1// Copyright 2014 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// KeywordExtensionsDelegateImpl contains the extensions-only logic used by
6// KeywordProvider. Overrides KeywordExtensionsDelegate which does nothing.
7
8#ifndef CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_EXTENSIONS_DELEGATE_IMPL_H_
9#define CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_EXTENSIONS_DELEGATE_IMPL_H_
10
11#include <vector>
12
13#include "base/compiler_specific.h"
14#include "components/omnibox/autocomplete_input.h"
15#include "components/omnibox/autocomplete_match.h"
16#include "components/omnibox/autocomplete_provider_listener.h"
17#include "components/omnibox/keyword_extensions_delegate.h"
18#include "components/omnibox/keyword_provider.h"
19#include "content/public/browser/notification_observer.h"
20#include "content/public/browser/notification_registrar.h"
21
22#if !defined(ENABLE_EXTENSIONS)
23#error "Should not be included when extensions are disabled"
24#endif
25
26class Profile;
27
28class KeywordExtensionsDelegateImpl : public KeywordExtensionsDelegate,
29                                      public content::NotificationObserver {
30 public:
31  KeywordExtensionsDelegateImpl(Profile* profile, KeywordProvider* provider);
32  virtual ~KeywordExtensionsDelegateImpl();
33
34 private:
35  // KeywordExtensionsDelegate:
36  virtual void IncrementInputId() OVERRIDE;
37  virtual bool IsEnabledExtension(const std::string& extension_id) OVERRIDE;
38  virtual bool Start(const AutocompleteInput& input,
39                     bool minimal_changes,
40                     const TemplateURL* template_url,
41                     const base::string16& remaining_input) OVERRIDE;
42  virtual void EnterExtensionKeywordMode(
43      const std::string& extension_id) OVERRIDE;
44  virtual void MaybeEndExtensionKeywordMode() OVERRIDE;
45
46  // content::NotificationObserver:
47  virtual void Observe(int type,
48                       const content::NotificationSource& source,
49                       const content::NotificationDetails& details) OVERRIDE;
50
51  ACMatches* matches() { return &provider_->matches_; }
52  void set_done(bool done) {
53    provider_->done_ = done;
54  }
55
56  // Notifies the KeywordProvider about asynchronous updates from the extension.
57  void OnProviderUpdate(bool updated_matches);
58
59  // Identifies the current input state. This is incremented each time the
60  // autocomplete edit's input changes in any way. It is used to tell whether
61  // suggest results from the extension are current.
62  int current_input_id_;
63
64  // The input state at the time we last asked the extension for suggest
65  // results.
66  AutocompleteInput extension_suggest_last_input_;
67
68  // We remember the last suggestions we've received from the extension in case
69  // we need to reset our matches without asking the extension again.
70  std::vector<AutocompleteMatch> extension_suggest_matches_;
71
72  // If non-empty, holds the ID of the extension whose keyword is currently in
73  // the URL bar while the autocomplete popup is open.
74  std::string current_keyword_extension_id_;
75
76  Profile* profile_;
77
78  // The owner of this class.
79  KeywordProvider* provider_;
80
81  content::NotificationRegistrar registrar_;
82
83  // We need our input IDs to be unique across all profiles, so we keep a global
84  // UID that each provider uses.
85  static int global_input_uid_;
86
87  DISALLOW_COPY_AND_ASSIGN(KeywordExtensionsDelegateImpl);
88};
89
90#endif  // CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_EXTENSIONS_DELEGATE_IMPL_H_
91