chrome/browser/ui/webui/ntp/ntp_resource_cache.cc

   1 // Copyright (c) 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/webui/ntp/ntp_resource_cache.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/command_line.h"
  11 #include "base/memory/ref_counted_memory.h"
  12 #include "base/prefs/pref_service.h"
  13 #include "base/strings/string16.h"
  14 #include "base/strings/string_number_conversions.h"
  15 #include "base/strings/stringprintf.h"
  16 #include "base/strings/utf_string_conversions.h"
  17 #include "base/values.h"
  18 #include "chrome/browser/browser_process.h"
  19 #include "chrome/browser/chrome_notification_types.h"
  20 #include "chrome/browser/extensions/extension_util.h"
  21 #include "chrome/browser/first_run/first_run.h"
  22 #include "chrome/browser/profiles/profile.h"
  23 #include "chrome/browser/search/search.h"
  24 #include "chrome/browser/signin/signin_manager_factory.h"
  25 #include "chrome/browser/sync/profile_sync_service.h"
  26 #include "chrome/browser/sync/profile_sync_service_factory.h"
  27 #include "chrome/browser/themes/theme_properties.h"
  28 #include "chrome/browser/themes/theme_service.h"
  29 #include "chrome/browser/themes/theme_service_factory.h"
  30 #include "chrome/browser/ui/app_list/app_list_util.h"
  31 #include "chrome/browser/ui/apps/app_info_dialog.h"
  32 #include "chrome/browser/ui/bookmarks/bookmark_bar_constants.h"
  33 #include "chrome/browser/ui/sync/sync_promo_ui.h"
  34 #include "chrome/browser/ui/webui/app_launcher_login_handler.h"
  35 #include "chrome/browser/ui/webui/ntp/new_tab_page_handler.h"
  36 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
  37 #include "chrome/browser/web_resource/notification_promo_helper.h"
  38 #include "chrome/common/chrome_switches.h"
  39 #include "chrome/common/pref_names.h"
  40 #include "chrome/common/url_constants.h"
  41 #include "chrome/grit/chromium_strings.h"
  42 #include "chrome/grit/generated_resources.h"
  43 #include "chrome/grit/locale_settings.h"
  44 #include "components/google/core/browser/google_util.h"
  45 #include "components/signin/core/browser/signin_manager.h"
  46 #include "components/web_resource/notification_promo.h"
  47 #include "content/public/browser/browser_thread.h"
  48 #include "content/public/browser/notification_service.h"
  49 #include "content/public/browser/render_process_host.h"
  50 #include "extensions/common/extension.h"
  51 #include "extensions/common/extension_urls.h"
  52 #include "grit/browser_resources.h"
  53 #include "grit/components_strings.h"
  54 #include "grit/theme_resources.h"
  55 #include "ui/base/l10n/l10n_util.h"
  56 #include "ui/base/resource/resource_bundle.h"
  57 #include "ui/base/template_expressions.h"
  58 #include "ui/base/theme_provider.h"
  59 #include "ui/base/webui/jstemplate_builder.h"
  60 #include "ui/base/webui/web_ui_util.h"
  61 #include "ui/gfx/animation/animation.h"
  62 #include "ui/gfx/color_utils.h"
  63
  64 #if defined(OS_CHROMEOS)
  65 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
  66 #include "chromeos/chromeos_switches.h"
  67 #endif
  68
  69 #if defined(OS_MACOSX)
  70 #include "chrome/browser/platform_util.h"
  71 #endif
  72
  73 using content::BrowserThread;
  74
  75 namespace {
  76
  77 // The URL for the the Learn More page shown on incognito new tab.
  78 const char kLearnMoreIncognitoUrl[] =
  79 #if defined(OS_CHROMEOS)
  80     "https://support.google.com/chromebook/?p=incognito";
  81 #else
  82     "https://support.google.com/chrome/?p=incognito";
  83 #endif
  84
  85 // The URL for the Learn More page shown on guest session new tab.
  86 const char kLearnMoreGuestSessionUrl[] =
  87 #if defined(OS_CHROMEOS)
  88     "https://support.google.com/chromebook/answer/1057090";
  89 #else
  90     "https://support.google.com/chrome/?p=ui_guest";
  91 #endif
  92
  93 std::string SkColorToRGBAString(SkColor color) {
  94   // We convert the alpha using DoubleToString because StringPrintf will use
  95   // locale specific formatters (e.g., use , instead of . in German).
