history_publisher.h revision 3345a6884c488ff3a535c2c9acdd33d74b37e311 
1// Copyright (c) 2010 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_BROWSER_HISTORY_HISTORY_PUBLISHER_H_
6#define CHROME_BROWSER_HISTORY_HISTORY_PUBLISHER_H_
7#pragma once
8
9#include <vector>
10
11#include "base/basictypes.h"
12#include "base/string16.h"
13
14#if defined(OS_WIN)
15#include "base/scoped_comptr_win.h"
16#include "history_indexer.h"
17#endif
18
19class GURL;
20
21namespace base {
22class Time;
23}
24
25namespace history {
26
27class HistoryPublisher {
28 public:
29  HistoryPublisher();
30  ~HistoryPublisher();
31
32  // Must call this function to complete initialization. Returns true if we
33  // need to publish data to any indexers registered with us. Returns false if
34  // there are none registered. On false, no other function should be called.
35  bool Init();
36
37  void PublishPageThumbnail(const std::vector<unsigned char>& thumbnail,
38                            const GURL& url, const base::Time& time) const;
39  void PublishPageContent(const base::Time& time, const GURL& url,
40                          const string16& title,
41                          const string16& contents) const;
42  void DeleteUserHistoryBetween(const base::Time& begin_time,
43                                const base::Time& end_time) const;
44
45 private:
46  struct PageData {
47    const base::Time& time;
48    const GURL& url;
49    const wchar_t* html;
50    const wchar_t* title;
51    const char* thumbnail_format;
52    const std::vector<unsigned char>* thumbnail;
53  };
54
55  void PublishDataToIndexers(const PageData& page_data) const;
56
57#if defined(OS_WIN)
58  // Initializes the indexer_list_ with the list of indexers that registered
59  // with us to index history. Returns true if there are any registered.
60  bool ReadRegisteredIndexersFromRegistry();
61
62  // Converts time represented by the Time class object to variant time in UTC.
63  // Returns '0' if the time object is NULL.
64  static double TimeToUTCVariantTime(const base::Time& time);
65
66  typedef std::vector< ScopedComPtr<IChromeHistoryIndexer> > IndexerList;
67
68  // The list of indexers registered to receive history data from us.
69  IndexerList indexers_;
70
71  // The Registry key under HKCU where the indexers need to register their
72  // CLSID.
73  static const wchar_t* const kRegKeyRegisteredIndexersInfo;
74#endif
75
76  // The format of the thumbnail we pass to indexers.
77  static const char* const kThumbnailImageFormat;
78
79  DISALLOW_COPY_AND_ASSIGN(HistoryPublisher);
80};
81
82}  // namespace history
83
84#endif  // CHROME_BROWSER_HISTORY_HISTORY_PUBLISHER_H_
85