Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_dom_ModuleLoadRequest_h
       8             : #define mozilla_dom_ModuleLoadRequest_h
       9             : 
      10             : #include "ScriptLoadRequest.h"
      11             : #include "mozilla/MozPromise.h"
      12             : 
      13             : namespace mozilla {
      14             : namespace dom {
      15             : 
      16             : class ModuleScript;
      17             : class ScriptLoader;
      18             : 
      19             : // A load request for a module, created for every top level module script and
      20             : // every module import.  Load request can share an ModuleScript if there are
      21             : // multiple imports of the same module.
      22             : 
      23             : class ModuleLoadRequest final : public ScriptLoadRequest
      24             : {
      25           0 :   ~ModuleLoadRequest() = default;
      26             : 
      27             :   ModuleLoadRequest(const ModuleLoadRequest& aOther) = delete;
      28             :   ModuleLoadRequest(ModuleLoadRequest&& aOther) = delete;
      29             : 
      30             : public:
      31             :   NS_DECL_ISUPPORTS_INHERITED
      32           0 :   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ModuleLoadRequest, ScriptLoadRequest)
      33             : 
      34             :   ModuleLoadRequest(nsIScriptElement* aElement,
      35             :                     uint32_t aVersion,
      36             :                     CORSMode aCORSMode,
      37             :                     const SRIMetadata& aIntegrity,
      38             :                     ScriptLoader* aLoader);
      39             : 
      40           0 :   bool IsTopLevel() const
      41             :   {
      42           0 :     return mIsTopLevel;
      43             :   }
      44             : 
      45             :   void SetReady() override;
      46             :   void Cancel() override;
      47             : 
      48             :   void ModuleLoaded();
      49             :   void DependenciesLoaded();
      50             :   void LoadFailed();
      51             : 
      52             :   // Is this a request for a top level module script or an import?
      53             :   bool mIsTopLevel;
      54             : 
      55             :   // The base URL used for resolving relative module imports.
      56             :   nsCOMPtr<nsIURI> mBaseURL;
      57             : 
      58             :   // Pointer to the script loader, used to trigger actions when the module load
      59             :   // finishes.
      60             :   RefPtr<ScriptLoader> mLoader;
      61             : 
      62             :   // The importing module, or nullptr for top level module scripts.  Used to
      63             :   // implement the ancestor list checked when fetching module dependencies.
      64             :   RefPtr<ModuleLoadRequest> mParent;
      65             : 
      66             :   // Set to a module script object after a successful load or nullptr on
      67             :   // failure.
      68             :   RefPtr<ModuleScript> mModuleScript;
      69             : 
      70             :   // A promise that is completed on successful load of this module and all of
      71             :   // its dependencies, indicating that the module is ready for instantiation and
      72             :   // evaluation.
      73             :   MozPromiseHolder<GenericPromise> mReady;
      74             : 
      75             :   // Array of imported modules.
      76             :   nsTArray<RefPtr<ModuleLoadRequest>> mImports;
      77             : };
      78             : 
      79             : } // dom namespace
      80             : } // mozilla namespace
      81             : 
      82             : #endif // mozilla_dom_ModuleLoadRequest_h