1 // Copyright 2012 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/search/instant_controller.h"
6
7 #include "base/prefs/pref_service.h"
8 #include "base/strings/stringprintf.h"
9 #include "chrome/browser/chrome_notification_types.h"
10 #include "chrome/browser/platform_util.h"
11 #include "chrome/browser/profiles/profile.h"
12 #include "chrome/browser/search/instant_service.h"
13 #include "chrome/browser/search/instant_service_factory.h"
14 #include "chrome/browser/search/search.h"
15 #include "chrome/browser/search_engines/template_url_service_factory.h"
16 #include "chrome/browser/ui/browser_instant_controller.h"
17 #include "chrome/browser/ui/search/instant_tab.h"
18 #include "chrome/browser/ui/search/search_tab_helper.h"
19 #include "chrome/common/chrome_switches.h"
20 #include "chrome/common/pref_names.h"
21 #include "chrome/common/search_urls.h"
22 #include "chrome/common/url_constants.h"
23 #include "components/search_engines/template_url_service.h"
24 #include "components/sessions/serialized_navigation_entry.h"
25 #include "content/public/browser/navigation_entry.h"
26 #include "content/public/browser/notification_service.h"
27 #include "content/public/browser/render_process_host.h"
28 #include "content/public/browser/render_widget_host_view.h"
29 #include "content/public/browser/web_contents.h"
30 #include "net/base/escape.h"
31 #include "net/base/network_change_notifier.h"
32 #include "url/gurl.h"
33
34 #if defined(TOOLKIT_VIEWS)
35 #include "ui/views/widget/widget.h"
36 #endif
37
38 namespace {
39
IsContentsFrom(const InstantPage * page,const content::WebContents * contents)40 bool IsContentsFrom(const InstantPage* page,
41 const content::WebContents* contents) {
42 return page && (page->web_contents() == contents);
43 }
44
45 // Adds a transient NavigationEntry to the supplied |contents|'s
46 // NavigationController if the page's URL has not already been updated with the
47 // supplied |search_terms|. Sets the |search_terms| on the transient entry for
48 // search terms extraction to work correctly.
EnsureSearchTermsAreSet(content::WebContents * contents,const base::string16 & search_terms)49 void EnsureSearchTermsAreSet(content::WebContents* contents,
50 const base::string16& search_terms) {
51 content::NavigationController* controller = &contents->GetController();
52
53 // If search terms are already correct or there is already a transient entry
54 // (there shouldn't be), bail out early.
55 if (chrome::GetSearchTerms(contents) == search_terms ||
56 controller->GetTransientEntry())
57 return;
58
59 const content::NavigationEntry* entry = controller->GetLastCommittedEntry();
60 content::NavigationEntry* transient = controller->CreateNavigationEntry(
61 entry->GetURL(),
62 entry->GetReferrer(),
63 entry->GetTransitionType(),
64 false,
65 std::string(),
66 contents->GetBrowserContext());
67 transient->SetExtraData(sessions::kSearchTermsKey, search_terms);
68 controller->SetTransientEntry(transient);
69
70 SearchTabHelper::FromWebContents(contents)->NavigationEntryUpdated();
71 }
72
73 } // namespace
74
InstantController(BrowserInstantController * browser)75 InstantController::InstantController(BrowserInstantController* browser)
76 : browser_(browser) {
77 }
78
~InstantController()79 InstantController::~InstantController() {
80 }
81
SubmitQuery(const base::string16 & search_terms)82 bool InstantController::SubmitQuery(const base::string16& search_terms) {
83 if (instant_tab_ && instant_tab_->supports_instant() &&
84 search_mode_.is_origin_search()) {
85 // Use |instant_tab_| to run the query if we're already on a search results
86 // page. (NOTE: in particular, we do not send the query to NTPs.)
