private void CollapseAll()
{
ITextSnapshot snapshot = _textView.TextBuffer.CurrentSnapshot;
SnapshotSpan snapshotSpan = new SnapshotSpan(snapshot, 0, snapshot.Length);
OutliningManager.CollapseAll(snapshotSpan, (collapsible => true));
}
public void OpenFold_AdhocPartialLine()
{
Create("cat dog", "fish tree");
_adhocOutliner.CreateOutliningRegion(_textBuffer.GetLineSpan(0, 3, 4), "", "");
_outliningeManager.CollapseAll(_textBuffer.GetLine(0).ExtentIncludingLineBreak, _ => true);
Assert.Equal("cat", _visualBuffer.GetLine(0).GetText());
_foldManager.OpenFold(_textView.GetPoint(0), 1);
Assert.Equal("cat dog", _visualBuffer.GetLine(0).GetText());
}
private void OutliningManager_RegionsChanged(object sender, RegionsChangedEventArgs e)
{
const string xmlDocCollapsedFormStart = "/// <summary>";
IOutliningManager outliningManager = sender as IOutliningManager;
outliningManager.CollapseAll(e.AffectedSpan, c => c?.CollapsedForm?.ToString()?.StartsWith(xmlDocCollapsedFormStart) ?? false && !c.IsCollapsed && c.IsCollapsible);
//Unsubscribe from RegionsChanged after initial change
outliningManager.RegionsChanged -= OutliningManager_RegionsChanged;
}
private void OutliningManagerOnRegionsChanged(object sender, RegionsChangedEventArgs args)
{
outliningManager.RegionsChanged -= OutliningManagerOnRegionsChanged;
var currentSnapshot = textView.TextBuffer.CurrentSnapshot;
var span = new SnapshotSpan(currentSnapshot, 0, currentSnapshot.Length);
if (settings.BehaviorMode == BehaviorMode.ExpandAll || settings.BehaviorMode == BehaviorMode.PreventCollapse)
{
outliningManager.ExpandAll(span, c => c.IsCollapsed && IsRegion(c));
}
else if (settings.BehaviorMode == BehaviorMode.CollapseAll)
{
outliningManager.CollapseAll(span, c => !c.IsCollapsed && IsRegion(c));
}
}
// Re-collapse the spans
public void CollapseRegions()
{
if (_outliningManager == null || _textView == null || _collapsedSpans == null)
{
return;
}
ITextSnapshot snapshot = _textView.TextBuffer.CurrentSnapshot;
// Get a span that includes all collapsed regions
int min = Int32.MinValue;
int max = Int32.MinValue;
foreach (Tuple <Span, IOutliningRegionTag> span in _collapsedSpans)
{
if (min == Int32.MinValue || span.Item1.Start < min)
{
min = span.Item1.Start;
}
if (max == Int32.MinValue || span.Item1.End > max)
{
max = span.Item1.End;
}
}
// avoid running if there were no spans
if (min == Int32.MinValue)
{
Debug.Fail("No spans");
return;
}
// span containing all collapsed regions
SnapshotSpan entireSpan = new SnapshotSpan(snapshot, min, max - min);
// regions have not yet been tagged by the language service during the undo/redo and
// so we need to tag them again in order to do the collapse
SimpleTagger <IOutliningRegionTag> simpleTagger =
_textView.TextBuffer.Properties.GetOrCreateSingletonProperty <SimpleTagger <IOutliningRegionTag> >(() => new SimpleTagger <IOutliningRegionTag>(_textView.TextBuffer));
Debug.Assert(!simpleTagger.GetTaggedSpans(entireSpan).GetEnumerator().MoveNext(),
"The code is not expecting the regions to be tagged already. Verify that redundant tagging is not occurring.");
List <Span> toCollapse = new List <Span>();
// tag the regions and add them to the list to be bulk collapsed
foreach (Tuple <Span, IOutliningRegionTag> span in _collapsedSpans)
{
ITrackingSpan tspan = snapshot.CreateTrackingSpan(span.Item1, SpanTrackingMode.EdgeExclusive);
simpleTagger.CreateTagSpan(tspan, span.Item2);
toCollapse.Add(span.Item1);
}
// Disable the OutliningUndoManager to avoid it adding our collapse to the undo stack as an expand
bool disableOutliningUndo = _textView.Options.IsOutliningUndoEnabled();
try
{
if (disableOutliningUndo)
{
_textView.Options.SetOptionValue(DefaultTextViewOptions.OutliningUndoOptionId, false);
}
// Do the collapse
_outliningManager.CollapseAll(entireSpan, colSpan => (!colSpan.IsCollapsed && toCollapse.Contains(colSpan.Extent.GetSpan(snapshot))));
}
finally
{
if (disableOutliningUndo)
{
_textView.Options.SetOptionValue(DefaultTextViewOptions.OutliningUndoOptionId, true);
}
}
}
