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/content_settings/content_settings_provider.h"
11 #include "chrome/browser/content_settings/host_content_settings_map.h"
12 #include "chrome/browser/platform_util.h"
13 #include "chrome/browser/profiles/profile.h"
14 #include "chrome/browser/search/instant_service.h"
15 #include "chrome/browser/search/instant_service_factory.h"
16 #include "chrome/browser/search/search.h"
17 #include "chrome/browser/search_engines/template_url_service.h"
18 #include "chrome/browser/search_engines/template_url_service_factory.h"
19 #include "chrome/browser/ui/browser_instant_controller.h"
20 #include "chrome/browser/ui/search/instant_tab.h"
21 #include "chrome/browser/ui/search/search_tab_helper.h"
22 #include "chrome/common/chrome_switches.h"
23 #include "chrome/common/content_settings_types.h"
24 #include "chrome/common/pref_names.h"
25 #include "chrome/common/search_urls.h"
26 #include "chrome/common/url_constants.h"
27 #include "components/sessions/serialized_navigation_entry.h"
28 #include "content/public/browser/navigation_entry.h"
29 #include "content/public/browser/notification_service.h"
30 #include "content/public/browser/render_process_host.h"
31 #include "content/public/browser/render_widget_host_view.h"
32 #include "content/public/browser/web_contents.h"
33 #include "net/base/escape.h"
34 #include "net/base/network_change_notifier.h"
35 #include "url/gurl.h"
36
37 #if defined(TOOLKIT_VIEWS)
38 #include "ui/views/widget/widget.h"
39 #endif
40
41 namespace {
42
IsContentsFrom(const InstantPage * page,const content::WebContents * contents)43 bool IsContentsFrom(const InstantPage* page,
44 const content::WebContents* contents) {
45 return page && (page->contents() == contents);
46 }
47
48 // Adds a transient NavigationEntry to the supplied |contents|'s
49 // NavigationController if the page's URL has not already been updated with the
50 // supplied |search_terms|. Sets the |search_terms| on the transient entry for
51 // search terms extraction to work correctly.
EnsureSearchTermsAreSet(content::WebContents * contents,const base::string16 & search_terms)52 void EnsureSearchTermsAreSet(content::WebContents* contents,
53 const base::string16& search_terms) {
54 content::NavigationController* controller = &contents->GetController();
55
56 // If search terms are already correct or there is already a transient entry
57 // (there shouldn't be), bail out early.
58 if (chrome::GetSearchTerms(contents) == search_terms ||
59 controller->GetTransientEntry())
60 return;
61
62 const content::NavigationEntry* entry = controller->GetLastCommittedEntry();
63 content::NavigationEntry* transient = controller->CreateNavigationEntry(
64 entry->GetURL(),
65 entry->GetReferrer(),
66 entry->GetTransitionType(),
67 false,
68 std::string(),
69 contents->GetBrowserContext());
70 transient->SetExtraData(sessions::kSearchTermsKey, search_terms);
71 controller->SetTransientEntry(transient);
72
73 SearchTabHelper::FromWebContents(contents)->NavigationEntryUpdated();
74 }
75
76 } // namespace
77
InstantController(BrowserInstantController * browser)78 InstantController::InstantController(BrowserInstantController* browser)
79 : browser_(browser) {
80 }
81
~InstantController()82 InstantController::~InstantController() {
83 }
84
SubmitQuery(const base::string16 & search_terms)85 bool InstantController::SubmitQuery(const base::string16& search_terms) {
86 if (instant_tab_ && instant_tab_->supports_instant() &&
87 search_mode_.is_origin_search()) {
88 // Use |instant_tab_| to run the query if we're already on a search results
89 // page. (NOTE: in particular, we do not send the query to NTPs.)