  96   return base::StringPrintf(
  97       "rgba(%d,%d,%d,%s)",
  98       SkColorGetR(color),
  99       SkColorGetG(color),
 100       SkColorGetB(color),
 101       base::DoubleToString(SkColorGetA(color) / 255.0).c_str());
 102 }
 103
 104 // Creates an rgb string for an SkColor, but leaves the alpha blank so that the
 105 // css can fill it in.
 106 std::string SkColorToRGBComponents(SkColor color) {
 107   return base::StringPrintf(
 108       "%d,%d,%d",
 109       SkColorGetR(color),
 110       SkColorGetG(color),
 111       SkColorGetB(color));
 112 }
 113
 114 SkColor GetThemeColor(ui::ThemeProvider* tp, int id) {
 115   SkColor color = tp->GetColor(id);
 116   // If web contents are being inverted because the system is in high-contrast
 117   // mode, any system theme colors we use must be inverted too to cancel out.
 118   return color_utils::IsInvertedColorScheme() ?
 119       color_utils::InvertColor(color) : color;
 120 }
 121
 122 // Get the CSS string for the background position on the new tab page for the
 123 // states when the bar is attached or detached.
 124 std::string GetNewTabBackgroundCSS(const ui::ThemeProvider* theme_provider,
 125                                    bool bar_attached) {
 126   // TODO(glen): This is a quick workaround to hide the notused.png image when
 127   // no image is provided - we don't have time right now to figure out why
 128   // this is painting as white.
 129   // http://crbug.com/17593
 130   if (!theme_provider->HasCustomImage(IDR_THEME_NTP_BACKGROUND)) {
 131     return "-64px";
 132   }
 133
 134   int alignment = theme_provider->GetDisplayProperty(
 135       ThemeProperties::NTP_BACKGROUND_ALIGNMENT);
 136
 137   if (bar_attached)
 138     return ThemeProperties::AlignmentToString(alignment);
 139
 140   if (alignment & ThemeProperties::ALIGN_TOP) {
 141     // The bar is detached, so we must offset the background by the bar size
 142     // if it's a top-aligned bar.
 143     int offset = chrome::kNTPBookmarkBarHeight;
 144
 145     if (alignment & ThemeProperties::ALIGN_LEFT)
 146       return "left " + base::IntToString(-offset) + "px";
 147     else if (alignment & ThemeProperties::ALIGN_RIGHT)
 148       return "right " + base::IntToString(-offset) + "px";
 149     return "center " + base::IntToString(-offset) + "px";
 150   }
 151
 152   return ThemeProperties::AlignmentToString(alignment);
 153 }
 154
 155 // How the background image on the new tab page should be tiled (see tiling
 156 // masks in theme_service.h).
 157 std::string GetNewTabBackgroundTilingCSS(
 158     const ui::ThemeProvider* theme_provider) {
 159   int repeat_mode = theme_provider->GetDisplayProperty(
 160       ThemeProperties::NTP_BACKGROUND_TILING);
 161   return ThemeProperties::TilingToString(repeat_mode);
 162 }
 163
 164 }  // namespace
 165
 166 NTPResourceCache::NTPResourceCache(Profile* profile)
 167     : profile_(profile), is_swipe_tracking_from_scroll_events_enabled_(false),
 168       should_show_apps_page_(NewTabUI::ShouldShowApps()),
 169       should_show_other_devices_menu_(true) {
 170   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 171                  content::Source<ThemeService>(
 172                      ThemeServiceFactory::GetForProfile(profile)));
 173   registrar_.Add(this, chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED,
 174                  content::NotificationService::AllSources());
 175
 176   web_resource::PromoResourceService* promo_service =
 177       g_browser_process->promo_resource_service();
 178   if (promo_service) {
 179     promo_resource_subscription_ = promo_service->RegisterStateChangedCallback(
 180         base::Bind(&NTPResourceCache::Invalidate, base::Unretained(this)));
 181   }
 182
 183   base::Closure callback = base::Bind(&NTPResourceCache::OnPreferenceChanged,
 184                                       base::Unretained(this));
 185
 186   // Watch for pref changes that cause us to need to invalidate the HTML cache.
