void TryScrollToComment(LayoutElement element)
{
LayoutComment layoutComment = element as LayoutComment;
if (layoutComment == null)
{
layoutComment = element.GetParentByType <LayoutComment>();
}
if (layoutComment != null)
{
Comment comment = layoutComment.GetDocumentComment();
ScrollToPosition(comment.Range.Start);
}
}
protected override void VisitComment(LayoutComment comment)
{
TryAddElementToCollection(comment, ContentDisplayAction.ScrollTo, true);
base.VisitComment(comment);
}
public override void DrawComment(LayoutComment comment)
{
base.DrawComment(comment);
HighlightElement(comment);
}
void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
if (!(e.Node.IsSelected) || e.Node.Tag == null)
{
return;
}
// Rebuild the tree if required.
rebuild = true;
richEditControl1.Document.ChangeActiveDocument(richEditControl1.Document);
LayoutElement element = layoutTreeDictionary[e.Node];
RangedLayoutElement rangedElement = element as RangedLayoutElement;
// Select a range or scroll to a document position, according to the type of the layout element.
if ((ContentDisplayAction)e.Node.Tag == ContentDisplayAction.ScrollTo)
{
LayoutPage page = element.GetParentByType <LayoutPage>();
LayoutPageArea nearestPageArea = page.PageAreas[0];
if ((element.Type == LayoutType.Header) || (element.GetParentByType <LayoutHeader>() != null))
{
ScrollToPosition(nearestPageArea.Range.Start);
}
if ((element.Type == LayoutType.Footer) || (element.GetParentByType <LayoutFooter>() != null))
{
ScrollToPosition(nearestPageArea.Range.Start + nearestPageArea.Range.Length);
}
LayoutFloatingObject layoutFloatingObject = element as LayoutFloatingObject;
if (layoutFloatingObject != null)
{
FloatingObjectAnchorBox anchor = layoutFloatingObject.AnchorBox;
ScrollToPosition(anchor.Range.Start);
richEditControl1.Document.Selection = richEditControl1.Document.CreateRange(anchor.Range.Start, anchor.Range.Length);
}
LayoutComment layoutComment = element as LayoutComment;
if (layoutComment != null)
{
Comment comment = layoutComment.GetDocumentComment();
ScrollToPosition(comment.Range.Start.ToInt());
}
LayoutTextBox textBox = element.GetParentByType <LayoutTextBox>();
if (textBox != null)
{
// Do not rebuild the tree.
rebuild = false;
ScrollToPosition(textBox.AnchorBox.Range.Start);
SubDocument doc = richEditControl1.DocumentLayout.BeginUpdateDocument(textBox);
richEditControl1.Document.ChangeActiveDocument(doc);
richEditControl1.Document.Selection = doc.CreateRange(rangedElement.Range.Start, rangedElement.Range.Length);
richEditControl1.DocumentLayout.EndUpdateDocument(doc);
}
}
else
{
if (rangedElement == null)
{
return;
}
ScrollToPosition(rangedElement.Range.Start);
richEditControl1.Document.Selection = richEditControl1.Document.CreateRange(rangedElement.Range.Start, rangedElement.Range.Length);
}
}
protected override void VisitComment(LayoutComment comment)
{
AddTreeNode(comment, ContentDisplayAction.ScrollTo);
base.VisitComment(comment);
}
