private static async Task CollapseProjectHierarchyItemsAsync(EnvDTE.Project project, ISet <VsHierarchyItem> ignoredHierarcyItems)
{
var projectHierarchyItem = await VsHierarchyItem.FromDteProjectAsync(project);
var solutionExplorerWindow = await GetSolutionExplorerHierarchyWindowAsync();
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
await projectHierarchyItem.WalkDepthFirstAsync(
fVisible : true,
processCallbackAsync :
async(VsHierarchyItem currentHierarchyItem, object callerObject) =>
{
if (!ignoredHierarcyItems.Contains(currentHierarchyItem))
{
await CollapseVsHierarchyItemAsync(currentHierarchyItem, solutionExplorerWindow);
}
return(0, null);
},
callerObject : null);
}
private static async Task <ICollection <VsHierarchyItem> > GetExpandedProjectHierarchyItemsAsync(EnvDTE.Project project)
{
var projectHierarchyItem = await VsHierarchyItem.FromDteProjectAsync(project);
var solutionExplorerWindow = await GetSolutionExplorerHierarchyWindowAsync();
if (solutionExplorerWindow == null)
{
// If the solution explorer is collapsed since opening VS, this value is null. In such a case, simply exit early.
return(Array.Empty <VsHierarchyItem>());
}
var expandedItems = new List <VsHierarchyItem>();
await NuGetUIThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
// processCallback return values:
// 0 continue,
// 1 don't recurse into,
// -1 stop
await projectHierarchyItem.WalkDepthFirstAsync(
fVisible : true,
processCallbackAsync :
async(VsHierarchyItem vsItem, object callerObject) =>
{
if (await IsVsHierarchyItemExpandedAsync(vsItem, solutionExplorerWindow))
{
expandedItems.Add(vsItem);
}
return(0, null);
},
callerObject : null);
return(expandedItems);
}
