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 "base/time/time.h"
  13 #include "mojo/edk/embedder/process_delegate.h"
  14 #include "mojo/runner/scoped_user_data_dir.h"
  15 #include "mojo/runner/task_runners.h"
  16 #include "mojo/runner/url_resolver.h"
  17 #include "mojo/shell/application_manager.h"
  18
  19 namespace mojo {
  20 namespace runner {
  21
  22 class NativeApplicationLoader;
  23
  24 // The "global" context for the shell's main process.
  25 class Context : public shell::ApplicationManager::Delegate,
  26                 public embedder::ProcessDelegate {
  27  public:
  28   Context();
  29   ~Context() override;
  30
  31   static void EnsureEmbedderIsInitialized();
  32
  33   // Point to the directory containing installed services, such as the network
  34   // service. By default this directory is used as the base URL for resolving
  35   // unknown mojo: URLs. The network service will be loaded from this directory,
  36   // even when the base URL for unknown mojo: URLs is overridden.
  37   void SetShellFileRoot(const base::FilePath& path);
  38
  39   // Resolve an URL relative to the shell file root. This is a nop for
  40   // everything but relative file URLs or URLs without a scheme.
  41   GURL ResolveShellFileURL(const std::string& path);
  42
  43   // Override the CWD, which is used for resolving file URLs passed in from the
  44   // command line.
  45   void SetCommandLineCWD(const base::FilePath& path);
  46
  47   // Resolve an URL relative to the CWD mojo_shell was invoked from. This is a
  48   // nop for everything but relative file URLs or URLs without a scheme.
  49   GURL ResolveCommandLineURL(const std::string& path);
  50
  51   // This must be called with a message loop set up for the current thread,
  52   // which must remain alive until after Shutdown() is called. Returns true on
  53   // success.
  54   bool Init();
  55
  56   // If Init() was called and succeeded, this must be called before destruction.
  57   void Shutdown();
  58
  59   // NOTE: call either Run() or RunCommandLineApplication(), but not both.
  60
  61   // Runs the app specified by |url|.
  62   void Run(const GURL& url);
  63
  64   // Run the application specified on the commandline. When the app finishes,
  65   // |callback| is run if not null, otherwise the message loop is quit.
  66   void RunCommandLineApplication(const base::Closure& callback);
  67
  68   TaskRunners* task_runners() { return task_runners_.get(); }
  69   shell::ApplicationManager* application_manager() {
  70     return &application_manager_;
  71   }
  72   URLResolver* url_resolver() { return &url_resolver_; }
  73
  74  private:
  75   class NativeViewportApplicationLoader;
  76
  77   // ApplicationManager::Delegate overrides.
  78   GURL ResolveMappings(const GURL& url) override;
  79   GURL ResolveMojoURL(const GURL& url) override;
  80   bool CreateFetcher(
  81       const GURL& url,
  82       const shell::Fetcher::FetchCallback& loader_callback) override;
  83
  84   // ProcessDelegate implementation.
  85   void OnShutdownComplete() override;
  86
  87   void OnApplicationEnd(const GURL& url);
  88
  89   ScopedUserDataDir scoped_user_data_dir;
  90   std::set<GURL> app_urls_;
  91   scoped_ptr<TaskRunners> task_runners_;
  92   shell::ApplicationManager application_manager_;
  93   URLResolver url_resolver_;
  94   GURL shell_file_root_;
  95   GURL command_line_cwd_;
  96   base::Closure app_complete_callback_;
  97   base::Time main_entry_time_;
  98
  99   DISALLOW_COPY_AND_ASSIGN(Context);
 100 };
 101
 102 }  // namespace runner
 103 }  // namespace mojo
 104
 105 #endif  // MOJO_RUNNER_CONTEXT_H_