Flutter Windows Embedder
dart_project.h
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1 // Copyright 2013 The Flutter 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 FLUTTER_SHELL_PLATFORM_WINDOWS_CLIENT_WRAPPER_INCLUDE_FLUTTER_DART_PROJECT_H_
6 #define FLUTTER_SHELL_PLATFORM_WINDOWS_CLIENT_WRAPPER_INCLUDE_FLUTTER_DART_PROJECT_H_
7 
8 #include <string>
9 #include <vector>
10 
11 namespace flutter {
12 
13 // A set of Flutter and Dart assets used to initialize a Flutter engine.
14 class DartProject {
15  public:
16  // Creates a DartProject from a series of absolute paths.
17  // The three paths are:
18  // - assets_path: Path to the assets directory as built by the Flutter tool.
19  // - icu_data_path: Path to the icudtl.dat file.
20  // - aot_library_path: Path to the AOT snapshot file.
21  //
22  // The paths may either be absolute or relative to the directory containing
23  // the running executable.
24  explicit DartProject(const std::wstring& assets_path,
25  const std::wstring& icu_data_path,
26  const std::wstring& aot_library_path) {
27  assets_path_ = assets_path;
28  icu_data_path_ = icu_data_path;
29  aot_library_path_ = aot_library_path;
30  }
31 
32  // Creates a DartProject from a directory path. The directory should contain
33  // the following top-level items:
34  // - icudtl.dat (provided as a resource by the Flutter tool)
35  // - flutter_assets (as built by the Flutter tool)
36  // - app.so, for an AOT build (as built by the Flutter tool)
37  //
38  // The path can either be absolute, or relative to the directory containing
39  // the running executable.
40  explicit DartProject(const std::wstring& path) {
41  assets_path_ = path + L"\\flutter_assets";
42  icu_data_path_ = path + L"\\icudtl.dat";
43  aot_library_path_ = path + L"\\app.so";
44  }
45 
46  ~DartProject() = default;
47 
48  // Sets the Dart entrypoint to the specified value.
49  //
50  // If not set, the default entrypoint (main) is used. Custom Dart entrypoints
51  // must be decorated with `@pragma('vm:entry-point')`.
52  void set_dart_entrypoint(const std::string& entrypoint) {
53  if (entrypoint.empty()) {
54  return;
55  }
56  dart_entrypoint_ = entrypoint;
57  }
58 
59  // Returns the Dart entrypoint.
60  const std::string& dart_entrypoint() const { return dart_entrypoint_; }
61 
62  // Sets the command line arguments that should be passed to the Dart
63  // entrypoint.
64  void set_dart_entrypoint_arguments(std::vector<std::string> arguments) {
65  dart_entrypoint_arguments_ = std::move(arguments);
66  }
67 
68  // Returns any command line arguments that should be passed to the Dart
69  // entrypoint.
70  const std::vector<std::string>& dart_entrypoint_arguments() const {
71  return dart_entrypoint_arguments_;
72  }
73 
74  private:
75  // Accessors for internals are private, so that they can be changed if more
76  // flexible options for project structures are needed later without it
77  // being a breaking change. Provide access to internal classes that need
78  // them.
79  friend class FlutterEngine;
80  friend class FlutterViewController;
81  friend class DartProjectTest;
82 
83  const std::wstring& assets_path() const { return assets_path_; }
84  const std::wstring& icu_data_path() const { return icu_data_path_; }
85  const std::wstring& aot_library_path() const { return aot_library_path_; }
86 
87  // The path to the assets directory.
88  std::wstring assets_path_;
89  // The path to the ICU data.
90  std::wstring icu_data_path_;
91  // The path to the AOT library. This will always return a path, but non-AOT
92  // builds will not be expected to actually have a library at that path.
93  std::wstring aot_library_path_;
94  // The Dart entrypoint to launch.
95  std::string dart_entrypoint_;
96  // The list of arguments to pass through to the Dart entrypoint.
97  std::vector<std::string> dart_entrypoint_arguments_;
98 };
99 
100 } // namespace flutter
101 
102 #endif // FLUTTER_SHELL_PLATFORM_WINDOWS_CLIENT_WRAPPER_INCLUDE_FLUTTER_DART_PROJECT_H_
flutter::DartProjectTest
Definition: dart_project_unittests.cc:13
flutter::DartProject::set_dart_entrypoint_arguments
void set_dart_entrypoint_arguments(std::vector< std::string > arguments)
Definition: dart_project.h:64
flutter::FlutterEngine
Definition: flutter_engine.h:28
flutter::DartProject
Definition: dart_project.h:14
flutter::DartProject::DartProject
DartProject(const std::wstring &path)
Definition: dart_project.h:40
flutter::DartProject::~DartProject
~DartProject()=default
flutter::FlutterViewController
Definition: flutter_view_controller.h:25
flutter::DartProject::set_dart_entrypoint
void set_dart_entrypoint(const std::string &entrypoint)
Definition: dart_project.h:52
flutter::DartProject::dart_entrypoint_arguments
const std::vector< std::string > & dart_entrypoint_arguments() const
Definition: dart_project.h:70
flutter
Definition: accessibility_bridge_windows.cc:11
flutter::DartProject::dart_entrypoint
const std::string & dart_entrypoint() const
Definition: dart_project.h:60
flutter::DartProject::DartProject
DartProject(const std::wstring &assets_path, const std::wstring &icu_data_path, const std::wstring &aot_library_path)
Definition: dart_project.h:24