public void ExecuteSelectionOperation(HtmlEditorSelectionOperation op)
{
//suspend selection change events while the real HTML selection is temporarily adjusted
//to include the smart content element while the selection operation executes.
_editorComponentContext.BeginSelectionChange();
try
{
IHTMLDocument2 document = (IHTMLDocument2)HTMLElement.document;
MarkupRange elementRange = CreateElementClingMarkupRange();
MarkupRange insertionRange = CreateSelectionBoundaryMarkupRange();
elementRange.ToTextRange().select();
op(this);
//reset the selection
if (elementRange.Start.Positioned && elementRange.End.Positioned)
{
document.selection.empty();
_editorComponentContext.Selection = this;
}
else
{
insertionRange.ToTextRange().select();
}
}
finally
{
_editorComponentContext.EndSelectionChange();
}
}
protected static ContentSelection SelectElementCore(IHtmlEditorComponentContext editorComponentContext, IHTMLElement e, ContentSelection smartContentSelection)
{
Debug.Assert(e.sourceIndex > -1, "Cannot select an unpositioned element");
if (e.sourceIndex > -1) //avoid unhandled exception reported by bug 291968
{
//suspend selection change events while the selection object is replaced
editorComponentContext.BeginSelectionChange();
try
{
//clear the DOM selection so that whatever is currently selected gets unselected.
editorComponentContext.EmptySelection();
//select the newly smart content element
editorComponentContext.Selection = smartContentSelection;
return(smartContentSelection);
}
finally
{
editorComponentContext.EndSelectionChange();
}
}
return(null);
}
protected static ContentSelection SelectElementCore(IHtmlEditorComponentContext editorComponentContext, IHTMLElement e, ContentSelection smartContentSelection)
{
Debug.Assert(e.sourceIndex > -1, "Cannot select an unpositioned element");
if (e.sourceIndex > -1) //avoid unhandled exception reported by bug 291968
{
//suspend selection change events while the selection object is replaced
editorComponentContext.BeginSelectionChange();
try
{
//clear the DOM selection so that whatever is currently selected gets unselected.
editorComponentContext.EmptySelection();
//select the newly smart content element
editorComponentContext.Selection = smartContentSelection;
return smartContentSelection;
}
finally
{
editorComponentContext.EndSelectionChange();
}
}
return null;
}
