gin/modules/module_runner_delegate.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef GIN_MODULES_MODULE_RUNNER_DELEGATE_H_
   6 #define GIN_MODULES_MODULE_RUNNER_DELEGATE_H_
   7
   8 #include <map>
   9
  10 #include "base/callback.h"
  11 #include "base/compiler_specific.h"
  12 #include "gin/gin_export.h"
  13 #include "gin/modules/file_module_provider.h"
  14 #include "gin/shell_runner.h"
  15 #include "v8/include/v8.h"
  16
  17 namespace gin {
  18
  19 typedef v8::Local<v8::Value> (*ModuleGetter)(v8::Isolate* isolate);
  20 typedef base::Callback<v8::Local<v8::Value>(v8::Isolate*)> ModuleGetterCallback;
  21
  22 // Emebedders that use AMD modules will probably want to use a RunnerDelegate
  23 // that inherits from ModuleRunnerDelegate. ModuleRunnerDelegate lets embedders
  24 // register built-in modules and routes module requests to FileModuleProvider.
  25 class GIN_EXPORT ModuleRunnerDelegate : public ShellRunnerDelegate {
  26  public:
  27   explicit ModuleRunnerDelegate(
  28       const std::vector<base::FilePath>& search_paths);
  29   ~ModuleRunnerDelegate() override;
  30
  31   void AddBuiltinModule(const std::string& id, ModuleGetter getter);
  32   void AddBuiltinModule(const std::string& id,
  33                         const ModuleGetterCallback& getter);
  34
  35  protected:
  36   void AttemptToLoadMoreModules(Runner* runner);
  37
  38  private:
  39   typedef std::map<std::string, ModuleGetterCallback> BuiltinModuleMap;
  40
  41   // From ShellRunnerDelegate:
  42   v8::Handle<v8::ObjectTemplate> GetGlobalTemplate(
  43       ShellRunner* runner,
  44       v8::Isolate* isolate) override;
  45   void DidCreateContext(ShellRunner* runner) override;
  46   void DidRunScript(ShellRunner* runner) override;
  47
  48   BuiltinModuleMap builtin_modules_;
  49   FileModuleProvider module_provider_;
  50
  51   DISALLOW_COPY_AND_ASSIGN(ModuleRunnerDelegate);
  52 };
  53
  54 }  // namespace gin
  55
  56 #endif  // GIN_MODULES_MODULE_RUNNER_DELEGATE_H_