/// <summary>
/// Will use the Wpf apis to select a range of code (can handle single points as well)
/// </summary>
/// <param name="selection"></param>
/// <param name="focus">if True, focus the editor</param>
/// <returns></returns>
public bool SelectRange(EditorSelection selection, bool?focus)
{
ThreadHelper.ThrowIfNotOnUIThread();
try {
if (WpfTextView == null || selection == null)
{
return(false);
}
var range = new Range()
{
Start = selection.Start, End = selection.End
};
string log = "";
var rangeLines = WpfTextView.GetLinesFromRange(range.Start.Line, range.End.Line);
if (rangeLines != null)
{
WpfTextView.Selection.Clear();
VirtualSnapshotPoint anchorPoint;
VirtualSnapshotPoint activePoint;
var startPoint = rangeLines.Item1.Extent.Start + range.Start.Character;
if (range.IsPoint())
{
anchorPoint = new VirtualSnapshotPoint(new SnapshotPoint(WpfTextView.TextSnapshot, startPoint));
activePoint = new VirtualSnapshotPoint(new SnapshotPoint(WpfTextView.TextSnapshot, startPoint));
}
else
{
int endPosition = rangeLines.Item2.Extent.End;
if (range.End.Character != int.MaxValue && rangeLines.Item2.Extent.Start + range.End.Character < endPosition)
{
endPosition = rangeLines.Item2.Extent.Start + range.End.Character;
}
anchorPoint = new VirtualSnapshotPoint(new SnapshotPoint(WpfTextView.TextSnapshot, startPoint));
activePoint = new VirtualSnapshotPoint(new SnapshotPoint(WpfTextView.TextSnapshot, endPosition));
}
WpfTextView.Selection.Select(anchorPoint, activePoint);
log += $"Selecting {nameof(FileName)}={FileName} From {anchorPoint} to {activePoint}";
var span = new SnapshotSpan(WpfTextView.TextSnapshot, Span.FromBounds(rangeLines.Item1.Start, rangeLines.Item2.End));
WpfTextView.ViewScroller.EnsureSpanVisible(span, EnsureSpanVisibleOptions.MinimumScroll);
log += $", ensuring Visible";
if (selection.Cursor != null)
{
var caretLine = WpfTextView.GetLine(selection.Cursor);
if (caretLine != null)
{
int startPosition = caretLine.Extent.Start;
if (selection.Cursor.Character != int.MaxValue && caretLine.Extent.Start + selection.Cursor.Character < caretLine.Extent.End)
{
startPosition = caretLine.Extent.Start + selection.Cursor.Character;
}
WpfTextView.Caret.MoveTo(new VirtualSnapshotPoint(new SnapshotPoint(WpfTextView.TextSnapshot, startPosition)));
WpfTextView.Caret.EnsureVisible();
log += $", caret to ActivePoint={activePoint.Position}";
}
}
}
if (focus == true)
{
WpfTextView.VisualElement.Focus();
}
log += $", focus={focus}";
Log.Verbose(log);
return(true);
}
catch (Exception ex) {
Log.Warning(ex, $"{nameof(SelectRange)} Range={@selection} Focus={focus}");
}
return(false);
}
public static Range ToRange(this EditorSelection selection) => selection != null?selection.ToRange() : null;
public EditorSelectRangeRequest(Uri uri, EditorSelection selection, bool?preserveFocus)
{
Uri = uri.ToString();
Selection = selection;
PreserveFocus = preserveFocus;
}