private static void CollapseProjectHierarchyItems(Project project, ISet <VsHierarchyItem> ignoredHierarcyItems)
{
Debug.Assert(ThreadHelper.CheckAccess());
VsHierarchyItem projectHierarchyItem = GetHierarchyItemForProject(project);
IVsUIHierarchyWindow solutionExplorerWindow = GetSolutionExplorerHierarchyWindow();
if (solutionExplorerWindow == null)
{
// If the solution explorer is collapsed since opening VS, this value is null. In such a case, simply exit early.
return;
}
// processCallback return values:
// 0 continue,
// 1 don't recurse into,
// -1 stop
projectHierarchyItem.WalkDepthFirst(
fVisible: true,
processCallback:
(VsHierarchyItem currentHierarchyItem, object callerObject, out object newCallerObject) =>
{
newCallerObject = null;
if (!ignoredHierarcyItems.Contains(currentHierarchyItem))
{
CollapseVsHierarchyItem(currentHierarchyItem, solutionExplorerWindow);
}
return(0);
},
callerObject: null);
}
private static ICollection <VsHierarchyItem> GetExpandedProjectHierarchyItems(Project project)
{
Debug.Assert(ThreadHelper.CheckAccess());
VsHierarchyItem projectHierarchyItem = GetHierarchyItemForProject(project);
IVsUIHierarchyWindow solutionExplorerWindow = GetSolutionExplorerHierarchyWindow();
if (solutionExplorerWindow == null)
{
// If the solution explorer is collapsed since opening VS, this value is null. In such a case, simply exit early.
return(new VsHierarchyItem[0]);
}
var expandedItems = new List <VsHierarchyItem>();
// processCallback return values:
// 0 continue,
// 1 don't recurse into,
// -1 stop
projectHierarchyItem.WalkDepthFirst(
fVisible: true,
processCallback:
(VsHierarchyItem vsItem, object callerObject, out object newCallerObject) =>
{
newCallerObject = null;
if (IsVsHierarchyItemExpanded(vsItem, solutionExplorerWindow))
{
expandedItems.Add(vsItem);
}
return(0);
},
callerObject: null);
return(expandedItems);
}