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.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 "content/public/browser/browser_thread.h"
  47 #include "content/public/browser/notification_service.h"
  48 #include "content/public/browser/render_process_host.h"
  49 #include "extensions/common/extension.h"
  50 #include "extensions/common/extension_urls.h"
  51 #include "grit/browser_resources.h"
  52 #include "grit/components_strings.h"
  53 #include "grit/theme_resources.h"
  54 #include "ui/base/l10n/l10n_util.h"
  55 #include "ui/base/resource/resource_bundle.h"
  56 #include "ui/base/theme_provider.h"
  57 #include "ui/base/webui/jstemplate_builder.h"
  58 #include "ui/base/webui/web_ui_util.h"
  59 #include "ui/gfx/animation/animation.h"
  60 #include "ui/gfx/color_utils.h"
  61 #include "ui/gfx/sys_color_change_listener.h"
  62
  63 #if defined(OS_CHROMEOS)
  64 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
  65 #include "chromeos/chromeos_switches.h"
  66 #endif
  67
  68 #if defined(OS_MACOSX)
  69 #include "chrome/browser/platform_util.h"
  70 #endif
  71
  72 using content::BrowserThread;
  73
  74 namespace {
  75
  76 // The URL for the the Learn More page shown on incognito new tab.
  77 const char kLearnMoreIncognitoUrl[] =
  78 #if defined(OS_CHROMEOS)
  79     "https://support.google.com/chromebook/?p=incognito";
  80 #else
  81     "https://support.google.com/chrome/?p=incognito";
  82 #endif
  83
  84 // The URL for the Learn More page shown on guest session new tab.
  85 const char kLearnMoreGuestSessionUrl[] =
  86 #if defined(OS_CHROMEOS)
  87     "https://support.google.com/chromebook/answer/1057090";
  88 #else
  89     "https://support.google.com/chrome/?p=ui_guest";
  90 #endif
  91
  92 std::string SkColorToRGBAString(SkColor color) {
  93   // We convert the alpha using DoubleToString because StringPrintf will use
  94   // locale specific formatters (e.g., use , instead of . in German).
  95   return base::StringPrintf(
  96       "rgba(%d,%d,%d,%s)",
  97       SkColorGetR(color),
  98       SkColorGetG(color),
  99       SkColorGetB(color),
 100       base::DoubleToString(SkColorGetA(color) / 255.0).c_str());
 101 }
 102
 103 // Creates an rgb string for an SkColor, but leaves the alpha blank so that the
 104 // css can fill it in.
 105 std::string SkColorToRGBComponents(SkColor color) {
 106   return base::StringPrintf(
 107       "%d,%d,%d",
 108       SkColorGetR(color),
 109       SkColorGetG(color),
 110       SkColorGetB(color));
 111 }
 112
 113 SkColor GetThemeColor(ui::ThemeProvider* tp, int id) {
 114   SkColor color = tp->GetColor(id);
 115   // If web contents are being inverted because the system is in high-contrast
 116   // mode, any system theme colors we use must be inverted too to cancel out.
 117   return gfx::IsInvertedColorScheme() ?
 118       color_utils::InvertColor(color) : color;
 119 }
 120
 121 // Get the CSS string for the background position on the new tab page for the
 122 // states when the bar is attached or detached.
 123 std::string GetNewTabBackgroundCSS(const ui::ThemeProvider* theme_provider,
 124                                    bool bar_attached) {
 125   // TODO(glen): This is a quick workaround to hide the notused.png image when
 126   // no image is provided - we don't have time right now to figure out why
 127   // this is painting as white.
 128   // http://crbug.com/17593
 129   if (!theme_provider->HasCustomImage(IDR_THEME_NTP_BACKGROUND)) {
 130     return "-64px";
 131   }
 132
 133   int alignment = theme_provider->GetDisplayProperty(
 134       ThemeProperties::NTP_BACKGROUND_ALIGNMENT);
 135
 136   if (bar_attached)
 137     return ThemeProperties::AlignmentToString(alignment);
 138
 139   if (alignment & ThemeProperties::ALIGN_TOP) {
 140     // The bar is detached, so we must offset the background by the bar size
 141     // if it's a top-aligned bar.
 142     int offset = chrome::kNTPBookmarkBarHeight;
 143
 144     if (alignment & ThemeProperties::ALIGN_LEFT)
 145       return "left " + base::IntToString(-offset) + "px";
 146     else if (alignment & ThemeProperties::ALIGN_RIGHT)
 147       return "right " + base::IntToString(-offset) + "px";
 148     return "center " + base::IntToString(-offset) + "px";
 149   }
 150
 151   return ThemeProperties::AlignmentToString(alignment);
 152 }
 153
 154 // How the background image on the new tab page should be tiled (see tiling
 155 // masks in theme_service.h).
