Move bookmarks' production code to components/bookmarks

chrome/browser/bookmarks/bookmark_index.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_BOOKMARKS_BOOKMARK_INDEX_H_
-#define CHROME_BROWSER_BOOKMARKS_BOOKMARK_INDEX_H_
-
-#include <map>
-#include <set>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/strings/string16.h"
-#include "components/query_parser/query_parser.h"
-
-class BookmarkClient;
-class BookmarkNode;
-struct BookmarkMatch;
-
-// BookmarkIndex maintains an index of the titles and URLs of bookmarks for
-// quick look up. BookmarkIndex is owned and maintained by BookmarkModel, you
-// shouldn't need to interact directly with BookmarkIndex.
-//
-// BookmarkIndex maintains the index (index_) as a map of sets. The map (type
-// Index) maps from a lower case string to the set (type NodeSet) of
-// BookmarkNodes that contain that string in their title or URL.
-class BookmarkIndex {
- public:
-  // |index_urls| says whether URLs should be stored in the index in addition
-  // to bookmark titles.  |languages| used to help parse IDNs in URLs for the
-  // bookmark index.
-  BookmarkIndex(BookmarkClient* client,
-                bool index_urls,
-                const std::string& languages);
-  ~BookmarkIndex();
-
-  // Invoked when a bookmark has been added to the model.
-  void Add(const BookmarkNode* node);
-
-  // Invoked when a bookmark has been removed from the model.
-  void Remove(const BookmarkNode* node);
-
-  // Returns up to |max_count| of bookmarks containing each term from
-  // the text |query| in either the title or the URL.
-  void GetBookmarksMatching(
-      const base::string16& query,
-      size_t max_count,
-      std::vector<BookmarkMatch>* results);
-
- private:
-  typedef std::vector<const BookmarkNode*> Nodes;
-  typedef std::set<const BookmarkNode*> NodeSet;
-  typedef std::map<base::string16, NodeSet> Index;
-
-  struct Match;
-  typedef std::vector<Match> Matches;
-
-  // Extracts |matches.nodes| into Nodes, sorts the pairs in decreasing order of
-  // typed count (if supported by the client), and then de-dupes the matches.
-  void SortMatches(const Matches& matches, Nodes* sorted_nodes) const;
-
-  // Add |node| to |results| if the node matches the query.
-  void AddMatchToResults(
-      const BookmarkNode* node,
-      query_parser::QueryParser* parser,
-      const query_parser::QueryNodeStarVector& query_nodes,
-      std::vector<BookmarkMatch>* results);
-
-  // Populates |matches| for the specified term. If |first_term| is true, this
-  // is the first term in the query. Returns true if there is at least one node
-  // matching the term.
-  bool GetBookmarksMatchingTerm(const base::string16& term,
-                                bool first_term,
-                                Matches* matches);
-
-  // Iterates over |matches| updating each Match's nodes to contain the
-  // intersection of the Match's current nodes and the nodes at |index_i|.
-  // If the intersection is empty, the Match is removed.
-  //
-  // This is invoked from GetBookmarksMatchingTerm.
-  void CombineMatchesInPlace(const Index::const_iterator& index_i,
-                             Matches* matches);
-
-  // Iterates over |current_matches| calculating the intersection between the
-  // Match's nodes and the nodes at |index_i|. If the intersection between the
-  // two is non-empty, a new match is added to |result|.
-  //
-  // This differs from CombineMatchesInPlace in that if the intersection is
-  // non-empty the result is added to result, not combined in place. This
-  // variant is used for prefix matching.
-  //
-  // This is invoked from GetBookmarksMatchingTerm.
-  void CombineMatches(const Index::const_iterator& index_i,
-                      const Matches& current_matches,
-                      Matches* result);
-
-  // Returns the set of query words from |query|.
-  std::vector<base::string16> ExtractQueryWords(const base::string16& query);
-
-  // Adds |node| to |index_|.
-  void RegisterNode(const base::string16& term, const BookmarkNode* node);
-
-  // Removes |node| from |index_|.
-  void UnregisterNode(const base::string16& term, const BookmarkNode* node);
-
-  Index index_;
-
-  BookmarkClient* const client_;
-
-  // Languages used to help parse IDNs in URLs for the bookmark index.
-  const std::string languages_;
-
-  // True if URLs are stored in the index as well as bookmark titles.
-  const bool index_urls_;
-
-  DISALLOW_COPY_AND_ASSIGN(BookmarkIndex);
-};
-
-#endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_INDEX_H_