1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_OMNIBOX_SEARCH_HINT_H_
6#define CHROME_BROWSER_OMNIBOX_SEARCH_HINT_H_
7#pragma once
8
9#include <map>
10#include <string>
11
12#include "content/common/notification_observer.h"
13#include "content/common/notification_registrar.h"
14
15class Profile;
16class TabContents;
17
18// This class is responsible for showing an info-bar that tells the user she
19// can type her search query directly in the omnibox.
20// It is displayed when the user visits a known search engine URL and has not
21// searched from the omnibox before, or has not previously dismissed a similar
22// info-bar.
23class OmniboxSearchHint : public NotificationObserver {
24 public:
25  explicit OmniboxSearchHint(TabContents* tab);
26  ~OmniboxSearchHint();
27
28  // NotificationObserver method:
29  virtual void Observe(NotificationType type,
30                       const NotificationSource& source,
31                       const NotificationDetails& details);
32
33  // Focus the location bar and displays a message instructing that search
34  // queries can be typed directly in there.
35  void ShowEnteringQuery();
36
37  TabContents* tab() { return tab_; }
38
39  // Disables the hint infobar permanently, so that it does not show ever again.
40  void DisableHint();
41
42  // Returns true if the profile and current environment make the showing of the
43  // hint infobar possible.
44  static bool IsEnabled(Profile* profile);
45
46 private:
47  void ShowInfoBar();
48
49  NotificationRegistrar notification_registrar_;
50
51  // The tab we are associated with.
52  TabContents* tab_;
53
54  // A map containing the URLs of the search engine for which we want to
55  // trigger the hint.
56  std::map<std::string, int> search_engine_urls_;
57
58  DISALLOW_COPY_AND_ASSIGN(OmniboxSearchHint);
59};
60
61#endif  // CHROME_BROWSER_OMNIBOX_SEARCH_HINT_H_
62