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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 SERVICES_SHELL_PUBLIC_CPP_APPLICATION_RUNNER_H_ | |
6 #define SERVICES_SHELL_PUBLIC_CPP_APPLICATION_RUNNER_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "base/message_loop/message_loop.h" | |
11 #include "mojo/public/cpp/system/core.h" | |
12 | |
13 namespace shell { | |
14 | |
15 class Service; | |
16 class ServiceContext; | |
17 | |
18 // A utility for running a chromium based mojo Application. The typical use | |
19 // case is to use when writing your MojoMain: | |
20 // | |
21 // MojoResult MojoMain(MojoHandle shell_handle) { | |
22 // shell::ApplicationRunner runner(new MyDelegate()); | |
23 // return runner.Run(shell_handle); | |
24 // } | |
25 // | |
26 // ApplicationRunner takes care of chromium environment initialization and | |
27 // shutdown, and starting a MessageLoop from which your application can run and | |
28 // ultimately Quit(). | |
29 class ApplicationRunner { | |
30 public: | |
31 // Takes ownership of |client|. | |
32 explicit ApplicationRunner(Service* client); | |
33 ~ApplicationRunner(); | |
34 | |
35 static void InitBaseCommandLine(); | |
36 | |
37 void set_message_loop_type(base::MessageLoop::Type type); | |
38 | |
39 // Once the various parameters have been set above, use Run to initialize an | |
40 // ServiceContext wired to the provided delegate, and run a MessageLoop until | |
41 // the application exits. | |
42 // | |
43 // Iff |init_base| is true, the runner will perform some initialization of | |
44 // base globals (e.g. CommandLine and AtExitManager) before starting the | |
45 // application. | |
46 MojoResult Run(MojoHandle shell_handle, bool init_base); | |
47 | |
48 // Calls Run above with |init_base| set to |true|. | |
49 MojoResult Run(MojoHandle shell_handle); | |
50 | |
51 // Allows the caller to shut down the connection with the Service Manager. | |
52 // After the Service Manager notices the pipe has closed, it will no longer | |
53 // track an instance of this service, though this service may continue to run | |
54 // and handle requests from others. | |
55 void DestroyServiceContext(); | |
56 | |
57 // Allows the caller to explicitly quit the application. Must be called from | |
58 // the thread which created the ApplicationRunner. | |
59 void Quit(); | |
60 | |
61 private: | |
62 std::unique_ptr<ServiceContext> context_; | |
63 std::unique_ptr<Service> client_; | |
64 | |
65 // MessageLoop type. TYPE_CUSTOM is default (MessagePumpMojo will be used as | |
66 // the underlying message pump). | |
67 base::MessageLoop::Type message_loop_type_; | |
68 // Whether Run() has been called. | |
69 bool has_run_; | |
70 | |
71 DISALLOW_COPY_AND_ASSIGN(ApplicationRunner); | |
72 }; | |
73 | |
74 } // namespace shell | |
75 | |
76 #endif // SERVICES_SHELL_PUBLIC_CPP_APPLICATION_RUNNER_H_ | |
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