 187   profile_pref_change_registrar_.Init(profile_->GetPrefs());
 188   profile_pref_change_registrar_.Add(bookmarks::prefs::kShowBookmarkBar,
 189                                      callback);
 190   profile_pref_change_registrar_.Add(prefs::kNtpShownPage, callback);
 191   profile_pref_change_registrar_.Add(prefs::kSignInPromoShowNTPBubble,
 192                                      callback);
 193   profile_pref_change_registrar_.Add(prefs::kHideWebStoreIcon, callback);
 194
 195   // Some tests don't have a local state.
 196 #if defined(ENABLE_APP_LIST)
 197   if (g_browser_process->local_state()) {
 198     local_state_pref_change_registrar_.Init(g_browser_process->local_state());
 199     local_state_pref_change_registrar_.Add(prefs::kShowAppLauncherPromo,
 200                                            callback);
 201     local_state_pref_change_registrar_.Add(
 202         prefs::kAppLauncherHasBeenEnabled, callback);
 203   }
 204 #endif
 205 }
 206
 207 NTPResourceCache::~NTPResourceCache() {}
 208
 209 bool NTPResourceCache::NewTabCacheNeedsRefresh() {
 210 #if defined(OS_MACOSX)
 211   // Invalidate if the current value is different from the cached value.
 212   bool is_enabled = platform_util::IsSwipeTrackingFromScrollEventsEnabled();
 213   if (is_enabled != is_swipe_tracking_from_scroll_events_enabled_) {
 214     is_swipe_tracking_from_scroll_events_enabled_ = is_enabled;
 215     return true;
 216   }
 217 #endif
 218   bool should_show_apps_page = NewTabUI::ShouldShowApps();
 219   if (should_show_apps_page != should_show_apps_page_) {
 220     should_show_apps_page_ = should_show_apps_page;
 221     return true;
 222   }
 223   return false;
 224 }
 225
 226 NTPResourceCache::WindowType NTPResourceCache::GetWindowType(
 227     Profile* profile, content::RenderProcessHost* render_host) {
 228   if (profile->IsGuestSession()) {
 229     return NTPResourceCache::GUEST;
 230   } else if (render_host) {
 231     // Sometimes the |profile| is the parent (non-incognito) version of the user
 232     // so we check the |render_host| if it is provided.
 233     if (render_host->GetBrowserContext()->IsOffTheRecord())
 234       return NTPResourceCache::INCOGNITO;
 235   } else if (profile->IsOffTheRecord()) {
 236     return NTPResourceCache::INCOGNITO;
 237   }
 238   return NTPResourceCache::NORMAL;
 239 }
 240
 241 base::RefCountedMemory* NTPResourceCache::GetNewTabHTML(WindowType win_type) {
 242   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 243   if (win_type == GUEST) {
 244     if (!new_tab_guest_html_.get())
 245       CreateNewTabGuestHTML();
 246     return new_tab_guest_html_.get();
 247   } else if (win_type == INCOGNITO) {
 248     if (!new_tab_incognito_html_.get())
 249       CreateNewTabIncognitoHTML();
 250     return new_tab_incognito_html_.get();
 251   } else {
 252     // Refresh the cached HTML if necessary.
 253     // NOTE: NewTabCacheNeedsRefresh() must be called every time the new tab
 254     // HTML is fetched, because it needs to initialize cached values.
 255     if (NewTabCacheNeedsRefresh() || !new_tab_html_.get())
 256       CreateNewTabHTML();
 257     return new_tab_html_.get();
 258   }
 259 }
 260
 261 base::RefCountedMemory* NTPResourceCache::GetNewTabCSS(WindowType win_type) {
 262   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 263   if (win_type == GUEST) {
 264     if (!new_tab_guest_css_.get())
 265       CreateNewTabGuestCSS();
 266     return new_tab_guest_css_.get();
 267   } else if (win_type == INCOGNITO) {
 268     if (!new_tab_incognito_css_.get())
 269       CreateNewTabIncognitoCSS();
 270     return new_tab_incognito_css_.get();
 271   } else {
 272     if (!new_tab_css_.get())
 273       CreateNewTabCSS();
 274     return new_tab_css_.get();
 275   }
 276 }
 277
 278 void NTPResourceCache::Observe(int type,
 279                                const content::NotificationSource& source,
 280                                const content::NotificationDetails& details) {
 281   // Invalidate the cache.
