// 'parentItem' can be either a Project or ProjectItem
private static async Task <EnvDTE.ProjectItem> GetOrCreateFolderAsync(
EnvDTE.Project envDTEProject,
object parentItem,
string fullPath,
string folderRelativePath,
string folderName,
bool createIfNotExists)
{
Debug.Assert(ThreadHelper.CheckAccess());
if (parentItem == null)
{
return(null);
}
EnvDTE.ProjectItem subFolder;
EnvDTE.ProjectItems envDTEProjectItems = GetProjectItems(parentItem);
if (TryGetFolder(envDTEProjectItems, folderName, out subFolder))
{
// Get the sub folder
return(subFolder);
}
if (createIfNotExists)
{
// The JS Metro project system has a bug whereby calling AddFolder() to an existing folder that
// does not belong to the project will throw. To work around that, we have to manually include
// it into our project.
if (EnvDTEProjectInfoUtility.IsJavaScriptProject(envDTEProject) &&
Directory.Exists(fullPath))
{
bool succeeded = await IncludeExistingFolderToProjectAsync(envDTEProject, folderRelativePath);
if (succeeded)
{
// IMPORTANT: after including the folder into project, we need to get
// a new EnvDTEProjecItems snapshot from the parent item. Otherwise, reusing
// the old snapshot from above won't have access to the added folder.
envDTEProjectItems = GetProjectItems(parentItem);
if (TryGetFolder(envDTEProjectItems, folderName, out subFolder))
{
// Get the sub folder
return(subFolder);
}
}
return(null);
}
try
{
return(envDTEProjectItems.AddFromDirectory(fullPath));
}
catch (NotImplementedException)
{
// This is the case for F#'s project system, we can't add from directory so we fall back
// to this impl
return(envDTEProjectItems.AddFolder(folderName));
}
}
return(null);
}