internal IEnumerable <ICollapsible> GetCollapsiblesForCurrentSelection(IOutliningManager outliningManager, ITextView textView)
{
if (outliningManager == null)
{
return(null);
}
// Try for all collapsibles which are contained within the selection span
SnapshotSpan selectionSnapshotSpan = textView.Selection.StreamSelectionSpan.SnapshotSpan;
ITextSnapshot selectionSnapshot = selectionSnapshotSpan.Snapshot;
var intersectingCollapsibles = outliningManager.GetAllRegions(selectionSnapshotSpan);
var filteredCollapsibles = intersectingCollapsibles.Where(collapsible => selectionSnapshotSpan.Contains(collapsible.Extent.GetSpan(selectionSnapshot)));
var tornoffCollapsibles = GetTornoffCollapsibles(filteredCollapsibles);
if (tornoffCollapsibles != null)
{
return(tornoffCollapsibles);
}
// Try for innermost collapsibles which intersect and start within the selection span
filteredCollapsibles = intersectingCollapsibles.Where(collapsible => selectionSnapshotSpan.Contains(collapsible.Extent.GetSpan(selectionSnapshot).Start));
tornoffCollapsibles = GetInnermostCollapsibles(selectionSnapshot, filteredCollapsibles);
if (tornoffCollapsibles != null)
{
return(tornoffCollapsibles);
}
// Try for all collapsibles which are contained within the selection's first line
ITextSnapshotLine selectionStartLine = selectionSnapshot.GetLineFromPosition(selectionSnapshotSpan.Start);
SnapshotSpan selectionFirstLine = new SnapshotSpan(selectionSnapshot, selectionStartLine.Start, selectionStartLine.Length);
intersectingCollapsibles = outliningManager.GetAllRegions(selectionFirstLine);
filteredCollapsibles = intersectingCollapsibles.Where(collapsible => selectionFirstLine.Contains(collapsible.Extent.GetSpan(selectionSnapshot)));
tornoffCollapsibles = GetTornoffCollapsibles(filteredCollapsibles);
if (tornoffCollapsibles != null)
{
return(tornoffCollapsibles);
}
// Try for innermost collapsibles which intersect and start within the selection's first line
filteredCollapsibles = intersectingCollapsibles.Where(collapsible => selectionFirstLine.Contains(collapsible.Extent.GetSpan(selectionSnapshot).Start));
tornoffCollapsibles = GetInnermostCollapsibles(selectionSnapshot, filteredCollapsibles);
if (tornoffCollapsibles != null)
{
return(tornoffCollapsibles);
}
// Try for innermost collapsibles which simply intersect the selection's first line
tornoffCollapsibles = GetInnermostCollapsibles(selectionSnapshot, intersectingCollapsibles);
if (tornoffCollapsibles != null)
{
return(tornoffCollapsibles);
}
return(null);
}
/// <summary>
/// Attempts to find a <see cref="ICollapsible" /> associated with the specified <see
/// cref="IMembers" />.
/// </summary>
/// <param name="item">The IMembers CodeItem.</param>
/// <param name="manager">The outlining manager to get all regions</param>
/// <param name="textView">The textview to find collapsibles in</param>
/// <returns>The <see cref="ICollapsible" /> on the same starting line, otherwise null.</returns>
private static ICollapsible FindCollapsibleFromCodeItem(CodeItem item, IOutliningManager manager, IWpfTextView textView)
{
if (item.Kind == CodeItemKindEnum.ImplementedInterface)
{
return(null);
}
if (item.StartLine > textView.TextBuffer.CurrentSnapshot.LineCount)
{
return(null);
}
try
{
var snapshotLine = textView.TextBuffer.CurrentSnapshot.GetLineFromLineNumber(item.StartLine);
var collapsibles = manager.GetAllRegions(snapshotLine.Extent);
return((from collapsible in collapsibles
let startLine = GetStartLineForCollapsible(collapsible)
where startLine == item.StartLine
select collapsible).FirstOrDefault());
}
catch (ArgumentOutOfRangeException e)
{
LogHelper.Log($"FindCollapsibleFromCodeItem failed for item {item.Name}, exception: {e.Message}");
return(null);
}
catch (ObjectDisposedException e)
{
LogHelper.Log($"FindCollapsibleFromCodeItem failed because of disposed {e.ObjectName}");
return(null);
}
}
public void VsTextViewCreated(IVsTextView textViewAdapter)
{
IComponentModel componentModel = (IComponentModel)ServiceProvider.GlobalProvider.GetService(typeof(SComponentModel));
if (componentModel != null)
{
IOutliningManagerService outliningManagerService = componentModel.GetService <IOutliningManagerService>();
_editorAdaptersFactoryService = componentModel.GetService <IVsEditorAdaptersFactoryService>();
if (outliningManagerService != null)
{
if (textViewAdapter != null && _editorAdaptersFactoryService != null)
{
var textView = _editorAdaptersFactoryService.GetWpfTextView(textViewAdapter);
var snapshot = textView.TextSnapshot;
var snapshotSpan = new Microsoft.VisualStudio.Text.SnapshotSpan(snapshot, new Microsoft.VisualStudio.Text.Span(0, snapshot.Length));
_outliningManager = outliningManagerService.GetOutliningManager(textView);
var regions = _outliningManager.GetAllRegions(snapshotSpan);
foreach (var reg in regions)
{
_outliningManager.TryCollapse(reg);
}
}
}
}
}
/// <summary>
/// Attempts to find a <see cref="ICollapsible" /> associated with the specified <see
/// cref="ICodeItemParent" />.
