Componentize ScoredHistoryMatch

components/history/core/browser/scored_history_match_client.h

Index: components/history/core/browser/scored_history_match_client.h
diff --git a/components/history/core/browser/scored_history_match_client.h b/components/history/core/browser/scored_history_match_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..14ac5a0bb54b2ac00d1dd20030a7c0cb53523a7a
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+++ b/components/history/core/browser/scored_history_match_client.h
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+// Copyright 2015 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 COMPONENTS_HISTORY_CORE_BROWSER_SCORED_HISTORY_MATCH_CLIENT_H_
+#define COMPONENTS_HISTORY_CORE_BROWSER_SCORED_HISTORY_MATCH_CLIENT_H_
+
+#include <vector>
+
+#include "base/macros.h"
+#include "base/strings/string16.h"
+#include "base/strings/utf_offset_string_conversions.h"
+
+class GURL;
+
+namespace history {
+
+class ScoredHistoryMatchClient {
+ public:
+  ScoredHistoryMatchClient();
+  virtual ~ScoredHistoryMatchClient();
+
+  // Returns whether the URL is bookmarked or not.
+  virtual bool IsBoomarked(const GURL& url) const = 0;
+
+  // Score for untyped visit to bookmarked pages (as opposed to 1 for
+  // untyped visits to non-bookmarked pages and 20 for typed visits).
+  virtual int BookmarkValue() const = 0;
+
+  // If true, allow input terms to match in the TLD (e.g., .com).
+  virtual bool AllowTldMatches() const = 0;
+
+  // If true, allow input terms to match in the scheme (e.g., http://).
+  virtual bool AllowSchemeMatches() const = 0;
+
+  // Returns whether an autocomplete match can be inlined. If |innermost_match|
+  // is non-null it will be set to true if the best prefix is the innermost one.
+  virtual bool CanInlineAutocompleteMatch(const GURL& url,
+                                          const base::string16& term,
+                                          bool* innermost_match) const = 0;
+
+  // Cleans up URL and title for matching, returning the cleaned up URL.
+  // |languages| is passed to net::FormatURL(). |adjustments|, if non-null, is
+  // set to reflect the transformations the URL spec underwent to become the
+  // return value. |title|, if non-null, is cleaned up in-place.
+  virtual base::string16 CleanUpUrlAndTitleForMatching(
+      const GURL& url,
+      const std::string& languages,
+      base::OffsetAdjuster::Adjustments* adjustments,
+      base::string16* title) const = 0;
+
+  // Converts a raw score (a weighted sum of the number of hits for the term,
+  // weigthed by how important the hit is: hostname, path, etc.) to the
+  // topicality score we should assign it.
+  float GetTopicalityScoreFromRawScore(int raw_score) const;
+
+  // Returns the recency score to assign depending on how long ago a page was
+  // visited (in days).
+  float GetRecencyScore(int last_visit_days_ago) const;
+
+ private:
+  // Pre-computed information for |GetTopicalityScoreFromRawScore()| and
+  // |GetRecencyScore()| respectively.
+  std::vector<float> raw_score_to_topicality_score_;
+  std::vector<float> days_ago_to_recency_score_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScoredHistoryMatchClient);
+};
+
+}  // namespace history
+
+#endif  // COMPONENTS_HISTORY_CORE_BROWSER_SCORED_HISTORY_MATCH_CLIENT_H_