 282   if (chrome::NOTIFICATION_BROWSER_THEME_CHANGED == type ||
 283       chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED == type) {
 284     Invalidate();
 285   } else {
 286     NOTREACHED();
 287   }
 288 }
 289
 290 void NTPResourceCache::OnPreferenceChanged() {
 291   // A change occurred to one of the preferences we care about, so flush the
 292   // cache.
 293   new_tab_incognito_html_ = NULL;
 294   new_tab_html_ = NULL;
 295   new_tab_css_ = NULL;
 296 }
 297
 298 void NTPResourceCache::Invalidate() {
 299   new_tab_incognito_html_ = nullptr;
 300   new_tab_html_ = nullptr;
 301   new_tab_incognito_css_ = nullptr;
 302   // TODO(dbeam): Check if it is necessary to clear the CSS on promo changes.
 303   new_tab_css_ = nullptr;
 304 }
 305
 306 void NTPResourceCache::CreateNewTabIncognitoHTML() {
 307   base::DictionaryValue localized_strings;
 308   localized_strings.SetString("title",
 309       l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE));
 310   int new_tab_description_ids = IDS_NEW_TAB_OTR_DESCRIPTION;
 311   int new_tab_heading_ids = IDS_NEW_TAB_OTR_HEADING;
 312   int new_tab_link_ids = IDS_NEW_TAB_OTR_LEARN_MORE_LINK;
 313   int new_tab_warning_ids = IDS_NEW_TAB_OTR_MESSAGE_WARNING;
 314   int new_tab_html_idr = IDR_INCOGNITO_TAB_HTML;
 315   const char* new_tab_link = kLearnMoreIncognitoUrl;
 316
 317   if (profile_->IsGuestSession()) {
 318     localized_strings.SetString("guestTabDescription",
 319         l10n_util::GetStringUTF16(new_tab_description_ids));
 320     localized_strings.SetString("guestTabHeading",
 321         l10n_util::GetStringUTF16(new_tab_heading_ids));
 322   } else {
 323     localized_strings.SetString("incognitoTabDescription",
 324         l10n_util::GetStringUTF16(new_tab_description_ids));
 325     localized_strings.SetString("incognitoTabHeading",
 326         l10n_util::GetStringUTF16(new_tab_heading_ids));
 327     localized_strings.SetString("incognitoTabWarning",
 328         l10n_util::GetStringUTF16(new_tab_warning_ids));
 329   }
 330
 331   localized_strings.SetString("learnMore",
 332       l10n_util::GetStringUTF16(new_tab_link_ids));
 333   localized_strings.SetString("learnMoreLink", new_tab_link);
 334
 335   bool bookmark_bar_attached =
 336       profile_->GetPrefs()->GetBoolean(bookmarks::prefs::kShowBookmarkBar);
 337   localized_strings.SetBoolean("bookmarkbarattached", bookmark_bar_attached);
 338
 339   const std::string& app_locale = g_browser_process->GetApplicationLocale();
 340   webui::SetLoadTimeDataDefaults(app_locale, &localized_strings);
 341
 342   static const base::StringPiece incognito_tab_html(
 343       ResourceBundle::GetSharedInstance().GetRawDataResource(
 344           new_tab_html_idr));
 345
 346   std::string full_html = webui::GetI18nTemplateHtml(
 347       incognito_tab_html, &localized_strings);
 348
 349   new_tab_incognito_html_ = base::RefCountedString::TakeString(&full_html);
 350 }
 351
 352 void NTPResourceCache::CreateNewTabGuestHTML() {
 353   base::DictionaryValue localized_strings;
 354   localized_strings.SetString("title",
 355       l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE));
 356   const char* guest_tab_link = kLearnMoreGuestSessionUrl;
 357   int guest_tab_ids = IDR_GUEST_TAB_HTML;
 358   int guest_tab_description_ids = IDS_NEW_TAB_GUEST_SESSION_DESCRIPTION;
 359   int guest_tab_heading_ids = IDS_NEW_TAB_GUEST_SESSION_HEADING;
 360   int guest_tab_link_ids = IDS_NEW_TAB_GUEST_SESSION_LEARN_MORE_LINK;
 361
 362 #if defined(OS_CHROMEOS)
 363   guest_tab_ids = IDR_GUEST_SESSION_TAB_HTML;
 364
 365   policy::BrowserPolicyConnectorChromeOS* connector =
 366       g_browser_process->platform_part()->browser_policy_connector_chromeos();
 367   std::string enterprise_domain = connector->GetEnterpriseDomain();
 368
 369   if (!enterprise_domain.empty()) {
 370     // Device is enterprise enrolled.
