components/bookmarks/browser/bookmark_utils.h

   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 COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_UTILS_H_
   6 #define COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_UTILS_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/strings/string16.h"
  12 #include "base/strings/utf_offset_string_conversions.h"
  13 #include "components/bookmarks/browser/bookmark_node_data.h"
  14
  15 class GURL;
  16
  17 namespace user_prefs {
  18 class PrefRegistrySyncable;
  19 }
  20
  21 // A collection of bookmark utility functions used by various parts of the UI
  22 // that show bookmarks (bookmark manager, bookmark bar view, ...) and other
  23 // systems that involve indexing and searching bookmarks.
  24 namespace bookmarks {
  25
  26 class BookmarkClient;
  27 class BookmarkModel;
  28 class BookmarkNode;
  29
  30 // Fields to use when finding matching bookmarks.
  31 struct QueryFields {
  32   QueryFields();
  33   ~QueryFields();
  34
  35   scoped_ptr<base::string16> word_phrase_query;
  36   scoped_ptr<base::string16> url;
  37   scoped_ptr<base::string16> title;
  38 };
  39
  40 // Clones bookmark node, adding newly created nodes to |parent| starting at
  41 // |index_to_add_at|. If |reset_node_times| is true cloned bookmarks and
  42 // folders will receive new creation times and folder modification times
  43 // instead of using the values stored in |elements|.
  44 void CloneBookmarkNode(BookmarkModel* model,
  45                        const std::vector<BookmarkNodeData::Element>& elements,
  46                        const BookmarkNode* parent,
  47                        int index_to_add_at,
  48                        bool reset_node_times);
  49
  50 // Copies nodes onto the clipboard. If |remove_nodes| is true the nodes are
  51 // removed after copied to the clipboard. The nodes are copied in such a way
  52 // that if pasted again copies are made.
  53 void CopyToClipboard(BookmarkModel* model,
  54                      const std::vector<const BookmarkNode*>& nodes,
  55                      bool remove_nodes);
  56
  57 // Pastes from the clipboard. The new nodes are added to |parent|, unless
  58 // |parent| is null in which case this does nothing. The nodes are inserted
  59 // at |index|. If |index| is -1 the nodes are added to the end.
  60 void PasteFromClipboard(BookmarkModel* model,
  61                         const BookmarkNode* parent,
  62                         int index);
  63
  64 // Returns true if the user can copy from the pasteboard.
  65 bool CanPasteFromClipboard(BookmarkModel* model, const BookmarkNode* node);
  66
  67 // Returns a vector containing up to |max_count| of the most recently modified
  68 // user folders. This never returns an empty vector.
  69 std::vector<const BookmarkNode*> GetMostRecentlyModifiedUserFolders(
  70     BookmarkModel* model, size_t max_count);
  71
  72 // Returns the most recently added bookmarks. This does not return folders,
  73 // only nodes of type url.
  74 void GetMostRecentlyAddedEntries(BookmarkModel* model,
  75                                  size_t count,
  76                                  std::vector<const BookmarkNode*>* nodes);
  77
  78 // Returns true if |n1| was added more recently than |n2|.
  79 bool MoreRecentlyAdded(const BookmarkNode* n1, const BookmarkNode* n2);
  80
  81 // Returns up to |max_count| bookmarks from |model| whose url or title contain
  82 // the text |query.word_phrase_query| and exactly match |query.url| and
  83 // |query.title|, for all of the preceding fields that are not NULL.
  84 // |languages| is user's accept-language setting to decode IDN.
  85 void GetBookmarksMatchingProperties(BookmarkModel* model,
  86                                     const QueryFields& query,
  87                                     size_t max_count,
  88                                     const std::string& languages,
  89                                     std::vector<const BookmarkNode*>* nodes);
  90
  91 // Register user preferences for Bookmarks Bar.
  92 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  93
  94 // Returns the parent for newly created folders/bookmarks. If |selection| has
  95 // one element and it is a folder, |selection[0]| is returned, otherwise
  96 // |parent| is returned. If |index| is non-null it is set to the index newly
  97 // added nodes should be added at.
  98 const BookmarkNode* GetParentForNewNodes(
  99     const BookmarkNode* parent,
 100     const std::vector<const BookmarkNode*>& selection,
 101     int* index);
 102
 103 // Deletes the bookmark folders for the given list of |ids|.
 104 void DeleteBookmarkFolders(BookmarkModel* model, const std::vector<int64>& ids);
 105
 106 // If there are no user bookmarks for url, a bookmark is created.
 107 void AddIfNotBookmarked(BookmarkModel* model,
 108                         const GURL& url,
 109                         const base::string16& title);
 110
 111 // Removes all bookmarks for the given |url|.
 112 void RemoveAllBookmarks(BookmarkModel* model, const GURL& url);
 113
 114 // Truncates an overly-long URL, unescapes it and interprets the characters
 115 // as UTF-8 (both via url_formatter::FormatUrl()), and lower-cases it, returning
 116 // the result.  |languages| is passed to url_formatter::FormatUrl().
 117 // |adjustments|, if non-NULL, is set to reflect the transformations the URL
 118 // spec underwent to become the return value.  If a caller computes offsets
 119 // (e.g., for the position of matched text) in this cleaned-up string, it can
 120 // use |adjustments| to calculate the location of these offsets in the original
 121 // string (via base::OffsetAdjuster::UnadjustOffsets()).  This is useful if
 122 // later the original string gets formatted in a different way for displaying.
 123 // In this case, knowing the offsets in the original string will allow them to
 124 // be properly translated to offsets in the newly-formatted string.
 125 //
 126 // The unescaping done by this function makes it possible to match substrings
 127 // that were originally escaped for navigation; for example, if the user
 128 // searched for "a&p", the query would be escaped as "a%26p", so without
 129 // unescaping, an input string of "a&p" would no longer match this URL.  Note
 130 // that the resulting unescaped URL may not be directly navigable (which is
 131 // why it was escaped to begin with).
 132 base::string16 CleanUpUrlForMatching(
 133     const GURL& gurl,
 134     const std::string& languages,
 135     base::OffsetAdjuster::Adjustments* adjustments);
 136
 137 // Returns the lower-cased title, possibly truncated if the original title
 138 // is overly-long.
 139 base::string16 CleanUpTitleForMatching(const base::string16& title);
 140
 141 // Returns true if all the |nodes| can be edited by the user,
 142 // as determined by BookmarkClient::CanBeEditedByUser().
 143 bool CanAllBeEditedByUser(BookmarkClient* client,
 144                           const std::vector<const BookmarkNode*>& nodes);
 145
 146 // Returns true if |url| has a bookmark in the |model| that can be edited
 147 // by the user.
 148 bool IsBookmarkedByUser(BookmarkModel* model, const GURL& url);
 149
 150 // Returns the node with |id|, or NULL if there is no node with |id|.
 151 const BookmarkNode* GetBookmarkNodeByID(const BookmarkModel* model, int64 id);
 152
 153 // Returns true if |node| is a descendant of |root|.
 154 bool IsDescendantOf(const BookmarkNode* node, const BookmarkNode* root);
 155
 156 // Returns true if any node in |list| is a descendant of |root|.
 157 bool HasDescendantsOf(const std::vector<const BookmarkNode*>& list,
 158                       const BookmarkNode* root);
 159
 160 }  // namespace bookmarks
 161
 162 #endif  // COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_UTILS_H_