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1 // Copyright (c) 2011 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 CHROME_UTILITY_UTILITY_THREAD_H_ | |
6 #define CHROME_UTILITY_UTILITY_THREAD_H_ | |
7 #pragma once | |
8 | |
9 #include <string> | |
10 #include <vector> | |
11 | |
12 #include "base/basictypes.h" | |
13 #include "base/string16.h" | |
14 #include "base/platform_file.h" | |
15 #include "content/common/child_thread.h" | |
16 | |
17 class FilePath; | |
18 class IndexedDBKey; | |
19 class SerializedScriptValue; | |
20 | |
21 namespace gfx { | |
22 class Rect; | |
23 } | |
24 | |
25 namespace IPC { | |
26 class Message; | |
27 } | |
28 | |
29 namespace printing { | |
30 struct PageRange; | |
31 } | |
32 | |
33 // This class represents the background thread where the utility task runs. | |
34 class UtilityThread : public ChildThread { | |
35 public: | |
36 UtilityThread(); | |
37 virtual ~UtilityThread(); | |
38 | |
39 // Returns the one utility thread. | |
40 static UtilityThread* current() { | |
41 return static_cast<UtilityThread*>(ChildThread::current()); | |
42 } | |
43 | |
44 private: | |
45 // IPC messages | |
46 virtual bool OnControlMessageReceived(const IPC::Message& msg); | |
47 void OnUnpackExtension(const FilePath& extension_path); | |
48 | |
49 // IPC messages for web resource service. | |
50 void OnUnpackWebResource(const std::string& resource_data); | |
51 | |
52 // IPC for parsing an extensions auto-update manifest xml file. | |
53 void OnParseUpdateManifest(const std::string& xml); | |
54 | |
55 // IPC for decoding an image. | |
56 void OnDecodeImage(const std::vector<unsigned char>& encoded_data); | |
57 | |
58 // IPC for decoding an image which is base64 encoded. | |
59 void OnDecodeImageBase64(const std::string& encoded_data); | |
60 | |
61 // IPC to render a PDF into a platform metafile. | |
62 void OnRenderPDFPagesToMetafile( | |
63 base::PlatformFile pdf_file, | |
64 const FilePath& metafile_path, | |
65 const gfx::Rect& render_area, | |
66 int render_dpi, | |
67 const std::vector<printing::PageRange>& page_ranges); | |
68 | |
69 #if defined(OS_WIN) | |
70 // Helper method for Windows. | |
71 // |highest_rendered_page_number| is set to -1 on failure to render any page. | |
72 bool RenderPDFToWinMetafile( | |
73 base::PlatformFile pdf_file, | |
74 const FilePath& metafile_path, | |
75 const gfx::Rect& render_area, | |
76 int render_dpi, | |
77 const std::vector<printing::PageRange>& page_ranges, | |
78 int* highest_rendered_page_number); | |
79 #endif // defined(OS_WIN) | |
80 | |
81 // IPC for extracting IDBKeys from SerializedScriptValues, used by IndexedDB. | |
82 void OnIDBKeysFromValuesAndKeyPath( | |
83 int id, | |
84 const std::vector<SerializedScriptValue>& serialized_script_values, | |
85 const string16& idb_key_path); | |
86 | |
87 // IPC for injecting an IndexedDB key into a SerializedScriptValue. | |
88 void OnInjectIDBKey(const IndexedDBKey& key, | |
89 const SerializedScriptValue& value, | |
90 const string16& key_path); | |
91 | |
92 // IPC for parsing a string of JSON into a Value. | |
93 void OnParseJSON(const std::string& json); | |
94 | |
95 // IPC to notify we'll be running in batch mode instead of quitting after | |
96 // any of the IPCs above, we'll only quit during OnBatchModeFinished(). | |
97 void OnBatchModeStarted(); | |
98 | |
99 // IPC to notify batch mode has finished and we should now quit. | |
100 void OnBatchModeFinished(); | |
101 | |
102 // IPC to get capabilities and defaults for the specified | |
103 // printer. Used on Windows to isolate the service process from printer driver | |
104 // crashes by executing this in a separate process. This does not run in a | |
105 // sandbox. | |
106 void OnGetPrinterCapsAndDefaults(const std::string& printer_name); | |
107 | |
108 // Releases the process if we are not (or no longer) in batch mode. | |
109 void ReleaseProcessIfNeeded(); | |
110 | |
111 // True when we're running in batch mode. | |
112 bool batch_mode_; | |
113 | |
114 DISALLOW_COPY_AND_ASSIGN(UtilityThread); | |
115 }; | |
116 | |
117 #endif // CHROME_UTILITY_UTILITY_THREAD_H_ | |
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