 371     localized_strings.SetString("enterpriseInfoVisible", "true");
 372     base::string16 enterprise_info = l10n_util::GetStringFUTF16(
 373         IDS_DEVICE_OWNED_BY_NOTICE,
 374         base::UTF8ToUTF16(enterprise_domain));
 375     localized_strings.SetString("enterpriseInfoMessage", enterprise_info);
 376     localized_strings.SetString("enterpriseLearnMore",
 377         l10n_util::GetStringUTF16(IDS_LEARN_MORE));
 378     localized_strings.SetString("enterpriseInfoHintLink",
 379                                 chrome::kLearnMoreEnterpriseURL);
 380   } else {
 381     localized_strings.SetString("enterpriseInfoVisible", "false");
 382   }
 383 #endif
 384
 385   localized_strings.SetString("guestTabDescription",
 386       l10n_util::GetStringUTF16(guest_tab_description_ids));
 387   localized_strings.SetString("guestTabHeading",
 388       l10n_util::GetStringUTF16(guest_tab_heading_ids));
 389   localized_strings.SetString("learnMore",
 390       l10n_util::GetStringUTF16(guest_tab_link_ids));
 391   localized_strings.SetString("learnMoreLink", guest_tab_link);
 392
 393   const std::string& app_locale = g_browser_process->GetApplicationLocale();
 394   webui::SetLoadTimeDataDefaults(app_locale, &localized_strings);
 395
 396   static const base::StringPiece guest_tab_html(
 397       ResourceBundle::GetSharedInstance().GetRawDataResource(guest_tab_ids));
 398
 399   std::string full_html = webui::GetI18nTemplateHtml(
 400       guest_tab_html, &localized_strings);
 401
 402   new_tab_guest_html_ = base::RefCountedString::TakeString(&full_html);
 403 }
 404
 405 void NTPResourceCache::CreateNewTabHTML() {
 406   // TODO(estade): these strings should be defined in their relevant handlers
 407   // (in GetLocalizedValues) and should have more legible names.
 408   // Show the profile name in the title and most visited labels if the current
 409   // profile is not the default.
 410   PrefService* prefs = profile_->GetPrefs();
 411   base::DictionaryValue load_time_data;
 412   load_time_data.SetBoolean("bookmarkbarattached",
 413       prefs->GetBoolean(bookmarks::prefs::kShowBookmarkBar));
 414   load_time_data.SetBoolean("showAppLauncherPromo",
 415       ShouldShowAppLauncherPromo());
 416   load_time_data.SetString("title",
 417       l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE));
 418   load_time_data.SetString("webStoreTitle",
 419       l10n_util::GetStringUTF16(IDS_EXTENSION_WEB_STORE_TITLE));
 420   load_time_data.SetString("webStoreTitleShort",
 421       l10n_util::GetStringUTF16(IDS_EXTENSION_WEB_STORE_TITLE_SHORT));
 422   load_time_data.SetString("attributionintro",
 423       l10n_util::GetStringUTF16(IDS_NEW_TAB_ATTRIBUTION_INTRO));
 424   load_time_data.SetString("appuninstall",
 425       l10n_util::GetStringUTF16(IDS_EXTENSIONS_UNINSTALL));
 426   load_time_data.SetString("appoptions",
 427       l10n_util::GetStringUTF16(IDS_NEW_TAB_APP_OPTIONS));
 428   load_time_data.SetString("appdetails",
 429       l10n_util::GetStringUTF16(IDS_NEW_TAB_APP_DETAILS));
 430   load_time_data.SetString("appinfodialog",
 431       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_SHOW_INFO));
 432   load_time_data.SetString("appcreateshortcut",
 433       l10n_util::GetStringUTF16(IDS_NEW_TAB_APP_CREATE_SHORTCUT));
 434   load_time_data.SetString("appDefaultPageName",
 435       l10n_util::GetStringUTF16(IDS_APP_DEFAULT_PAGE_NAME));
 436   load_time_data.SetString("applaunchtypepinned",
 437       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_OPEN_PINNED));
