internal void UpdateContextHierarchyIfContainsDocument(IVsHierarchy sharedHierarchy, DocumentId documentId)
{
// TODO: This is a very roundabout way to update the context
// The sharedHierarchy passed in has a new context, but we don't know what it is.
// The documentId passed in is associated with this sharedHierarchy, and this method
// will be called once for each such documentId. During this process, one of these
// documentIds will actually belong to the new SharedItemContextHierarchy. Once we
// find that one, we can map back to the open buffer and set its active context to
// the appropriate project.
var contextHierarchy = LinkedFileUtilities.GetSharedItemContextHierarchy(sharedHierarchy);
// TODO: linear search
var matchingProject = CurrentSolution.Projects.FirstOrDefault(p => GetHostProject(p.Id).Hierarchy == contextHierarchy);
if (matchingProject == null)
{
// How?
return;
}
if (!matchingProject.ContainsDocument(documentId))
{
// While this documentId is associated with one of the head projects for this
// sharedHierarchy, it is not associated with the new context hierarchy. Another
// documentId will be passed to this method and update the context.
return;
}
// This documentId belongs to the new SharedItemContextHierarchy. Update the associated
// buffer.
OnDocumentContextUpdated(documentId);
}
private bool IsCurrentContext(uint docCookie, DocumentKey documentKey)
{
IVsHierarchy hierarchy;
uint itemid;
RunningDocumentTable.GetDocumentHierarchyItem(docCookie, out hierarchy, out itemid);
// If it belongs to a Shared Code project, then the current context is determined
// by the SharedItemContextHierarchy.
var hierarchyOwningDocument = LinkedFileUtilities.GetSharedItemContextHierarchy(hierarchy) ?? hierarchy;
return(documentKey.HostProject.Hierarchy == hierarchyOwningDocument);
}
/// <summary>
/// Finds the <see cref="DocumentId"/> related to the given <see cref="DocumentId"/> that
/// is in the current context. For regular files (non-shared and non-linked) and closed
/// linked files, this is always the provided <see cref="DocumentId"/>. For open linked
/// files and open shared files, the active context is already tracked by the
/// <see cref="Workspace"/> and can be looked up directly. For closed shared files, the
/// document in the shared project's <see cref="__VSHPROPID7.VSHPROPID_SharedItemContextHierarchy"/>
/// is preferred.
/// </summary>
internal override DocumentId GetDocumentIdInCurrentContext(DocumentId documentId)
{
// If the document is open, then the Workspace knows the current context for both
// linked and shared files
if (IsDocumentOpen(documentId))
{
return(base.GetDocumentIdInCurrentContext(documentId));
}
var hostDocument = GetHostDocument(documentId);
var itemId = hostDocument.GetItemId();
if (itemId == (uint)VSConstants.VSITEMID.Nil)
{
// An itemid is required to determine whether the file belongs to a Shared Project
return(base.GetDocumentIdInCurrentContext(documentId));
}
// If this is a regular document or a closed linked (non-shared) document, then use the
// default logic for determining current context.
var sharedHierarchy = LinkedFileUtilities.GetSharedHierarchyForItem(hostDocument.Project.Hierarchy, itemId);
if (sharedHierarchy == null)
{
return(base.GetDocumentIdInCurrentContext(documentId));
}
// This is a closed shared document, so we must determine the correct context.
var contextHierarchy = LinkedFileUtilities.GetSharedItemContextHierarchy(sharedHierarchy);
var matchingProject = CurrentSolution.Projects.FirstOrDefault(p => GetHostProject(p.Id).Hierarchy == contextHierarchy);
if (matchingProject == null)
{
return(base.GetDocumentIdInCurrentContext(documentId));
}
if (matchingProject.ContainsDocument(documentId))
{
// The provided documentId is in the current context project
return(documentId);
}
// The current context document is from another project.
var linkedDocumentIds = CurrentSolution.GetDocument(documentId).GetLinkedDocumentIds();
var matchingDocumentId = linkedDocumentIds.FirstOrDefault(id => id.ProjectId == matchingProject.Id);
return(matchingDocumentId ?? base.GetDocumentIdInCurrentContext(documentId));
}
