mojo/shell/dynamic_service_loader.h

   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_SERVICE_LOADER_H_
   6 #define MOJO_SHELL_DYNAMIC_SERVICE_LOADER_H_
   7
   8 #include <map>
   9
  10 #include "base/macros.h"
  11 #include "mojo/public/cpp/system/core.h"
  12 #include "mojo/public/interfaces/shell/shell.mojom.h"
  13 #include "mojo/service_manager/service_loader.h"
  14 #include "mojo/shell/dynamic_service_runner.h"
  15 #include "mojo/shell/keep_alive.h"
  16 #include "url/gurl.h"
  17
  18 namespace mojo {
  19 namespace shell {
  20
  21 class Context;
  22 class DynamicServiceRunnerFactory;
  23
  24 // An implementation of ServiceLoader that retrieves a dynamic library
  25 // containing the implementation of the service and loads/runs it (via a
  26 // DynamicServiceRunner).
  27 class DynamicServiceLoader : public ServiceLoader {
  28  public:
  29   DynamicServiceLoader(Context* context,
  30                        scoped_ptr<DynamicServiceRunnerFactory> runner_factory);
  31   virtual ~DynamicServiceLoader();
  32
  33   // Initiates the dynamic load. If the URL has a mojo: scheme, then the name
  34   // specified will be modified to the platform's naming scheme. Also, the
  35   // value specified to the --origin command line argument will be used as the
  36   // host/port.
  37   virtual void LoadService(ServiceManager* manager,
  38                            const GURL& url,
  39                            ScopedShellHandle service_handle) OVERRIDE;
  40   virtual void OnServiceError(ServiceManager* manager, const GURL& url)
  41       OVERRIDE;
  42
  43  private:
  44   class LoadContext;
  45
  46   void AppCompleted(const GURL& url);
  47
  48   Context* const context_;
  49   scoped_ptr<DynamicServiceRunnerFactory> runner_factory_;
  50
  51   typedef std::map<GURL, LoadContext*> LoadContextMap;
  52   LoadContextMap url_to_load_context_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(DynamicServiceLoader);
  55 };
  56
  57 }  // namespace shell
  58 }  // namespace mojo
  59
  60 #endif  // MOJO_SHELL_DYNAMIC_SERVICE_LOADER_H_