 438   load_time_data.SetString("applaunchtyperegular",
 439       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_OPEN_REGULAR));
 440   load_time_data.SetString("applaunchtypewindow",
 441       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_OPEN_WINDOW));
 442   load_time_data.SetString("applaunchtypefullscreen",
 443       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_OPEN_FULLSCREEN));
 444   load_time_data.SetString("syncpromotext",
 445       l10n_util::GetStringUTF16(IDS_SYNC_START_SYNC_BUTTON_LABEL));
 446   load_time_data.SetString("syncLinkText",
 447       l10n_util::GetStringUTF16(IDS_SYNC_ADVANCED_OPTIONS));
 448   load_time_data.SetBoolean("shouldShowSyncLogin",
 449                             AppLauncherLoginHandler::ShouldShow(profile_));
 450   load_time_data.SetString("learnMore",
 451       l10n_util::GetStringUTF16(IDS_LEARN_MORE));
 452   const std::string& app_locale = g_browser_process->GetApplicationLocale();
 453   load_time_data.SetString("webStoreLink",
 454       google_util::AppendGoogleLocaleParam(
 455           GURL(extension_urls::GetWebstoreLaunchURL()), app_locale).spec());
 456   load_time_data.SetString("appInstallHintText",
 457       l10n_util::GetStringUTF16(IDS_NEW_TAB_APP_INSTALL_HINT_LABEL));
 458   load_time_data.SetString("learn_more",
 459       l10n_util::GetStringUTF16(IDS_LEARN_MORE));
 460   load_time_data.SetString("tile_grid_screenreader_accessible_description",
 461       l10n_util::GetStringUTF16(IDS_NEW_TAB_TILE_GRID_ACCESSIBLE_DESCRIPTION));
 462   load_time_data.SetString("page_switcher_change_title",
 463       l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_SWITCHER_CHANGE_TITLE));
 464   load_time_data.SetString("page_switcher_same_title",
 465       l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_SWITCHER_SAME_TITLE));
 466   load_time_data.SetString("appsPromoTitle",
 467       l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_APPS_PROMO_TITLE));
 468   // On Mac OS X 10.7+, horizontal scrolling can be treated as a back or
 469   // forward gesture. Pass through a flag that indicates whether or not that
 470   // feature is enabled.
 471   load_time_data.SetBoolean("isSwipeTrackingFromScrollEventsEnabled",
 472                             is_swipe_tracking_from_scroll_events_enabled_);
 473
 474   load_time_data.SetBoolean("showApps", should_show_apps_page_);
 475   load_time_data.SetBoolean("showWebStoreIcon",
 476                             !prefs->GetBoolean(prefs::kHideWebStoreIcon));
 477
 478   load_time_data.SetBoolean("enableNewBookmarkApps",
 479                             extensions::util::IsNewBookmarkAppsEnabled());
 480
 481   load_time_data.SetBoolean("canHostedAppsOpenInWindows",
 482                             extensions::util::CanHostedAppsOpenInWindows());
 483
 484   load_time_data.SetBoolean("canShowAppInfoDialog",
 485                             CanShowAppInfoDialog());
 486
 487   NewTabPageHandler::GetLocalizedValues(profile_, &load_time_data);
 488   AppLauncherLoginHandler::GetLocalizedValues(profile_, &load_time_data);
 489
 490   webui::SetLoadTimeDataDefaults(app_locale, &load_time_data);
 491
 492   // Control fade and resize animations.
 493   load_time_data.SetBoolean("anim",
 494                             gfx::Animation::ShouldRenderRichAnimation());
 495
 496   // Disable the promo if this is the first run, otherwise set the promo string
 497   // for display if there is a valid outstanding promo.
