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// 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_NAVIGATION_CORRECTION_TAB_OBSERVER_H_
#define CHROME_BROWSER_UI_NAVIGATION_CORRECTION_TAB_OBSERVER_H_
#include "base/prefs/pref_change_registrar.h"
#include "components/google/core/browser/google_url_tracker.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
class Profile;
namespace user_prefs {
class PrefRegistrySyncable;
}
// Per-tab class to implement navigation suggestion service functionality.
class NavigationCorrectionTabObserver
: public content::WebContentsObserver,
public content::WebContentsUserData<NavigationCorrectionTabObserver> {
public:
~NavigationCorrectionTabObserver() override;
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
private:
explicit NavigationCorrectionTabObserver(content::WebContents* web_contents);
friend class content::WebContentsUserData<NavigationCorrectionTabObserver>;
// content::WebContentsObserver overrides:
void RenderViewCreated(content::RenderViewHost* render_view_host) override;
// Internal helpers ----------------------------------------------------------
// Callback that is called when the Google URL is updated.
void OnGoogleURLUpdated();
// Returns the URL for the correction service. If the returned URL
// is empty, the default error pages will be used.
GURL GetNavigationCorrectionURL() const;
// Called when navigation corrections are enabled or disabled.
void OnEnabledChanged();
// Updates the renderer's navigation correction service configuration.
void UpdateNavigationCorrectionInfo(content::RenderViewHost* rvh);
Profile* profile_;
PrefChangeRegistrar pref_change_registrar_;
scoped_ptr<GoogleURLTracker::Subscription> google_url_updated_subscription_;
DISALLOW_COPY_AND_ASSIGN(NavigationCorrectionTabObserver);
};
#endif // CHROME_BROWSER_UI_NAVIGATION_CORRECTION_TAB_OBSERVER_H_
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