NTP Zombie Code Slayer II: Suggestions Page

chrome/browser/ui/webui/ntp/suggestions_source_top_sites.h

-// Copyright (c) 2012 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_UI_WEBUI_NTP_SUGGESTIONS_SOURCE_TOP_SITES_H_
-#define CHROME_BROWSER_UI_WEBUI_NTP_SUGGESTIONS_SOURCE_TOP_SITES_H_
-
-#include <deque>
-
-#include "base/basictypes.h"
-#include "base/task/cancelable_task_tracker.h"
-#include "chrome/browser/ui/webui/ntp/suggestions_source.h"
-#include "components/history/core/browser/history_types.h"
-#include "components/history/core/browser/visit_filter.h"
-
-class SuggestionsCombiner;
-class Profile;
-
-namespace base {
-class DictionaryValue;
-}
-
-// A SuggestionsSource that uses the local TopSites database to provide
-// suggestions.
-class SuggestionsSourceTopSites : public SuggestionsSource {
- public:
-  SuggestionsSourceTopSites();
-  ~SuggestionsSourceTopSites() override;
-
- protected:
-  // SuggestionsSource overrides:
-  void SetDebug(bool enable) override;
-  int GetWeight() override;
-  int GetItemCount() override;
-  base::DictionaryValue* PopItem() override;
-  void FetchItems(Profile* profile) override;
-  void SetCombiner(SuggestionsCombiner* combiner) override;
-
-  void OnSuggestionsUrlsAvailable(const history::FilteredURLList* data);
-
- private:
-
-  // Gets the sorting order from the command-line arguments. Defaults to
-  // |ORDER_BY_RECENCY| if there are no command-line argument specifying a
-  // sorting order.
-  static history::VisitFilter::SortingOrder GetSortingOrder();
-
-  // Gets the filter width from the command-line arguments. Defaults to one
-  // hour if there are no command-line argument setting the filter width.
-  static base::TimeDelta GetFilterWidth();
-
-  // Our combiner.
-  SuggestionsCombiner* combiner_;
-
-  // Keep the results of the db query here.
-  std::deque<base::DictionaryValue*> items_;
-
-  // Whether the source should provide additional debug information or not.
-  bool debug_;
-
-  base::CancelableTaskTracker history_tracker_;
-
-  DISALLOW_COPY_AND_ASSIGN(SuggestionsSourceTopSites);
-};
-
-#endif  // CHROME_BROWSER_UI_WEBUI_NTP_SUGGESTIONS_SOURCE_TOP_SITES_H_