 498   if (first_run::IsChromeFirstRun()) {
 499     web_resource::HandleNotificationPromoClosed(
 500         web_resource::NotificationPromo::NTP_NOTIFICATION_PROMO);
 501   } else {
 502     web_resource::NotificationPromo notification_promo(
 503         g_browser_process->local_state());
 504     notification_promo.InitFromPrefs(
 505         web_resource::NotificationPromo::NTP_NOTIFICATION_PROMO);
 506     if (notification_promo.CanShow()) {
 507       load_time_data.SetString("notificationPromoText",
 508                                notification_promo.promo_text());
 509       DVLOG(1) << "Notification promo:" << notification_promo.promo_text();
 510     }
 511
 512     web_resource::NotificationPromo bubble_promo(
 513         g_browser_process->local_state());
 514     bubble_promo.InitFromPrefs(
 515         web_resource::NotificationPromo::NTP_BUBBLE_PROMO);
 516     if (bubble_promo.CanShow()) {
 517       load_time_data.SetString("bubblePromoText",
 518                                bubble_promo.promo_text());
 519       DVLOG(1) << "Bubble promo:" << bubble_promo.promo_text();
 520     }
 521   }
 522
 523   load_time_data.SetBoolean(
 524       "isUserSignedIn",
 525       SigninManagerFactory::GetForProfile(profile_)->IsAuthenticated());
 526
 527   // Load the new tab page appropriate for this build.
 528   base::StringPiece new_tab_html(ResourceBundle::GetSharedInstance().
 529       GetRawDataResource(IDR_NEW_TAB_4_HTML));
 530   std::string full_html =
 531       webui::GetI18nTemplateHtml(new_tab_html, &load_time_data);
 532   new_tab_html_ = base::RefCountedString::TakeString(&full_html);
 533 }
 534
 535 void NTPResourceCache::CreateNewTabIncognitoCSS() {
 536   ui::ThemeProvider* tp = ThemeServiceFactory::GetForProfile(profile_);
 537   DCHECK(tp);
 538
 539   // Get our theme colors
 540   SkColor color_background =
 541       GetThemeColor(tp, ThemeProperties::COLOR_NTP_BACKGROUND);
 542
 543   // Generate the replacements.
 544   std::map<base::StringPiece, std::string> substitutions;
 545
 546   // Cache-buster for background.
 547   substitutions["themeId"] =
 548       profile_->GetPrefs()->GetString(prefs::kCurrentThemeID);
 549
 550   // Colors.
 551   substitutions["colorBackground"] = SkColorToRGBAString(color_background);
 552   substitutions["backgroundBarDetached"] = GetNewTabBackgroundCSS(tp, false);
 553   substitutions["backgroundBarAttached"] = GetNewTabBackgroundCSS(tp, true);
 554   substitutions["backgroundTiling"] = GetNewTabBackgroundTilingCSS(tp);
 555
 556   // Get our template.
 557   static const base::StringPiece new_tab_theme_css(
 558       ResourceBundle::GetSharedInstance().GetRawDataResource(
 559           IDR_NEW_INCOGNITO_TAB_THEME_CSS));
 560
 561   // Create the string from our template and the replacements.
 562   std::string full_css =
 563       ui::ReplaceTemplateExpressions(new_tab_theme_css, substitutions);
 564
 565   new_tab_incognito_css_ = base::RefCountedString::TakeString(&full_css);
 566 }
 567
 568 void NTPResourceCache::CreateNewTabGuestCSS() {
 569   ui::ThemeProvider* tp = ThemeServiceFactory::GetForProfile(profile_);
 570   DCHECK(tp);
 571
 572   // Get our theme colors
 573   SkColor color_background =
 574       GetThemeColor(tp, ThemeProperties::COLOR_NTP_BACKGROUND);
 575
 576   // Generate the replacements.
 577   std::map<base::StringPiece, std::string> substitutions;
 578
 579   // Cache-buster for background.
 580   substitutions["themeId"] =
 581       profile_->GetPrefs()->GetString(prefs::kCurrentThemeID);
 582
 583   // Colors.
 584   substitutions["colorBackground"] = SkColorToRGBAString(color_background);
 585   substitutions["backgroundBarDetached"] = GetNewTabBackgroundCSS(tp, false);
 586   substitutions["backgroundBarAttached"] = GetNewTabBackgroundCSS(tp, true);
 587   substitutions["backgroundTiling"] = GetNewTabBackgroundTilingCSS(tp);
 588
 589   // Get our template.
