
/// <returns>
/// The highlight value if set on any scoping highlight. If no property
/// value is set, returns DependencyProperty.UnsetValue.
/// </returns>
internal virtual object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction, Type highlightLayerOwnerType)
{
int layerIndex;
object value;
HighlightLayer layer;
value = DependencyProperty.UnsetValue;
// Take the value on the closest layer. "Closest" == added first.
for (layerIndex = 0; layerIndex < this.LayerCount; layerIndex++)
{
layer = GetLayer(layerIndex);
if (layer.OwnerType == highlightLayerOwnerType)
{
value = layer.GetHighlightValue(textPosition, direction);
if (value != DependencyProperty.UnsetValue)
break;
}
}
return value;
}
object ITextContainer.GetAdjacentElement(StaticTextPointer position, LogicalDirection direction)
{
return ((ITextPointer)position.Handle0).GetAdjacentElement(direction);
}
// Returns the next change position starting from the passed in StaticTextPointer. Determines this by checking
// the highlights of the DocumentSequence.
internal override StaticTextPointer GetNextChangePosition(StaticTextPointer staticTextPointer, LogicalDirection direction)
{
return this._docSeqContainer.Highlights.GetNextHighlightChangePosition(staticTextPointer, direction);
}
/// <summary>
/// Fetch the next run at embedded object position.
/// </summary>
/// <param name="dcp">
/// Character offset of this run.
/// </param>
/// <param name="position">
/// Current position in the text array.
/// </param>
protected TextRun HandleEmbeddedObject(int dcp, StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.EmbeddedElement, "TextPointer does not point to embedded object.");
TextRun run = null;
DependencyObject embeddedObject = position.GetAdjacentElement(LogicalDirection.Forward) as DependencyObject;
if (embeddedObject is UIElement)
{
// Extract the aggregated properties into something that the textrun can use.
TextRunProperties textProps = new TextProperties(embeddedObject, position, true /* inline objects */, true /* get background */);
// Create inline object run.
run = new InlineObjectRun(TextContainerHelper.EmbeddedObjectLength, (UIElement)embeddedObject, textProps, _paraClient.Paragraph as TextParagraph);
}
else
{
// If the embedded object is of an unknown type, treat it as hidden content.
run = new TextHidden(TextContainerHelper.EmbeddedObjectLength);
}
return run;
}
/// <summary>
/// Return next TextRun at element edge start position
/// </summary>
/// <param name="position">
/// Current position in text array
/// </param>
protected TextRun HandleElementStartEdge(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementStart, "TextPointer does not point to element start edge.");
//
TextRun run = null;
TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Debug.Assert(element != null, "Cannot use ITextContainer that does not provide TextElement instances.");
Invariant.Assert(!(element is Block), "We do not expect any Blocks inside Paragraphs");
// Treat figure and floaters as special hidden runs.
if (element is Figure || element is Floater)
{
// Get the length of the element
int cch = TextContainerHelper.GetElementLength(_paraClient.Paragraph.StructuralCache.TextContainer, element);
// Create special hidden run.
run = new FloatingRun(cch, element is Figure);
if (element is Figure)
{
_hasFigures = true;
}
else
{
_hasFloaters = true;
}
}
else if (element is LineBreak)
{
int cch = TextContainerHelper.GetElementLength(_paraClient.Paragraph.StructuralCache.TextContainer, element);
run = new LineBreakRun(cch, PTS.FSFLRES.fsflrSoftBreak);
}
else if (element.IsEmpty)
{
// Empty TextElement should affect line metrics.
// TextFormatter does not support this feature right now, so as workaround
// TextRun with ZERO WIDTH SPACE is used.
