search_controller.cc revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9 
1// Copyright 2013 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#include "chrome/browser/ui/app_list/search/search_controller.h"
6
7#include <algorithm>
8#include <vector>
9
10#include "base/bind.h"
11#include "base/command_line.h"
12#include "base/memory/scoped_ptr.h"
13#include "base/metrics/histogram.h"
14#include "base/strings/string_util.h"
15#include "base/strings/utf_string_conversions.h"
16#include "chrome/browser/profiles/profile.h"
17#include "chrome/browser/ui/app_list/search/app_search_provider.h"
18#include "chrome/browser/ui/app_list/search/chrome_search_result.h"
19#include "chrome/browser/ui/app_list/search/history.h"
20#include "chrome/browser/ui/app_list/search/history_factory.h"
21#include "chrome/browser/ui/app_list/search/omnibox_provider.h"
22#include "chrome/browser/ui/app_list/search/people/people_provider.h"
23#include "chrome/browser/ui/app_list/search/search_provider.h"
24#include "chrome/browser/ui/app_list/search/webstore/webstore_provider.h"
25#include "chrome/browser/ui/app_list/start_page_service.h"
26#include "chrome/common/chrome_switches.h"
27#include "content/public/browser/user_metrics.h"
28#include "grit/generated_resources.h"
29#include "grit/theme_resources.h"
30#include "ui/app_list/search_box_model.h"
31#include "ui/app_list/speech_ui_model.h"
32#include "ui/base/l10n/l10n_util.h"
33#include "ui/base/resource/resource_bundle.h"
34
35namespace {
36  const char kAppListSearchResultOpenTypeHistogram[] =
37      "Apps.AppListSearchResultOpenType";
38}
39
40namespace app_list {
41
42SearchController::SearchController(Profile* profile,
43                                   SearchBoxModel* search_box,
44                                   AppListModel::SearchResults* results,
45                                   SpeechUIModel* speech_ui,
46                                   AppListControllerDelegate* list_controller)
47  : profile_(profile),
48    search_box_(search_box),
49    speech_ui_(speech_ui),
50    list_controller_(list_controller),
51    dispatching_query_(false),
52    mixer_(new Mixer(results)),
53    history_(HistoryFactory::GetForBrowserContext(profile)) {
54  speech_ui_->AddObserver(this);
55  Init();
56}
57
58SearchController::~SearchController() {
59  speech_ui_->RemoveObserver(this);
60}
61
62void SearchController::Init() {
63  ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
64  search_box_->SetIcon(*bundle.GetImageSkiaNamed(IDR_OMNIBOX_SEARCH));
65  StartPageService* service = StartPageService::Get(profile_);
66  if (service && service->GetSpeechRecognitionContents()) {
67    search_box_->SetSpeechRecognitionButton(
68        scoped_ptr<SearchBoxModel::SpeechButtonProperty>(
69            new SearchBoxModel::SpeechButtonProperty(
70                *bundle.GetImageSkiaNamed(IDR_OMNIBOX_MIC_SEARCH),
71                l10n_util::GetStringUTF16(
72                    IDS_APP_LIST_HOTWORD_LISTENING),
73                *bundle.GetImageSkiaNamed(IDR_APP_LIST_MIC_HOTWORD_OFF),
74                l10n_util::GetStringUTF16(
75                    IDS_APP_LIST_START_SPEECH_RECOGNITION))));
76  }
77  OnSpeechRecognitionStateChanged(speech_ui_->state());
78
79  mixer_->Init();
80
81  AddProvider(Mixer::MAIN_GROUP, scoped_ptr<SearchProvider>(
82      new AppSearchProvider(profile_, list_controller_)).Pass());
83  AddProvider(Mixer::OMNIBOX_GROUP, scoped_ptr<SearchProvider>(
84      new OmniboxProvider(profile_)).Pass());
85  AddProvider(Mixer::WEBSTORE_GROUP, scoped_ptr<SearchProvider>(
86      new WebstoreProvider(profile_, list_controller_)).Pass());
87  if (!CommandLine::ForCurrentProcess()->HasSwitch(
88            switches::kDisablePeopleSearch)) {
89    AddProvider(Mixer::PEOPLE_GROUP, scoped_ptr<SearchProvider>(
90        new PeopleProvider(profile_)).Pass());
91  }
92}
93
94void SearchController::Start() {
95  Stop();
96
97  base::string16 query;
98  base::TrimWhitespace(search_box_->text(), base::TRIM_ALL, &query);
99
100  dispatching_query_ = true;
101  for (Providers::iterator it = providers_.begin();
102       it != providers_.end();
103       ++it) {
104    (*it)->Start(query);
105  }
106  dispatching_query_ = false;
107
108  OnResultsChanged();
109
110  // Maximum time (in milliseconds) to wait to the search providers to finish.
111  const int kStopTimeMS = 1500;
112  stop_timer_.Start(FROM_HERE,
113                    base::TimeDelta::FromMilliseconds(kStopTimeMS),
114                    base::Bind(&SearchController::Stop,
115                               base::Unretained(this)));
116}
117
118void SearchController::Stop() {
119  stop_timer_.Stop();
120
121  for (Providers::iterator it = providers_.begin();
122       it != providers_.end();
123       ++it) {
124    (*it)->Stop();
125  }
126}
127
128void SearchController::OpenResult(SearchResult* result, int event_flags) {
129  // Count AppList.Search here because it is composed of search + action.
130  content::RecordAction(base::UserMetricsAction("AppList_Search"));
131
132  ChromeSearchResult* chrome_result =
133      static_cast<app_list::ChromeSearchResult*>(result);
134  UMA_HISTOGRAM_ENUMERATION(kAppListSearchResultOpenTypeHistogram,
135                            chrome_result->GetType(),
136                            SEARCH_RESULT_TYPE_BOUNDARY);
137  chrome_result->Open(event_flags);
138
139  if (history_ && history_->IsReady()) {
140    history_->AddLaunchEvent(base::UTF16ToUTF8(search_box_->text()),
141                             chrome_result->id());
142  }
143}
144
145void SearchController::InvokeResultAction(SearchResult* result,
146                                          int action_index,
147                                          int event_flags) {
148  // TODO(xiyuan): Hook up with user learning.
149  static_cast<app_list::ChromeSearchResult*>(result)->InvokeAction(
150      action_index, event_flags);
151}
152
153void SearchController::AddProvider(Mixer::GroupId group,
154                                   scoped_ptr<SearchProvider> provider) {
155  provider->set_result_changed_callback(base::Bind(
156      &SearchController::OnResultsChanged,
157      base::Unretained(this)));
158  mixer_->AddProviderToGroup(group, provider.get());
159  providers_.push_back(provider.release());  // Takes ownership.
160}
161
162void SearchController::OnResultsChanged() {
163  if (dispatching_query_)
164    return;
165
166  KnownResults known_results;
167  if (history_ && history_->IsReady()) {
168    history_->GetKnownResults(base::UTF16ToUTF8(search_box_->text()))
169        ->swap(known_results);
170  }
171
172  mixer_->MixAndPublish(known_results);
173}
174
175void SearchController::OnSpeechRecognitionStateChanged(
176    SpeechRecognitionState new_state) {
177  search_box_->SetHintText(l10n_util::GetStringUTF16(
178      (new_state == SPEECH_RECOGNITION_HOTWORD_LISTENING) ?
179      IDS_SEARCH_BOX_HOTWORD_HINT : IDS_SEARCH_BOX_HINT));
180}
181
182}  // namespace app_list
183