Introduce ModulePendingScript

third_party/WebKit/Source/core/dom/Modulator.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef Modulator_h
 #define Modulator_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/V8PerContextData.h"
 #include "core/CoreExport.h"
@@ skipping 16 matching lines @@
 class WebTaskRunner;
 
 // A SingleModuleClient is notified when single module script node (node as in a
 // module tree graph) load is complete and its corresponding entry is created in
 // module map.
 class SingleModuleClient : public GarbageCollectedMixin {
  public:
   virtual void NotifyModuleLoadFinished(ModuleScript*) = 0;
 };
 
+// A ModuleTreeClient is notified when a module script and its whole descendent
+// tree load is complete.
+class ModuleTreeClient : public GarbageCollectedMixin {
+ public:
+  virtual void NotifyModuleTreeLoadFinished(ModuleScript*) = 0;
+};
+
 // spec: "top-level module fetch flag"
 // https://html.spec.whatwg.org/multipage/webappapis.html#fetching-scripts-is-top-level
 enum class ModuleGraphLevel { kTopLevelModuleFetch, kDependentModuleFetch };
 
 // A Modulator is an interface for "environment settings object" concept for
 // module scripts.
 // https://html.spec.whatwg.org/#environment-settings-object
 //
 // A Modulator also serves as an entry point for various module spec algorithms.
 class CORE_EXPORT Modulator : public GarbageCollectedFinalized<Modulator>,
@@ skipping 41 matching lines @@
   // if the cached entry doesn't exist.
   // The client can be notified either synchronously or asynchronously.
   virtual void FetchNewSingleModule(const ModuleScriptFetchRequest&,
                                     ModuleGraphLevel,
                                     ModuleScriptLoaderClient*) = 0;
 };
 
 }  // namespace blink
 
 #endif