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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/flags/flags_ui.h"
#include <memory>
#include <string>
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/ref_counted_memory.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "build/build_config.h"
#include "chrome/browser/about_flags.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/flags/flags_ui_handler.h"
#include "chrome/common/pref_names.h"
#include "components/grit/components_scaled_resources.h"
#include "components/grit/flags_ui_resources.h"
#include "components/grit/flags_ui_resources_map.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/strings/grit/components_branded_strings.h"
#include "components/strings/grit/components_strings.h"
#include "components/version_info/version_info.h"
#include "components/webui/flags/flags_ui_constants.h"
#include "components/webui/flags/flags_ui_pref_names.h"
#include "components/webui/flags/pref_service_flags_storage.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "content/public/browser/web_ui_data_source.h"
#include "content/public/browser/web_ui_message_handler.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/webui/resources/grit/webui_resources.h"
#include "ui/webui/webui_util.h"
#if BUILDFLAG(IS_CHROMEOS)
#include "ash/constants/ash_switches.h"
#include "base/command_line.h"
#include "base/system/sys_info.h"
#include "chrome/browser/ash/login/session/user_session_manager.h"
#include "chrome/browser/ash/profiles/profile_helper.h"
#include "chrome/browser/infobars/simple_alert_infobar_creator.h"
#include "chrome/grit/generated_resources.h"
#include "chromeos/ash/components/settings/cros_settings.h"
#include "components/account_id/account_id.h"
#include "components/infobars/content/content_infobar_manager.h"
#include "components/infobars/core/simple_alert_infobar_delegate.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "components/user_manager/user_manager.h"
#include "components/vector_icons/vector_icons.h"
#endif
using content::WebContents;
using content::WebUIMessageHandler;
namespace {
content::WebUIDataSource* CreateAndAddFlagsUIHTMLSource(Profile* profile) {
content::WebUIDataSource* source = content::WebUIDataSource::CreateAndAdd(
profile, chrome::kChromeUIFlagsHost);
source->AddString(flags_ui::kVersion,
std::string(version_info::GetVersionNumber()));
#if BUILDFLAG(IS_CHROMEOS)
if (!user_manager::UserManager::Get()->IsCurrentUserOwner() &&
base::SysInfo::IsRunningOnChromeOS()) {
// Set the string to show which user can actually change the flags.
std::string owner;
ash::CrosSettings::Get()->GetString(ash::kDeviceOwner, &owner);
source->AddString("owner-warning",
l10n_util::GetStringFUTF16(IDS_FLAGS_UI_OWNER_WARNING,
base::UTF8ToUTF16(owner)));
} else {
source->AddString("owner-warning", std::u16string());
}
#endif
webui::SetupWebUIDataSource(source, kFlagsUiResources,
IDR_FLAGS_UI_FLAGS_HTML);
// Make it possible to test chrome://flags/deprecated
source->AddResourcePath("deprecated/test_loader.js",
IDR_WEBUI_JS_TEST_LOADER_JS);
source->AddResourcePath("deprecated/test_loader_util.js",
IDR_WEBUI_JS_TEST_LOADER_UTIL_JS);
source->AddResourcePath("deprecated/test_loader.html",
IDR_WEBUI_TEST_LOADER_HTML);
return source;
}
// On ChromeOS verifying if the owner is signed in is async operation and only
// after finishing it the UI can be properly populated. This function is the
// callback for whether the owner is signed in. It will respectively pick the
// proper PrefService for the flags interface.
void FinishInitialization(base::WeakPtr<FlagsUI> flags_ui,
Profile* profile,
FlagsUIHandler* dom_handler,
std::unique_ptr<flags_ui::FlagsStorage> storage,
flags_ui::FlagAccess access) {
// If the flags_ui has gone away, there's nothing to do.
if (!flags_ui) {
return;
}
// Note that |dom_handler| is owned by the web ui that owns |flags_ui|, so
// it is still alive if |flags_ui| is.
dom_handler->Init(std::move(storage), access);
#if BUILDFLAG(IS_CHROMEOS)
// Show a warning info bar when kSafeMode switch is present.