90 SearchTabHelper::FromWebContents(instant_tab_->contents())->Submit(
91 search_terms);
92 instant_tab_->contents()->Focus();
93 EnsureSearchTermsAreSet(instant_tab_->contents(), search_terms);
94 return true;
95 }
96 return false;
97 }
98
SearchModeChanged(const SearchMode & old_mode,const SearchMode & new_mode)99 void InstantController::SearchModeChanged(const SearchMode& old_mode,
100 const SearchMode& new_mode) {
101 LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf(
102 "SearchModeChanged: [origin:mode] %d:%d to %d:%d", old_mode.origin,
103 old_mode.mode, new_mode.origin, new_mode.mode));
104
105 search_mode_ = new_mode;
106 ResetInstantTab();
107 }
108
ActiveTabChanged()109 void InstantController::ActiveTabChanged() {
110 LOG_INSTANT_DEBUG_EVENT(this, "ActiveTabChanged");
111 ResetInstantTab();
112 }
113
TabDeactivated(content::WebContents * contents)114 void InstantController::TabDeactivated(content::WebContents* contents) {
115 // If user is deactivating an NTP tab, log the number of mouseovers for this
116 // NTP session.
117 if (chrome::IsInstantNTP(contents))
118 InstantTab::EmitNtpStatistics(contents);
119 }
120
LogDebugEvent(const std::string & info) const121 void InstantController::LogDebugEvent(const std::string& info) const {
122 DVLOG(1) << info;
123
124 debug_events_.push_front(std::make_pair(
125 base::Time::Now().ToInternalValue(), info));
126 static const size_t kMaxDebugEventSize = 2000;
127 if (debug_events_.size() > kMaxDebugEventSize)
128 debug_events_.pop_back();
129 }
130
ClearDebugEvents()131 void InstantController::ClearDebugEvents() {
132 debug_events_.clear();
133 }
134
profile() const135 Profile* InstantController::profile() const {
136 return browser_->profile();
137 }
138
instant_tab() const139 InstantTab* InstantController::instant_tab() const {
140 return instant_tab_.get();
141 }
142
InstantSupportChanged(InstantSupportState instant_support)143 void InstantController::InstantSupportChanged(
144 InstantSupportState instant_support) {
145 // Handle INSTANT_SUPPORT_YES here because InstantPage is not hooked up to the
146 // active tab. Search model changed listener in InstantPage will handle other
147 // cases.
148 if (instant_support != INSTANT_SUPPORT_YES)
149 return;
150
151 ResetInstantTab();
152 }
153
InstantSupportDetermined(const content::WebContents * contents,bool supports_instant)154 void InstantController::InstantSupportDetermined(
155 const content::WebContents* contents,
156 bool supports_instant) {
157 DCHECK(IsContentsFrom(instant_tab(), contents));
158
159 if (!supports_instant)
160 base::MessageLoop::current()->DeleteSoon(FROM_HERE, instant_tab_.release());
161
162 content::NotificationService::current()->Notify(
163 chrome::NOTIFICATION_INSTANT_TAB_SUPPORT_DETERMINED,
164 content::Source<InstantController>(this),
165 content::NotificationService::NoDetails());
166 }
167
InstantPageAboutToNavigateMainFrame(const content::WebContents * contents,const GURL & url)168 void InstantController::InstantPageAboutToNavigateMainFrame(
169 const content::WebContents* contents,
170 const GURL& url) {
171 DCHECK(IsContentsFrom(instant_tab(), contents));
172
173 // The Instant tab navigated. Send it the data it needs to display
174 // properly.
175 UpdateInfoForInstantTab();
176 }
177
ResetInstantTab()178 void InstantController::ResetInstantTab() {
179 if (!search_mode_.is_origin_default()) {
180 content::WebContents* active_tab = browser_->GetActiveWebContents();
181 if (!instant_tab_ || active_tab != instant_tab_->contents()) {
182 instant_tab_.reset(new InstantTab(this, browser_->profile()));
183 instant_tab_->Init(active_tab);
184 UpdateInfoForInstantTab();
185 }
186 } else {
187 instant_tab_.reset();
188 }
189 }
190
UpdateInfoForInstantTab()191 void InstantController::UpdateInfoForInstantTab() {
192 if (instant_tab_) {
193 // Update theme details.
194 InstantService* instant_service = GetInstantService();
195 if (instant_service) {
196 instant_service->UpdateThemeInfo();
197 instant_service->UpdateMostVisitedItemsInfo();
198 }
199 }
200 }
201
GetInstantService() const202 InstantService* InstantController::GetInstantService() const {
203 return InstantServiceFactory::GetForProfile(profile());
204 }
205