 156 std::string GetNewTabBackgroundTilingCSS(
 157     const ui::ThemeProvider* theme_provider) {
 158   int repeat_mode = theme_provider->GetDisplayProperty(
 159       ThemeProperties::NTP_BACKGROUND_TILING);
 160   return ThemeProperties::TilingToString(repeat_mode);
 161 }
 162
 163 }  // namespace
 164
 165 NTPResourceCache::NTPResourceCache(Profile* profile)
 166     : profile_(profile), is_swipe_tracking_from_scroll_events_enabled_(false),
 167       should_show_apps_page_(NewTabUI::ShouldShowApps()),
 168       should_show_other_devices_menu_(true) {
 169   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 170                  content::Source<ThemeService>(
 171                      ThemeServiceFactory::GetForProfile(profile)));
 172   registrar_.Add(this, chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED,
 173                  content::NotificationService::AllSources());
 174
 175   PromoResourceService* promo_service =
 176       g_browser_process->promo_resource_service();
 177   if (promo_service) {
 178     promo_resource_subscription_ = promo_service->RegisterStateChangedCallback(
 179         base::Bind(&NTPResourceCache::Invalidate, base::Unretained(this)));
 180   }
 181
 182   base::Closure callback = base::Bind(&NTPResourceCache::OnPreferenceChanged,
 183                                       base::Unretained(this));
 184
 185   // Watch for pref changes that cause us to need to invalidate the HTML cache.
 186   profile_pref_change_registrar_.Init(profile_->GetPrefs());
 187   profile_pref_change_registrar_.Add(bookmarks::prefs::kShowBookmarkBar,
 188                                      callback);
 189   profile_pref_change_registrar_.Add(prefs::kNtpShownPage, callback);
 190   profile_pref_change_registrar_.Add(prefs::kSignInPromoShowNTPBubble,
 191                                      callback);
 192   profile_pref_change_registrar_.Add(prefs::kHideWebStoreIcon, callback);
 193
 194   // Some tests don't have a local state.
 195 #if defined(ENABLE_APP_LIST)
 196   if (g_browser_process->local_state()) {
 197     local_state_pref_change_registrar_.Init(g_browser_process->local_state());
 198     local_state_pref_change_registrar_.Add(prefs::kShowAppLauncherPromo,
 199                                            callback);
 200     local_state_pref_change_registrar_.Add(
 201         prefs::kAppLauncherHasBeenEnabled, callback);
 202   }
 203 #endif
 204 }
 205
 206 NTPResourceCache::~NTPResourceCache() {}
 207
 208 bool NTPResourceCache::NewTabCacheNeedsRefresh() {
 209 #if defined(OS_MACOSX)
 210   // Invalidate if the current value is different from the cached value.
 211   bool is_enabled = platform_util::IsSwipeTrackingFromScrollEventsEnabled();
 212   if (is_enabled != is_swipe_tracking_from_scroll_events_enabled_) {
 213     is_swipe_tracking_from_scroll_events_enabled_ = is_enabled;
 214     return true;
 215   }
 216 #endif
 217   bool should_show_apps_page = NewTabUI::ShouldShowApps();
 218   if (should_show_apps_page != should_show_apps_page_) {
 219     should_show_apps_page_ = should_show_apps_page;
 220     return true;
 221   }
 222   return false;
 223 }
 224
 225 NTPResourceCache::WindowType NTPResourceCache::GetWindowType(
 226     Profile* profile, content::RenderProcessHost* render_host) {
 227   if (profile->IsGuestSession()) {
 228     return NTPResourceCache::GUEST;
 229   } else if (render_host) {
 230     // Sometimes the |profile| is the parent (non-incognito) version of the user
 231     // so we check the |render_host| if it is provided.
 232     if (render_host->GetBrowserContext()->IsOffTheRecord())
 233       return NTPResourceCache::INCOGNITO;
 234   } else if (profile->IsOffTheRecord()) {
 235     return NTPResourceCache::INCOGNITO;
 236   }
 237   return NTPResourceCache::NORMAL;
 238 }
 239
 240 base::RefCountedMemory* NTPResourceCache::GetNewTabHTML(WindowType win_type) {
 241   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 242   if (win_type == GUEST) {
 243     if (!new_tab_guest_html_.get())
 244       CreateNewTabGuestHTML();
 245     return new_tab_guest_html_.get();
 246   } else if (win_type == INCOGNITO) {
 247     if (!new_tab_incognito_html_.get())
 248       CreateNewTabIncognitoHTML();
 249     return new_tab_incognito_html_.get();
 250   } else {
 251     // Refresh the cached HTML if necessary.