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
ash::switches::kSafeMode)) {
CreateSimpleAlertInfoBar(
infobars::ContentInfoBarManager::FromWebContents(
flags_ui->web_ui()->GetWebContents()),
infobars::InfoBarDelegate::BAD_FLAGS_INFOBAR_DELEGATE,
&vector_icons::kWarningIcon,
l10n_util::GetStringUTF16(IDS_FLAGS_IGNORED_DUE_TO_CRASHY_CHROME),
/*auto_expire=*/false, /*should_animate=*/true);
}
// Show a warning info bar for secondary users.
if (!ash::ProfileHelper::IsPrimaryProfile(profile)) {
CreateSimpleAlertInfoBar(
infobars::ContentInfoBarManager::FromWebContents(
flags_ui->web_ui()->GetWebContents()),
infobars::InfoBarDelegate::BAD_FLAGS_INFOBAR_DELEGATE,
&vector_icons::kWarningIcon,
l10n_util::GetStringUTF16(IDS_FLAGS_IGNORED_SECONDARY_USERS),
/*auto_expire=*/false, /*should_animate=*/true);
}
#endif
}
} // namespace
// static
void FlagsUI::AddStrings(content::WebUIDataSource* source) {
// Strings added here are all marked a non-translatable, so they are not
// actually localized.
static constexpr webui::LocalizedString kLocalizedStrings[] = {
{flags_ui::kFlagsRestartNotice, IDS_FLAGS_UI_RELAUNCH_NOTICE},
{"available", IDS_FLAGS_UI_AVAILABLE_FEATURE},
{"clear-search", IDS_FLAGS_UI_CLEAR_SEARCH},
{"disabled", IDS_FLAGS_UI_DISABLED_FEATURE},
{"enabled", IDS_FLAGS_UI_ENABLED_FEATURE},
{"experiment-enabled", IDS_FLAGS_UI_EXPERIMENT_ENABLED},
{"heading", IDS_FLAGS_UI_TITLE},
{"no-results", IDS_FLAGS_UI_NO_RESULTS},
{"not-available-platform", IDS_FLAGS_UI_NOT_AVAILABLE_ON_PLATFORM},
{"page-warning", IDS_FLAGS_UI_PAGE_WARNING},
{"page-warning-explanation", IDS_FLAGS_UI_PAGE_WARNING_EXPLANATION},
{"relaunch", IDS_FLAGS_UI_RELAUNCH},
{"reset", IDS_FLAGS_UI_PAGE_RESET},
{"reset-acknowledged", IDS_FLAGS_UI_RESET_ACKNOWLEDGED},
{"search-label", IDS_FLAGS_UI_SEARCH_LABEL},
{"search-placeholder", IDS_FLAGS_UI_SEARCH_PLACEHOLDER},
{"title", IDS_FLAGS_UI_TITLE},
{"unavailable", IDS_FLAGS_UI_UNAVAILABLE_FEATURE},
{"searchResultsSingular", IDS_FLAGS_UI_SEARCH_RESULTS_SINGULAR},
{"searchResultsPlural", IDS_FLAGS_UI_SEARCH_RESULTS_PLURAL},
// Strings that are slightly modified when on chrome://flags/deprecated.
{"deprecatedHeading", IDS_DEPRECATED_FEATURES_HEADING},
{"deprecatedNoResults", IDS_DEPRECATED_FEATURES_NO_RESULTS},
{"deprecatedPageWarningExplanation",
IDS_DEPRECATED_FEATURES_PAGE_WARNING_EXPLANATION},
{"deprecatedSearchPlaceholder",
IDS_DEPRECATED_FEATURES_SEARCH_PLACEHOLDER},
{"deprecatedTitle", IDS_DEPRECATED_FEATURES_TITLE}};
source->AddLocalizedStrings(kLocalizedStrings);
}
FlagsUIHandler* InitializeHandler(content::WebUI* web_ui,
Profile* profile,
base::WeakPtrFactory<FlagsUI>& weak_factory) {
auto handler_owner = std::make_unique<FlagsUIHandler>();
FlagsUIHandler* handler = handler_owner.get();
web_ui->AddMessageHandler(std::move(handler_owner));
about_flags::GetStorage(
profile, base::BindOnce(&FinishInitialization, weak_factory.GetWeakPtr(),
profile, handler));
return handler;
}
FlagsUI::FlagsUI(content::WebUI* web_ui)
: WebUIController(web_ui), weak_factory_(this) {
Profile* profile = Profile::FromWebUI(web_ui);
auto* handler = InitializeHandler(web_ui, profile, weak_factory_);
DCHECK(handler);
// Set up the about:flags source.
content::WebUIDataSource* source = CreateAndAddFlagsUIHTMLSource(profile);
AddStrings(source);
}
FlagsUI::~FlagsUI() = default;
// static
base::RefCountedMemory* FlagsUI::GetFaviconResourceBytes(
ui::ResourceScaleFactor scale_factor) {
return ui::ResourceBundle::GetSharedInstance().LoadDataResourceBytesForScale(
IDR_FLAGS_FAVICON, scale_factor);
}
|
