private void RenderScriptReferences()
{
// Get scripts that are added by the framework
var frameworkScriptPaths = GetFrameworkScripts();
// Construct smart list
var smartList = new List <string>();
// Hard-code WebForms.js - it will be rendered here, and not in Page (like by default)
smartList.Add(GetUrl(new ScriptReference(this.Page.ClientScript.GetWebResourceUrl(typeof(System.Web.UI.Page), "WebForms.js"))));
// Add scripts needed by the framework
smartList.AddRange(frameworkScriptPaths);
// Add scripts previously added to this control
smartList.AddRange(this.Scripts.Select(s => GetUrl(s)));
// Add scripts from the smart loader
smartList.AddRange(SmartLoader.GetScriptsToLoad());
// Clear previous scripts (they are now part of smartList)
Scripts.Clear();
// Initialize bundling
var allowJsBundling = PortalContext.Current.BundleOptions.AllowJsBundling;
var bundle = allowJsBundling ? new JsBundle() : null;
// Go through all scripts
foreach (var spath in smartList)
{
var lower = spath.ToLower();
if (lower.EndsWith(".css"))
{
UITools.AddStyleSheetToHeader(UITools.GetHeader(), spath);
}
else
{
var isPostponed = PortalBundleOptions.JsIsBlacklisted(spath);
var isFrameworkScript = frameworkScriptPaths.Contains(spath);
if (isPostponed)
{
_postponedList.Add(spath);
}
if (allowJsBundling && !isPostponed)
{
bundle.AddPath(spath);
}
if (!isPostponed && !isFrameworkScript)
{
Scripts.Add(new ScriptReference(spath));
}
}
}
// Go through postponed scripts
foreach (var spath in _postponedList)
{
Scripts.Add(new ScriptReference(spath));
}
// NOTE: At this point, script order is the following:
// 1) scripts added by the framework
// 2) scripts added directly to this control
// 3) scripts from SmartLoader (that are not blacklisted from bundling)
// 4) scripts from SmartLoader (that are blacklisted from bundling)
// Finalize bundling
if (allowJsBundling)
{
// If bundling is allowed, close the bundle and process it
bundle.Close();
BundleHandler.AddBundleIfNotThere(bundle);
ThreadPool.QueueUserWorkItem(x => BundleHandler.AddBundleToCache(bundle));
if (BundleHandler.IsBundleInCache(bundle))
{
// If the bundle is complete, use its path to replace the path of all the scripts that are not postponed
_bundle = bundle;
}
}
}
private void RenderScriptReferences()
{
var smartList = SmartLoader.GetScriptsToLoad();
var allowJsBundling = PortalContext.Current.BundleOptions.AllowJsBundling;
JsBundle bundle = null;
List <string> postponedList = null;
if (allowJsBundling)
{
bundle = new JsBundle();
postponedList = new List <string>();
}
foreach (var spath in smartList)
{
var lower = spath.ToLower();
if (lower.EndsWith(".css"))
{
UITools.AddStyleSheetToHeader(UITools.GetHeader(), spath);
}
else
{
if (allowJsBundling)
{
// If bundling is allowed, add the path to the bundle - if it is not blacklisted
if (PortalBundleOptions.JsIsBlacklisted(spath))
{
postponedList.Add(spath);
}
else
{
bundle.AddPath(spath);
}
}
else
{
// If bundling is disabled, fall back to the old behaviour
var sref = new ScriptReference(spath);
Scripts.Add(sref);
}
}
}
if (allowJsBundling)
{
// If bundling is allowed, closing the bundle and adding it as a single script reference
bundle.Close();
BundleHandler.AddBundleIfNotThere(bundle);
ThreadPool.QueueUserWorkItem(x => BundleHandler.AddBundleToCache(bundle));
if (BundleHandler.IsBundleInCache(bundle))
{
// If the bundle is complete, add it as a single script reference
var sref = new ScriptReference("/sn-bundles/" + bundle.FakeFilename);
Scripts.Add(sref);
}
else
{
// The bundle will be complete in a few seconds; disallow caching the page until then
this.Page.Response.Cache.SetCacheability(HttpCacheability.NoCache);
// Fallback to adding every script again as separate script references
foreach (var path in bundle.Paths)
{
var sref = new ScriptReference(path);
Scripts.Add(sref);
}
}
//add blacklisted js path's to the script collection individually
foreach (var path in postponedList)
{
Scripts.Add(new ScriptReference(path));
}
}
}