public void Inactivate()
{
this.textView.ViewportHeightChanged -= OnViewportHeightChanged;
this.textView.Selection.SelectionChanged -= OnSelectionChanged;
this.textView.LayoutChanged -= OnLayoutChanged;
this.treeView.Items.Clear();
var tagger = CurrentTagMarkerProvider.GetCurrentTagMarkerForView(this.textView);
Debug.Assert(tagger != null);
tagger.RemoveTagSpans(s => true);
}
private void UpdateVisuals()
{
var tagger = CurrentTagMarkerProvider.GetCurrentTagMarkerForView(this.textView);
Debug.Assert(tagger != null);
tagger.RemoveTagSpans(s => true);
this.treeView.Items.Clear();
if (this.textView.Selection.SelectedSpans.Count == 0)
{
return;
}
// Don't do any work if we aren't visible
if (ActualHeight < 5)
{
return;
}
Dictionary <Type, List <IMappingTagSpan <ITag> > > tagSpansByType = new Dictionary <Type, List <IMappingTagSpan <ITag> > >();
foreach (var tagSpan in this.aggregator.GetTags(this.textView.Selection.SelectedSpans))
{
Type type = tagSpan.Tag.GetType();
// Ignore our own tags.
if (type == typeof(CurrentTagMarker))
{
continue;
}
if (!tagSpansByType.ContainsKey(type))
{
tagSpansByType[type] = new List <IMappingTagSpan <ITag> >();
}
tagSpansByType[type].Add(tagSpan);
}
foreach (var type in tagSpansByType.Keys.OrderBy(type => type.Name))
{
List <IMappingTagSpan <ITag> > tagSpans = tagSpansByType[type];
TreeViewItem typeItem = new TreeViewItem()
{
Header = string.Format("{0} ({1})", type.Name, tagSpans.Count)
};
List <SnapshotSpan> snapshotSpans = new List <SnapshotSpan>();
foreach (var tagSpan in tagSpans)
{
TreeViewItem tagSpanItem = new TreeViewItem();
var spansInView = tagSpan.Span.GetSpans(this.textView.TextSnapshot);
// This should never happen, since we asked for tags over the selection, which
// we know is in the view.
if (spansInView.Count == 0)
{
continue;
}
var snapshotSpan = new SnapshotSpan(spansInView[0].Start, spansInView[spansInView.Count - 1].End);
snapshotSpans.Add(snapshotSpan);
object toolTipContent;
string displayString = DisplayStringForTag(tagSpan.Tag, out toolTipContent);
if (displayString != null)
{
tagSpanItem.Header = string.Format("Tag: {0}, Span: {1}", displayString, snapshotSpan.Span);
if (toolTipContent != null)
{
tagSpanItem.ToolTip = toolTipContent;
}
}
else
{
tagSpanItem.Header = string.Format("Span: {0}", snapshotSpan.Span);
}
tagSpanItem.Selected += (sender, args) =>
{
tagger.RemoveTagSpans(s => true);
tagger.CreateTagSpan(snapshotSpan.Snapshot.CreateTrackingSpan(snapshotSpan, SpanTrackingMode.EdgeExclusive), new CurrentTagMarker());
args.Handled = true;
};
typeItem.Items.Add(tagSpanItem);
}
typeItem.Selected += (sender, args) =>
{
tagger.RemoveTagSpans(s => true);
foreach (var snapshotSpan in snapshotSpans)
{
tagger.CreateTagSpan(snapshotSpan.Snapshot.CreateTrackingSpan(snapshotSpan, SpanTrackingMode.EdgeExclusive), new CurrentTagMarker());
}
};
this.treeView.Items.Add(typeItem);
}
}