chrome/browser/ui/browser_instant_controller.h

// Copyright 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_BROWSER_INSTANT_CONTROLLER_H_
#define CHROME_BROWSER_UI_BROWSER_INSTANT_CONTROLLER_H_

#include <memory>

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "chrome/browser/search/search_engine_base_url_tracker.h"
#include "chrome/browser/ui/search/instant_controller.h"
#include "chrome/browser/ui/search/search_model_observer.h"

class Browser;
class Profile;

namespace content {
class WebContents;
}

class BrowserInstantController : public SearchModelObserver {
 public:
  explicit BrowserInstantController(Browser* browser);
  ~BrowserInstantController() override;

  // Returns the Profile associated with the Browser that owns this object.
  Profile* profile() const;

  InstantController* instant() { return &instant_; }

  // Invoked by |instant_| to get the currently active tab.
  content::WebContents* GetActiveWebContents() const;

  // Invoked by |browser_| when the active tab changes.
  void ActiveTabChanged();

 private:
  // SearchModelObserver:
  void ModelChanged(SearchModel::Origin old_origin,
                    SearchModel::Origin new_origin) override;

  void OnSearchEngineBaseURLChanged(
      SearchEngineBaseURLTracker::ChangeReason change_reason);

  Browser* const browser_;

  InstantController instant_;

  std::unique_ptr<SearchEngineBaseURLTracker> search_engine_base_url_tracker_;

  DISALLOW_COPY_AND_ASSIGN(BrowserInstantController);
};

#endif  // CHROME_BROWSER_UI_BROWSER_INSTANT_CONTROLLER_H_