/// </summary>
/// <param name="parent">The code item parent.</param>
/// <returns>The <see cref="ICollapsible" /> on the same starting line, otherwise null.</returns>
private ICollapsible FindCollapsibleFromCodeItemParent(ICodeItemParent parent)
{
if (_outliningManager == null || _wpfTextView == null)
{
return(null);
}
var snapshotLine = _wpfTextView.TextBuffer.CurrentSnapshot.GetLineFromLineNumber(parent.StartLine);
var collapsibles = _outliningManager.GetAllRegions(snapshotLine.Extent);
return((from collapsible in collapsibles
let startLine = GetStartLineForCollapsible(collapsible)
where startLine == parent.StartLine
select collapsible).FirstOrDefault());
}
/// <summary>
/// Attempts to find a <see cref="ICollapsible" /> associated with the specified <see
/// cref="IMembers" />.
/// </summary>
/// <param name="item">The IMembers CodeItem.</param>
/// <param name="manager">The outlining manager to get all regions</param>
/// <param name="textView">The textview to find collapsibles in</param>
/// <returns>The <see cref="ICollapsible" /> on the same starting line, otherwise null.</returns>
private static ICollapsible FindCollapsibleFromCodeItem(CodeItem item, IOutliningManager manager, IWpfTextView textView)
{
if (item.Kind == CodeItemKindEnum.ImplementedInterface)
{
return(null);
}
if (item.StartLine > textView.TextBuffer.CurrentSnapshot.LineCount)
{
return(null);
}
var snapshotLine = textView.TextBuffer.CurrentSnapshot.GetLineFromLineNumber(item.StartLine);
var collapsibles = manager.GetAllRegions(snapshotLine.Extent);
return((from collapsible in collapsibles
let startLine = GetStartLineForCollapsible(collapsible)
where startLine == item.StartLine
select collapsible).FirstOrDefault());
}
private void ToggleCurrent()
{
var caretPosition = _textView.Caret.Position.BufferPosition;
var snapshot = _textView.TextBuffer.CurrentSnapshot;
var span = new SnapshotSpan(snapshot, new Span(caretPosition, 0));
var regions = OutliningManager.GetAllRegions(span);
// Find innermost one
ICollapsible region = null;
int regionStart = 0;
int regionEnd = snapshot.Length;
foreach (ICollapsible c in regions)
{
int start = c.Extent.GetStartPoint(snapshot);
int end = c.Extent.GetEndPoint(snapshot);
if (start >= regionStart && end < regionEnd)
{
regionStart = start;
regionEnd = end;
region = c;
}
}
if (region != null)
{
if (region.IsCollapsed)
{
OutliningManager.Expand(region as ICollapsed);
}
else
{
OutliningManager.TryCollapse(region);
}
}
}
/// <summary>
/// Attempts to find a <see cref="ICollapsible" /> associated with the specified <see
/// cref="ICodeItemParent" />.
/// </summary>
/// <param name="parent">The code item parent.</param>
/// <returns>The <see cref="ICollapsible" /> on the same starting line, otherwise null.</returns>
private ICollapsible FindCollapsibleFromCodeItemParent(ICodeItemParent parent)
{
if (_outliningManager == null || _wpfTextView == null)
{
return(null);
}
try
{
var snapshotLine = _wpfTextView.TextBuffer.CurrentSnapshot.GetLineFromLineNumber(parent.StartLine);
var collapsibles = _outliningManager.GetAllRegions(snapshotLine.Extent);
return((from collapsible in collapsibles
let startLine = GetStartLineForCollapsible(collapsible)
where startLine == parent.StartLine
select collapsible).FirstOrDefault());
}
catch (Exception ex)
{
OutputWindowHelper.ExceptionWriteLine("Unable to find collapsible from ICodeItemParent", ex);
return(null);
}
}
