public IChangeToken Watch(string filter)
{
if (filter.StartsWith("themevars.scss"))
{
var services = EngineContext.Current.Scope;
var theme = services.Resolve <IThemeContext>().WorkingThemeName;
var storeId = services.Resolve <IStoreContext>().CurrentStore.Id;
var cts = WebCacheInvalidator.GetThemeVarsToken(theme, storeId);
return(new CancellationChangeToken(cts.Token));
}
else if (filter.StartsWith("moduleimports.scss"))
{
// TODO: Implement module importer watcher in SassFileProvider
}
return(null);
}
public virtual async Task <ExpandoObject> GetRawVariablesAsync(string themeName, int storeId, bool skipCache = false)
{
// TODO: (core) "skipCache" somehow replaces ThemeHelper.IsStyleValidationRequest(). Change the callers accordingly.
if (skipCache)
{
// Return uncached fresh data (the variables is not nuked yet)
return(await GetRawVariablesCoreAsync(themeName, storeId));
}
else
{
string cacheKey = WebCacheInvalidator.BuildThemeVarsCacheKey(themeName, storeId);
return(await _memCache.GetOrCreateAsync(cacheKey, async (entry) =>
{
// Ensure that when this item is expired, any bundle depending on the token is also expired
entry.RegisterPostEvictionCallback((key, value, reason, state) =>
{
WebCacheInvalidator.CancelThemeVarsToken(key);
});
return await GetRawVariablesCoreAsync(themeName, storeId);
}));
}
}
