//</Snippet22>
//<Snippet23>
public void Add(SnapshotSpan span, string author, string text)
{
if (span.Length == 0)
{
throw new ArgumentOutOfRangeException("span");
}
if (author == null)
{
throw new ArgumentNullException("author");
}
if (text == null)
{
throw new ArgumentNullException("text");
}
//Create a comment adornment given the span, author and text.
CommentAdornment comment = new CommentAdornment(span, author, text);
//Add it to the list of comments.
this.comments.Add(comment);
//Raise the changed event.
EventHandler <CommentsChangedEventArgs> commentsChanged = this.CommentsChanged;
if (commentsChanged != null)
{
commentsChanged(this, new CommentsChangedEventArgs(comment, null));
}
}
//</Snippet33>
//<Snippet34>
private void OnLayoutChanged(object sender, TextViewLayoutChangedEventArgs e)
{
//Get all of the comments that intersect any of the new or reformatted lines of text.
List <CommentAdornment> newComments = new List <CommentAdornment>();
//The event args contain a list of modified lines and a NormalizedSpanCollection of the spans of the modified lines.
//Use the latter to find the comments that intersect the new or reformatted lines of text.
foreach (Span span in e.NewOrReformattedSpans)
{
newComments.AddRange(this.provider.GetComments(new SnapshotSpan(this.view.TextSnapshot, span)));
}
//It is possible to get duplicates in this list if a comment spanned 3 lines, and the first and last lines were modified but the middle line was not.
//Sort the list and skip duplicates.
newComments.Sort(delegate(CommentAdornment a, CommentAdornment b) { return(a.GetHashCode().CompareTo(b.GetHashCode())); });
CommentAdornment lastComment = null;
foreach (CommentAdornment comment in newComments)
{
if (comment != lastComment)
{
lastComment = comment;
this.DrawComment(comment);
}
}
}
//</Snippet34>
//<Snippet35>
private void DrawComment(CommentAdornment comment)
{
SnapshotSpan span = comment.Span.GetSpan(this.view.TextSnapshot);
Geometry g = this.view.TextViewLines.GetMarkerGeometry(span);
if (g != null)
{
//Find the rightmost coordinate of all the lines that intersect the adornment.
double maxRight = 0.0;
foreach (ITextViewLine line in this.view.TextViewLines.GetTextViewLinesIntersectingSpan(span))
{
maxRight = Math.Max(maxRight, line.Right);
}
//Create the visualization.
CommentBlock block = new CommentBlock(maxRight, this.view.ViewportRight, g, comment.Author, comment.Text);
//Add it to the layer.
this.layer.AddAdornment(span, comment, block);
}
}
public CommentsChangedEventArgs(CommentAdornment added, CommentAdornment removed)
{
this.CommentAdded = added;
this.CommentRemoved = removed;
}
