1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/browser_instant_controller.h"
#include "chrome/browser/browser_shutdown.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/instant/instant_controller.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_tabstrip.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/omnibox/location_bar.h"
#include "chrome/browser/ui/search/search_model.h"
#include "chrome/browser/ui/search/search_tab_helper.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/tab_contents/tab_contents.h"
#include "chrome/browser/ui/webui/ntp/app_launcher_handler.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/web_contents.h"
namespace {
// Returns true iff the search model for |tab| is in an NTP state, that is, a
// state in which the Instant overlay may be showing custom NTP content in
// EXTENDED mode.
bool IsSearchModelNTP(TabContents* tab) {
if (!tab || !tab->web_contents())
return false;
content::WebContents* web_contents = tab->web_contents();
chrome::search::SearchModel* model =
chrome::search::SearchTabHelper::FromWebContents(web_contents)->model();
return model && model->mode().is_ntp();
}
} // namespace
namespace chrome {
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, public:
BrowserInstantController::BrowserInstantController(Browser* browser)
: browser_(browser),
instant_unload_handler_(browser) {
profile_pref_registrar_.Init(browser_->profile()->GetPrefs());
profile_pref_registrar_.Add(prefs::kInstantEnabled, this);
ResetInstant();
browser_->tab_strip_model()->AddObserver(this);
browser_->search_model()->AddObserver(this);
}
BrowserInstantController::~BrowserInstantController() {
browser_->tab_strip_model()->RemoveObserver(this);
browser_->search_model()->RemoveObserver(this);
}
bool BrowserInstantController::OpenInstant(WindowOpenDisposition disposition) {
// NEW_BACKGROUND_TAB results in leaving the omnibox open, so we don't attempt
// to use the Instant preview.
if (!instant() || !instant_->IsCurrent() || disposition == NEW_BACKGROUND_TAB)
return false;
// The omnibox currently doesn't use other dispositions, so we don't attempt
// to handle them. If you hit this DCHECK file a bug and I'll (sky) add
// support for the new disposition.
DCHECK(disposition == CURRENT_TAB ||
disposition == NEW_FOREGROUND_TAB) << disposition;
instant_->CommitCurrentPreview(disposition == CURRENT_TAB ?
INSTANT_COMMIT_PRESSED_ENTER : INSTANT_COMMIT_PRESSED_ALT_ENTER);
return true;
}
void BrowserInstantController::CommitInstant(TabContents* preview,
bool in_new_tab) {
if (in_new_tab) {
// TabStripModel takes ownership of |preview|.
browser_->tab_strip_model()->AddTabContents(preview, -1,
instant_->last_transition_type(), TabStripModel::ADD_ACTIVE);
} else {
TabContents* active_tab = chrome::GetActiveTabContents(browser_);
int index = browser_->tab_strip_model()->GetIndexOfTabContents(active_tab);
DCHECK_NE(TabStripModel::kNoTab, index);
// TabStripModel takes ownership of |preview|.
browser_->tab_strip_model()->ReplaceTabContentsAt(index, preview);
// InstantUnloadHandler takes ownership of |active_tab|.
instant_unload_handler_.RunUnloadListenersOrDestroy(active_tab, index);
GURL url = preview->web_contents()->GetURL();
DCHECK(browser_->profile()->GetExtensionService());
if (browser_->profile()->GetExtensionService()->IsInstalledApp(url)) {
AppLauncherHandler::RecordAppLaunchType(
extension_misc::APP_LAUNCH_OMNIBOX_INSTANT);
}
}
}
void BrowserInstantController::SetInstantSuggestion(
const InstantSuggestion& suggestion) {
if (browser_->window()->GetLocationBar())
browser_->window()->GetLocationBar()->SetInstantSuggestion(suggestion);
}
gfx::Rect BrowserInstantController::GetInstantBounds() {
return browser_->window()->GetInstantBounds();
}
void BrowserInstantController::InstantPreviewFocused() {
// NOTE: This is only invoked on aura.
browser_->window()->WebContentsFocused(
instant_->GetPreviewContents()->web_contents());
}
TabContents* BrowserInstantController::GetActiveTabContents() const {
return chrome::GetActiveTabContents(browser_);
}
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, PrefObserver implementation:
void BrowserInstantController::OnPreferenceChanged(
PrefServiceBase* service,
const std::string& pref_name) {
DCHECK_EQ(std::string(prefs::kInstantEnabled), pref_name);
ResetInstant();
}
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, TabStripModelObserver implementation:
void BrowserInstantController::ActiveTabChanged(
TabContents* old_contents,
TabContents* new_contents,
int index,
bool user_gesture) {
if (instant()) {
const bool old_is_ntp = IsSearchModelNTP(old_contents);
const bool new_is_ntp = IsSearchModelNTP(new_contents);
// Do not hide Instant if switching from an NTP to another NTP since that
// would cause custom NTP content to flicker.
if (!(old_is_ntp && new_is_ntp))
instant()->Hide();
}
}
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, search::SearchModelObserver implementation:
void BrowserInstantController::ModeChanged(const search::Mode& old_mode,
const search::Mode& new_mode) {
if (instant() && old_mode.is_ntp() != new_mode.is_ntp())
instant_->OnActiveTabModeChanged(new_mode.is_ntp());
}
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, private:
void BrowserInstantController::ResetInstant() {
instant_.reset(
!browser_shutdown::ShuttingDownWithoutClosingBrowsers() &&
browser_->is_type_tabbed() ?
InstantController::CreateInstant(browser_->profile(), this) : NULL);
// Notify any observers that they need to reset.
content::NotificationService::current()->Notify(
chrome::NOTIFICATION_BROWSER_INSTANT_RESET,
content::Source<BrowserInstantController>(this),
content::NotificationService::NoDetails());
}
} // namespace chrome
|