 252     // NOTE: NewTabCacheNeedsRefresh() must be called every time the new tab
 253     // HTML is fetched, because it needs to initialize cached values.
 254     if (NewTabCacheNeedsRefresh() || !new_tab_html_.get())
 255       CreateNewTabHTML();
 256     return new_tab_html_.get();
 257   }
 258 }
 259
 260 base::RefCountedMemory* NTPResourceCache::GetNewTabCSS(WindowType win_type) {
 261   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 262   if (win_type == GUEST) {
 263     if (!new_tab_guest_css_.get())
 264       CreateNewTabGuestCSS();
 265     return new_tab_guest_css_.get();
 266   } else if (win_type == INCOGNITO) {
 267     if (!new_tab_incognito_css_.get())
 268       CreateNewTabIncognitoCSS();
 269     return new_tab_incognito_css_.get();
 270   } else {
 271     if (!new_tab_css_.get())
 272       CreateNewTabCSS();
 273     return new_tab_css_.get();
 274   }
 275 }
 276
 277 void NTPResourceCache::Observe(int type,
 278                                const content::NotificationSource& source,
 279                                const content::NotificationDetails& details) {
 280   // Invalidate the cache.
 281   if (chrome::NOTIFICATION_BROWSER_THEME_CHANGED == type ||
 282       chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED == type) {
 283     Invalidate();
 284   } else {
 285     NOTREACHED();
 286   }
 287 }
 288
 289 void NTPResourceCache::OnPreferenceChanged() {
 290   // A change occurred to one of the preferences we care about, so flush the
 291   // cache.
 292   new_tab_incognito_html_ = NULL;
 293   new_tab_html_ = NULL;
 294   new_tab_css_ = NULL;
 295 }
 296
 297 void NTPResourceCache::Invalidate() {
 298   new_tab_incognito_html_ = nullptr;
 299   new_tab_html_ = nullptr;
 300   new_tab_incognito_css_ = nullptr;
 301   // TODO(dbeam): Check if it is necessary to clear the CSS on promo changes.
 302   new_tab_css_ = nullptr;
 303 }
 304
 305 void NTPResourceCache::CreateNewTabIncognitoHTML() {
 306   base::DictionaryValue localized_strings;
 307   localized_strings.SetString("title",
 308       l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE));
 309   int new_tab_description_ids = IDS_NEW_TAB_OTR_DESCRIPTION;
 310   int new_tab_heading_ids = IDS_NEW_TAB_OTR_HEADING;
 311   int new_tab_link_ids = IDS_NEW_TAB_OTR_LEARN_MORE_LINK;
 312   int new_tab_warning_ids = IDS_NEW_TAB_OTR_MESSAGE_WARNING;
 313   int new_tab_html_idr = IDR_INCOGNITO_TAB_HTML;
 314   const char* new_tab_link = kLearnMoreIncognitoUrl;
 315
 316   if (profile_->IsGuestSession()) {
 317     localized_strings.SetString("guestTabDescription",
 318         l10n_util::GetStringUTF16(new_tab_description_ids));
 319     localized_strings.SetString("guestTabHeading",
 320         l10n_util::GetStringUTF16(new_tab_heading_ids));
 321   } else {
 322     localized_strings.SetString("incognitoTabDescription",
 323         l10n_util::GetStringUTF16(new_tab_description_ids));
 324     localized_strings.SetString("incognitoTabHeading",
 325         l10n_util::GetStringUTF16(new_tab_heading_ids));
 326     localized_strings.SetString("incognitoTabWarning",
 327         l10n_util::GetStringUTF16(new_tab_warning_ids));
 328   }
 329
 330   localized_strings.SetString("learnMore",
 331       l10n_util::GetStringUTF16(new_tab_link_ids));
 332   localized_strings.SetString("learnMoreLink", new_tab_link);
 333
 334   bool bookmark_bar_attached =
 335       profile_->GetPrefs()->GetBoolean(bookmarks::prefs::kShowBookmarkBar);
 336   localized_strings.SetBoolean("bookmarkbarattached", bookmark_bar_attached);
 337
 338   const std::string& app_locale = g_browser_process->GetApplicationLocale();
 339   webui::SetLoadTimeDataDefaults(app_locale, &localized_strings);
 340
 341   static const base::StringPiece incognito_tab_html(
 342       ResourceBundle::GetSharedInstance().GetRawDataResource(
 343           new_tab_html_idr));
 344
 345   std::string full_html = webui::GetI18nTemplateHtml(
 346       incognito_tab_html, &localized_strings);
 347
 348   new_tab_incognito_html_ = base::RefCountedString::TakeString(&full_html);
 349 }
 350
 351 void NTPResourceCache::CreateNewTabGuestHTML() {
 352   base::DictionaryValue localized_strings;
 353   localized_strings.SetString("title",
 354       l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE));
 355   const char* guest_tab_link = kLearnMoreGuestSessionUrl;
 356   int guest_tab_ids = IDR_GUEST_TAB_HTML;
 357   int guest_tab_description_ids = IDS_NEW_TAB_GUEST_SESSION_DESCRIPTION;
 358   int guest_tab_heading_ids = IDS_NEW_TAB_GUEST_SESSION_HEADING;
 359   int guest_tab_link_ids = IDS_NEW_TAB_GUEST_SESSION_LEARN_MORE_LINK;
 360
 361 #if defined(OS_CHROMEOS)
 362   guest_tab_ids = IDR_GUEST_SESSION_TAB_HTML;
 363
 364   policy::BrowserPolicyConnectorChromeOS* connector =
 365       g_browser_process->platform_part()->browser_policy_connector_chromeos();
 366   std::string enterprise_domain = connector->GetEnterpriseDomain();
 367
 368   if (!enterprise_domain.empty()) {
 369     // Device is enterprise enrolled.
