public override VirtualFile GetFile(string virtualPath)
{
if (ThemeHelper.PathIsThemeVars(virtualPath))
{
var theme = ThemeHelper.ResolveCurrentTheme();
int storeId = ThemeHelper.ResolveCurrentSiteId();
return(new ThemeVarsVirtualFile(virtualPath, theme.ThemeName, storeId));
}
var result = GetResolveResult(virtualPath);
if (result != null)
{
if (!result.IsExplicit)
{
return(new InheritedVirtualThemeFile(result));
}
else
{
virtualPath = result.OriginalVirtualPath;
}
}
return(_previous.GetFile(virtualPath));
}
public override CacheDependency GetCacheDependency(string virtualPath, IEnumerable virtualPathDependencies, DateTime utcStart)
{
bool isLess;
bool isBundle;
if (!ThemeHelper.IsStyleSheet(virtualPath, out isLess, out isBundle))
{
return(GetCacheDependencyInternal(virtualPath, virtualPathDependencies, utcStart));
}
else
{
if (!isLess && !isBundle)
{
// it's a static css file (no bundle, no less)
return(GetCacheDependencyInternal(virtualPath, virtualPathDependencies, utcStart));
}
var arrPathDependencies = virtualPathDependencies.Cast <string>().ToArray();
// determine the virtual themevars.less import reference
var themeVarsFile = arrPathDependencies.Where(x => ThemeHelper.PathIsThemeVars(x)).FirstOrDefault();
if (themeVarsFile.IsEmpty())
{
// no themevars import... so no special considerations here
return(GetCacheDependencyInternal(virtualPath, virtualPathDependencies, utcStart));
}
// exclude the themevars import from the file dependencies list,
// 'cause this one cannot be monitored by the physical file system
var fileDependencies = arrPathDependencies.Except(new string[] { themeVarsFile });
if (arrPathDependencies.Any())
{
int storeId = ThemeHelper.ResolveCurrentSiteId();
var theme = ThemeHelper.ResolveCurrentTheme();
// invalidate the cache when variables change
string cacheKey = AspNetCache.BuildKey(ModelCacheEventConsumer.BuildThemeVarsCacheKey(theme.ThemeName, storeId));
var cacheDependency = new CacheDependency(MapDependencyPaths(fileDependencies), new string[] { cacheKey }, utcStart);
return(cacheDependency);
}
return(null);
}
}