text: // Copyright 2013 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 GIN_MODULES_MODULE_RUNNER_DELEGATE_H_
  #define GIN_MODULES_MODULE_RUNNER_DELEGATE_H_
  
  #include <map>
  
  #include "base/compiler_specific.h"
  #include "gin/gin_export.h"
  #include "gin/modules/file_module_provider.h"
  #include "gin/runner.h"
  
  namespace gin {
  
  typedef v8::Local<v8::ObjectTemplate> (*ModuleTemplateGetter)(
      v8::Isolate* isolate);
  
  // Emebedders that use AMD modules will probably want to use a RunnerDelegate
  // that inherits from ModuleRunnerDelegate. ModuleRunnerDelegate lets embedders
  // register built-in modules and routes module requests to FileModuleProvider.
  class GIN_EXPORT ModuleRunnerDelegate : public RunnerDelegate {
   public:
    explicit ModuleRunnerDelegate(
        const std::vector<base::FilePath>& search_paths);
    virtual ~ModuleRunnerDelegate();
  
    // Lets you register a built-in module. Built-in modules are instantiated by
    // creating a new instance of a v8::ObjectTemplate rather than by executing
    // code. This function takes a ModuleTemplateGetter rather than a
    // v8::ObjectTemplate directly so that embedders can create object templates
    // lazily.
    void AddBuiltinModule(const std::string& id, ModuleTemplateGetter templ);
  
   protected:
    void AttemptToLoadMoreModules(Runner* runner);
  
   private:
    typedef std::map<std::string, ModuleTemplateGetter> BuiltinModuleMap;
  
    // From RunnerDelegate:
    virtual v8::Handle<v8::ObjectTemplate> GetGlobalTemplate(
        Runner* runner) OVERRIDE;
    virtual void DidCreateContext(Runner* runner) OVERRIDE;
    virtual void DidRunScript(Runner* runner) OVERRIDE;
  
    BuiltinModuleMap builtin_modules_;
    FileModuleProvider module_provider_;
  
    DISALLOW_COPY_AND_ASSIGN(ModuleRunnerDelegate);
  };
  
  }  // namespace gin
  
  #endif  // GIN_MODULES_MODULE_RUNNER_DELEGATE_H_
  