TextProperties textProps = new TextProperties(element, position, false /* inline objects */, true /* get background */);
char[] textBuffer = new char[_elementEdgeCharacterLength * 2];
// Assert that _elementEdgeCharacterLength is 1 before we use hard-coded indices
Invariant.Assert(_elementEdgeCharacterLength == 1, "Expected value of _elementEdgeCharacterLength is 1");
textBuffer[0] = (char)0x200B;
textBuffer[1] = (char)0x200B;
run = new TextCharacters(textBuffer, 0, textBuffer.Length, textProps);
}
else
{
Inline inline = (Inline) element;
DependencyObject parent = inline.Parent;
FlowDirection inlineFlowDirection = inline.FlowDirection;
FlowDirection parentFlowDirection = inlineFlowDirection;
TextDecorationCollection inlineTextDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if(parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (inlineFlowDirection != parentFlowDirection)
{
// Inline's flow direction is different from its parent. Need to create new TextSpanModifier with flow direction
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
null,
null,
inlineFlowDirection
);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground,
inlineFlowDirection
);
}
}
else
{
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground
);
}
}
}
return run;
}
object ITextContainer.GetValue(StaticTextPointer position, DependencyProperty formattingProperty)
{
return ((ITextPointer)position.Handle0).GetValue(formattingProperty);
}
StaticTextPointer ITextContainer.GetNextContextPosition(StaticTextPointer position, LogicalDirection direction)
{
return new StaticTextPointer(this, ((ITextPointer)position.Handle0).GetNextContextPosition(direction));
}
// Returns the type and end of the Run intersecting position.
internal bool GetRun(StaticTextPointer position, LogicalDirection direction, out RunType runType, out StaticTextPointer end)
{
int index = FindIndex(position, direction);
runType = RunType.Clean;
end = StaticTextPointer.Null;
if (index < 0)
{
return false;
}
Run run = GetRun(index);
runType = run.RunType;
end = (direction == LogicalDirection.Forward) ? GetRunEndPosition(index) : run.Position.CreateStaticPointer();
return true;
}
// Returns the position and suggested replacement list of an error covering
// the specified content.
// If no error exists, return false.
internal bool GetError(StaticTextPointer textPosition, LogicalDirection direction,
out ITextPointer start, out ITextPointer end)
{
int index;
start = null;
end = null;
index = GetErrorIndex(textPosition, direction);
if (index >= 0)
{
start = GetRun(index).Position;
end = GetRunEndPositionDynamic(index);
}
return (start != null);
}
// Returns the position of the next error start or end in an
// indicated direction, or null if there is no such position.
// Called by the SpellerHighlightLayer.
internal StaticTextPointer GetNextErrorTransition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer transitionPosition;
int index;
int i;
transitionPosition = StaticTextPointer.Null;
index = FindIndex(textPosition, direction);
if (index == -1)
{
// textPosition is at the document edge.
// leave transitionPosition null.
}
else if (direction == LogicalDirection.Forward)
{
if (IsErrorRun(index))
{
transitionPosition = GetRunEndPosition(index);
}
else
{
for (i = index+1; i < _runList.Count; i++)
{
if (IsErrorRun(i))
{
transitionPosition = GetRun(i).Position.CreateStaticPointer();
break;
}
}
}
}
else // direction == LogicalDirection.Backward
{
if (IsErrorRun(index))
{
transitionPosition = GetRun(index).Position.CreateStaticPointer();
}
else
{
for (i = index - 1; i > 0; i--)
{
if (IsErrorRun(i))
{
transitionPosition = GetRunEndPosition(i);
break;
}
}
}
}
// If we ever had two consecuative errors (with touching borders)
// we could return a transitionPosition == textPosition, which is illegal.
// We rely on the fact that consecutive errors are always separated
// by a word break to avoid this.
//
Invariant.Assert(transitionPosition.IsNull || textPosition.CompareTo(transitionPosition) != 0);
return transitionPosition;
}
// Returns true if the specified character is part of a run of the specified type.
internal bool IsRunType(StaticTextPointer textPosition, LogicalDirection direction, RunType runType)
{
int index = FindIndex(textPosition, direction);
if (index < 0)
{
return false;
}
return GetRun(index).RunType == runType;
}
//------------------------------------------------------
//
// Internal Methods
//
//-----------------------------------------------------
#region Internal Methods
// Method is not implemented. Should not need to be called for constructing the event args.
internal override object GetHighlightValue(StaticTextPointer staticTextPointer, LogicalDirection direction)
{
Debug.Assert(false, "This method is not implemented and not expected to be called.");
return null;
}
// Returns whether or not this text pointer has a highlight on it. Determines this by checking
// the highlights of the DocumentSequence.
