/// <summary>
/// Creates a new Span instance covering existing content.
/// </summary>
/// <param name="start">
/// Start position of the new Span.
/// </param>
/// <param name="end">
/// End position of the new Span.
/// </param>
/// <remarks>
/// start and end must both be parented by the same Paragraph, otherwise
/// the method will raise an ArgumentException.
/// </remarks>
public Span(TextPointer start, TextPointer end)
{
if (start == null)
{
throw new ArgumentNullException("start");
}
if (end == null)
{
throw new ArgumentNullException("start");
}
if (start.TextContainer != end.TextContainer)
{
throw new ArgumentException(SR.Get(SRID.InDifferentTextContainers, "start", "end"));
}
if (start.CompareTo(end) > 0)
{
throw new ArgumentException(SR.Get(SRID.BadTextPositionOrder, "start", "end"));
}
start.TextContainer.BeginChange();
try
{
start = TextRangeEditTables.EnsureInsertionPosition(start);
Invariant.Assert(start.Parent is Run);
end = TextRangeEditTables.EnsureInsertionPosition(end);
Invariant.Assert(end.Parent is Run);
if (start.Paragraph != end.Paragraph)
{
throw new ArgumentException(SR.Get(SRID.InDifferentParagraphs, "start", "end"));
}
// If start or end positions have a Hyperlink ancestor, we cannot split them.
Inline nonMergeableAncestor;
if ((nonMergeableAncestor = start.GetNonMergeableInlineAncestor()) != null)
{
throw new InvalidOperationException(SR.Get(SRID.TextSchema_CannotSplitElement, nonMergeableAncestor.GetType().Name));
}
if ((nonMergeableAncestor = end.GetNonMergeableInlineAncestor()) != null)
{
throw new InvalidOperationException(SR.Get(SRID.TextSchema_CannotSplitElement, nonMergeableAncestor.GetType().Name));
}
TextElement commonAncestor = TextElement.GetCommonAncestor((TextElement)start.Parent, (TextElement)end.Parent);
while (start.Parent != commonAncestor)
{
start = SplitElement(start);
}
while (end.Parent != commonAncestor)
{
end = SplitElement(end);
}
if (start.Parent is Run)
{
start = SplitElement(start);
}
if (end.Parent is Run)
{
end = SplitElement(end);
}
Invariant.Assert(start.Parent == end.Parent);
Invariant.Assert(TextSchema.IsValidChild(/*position*/ start, /*childType*/ typeof(Span)));
this.Reposition(start, end);
}
finally
{
start.TextContainer.EndChange();
}
}
/// <summary>Initializes a new instance of the <see cref="T:System.Windows.Documents.Span" /> class, taking two <see cref="T:System.Windows.Documents.TextPointer" /> objects that indicate the beginning and end of a selection of content that the new <see cref="T:System.Windows.Documents.Span" /> will contain.</summary>
/// <param name="start">A <see cref="T:System.Windows.Documents.TextPointer" /> that indicates the beginning of a selection of content that the new <see cref="T:System.Windows.Documents.Span" /> will contain.</param>
/// <param name="end">A <see cref="T:System.Windows.Documents.TextPointer" /> that indicates the end of a selection of content that the new <see cref="T:System.Windows.Documents.Span" /> will contain.</param>
/// <exception cref="T:System.ArgumentNullException">Raised when <paramref name="start" /> or <paramref name="end" /> is null.</exception>
/// <exception cref="T:System.ArgumentException">Raised when <paramref name="start" /> and <paramref name="end" /> do not resolve to a range of content suitable for enclosure by a <see cref="T:System.Windows.Documents.Span" /> element; for example, if <paramref name="start" /> and <paramref name="end" /> indicate positions in different paragraphs.</exception>
// Token: 0x06003543 RID: 13635 RVA: 0x000F1218 File Offset: 0x000EF418
public Span(TextPointer start, TextPointer end)
{
if (start == null)
{
throw new ArgumentNullException("start");
}
if (end == null)
{
throw new ArgumentNullException("start");
}
if (start.TextContainer != end.TextContainer)
{
throw new ArgumentException(SR.Get("InDifferentTextContainers", new object[]
{
"start",
"end"
}));
}
if (start.CompareTo(end) > 0)
{
throw new ArgumentException(SR.Get("BadTextPositionOrder", new object[]
{
"start",
"end"
}));
}
start.TextContainer.BeginChange();
try
{
start = TextRangeEditTables.EnsureInsertionPosition(start);
Invariant.Assert(start.Parent is Run);
end = TextRangeEditTables.EnsureInsertionPosition(end);
Invariant.Assert(end.Parent is Run);
if (start.Paragraph != end.Paragraph)
{
throw new ArgumentException(SR.Get("InDifferentParagraphs", new object[]
{
"start",
"end"
}));
}
Inline nonMergeableInlineAncestor;
if ((nonMergeableInlineAncestor = start.GetNonMergeableInlineAncestor()) != null)
{
throw new InvalidOperationException(SR.Get("TextSchema_CannotSplitElement", new object[]
{
nonMergeableInlineAncestor.GetType().Name
}));
}
if ((nonMergeableInlineAncestor = end.GetNonMergeableInlineAncestor()) != null)
{
throw new InvalidOperationException(SR.Get("TextSchema_CannotSplitElement", new object[]
{
nonMergeableInlineAncestor.GetType().Name
}));
}
TextElement commonAncestor = TextElement.GetCommonAncestor((TextElement)start.Parent, (TextElement)end.Parent);
while (start.Parent != commonAncestor)
{
start = this.SplitElement(start);
}
while (end.Parent != commonAncestor)
{
end = this.SplitElement(end);
}
if (start.Parent is Run)
{
start = this.SplitElement(start);
}
if (end.Parent is Run)
{
end = this.SplitElement(end);
}
Invariant.Assert(start.Parent == end.Parent);
Invariant.Assert(TextSchema.IsValidChild(start, typeof(Span)));
base.Reposition(start, end);
}
finally
{
start.TextContainer.EndChange();
}
}