 370     localized_strings.SetString("enterpriseInfoVisible", "true");
 371     base::string16 enterprise_info = l10n_util::GetStringFUTF16(
 372         IDS_DEVICE_OWNED_BY_NOTICE,
 373         base::UTF8ToUTF16(enterprise_domain));
 374     localized_strings.SetString("enterpriseInfoMessage", enterprise_info);
 375     localized_strings.SetString("enterpriseLearnMore",
 376         l10n_util::GetStringUTF16(IDS_LEARN_MORE));
 377     localized_strings.SetString("enterpriseInfoHintLink",
 378                                 chrome::kLearnMoreEnterpriseURL);
 379   } else {
 380     localized_strings.SetString("enterpriseInfoVisible", "false");
 381   }
 382 #endif
 383
 384   localized_strings.SetString("guestTabDescription",
 385       l10n_util::GetStringUTF16(guest_tab_description_ids));
 386   localized_strings.SetString("guestTabHeading",
 387       l10n_util::GetStringUTF16(guest_tab_heading_ids));
 388   localized_strings.SetString("learnMore",
 389       l10n_util::GetStringUTF16(guest_tab_link_ids));
 390   localized_strings.SetString("learnMoreLink", guest_tab_link);
 391
 392   const std::string& app_locale = g_browser_process->GetApplicationLocale();
 393   webui::SetLoadTimeDataDefaults(app_locale, &localized_strings);
 394
 395   static const base::StringPiece guest_tab_html(
 396       ResourceBundle::GetSharedInstance().GetRawDataResource(guest_tab_ids));
 397
 398   std::string full_html = webui::GetI18nTemplateHtml(
 399       guest_tab_html, &localized_strings);
 400
 401   new_tab_guest_html_ = base::RefCountedString::TakeString(&full_html);
 402 }
 403
 404 void NTPResourceCache::CreateNewTabHTML() {
 405   // TODO(estade): these strings should be defined in their relevant handlers
 406   // (in GetLocalizedValues) and should have more legible names.
 407   // Show the profile name in the title and most visited labels if the current
 408   // profile is not the default.