internal override bool IsContentHighlighted(StaticTextPointer staticTextPointer, LogicalDirection direction)
{
return this._docSeqContainer.Highlights.IsContentHighlighted(staticTextPointer, direction);
}
DependencyObject ITextContainer.GetParent(StaticTextPointer position)
{
return null;
}
StaticTextPointer ITextContainer.CreatePointer(StaticTextPointer position, int offset)
{
return new StaticTextPointer(this, ((ITextPointer)position.Handle0).CreatePointer(offset));
}
//------------------------------------------------------
//
// Private Methods
//
//------------------------------------------------------
#region Private Methods
// Returns the index in _runList of an error covering the specified
// content, or -1 if no such error exists.
private int GetErrorIndex(StaticTextPointer textPosition, LogicalDirection direction)
{
int index;
Run run;
index = FindIndex(textPosition, direction);
if (index >= 0)
{
run = GetRun(index);
if (run.RunType == RunType.Clean || run.RunType == RunType.Dirty)
{
index = -1;
}
}
return index;
}
int ITextContainer.CompareTo(StaticTextPointer position1, ITextPointer position2)
{
return ((ITextPointer)position1.Handle0).CompareTo(position2);
}
// Finds the index of a run containing the specified content.
// Returns -1 if there is no run in the indicated direction -- when
// position is at the document edge pointing to nothing.
private int FindIndex(StaticTextPointer position, LogicalDirection direction)
{
Run run;
int index;
int minIndex;
int maxIndex;
index = -1;
minIndex = 0;
maxIndex = _runList.Count;
while (minIndex < maxIndex)
{
index = (minIndex + maxIndex) / 2;
run = GetRun(index);
if (direction == LogicalDirection.Forward && position.CompareTo(run.Position) < 0 ||
direction == LogicalDirection.Backward && position.CompareTo(run.Position) <= 0)
{
// Search to the left.
maxIndex = index;
}
else if (direction == LogicalDirection.Forward && position.CompareTo(GetRunEndPosition(index)) >= 0 ||
direction == LogicalDirection.Backward && position.CompareTo(GetRunEndPosition(index)) > 0)
{
// Search to the right.
minIndex = index + 1;
}
else
{
// Got a match.
break;
}
}
if (minIndex >= maxIndex)
{
// We walked off the document edge searching.
// position is at document start or end, and direction
// points off into space, so there's no associated run.
index = -1;
}
return index;
}
// Returns the position of the next highlight start or end in an
// indicated direction, or null if there is no such position.
internal override StaticTextPointer GetNextChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
{
StaticTextPointer transitionPosition;
transitionPosition = StaticTextPointer.Null;
if (!IsTextRangeEmpty(_selection) && !_selection.IsInterimSelection)
{
int segmentCount;
List<TextSegment> textSegments = _selection.TextSegments;
TextSegment textSegment;
segmentCount = textSegments.Count;
if (direction == LogicalDirection.Forward)
{
for (int segmentIndex = 0; segmentIndex < segmentCount; segmentIndex++)
{
textSegment = textSegments[segmentIndex];
// Ignore empty segments.
//
if (textSegment.Start.CompareTo(textSegment.End) != 0)
{
if (textPosition.CompareTo(textSegment.Start) < 0)
{
transitionPosition = textSegment.Start.CreateStaticPointer();
break;
}
else if (textPosition.CompareTo(textSegment.End) < 0)
{
transitionPosition = textSegment.End.CreateStaticPointer();
break;
}
}
}
}
else
{
for (int segmentIndex = segmentCount - 1; segmentIndex >= 0; segmentIndex--)
{
textSegment = textSegments[segmentIndex];
if (textSegment.Start.CompareTo(textSegment.End) != 0)
{
if (textPosition.CompareTo(textSegment.End) > 0)
{
transitionPosition = textSegment.End.CreateStaticPointer();
break;
}
else if (textPosition.CompareTo(textSegment.Start) > 0)
{
transitionPosition = textSegment.Start.CreateStaticPointer();
break;
}
}
}
}
}
return transitionPosition;
}
ITextPointer ITextContainer.CreateDynamicTextPointer(StaticTextPointer position, LogicalDirection direction)
{
return ((ITextPointer)position.Handle0).CreatePointer(direction);
}
TextPointerContext ITextContainer.GetPointerContext(StaticTextPointer pointer, LogicalDirection direction)
{
return ((ITextPointer)pointer.Handle0).GetPointerContext(direction);
}
int ITextContainer.GetOffsetToPosition(StaticTextPointer position1, StaticTextPointer position2)
{
return ((ITextPointer)position1.Handle0).GetOffsetToPosition((ITextPointer)position2.Handle0);
}
/// <summary>
/// Fetch the next run at element end edge position.