 590   static const base::StringPiece new_tab_theme_css(
 591       ResourceBundle::GetSharedInstance().GetRawDataResource(
 592           IDR_NEW_INCOGNITO_TAB_THEME_CSS));
 593
 594   // Create the string from our template and the replacements.
 595   std::string full_css =
 596       ui::ReplaceTemplateExpressions(new_tab_theme_css, substitutions);
 597
 598   new_tab_guest_css_ = base::RefCountedString::TakeString(&full_css);
 599 }
 600
 601 void NTPResourceCache::CreateNewTabCSS() {
 602   ui::ThemeProvider* tp = ThemeServiceFactory::GetForProfile(profile_);
 603   DCHECK(tp);
 604
 605   // Get our theme colors
 606   SkColor color_background =
 607       GetThemeColor(tp, ThemeProperties::COLOR_NTP_BACKGROUND);
 608   SkColor color_text = GetThemeColor(tp, ThemeProperties::COLOR_NTP_TEXT);
 609   SkColor color_text_light =
 610       GetThemeColor(tp, ThemeProperties::COLOR_NTP_TEXT_LIGHT);
 611
 612   SkColor color_header =
 613       GetThemeColor(tp, ThemeProperties::COLOR_NTP_HEADER);
 614   // Generate a lighter color for the header gradients.
 615   color_utils::HSL header_lighter;
 616   color_utils::SkColorToHSL(color_header, &header_lighter);
 617   header_lighter.l += (1 - header_lighter.l) * 0.33;
 618
 619   // Generate section border color from the header color. See
 620   // BookmarkBarView::Paint for how we do this for the bookmark bar
 621   // borders.
 622   SkColor color_section_border =
 623       SkColorSetARGB(80,
 624                      SkColorGetR(color_header),
 625                      SkColorGetG(color_header),
 626                      SkColorGetB(color_header));
 627
 628   // Generate the replacements.
 629   std::map<base::StringPiece, std::string> substitutions;
 630
 631   // Cache-buster for background.
 632   substitutions["themeId"] =
 633       profile_->GetPrefs()->GetString(prefs::kCurrentThemeID);
 634
 635   // Colors.
 636   substitutions["colorBackground"] = SkColorToRGBAString(color_background);
 637   substitutions["backgroundBarDetached"] = GetNewTabBackgroundCSS(tp, false);
 638   substitutions["backgroundBarAttached"] = GetNewTabBackgroundCSS(tp, true);
 639   substitutions["backgroundTiling"] = GetNewTabBackgroundTilingCSS(tp);
 640   substitutions["colorTextRgba"] = SkColorToRGBAString(color_text);
 641   substitutions["colorSectionBorder"] =
 642       SkColorToRGBAString(color_section_border);
 643   substitutions["colorTextLight"] = SkColorToRGBAString(color_text_light);
 644   substitutions["colorSectionBorder"] =
 645       SkColorToRGBComponents(color_section_border);
 646   substitutions["colorText"] = SkColorToRGBComponents(color_text);
 647
 648   // For themes that right-align the background, we flip the attribution to the
 649   // left to avoid conflicts.
 650   int alignment = tp->GetDisplayProperty(
 651       ThemeProperties::NTP_BACKGROUND_ALIGNMENT);
 652   if (alignment & ThemeProperties::ALIGN_RIGHT) {
 653     substitutions["leftAlignAttribution"] = "0";
 654     substitutions["rightAlignAttribution"] = "auto";
 655     substitutions["textAlignAttribution"] = "right";
 656   } else {
 657     substitutions["leftAlignAttribution"] = "auto";
 658     substitutions["rightAlignAttribution"] = "0";
 659     substitutions["textAlignAttribution"] = "left";
 660   }
 661
 662   substitutions["displayAttribution"] =
 663       tp->HasCustomImage(IDR_THEME_NTP_ATTRIBUTION) ? "inline" : "none";
 664
 665   // Get our template.
 666   static const base::StringPiece new_tab_theme_css(
 667       ResourceBundle::GetSharedInstance().GetRawDataResource(
 668           IDR_NEW_TAB_4_THEME_CSS));
 669
 670   // Create the string from our template and the replacements.
 671   std::string css_string =
 672       ui::ReplaceTemplateExpressions(new_tab_theme_css, substitutions);
 673   new_tab_css_ = base::RefCountedString::TakeString(&css_string);
 674 }