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      1 // Copyright 2014 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 MOJO_SHELL_DYNAMIC_APPLICATION_LOADER_H_
      6 #define MOJO_SHELL_DYNAMIC_APPLICATION_LOADER_H_
      7 
      8 #include <map>
      9 
     10 #include "base/callback.h"
     11 #include "base/macros.h"
     12 #include "base/memory/scoped_vector.h"
     13 #include "base/memory/weak_ptr.h"
     14 #include "mojo/application_manager/application_loader.h"
     15 #include "mojo/public/cpp/system/core.h"
     16 #include "mojo/services/public/interfaces/network/network_service.mojom.h"
     17 #include "mojo/shell/dynamic_service_runner.h"
     18 #include "url/gurl.h"
     19 
     20 namespace mojo {
     21 namespace shell {
     22 
     23 class Context;
     24 class DynamicServiceRunnerFactory;
     25 class DynamicServiceRunner;
     26 
     27 // An implementation of ApplicationLoader that retrieves a dynamic library
     28 // containing the implementation of the service and loads/runs it (via a
     29 // DynamicServiceRunner).
     30 class DynamicApplicationLoader : public ApplicationLoader {
     31  public:
     32   DynamicApplicationLoader(
     33       Context* context,
     34       scoped_ptr<DynamicServiceRunnerFactory> runner_factory);
     35   virtual ~DynamicApplicationLoader();
     36 
     37   void RegisterContentHandler(const std::string& mime_type,
     38                               const GURL& content_handler_url);
     39 
     40   // ApplicationLoader methods:
     41   virtual void Load(ApplicationManager* manager,
     42                     const GURL& url,
     43                     scoped_refptr<LoadCallbacks> callbacks) OVERRIDE;
     44   virtual void OnApplicationError(ApplicationManager* manager,
     45                                   const GURL& url) OVERRIDE;
     46 
     47  private:
     48   class Loader;
     49   class LocalLoader;
     50   class NetworkLoader;
     51 
     52   typedef std::map<std::string, GURL> MimeTypeToURLMap;
     53   typedef base::Callback<void(Loader*)> LoaderCompleteCallback;
     54 
     55   void LoaderComplete(Loader* loader);
     56 
     57   Context* const context_;
     58   scoped_ptr<DynamicServiceRunnerFactory> runner_factory_;
     59   NetworkServicePtr network_service_;
     60   MimeTypeToURLMap mime_type_to_url_;
     61   ScopedVector<Loader> loaders_;
     62   LoaderCompleteCallback loader_complete_callback_;
     63 
     64   DISALLOW_COPY_AND_ASSIGN(DynamicApplicationLoader);
     65 };
     66 
     67 }  // namespace shell
     68 }  // namespace mojo
     69 
     70 #endif  // MOJO_SHELL_DYNAMIC_APPLICATION_LOADER_H_
     71