//-------------------------------------------------------------------
//
// Private Methods
//
//-------------------------------------------------------------------
#region Private Methods
// ------------------------------------------------------------------
// Determine paragraph type at the current tree position and create it.
// If going out of scope, return null.
//
// Paragraph type is determined using following:
// (1) if textPointer points to Text, TextParagraph
// (2) if textPointer points to ElementEnd (end of TextElement):
// * if the same as Owner, NULL if fEmptyOk, TextPara otherwise
// (3) if textPointer points to ElementStart (start of TextElement):
// * if block, ContainerParagraph
// * if inline, TextParagraph
// (4) if textPointer points to UIElement:
// * if block, UIElementParagraph
// * if inline, TextParagraph
// (5) if textPointer points to TextContainer.End, NULL
// ------------------------------------------------------------------
protected virtual BaseParagraph GetParagraph(ITextPointer textPointer, bool fEmptyOk)
{
BaseParagraph paragraph = null;
switch (textPointer.GetPointerContext(LogicalDirection.Forward))
{
case TextPointerContext.Text:
// Text paragraph
// WORKAROUND FOR SCHEMA VALIDATION
if(textPointer.TextContainer.Start.CompareTo(textPointer) > 0)
{
if(!(Element is TextElement) || ((TextElement)Element).ContentStart != textPointer)
{
throw new InvalidOperationException(SR.Get(SRID.TextSchema_TextIsNotAllowedInThisContext, Element.GetType().Name));
}
}
paragraph = new TextParagraph(Element, StructuralCache);
break;
case TextPointerContext.ElementEnd:
// The end of TextElement
Invariant.Assert(textPointer is TextPointer);
Invariant.Assert(Element == ((TextPointer)textPointer).Parent);
if(!fEmptyOk)
{
paragraph = new TextParagraph(Element, StructuralCache);
}
break;
case TextPointerContext.ElementStart:
// The beginning of TextElement
// * if block, ContainerParagraph
// * if inline, TextParagraph
Debug.Assert(textPointer is TextPointer);
TextElement element = ((TextPointer)textPointer).GetAdjacentElementFromOuterPosition(LogicalDirection.Forward);
if (element is List)
{
paragraph = new ListParagraph(element, StructuralCache);
}
else if (element is Table)
{
paragraph = new TableParagraph(element, StructuralCache);
}
else if (element is BlockUIContainer)
{
paragraph = new UIElementParagraph(element, StructuralCache);
}
else if (element is Block || element is ListItem)
{
paragraph = new ContainerParagraph(element, StructuralCache);
}
else if (element is Inline) // Note this includes AnchoredBlocks - intentionally
{
paragraph = new TextParagraph(Element, StructuralCache);
}
else
{
// The only remaining TextElement classes are: TableRowGroup, TableRow, TableCell
// which should never go here.
Invariant.Assert(false);
}
break;
case TextPointerContext.EmbeddedElement:
// Embedded UIElements are always part of TextParagraph.
// There is no possibility to make UIElement a block.
paragraph = new TextParagraph(Element, StructuralCache);
break;
case TextPointerContext.None:
// End of tree case.
Invariant.Assert(textPointer.CompareTo(textPointer.TextContainer.End) == 0);
if (!fEmptyOk)
{
paragraph = new TextParagraph(Element, StructuralCache);
}
break;
}
if (paragraph != null)
{
StructuralCache.CurrentFormatContext.DependentMax = (TextPointer) textPointer;
}
return paragraph;
}
// Token: 0x060067A3 RID: 26531 RVA: 0x001D08E0 File Offset: 0x001CEAE0
protected virtual BaseParagraph GetParagraph(ITextPointer textPointer, bool fEmptyOk)
{
BaseParagraph baseParagraph = null;
switch (textPointer.GetPointerContext(LogicalDirection.Forward))
{
case TextPointerContext.None:
Invariant.Assert(textPointer.CompareTo(textPointer.TextContainer.End) == 0);
if (!fEmptyOk)
{
baseParagraph = new TextParagraph(base.Element, base.StructuralCache);
}
break;
case TextPointerContext.Text:
if (textPointer.TextContainer.Start.CompareTo(textPointer) > 0 && (!(base.Element is TextElement) || ((TextElement)base.Element).ContentStart != textPointer))
{
throw new InvalidOperationException(SR.Get("TextSchema_TextIsNotAllowedInThisContext", new object[]
{
base.Element.GetType().Name
}));
}
baseParagraph = new TextParagraph(base.Element, base.StructuralCache);
break;
case TextPointerContext.EmbeddedElement:
baseParagraph = new TextParagraph(base.Element, base.StructuralCache);
break;
case TextPointerContext.ElementStart:
{
TextElement adjacentElementFromOuterPosition = ((TextPointer)textPointer).GetAdjacentElementFromOuterPosition(LogicalDirection.Forward);
if (adjacentElementFromOuterPosition is List)
{
baseParagraph = new ListParagraph(adjacentElementFromOuterPosition, base.StructuralCache);
}
else if (adjacentElementFromOuterPosition is Table)
{
baseParagraph = new TableParagraph(adjacentElementFromOuterPosition, base.StructuralCache);
}
else if (adjacentElementFromOuterPosition is BlockUIContainer)
{
baseParagraph = new UIElementParagraph(adjacentElementFromOuterPosition, base.StructuralCache);
}
else if (adjacentElementFromOuterPosition is Block || adjacentElementFromOuterPosition is ListItem)
{
baseParagraph = new ContainerParagraph(adjacentElementFromOuterPosition, base.StructuralCache);
}
else if (adjacentElementFromOuterPosition is Inline)
{
baseParagraph = new TextParagraph(base.Element, base.StructuralCache);
}
else
{
Invariant.Assert(false);
}
break;
}
case TextPointerContext.ElementEnd:
Invariant.Assert(textPointer is TextPointer);
Invariant.Assert(base.Element == ((TextPointer)textPointer).Parent);
if (!fEmptyOk)
{
baseParagraph = new TextParagraph(base.Element, base.StructuralCache);
}
break;
}
if (baseParagraph != null)
{
base.StructuralCache.CurrentFormatContext.DependentMax = (TextPointer)textPointer;
}
return(baseParagraph);
}