87 SearchTabHelper::FromWebContents(instant_tab_->web_contents())->Submit(
88 search_terms);
89 instant_tab_->web_contents()->Focus();
90 EnsureSearchTermsAreSet(instant_tab_->web_contents(), search_terms);
91 return true;
92 }
93 return false;
94 }
95
SearchModeChanged(const SearchMode & old_mode,const SearchMode & new_mode)96 void InstantController::SearchModeChanged(const SearchMode& old_mode,
97 const SearchMode& new_mode) {
98 LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf(
99 "SearchModeChanged: [origin:mode] %d:%d to %d:%d", old_mode.origin,
100 old_mode.mode, new_mode.origin, new_mode.mode));
101
102 search_mode_ = new_mode;
103 ResetInstantTab();
104 }
105
ActiveTabChanged()106 void InstantController::ActiveTabChanged() {
107 LOG_INSTANT_DEBUG_EVENT(this, "ActiveTabChanged");
108 ResetInstantTab();
109 }
110
TabDeactivated(content::WebContents * contents)111 void InstantController::TabDeactivated(content::WebContents* contents) {
112 // If user is deactivating an NTP tab, log the number of mouseovers for this
113 // NTP session.
114 if (chrome::IsInstantNTP(contents))
115 InstantTab::EmitNtpStatistics(contents);
116 }
117
LogDebugEvent(const std::string & info) const118 void InstantController::LogDebugEvent(const std::string& info) const {
119 DVLOG(1) << info;
120
121 debug_events_.push_front(std::make_pair(
122 base::Time::Now().ToInternalValue(), info));
123 static const size_t kMaxDebugEventSize = 2000;
124 if (debug_events_.size() > kMaxDebugEventSize)
125 debug_events_.pop_back();
126 }
127
ClearDebugEvents()128 void InstantController::ClearDebugEvents() {
129 debug_events_.clear();
130 }
131
profile() const132 Profile* InstantController::profile() const {
133 return browser_->profile();
134 }
135
instant_tab() const136 InstantTab* InstantController::instant_tab() const {
137 return instant_tab_.get();
138 }
139
InstantSupportChanged(InstantSupportState instant_support)140 void InstantController::InstantSupportChanged(
141 InstantSupportState instant_support) {
142 // Handle INSTANT_SUPPORT_YES here because InstantPage is not hooked up to the
143 // active tab. Search model changed listener in InstantPage will handle other
144 // cases.
145 if (instant_support != INSTANT_SUPPORT_YES)
146 return;
147
148 ResetInstantTab();
149 }
150
InstantSupportDetermined(const content::WebContents * contents,bool supports_instant)151 void InstantController::InstantSupportDetermined(
152 const content::WebContents* contents,
153 bool supports_instant) {
154 DCHECK(IsContentsFrom(instant_tab(), contents));
155
156 if (!supports_instant)
157 base::MessageLoop::current()->DeleteSoon(FROM_HERE, instant_tab_.release());
158
159 content::NotificationService::current()->Notify(
160 chrome::NOTIFICATION_INSTANT_TAB_SUPPORT_DETERMINED,
161 content::Source<InstantController>(this),
162 content::NotificationService::NoDetails());
163 }
164
InstantPageAboutToNavigateMainFrame(const content::WebContents * contents,const GURL & url)165 void InstantController::InstantPageAboutToNavigateMainFrame(
166 const content::WebContents* contents,
167 const GURL& url) {
168 DCHECK(IsContentsFrom(instant_tab(), contents));
169
170 // The Instant tab navigated. Send it the data it needs to display
171 // properly.
172 UpdateInfoForInstantTab();
173 }
174
ResetInstantTab()175 void InstantController::ResetInstantTab() {
176 if (!search_mode_.is_origin_default()) {
177 content::WebContents* active_tab = browser_->GetActiveWebContents();
178 if (!instant_tab_ || active_tab != instant_tab_->web_contents()) {
179 instant_tab_.reset(new InstantTab(this, browser_->profile()));
180 instant_tab_->Init(active_tab);
181 UpdateInfoForInstantTab();
182 }
183 } else {
184 instant_tab_.reset();
185 }
186 }
187
UpdateInfoForInstantTab()188 void InstantController::UpdateInfoForInstantTab() {
189 if (instant_tab_) {
190 // Update theme details.
191 InstantService* instant_service = GetInstantService();
192 if (instant_service) {
193 instant_service->UpdateThemeInfo();
194 instant_service->UpdateMostVisitedItemsInfo();
195 }
196 }
197 }
198
GetInstantService() const199 InstantService* InstantController::GetInstantService() const {
200 return InstantServiceFactory::GetForProfile(profile());
201 }
202