/// ElementEndEdge; we can have 2 possibilities:
/// (1) Close edge of element associated with the text paragraph,
/// create synthetic LineBreak run to end the current line.
/// (2) End of inline element, hide CloseEdge character and continue
/// </summary>
/// <param name="position"></param>
/// Position in current text array
protected TextRun HandleElementEndEdge(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementEnd, "TextPointer does not point to element end edge.");
TextRun run;
if (position.Parent == _paraClient.Paragraph.Element)
{
// (1) Close edge of element associated with the text paragraph,
// create synthetic LineBreak run to end the current line.
run = new ParagraphBreakRun(_syntheticCharacterLength, PTS.FSFLRES.fsflrEndOfParagraph);
}
else
{
TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Debug.Assert(element != null, "Element should be here.");
Inline inline = (Inline) element;
DependencyObject parent = inline.Parent;
FlowDirection parentFlowDirection = inline.FlowDirection;
if(parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (inline.FlowDirection != parentFlowDirection)
{
run = new TextEndOfSegment(_elementEdgeCharacterLength);
}
else
{
TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (textDecorations == null || textDecorations.Count == 0)
{
// (2) End of inline element, hide CloseEdge character and continue
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
run = new TextEndOfSegment(_elementEdgeCharacterLength);
}
}
}
return run;
}
int ITextContainer.GetTextInRun(StaticTextPointer position, LogicalDirection direction, char[] textBuffer, int startIndex, int count)
{
return ((ITextPointer)position.Handle0).GetTextInRun(direction, textBuffer, startIndex, count);
}
//-------------------------------------------------------------------
//
// Protected Methods
//
//-------------------------------------------------------------------
#region Protected Methods
/// <summary>
/// Fetch the next run at text position.
/// </summary>
/// <param name="position">
/// Current position in text array
/// </param>
/// <returns></returns>
protected TextRun HandleText(StaticTextPointer position)
{
DependencyObject element;
StaticTextPointer endOfRunPosition;
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.Text, "TextPointer does not point to characters.");
if (position.Parent != null)
{
element = position.Parent;
}
else
{
element = _paraClient.Paragraph.Element;
}
// Extract the aggregated properties into something that the textrun can use.
//
TextProperties textProps = new TextProperties(element, position, false /* inline objects */, true /* get background */);
// Calculate the end of the run by finding either:
// a) the next intersection of highlight ranges, or
// b) the natural end of this textrun
endOfRunPosition = position.TextContainer.Highlights.GetNextPropertyChangePosition(position, LogicalDirection.Forward);
// Clamp the text run at an arbitrary limit, so we don't make
// an unbounded allocation.
if (position.GetOffsetToPosition(endOfRunPosition) > 4096)
{
endOfRunPosition = position.CreatePointer(4096);
}
// Get character buffer for the text run.
char[] textBuffer = new char[position.GetOffsetToPosition(endOfRunPosition)];
// Copy characters from text run into buffer. Note the actual number of characters copied,
// which may be different than the buffer's length. Buffer length only specifies the maximum
// number of characters
int charactersCopied = position.GetTextInRun(LogicalDirection.Forward, textBuffer, 0, textBuffer.Length);
// Create text run using the actual number of characters copied
return new TextCharacters(textBuffer, 0, charactersCopied, textProps);
}
int ITextPointer.CompareTo(StaticTextPointer position)
{
// There is single position in the container.
return 0;
}
