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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 // NOT DEAD CODE! | |
6 // This code isn't dead, even if it isn't currently being used. Please refer to: | |
7 // https://www.chromium.org/developers/how-tos/compact-language-detector-cld-dat
a-source-configuration | |
8 | |
9 #ifndef COMPONENTS_TRANSLATE_CONTENT_RENDERER_DATA_FILE_RENDERER_CLD_DATA_PROVID
ER_H_ | |
10 #define COMPONENTS_TRANSLATE_CONTENT_RENDERER_DATA_FILE_RENDERER_CLD_DATA_PROVID
ER_H_ | |
11 | |
12 #include <stdint.h> | |
13 | |
14 #include "base/files/file.h" | |
15 #include "base/macros.h" | |
16 #include "components/translate/content/renderer/renderer_cld_data_provider.h" | |
17 #include "ipc/ipc_platform_file.h" | |
18 | |
19 namespace content { | |
20 class RenderFrameObserver; | |
21 } | |
22 | |
23 namespace translate { | |
24 | |
25 class DataFileRendererCldDataProvider : public RendererCldDataProvider { | |
26 public: | |
27 explicit DataFileRendererCldDataProvider(content::RenderFrameObserver*); | |
28 ~DataFileRendererCldDataProvider() override; | |
29 | |
30 // Load the CLD data from the specified file, starting at the specified byte | |
31 // offset and having the specified length (also in bytes). Nominally, the | |
32 // implementation will mmap the file in read-only mode and hand the data off | |
33 // to CLD2::loadDataFromRawAddress(...). See the module | |
34 // third_party/cld_2/src/internal/compact_lang_det.h for more information on | |
35 // the dynamic data loading process. | |
36 void LoadCldData(base::File file, | |
37 const uint64_t data_offset, | |
38 const uint64_t data_length); | |
39 | |
40 // RendererCldDataProvider implementations: | |
41 bool OnMessageReceived(const IPC::Message&) override; | |
42 void SendCldDataRequest() override; | |
43 void SetCldAvailableCallback(base::Callback<void(void)>) override; | |
44 bool IsCldDataAvailable() override; | |
45 | |
46 private: | |
47 void OnCldDataAvailable(const IPC::PlatformFileForTransit ipc_file_handle, | |
48 const uint64_t data_offset, | |
49 const uint64_t data_length); | |
50 content::RenderFrameObserver* render_frame_observer_; | |
51 base::Callback<void(void)> cld_available_callback_; | |
52 | |
53 DISALLOW_COPY_AND_ASSIGN(DataFileRendererCldDataProvider); | |
54 }; | |
55 | |
56 } // namespace translate | |
57 | |
58 #endif // COMPONENTS_TRANSLATE_CONTENT_RENDERER_DATA_FILE_RENDERER_CLD_DATA_PRO
VIDER_H_ | |
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