mojo/runner/context.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 MOJO_RUNNER_CONTEXT_H_
   6 #define MOJO_RUNNER_CONTEXT_H_
   7
   8 #include <string>
   9
  10 #include "base/callback_forward.h"
  11 #include "base/macros.h"
  12 #include "mojo/edk/embedder/process_delegate.h"
  13 #include "mojo/runner/scoped_user_data_dir.h"
  14 #include "mojo/runner/task_runners.h"
  15 #include "mojo/runner/url_resolver.h"
  16 #include "mojo/shell/application_manager.h"
  17
  18 namespace mojo {
  19 namespace runner {
  20
  21 class NativeApplicationLoader;
  22
  23 // The "global" context for the shell's main process.
  24 class Context : public shell::ApplicationManager::Delegate,
  25                 public embedder::ProcessDelegate {
  26  public:
  27   Context();
  28   ~Context() override;
  29
  30   static void EnsureEmbedderIsInitialized();
  31
  32   // Point to the directory containing installed services, such as the network
  33   // service. By default this directory is used as the base URL for resolving
  34   // unknown mojo: URLs. The network service will be loaded from this directory,
  35   // even when the base URL for unknown mojo: URLs is overridden.
  36   void SetShellFileRoot(const base::FilePath& path);
  37
  38   // Resolve an URL relative to the shell file root. This is a nop for
  39   // everything but relative file URLs or URLs without a scheme.
  40   GURL ResolveShellFileURL(const std::string& path);
  41
  42   // Override the CWD, which is used for resolving file URLs passed in from the
  43   // command line.
  44   void SetCommandLineCWD(const base::FilePath& path);
  45
  46   // Resolve an URL relative to the CWD mojo_shell was invoked from. This is a
  47   // nop for everything but relative file URLs or URLs without a scheme.
  48   GURL ResolveCommandLineURL(const std::string& path);
  49
  50   // This must be called with a message loop set up for the current thread,
  51   // which must remain alive until after Shutdown() is called. Returns true on
  52   // success.
  53   bool Init();
  54
  55   // If Init() was called and succeeded, this must be called before destruction.
  56   void Shutdown();
  57
  58   // NOTE: call either Run() or RunCommandLineApplication(), but not both.
  59
  60   // Runs the app specified by |url|.
  61   void Run(const GURL& url);
  62
  63   // Run the application specified on the commandline. When the app finishes,
  64   // |callback| is run if not null, otherwise the message loop is quit.
  65   void RunCommandLineApplication(const base::Closure& callback);
  66
  67   TaskRunners* task_runners() { return task_runners_.get(); }
  68   shell::ApplicationManager* application_manager() {
  69     return &application_manager_;
  70   }
  71   URLResolver* url_resolver() { return &url_resolver_; }
  72
  73  private:
  74   class NativeViewportApplicationLoader;
  75
  76   // ApplicationManager::Delegate overrides.
  77   GURL ResolveMappings(const GURL& url) override;
  78   GURL ResolveMojoURL(const GURL& url) override;
  79   bool CreateFetcher(
  80       const GURL& url,
  81       const shell::Fetcher::FetchCallback& loader_callback) override;
  82
  83   // ProcessDelegate implementation.
  84   void OnShutdownComplete() override;
  85
  86   void OnApplicationEnd(const GURL& url);
  87
  88   ScopedUserDataDir scoped_user_data_dir;
  89   std::set<GURL> app_urls_;
  90   scoped_ptr<TaskRunners> task_runners_;
  91   shell::ApplicationManager application_manager_;
  92   URLResolver url_resolver_;
  93   GURL shell_file_root_;
  94   GURL command_line_cwd_;
  95   base::Closure app_complete_callback_;
  96
  97   DISALLOW_COPY_AND_ASSIGN(Context);
  98 };
  99
 100 }  // namespace runner
 101 }  // namespace mojo
 102
 103 #endif  // MOJO_RUNNER_CONTEXT_H_