private static IEnumerable <SiteArea> ResolveFlattenedDependentSiteAreas(SiteArea siteArea)
{
// this aggregrates the dependencies etc into one list
var _aggregrator = (Action <List <SiteArea>, SiteArea>)null;
_aggregrator = new Action <List <SiteArea>, SiteArea>((l, a) =>
{
if (!l.Contains(a))
{
l.Add(a);
}
if (!a.HasDependencies)
{
return;
}
foreach (var _dependnecy in a.AreaDependencies)
{
var _area = SiteMap.Areas[_dependnecy.Key];
if (!l.Contains(_area))
{
_aggregrator(l, _area);
}
}
});
// we aggregrate all the child areas, recursively
var _areas = new List <SiteArea>();
_aggregrator(_areas, siteArea);
return(_areas);
}
private static void LoadSiteArea(SiteArea siteArea, Action <bool> loadCallback)
{
var _dependentAreas = ResolveFlattenedDependentSiteAreas(siteArea);
var _orderedDependnetAreas = new Stack <SiteArea>(TopologicallyOrderDependentSiteAreas(_dependentAreas));
var _subscribeHandler = (Action <LoadedResourceInfo>)null;
_subscribeHandler = new Action <LoadedResourceInfo>((r) =>
{
if (r.IsLoaded)
{
if (_orderedDependnetAreas.Count == 0)
{
siteArea.InternalIsInitialized = true;
if (loadCallback != null)
{
loadCallback(true);
}
}
else
{
var _nextArea = _orderedDependnetAreas.Pop();
ObservableExtensions.Subscribe(RemoteResourceLoader.LoadResource(new Uri(_nextArea.RemoteUrl, UriKind.RelativeOrAbsolute)), _subscribeHandler);
}
}
else
{
if (loadCallback != null)
{
loadCallback(false);
}
loadCallback = null;
}
});
// and we start the chain
var _area = _orderedDependnetAreas.Pop();
ObservableExtensions.Subscribe(RemoteResourceLoader.LoadResource(new Uri(_area.RemoteUrl, UriKind.RelativeOrAbsolute)), _subscribeHandler);
}