 409   PrefService* prefs = profile_->GetPrefs();
 410   base::DictionaryValue load_time_data;
 411   load_time_data.SetBoolean("bookmarkbarattached",
 412       prefs->GetBoolean(bookmarks::prefs::kShowBookmarkBar));
 413   load_time_data.SetBoolean("hasattribution",
 414       ThemeServiceFactory::GetForProfile(profile_)->HasCustomImage(
 415           IDR_THEME_NTP_ATTRIBUTION));
 416   load_time_data.SetBoolean("showAppLauncherPromo",
 417       ShouldShowAppLauncherPromo());
 418   load_time_data.SetString("title",
 419       l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE));
 420   load_time_data.SetString("webStoreTitle",
 421       l10n_util::GetStringUTF16(IDS_EXTENSION_WEB_STORE_TITLE));
 422   load_time_data.SetString("webStoreTitleShort",
 423       l10n_util::GetStringUTF16(IDS_EXTENSION_WEB_STORE_TITLE_SHORT));
 424   load_time_data.SetString("attributionintro",
 425       l10n_util::GetStringUTF16(IDS_NEW_TAB_ATTRIBUTION_INTRO));
 426   load_time_data.SetString("appuninstall",
 427       l10n_util::GetStringUTF16(IDS_EXTENSIONS_UNINSTALL));
 428   load_time_data.SetString("appoptions",
 429       l10n_util::GetStringUTF16(IDS_NEW_TAB_APP_OPTIONS));
 430   load_time_data.SetString("appdetails",
 431       l10n_util::GetStringUTF16(IDS_NEW_TAB_APP_DETAILS));
 432   load_time_data.SetString("appinfodialog",
 433       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_SHOW_INFO));
 434   load_time_data.SetString("appcreateshortcut",
 435       l10n_util::GetStringUTF16(IDS_NEW_TAB_APP_CREATE_SHORTCUT));
 436   load_time_data.SetString("appDefaultPageName",
 437       l10n_util::GetStringUTF16(IDS_APP_DEFAULT_PAGE_NAME));
 438   load_time_data.SetString("applaunchtypepinned",
 439       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_OPEN_PINNED));
 440   load_time_data.SetString("applaunchtyperegular",
 441       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_OPEN_REGULAR));
 442   load_time_data.SetString("applaunchtypewindow",
 443       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_OPEN_WINDOW));
 444   load_time_data.SetString("applaunchtypefullscreen",
 445       l10n_util::GetStringUTF16(IDS_APP_CONTEXT_MENU_OPEN_FULLSCREEN));
 446   load_time_data.SetString("syncpromotext",
 447       l10n_util::GetStringUTF16(IDS_SYNC_START_SYNC_BUTTON_LABEL));
 448   load_time_data.SetString("syncLinkText",
 449       l10n_util::GetStringUTF16(IDS_SYNC_ADVANCED_OPTIONS));
 450   load_time_data.SetBoolean("shouldShowSyncLogin",
 451                             AppLauncherLoginHandler::ShouldShow(profile_));
 452   load_time_data.SetString("learnMore",
 453       l10n_util::GetStringUTF16(IDS_LEARN_MORE));
 454   const std::string& app_locale = g_browser_process->GetApplicationLocale();
 455   load_time_data.SetString("webStoreLink",
 456       google_util::AppendGoogleLocaleParam(
 457           GURL(extension_urls::GetWebstoreLaunchURL()), app_locale).spec());
 458   load_time_data.SetString("appInstallHintText",
 459       l10n_util::GetStringUTF16(IDS_NEW_TAB_APP_INSTALL_HINT_LABEL));
 460   load_time_data.SetString("learn_more",
 461       l10n_util::GetStringUTF16(IDS_LEARN_MORE));
 462   load_time_data.SetString("tile_grid_screenreader_accessible_description",
 463       l10n_util::GetStringUTF16(IDS_NEW_TAB_TILE_GRID_ACCESSIBLE_DESCRIPTION));
 464   load_time_data.SetString("page_switcher_change_title",
 465       l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_SWITCHER_CHANGE_TITLE));
 466   load_time_data.SetString("page_switcher_same_title",
 467       l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_SWITCHER_SAME_TITLE));
 468   load_time_data.SetString("appsPromoTitle",
 469       l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_APPS_PROMO_TITLE));
 470   // On Mac OS X 10.7+, horizontal scrolling can be treated as a back or
 471   // forward gesture. Pass through a flag that indicates whether or not that
 472   // feature is enabled.
 473   load_time_data.SetBoolean("isSwipeTrackingFromScrollEventsEnabled",
 474                             is_swipe_tracking_from_scroll_events_enabled_);
 475
 476   load_time_data.SetBoolean("showApps", should_show_apps_page_);
 477   load_time_data.SetBoolean("showWebStoreIcon",
 478                             !prefs->GetBoolean(prefs::kHideWebStoreIcon));
 479
 480   bool bookmark_apps_enabled = extensions::util::IsNewBookmarkAppsEnabled();
 481   load_time_data.SetBoolean("enableNewBookmarkApps", bookmark_apps_enabled);
 482
 483   load_time_data.SetBoolean("canShowAppInfoDialog",
 484                             CanShowAppInfoDialog());
 485
 486 #if defined(OS_CHROMEOS)
 487   load_time_data.SetString("expandMenu",
 488       l10n_util::GetStringUTF16(IDS_NEW_TAB_CLOSE_MENU_EXPAND));
 489 #endif
 490
 491   NewTabPageHandler::GetLocalizedValues(profile_, &load_time_data);
 492   AppLauncherLoginHandler::GetLocalizedValues(profile_, &load_time_data);
 493
 494   webui::SetLoadTimeDataDefaults(app_locale, &load_time_data);
 495
 496   // Control fade and resize animations.
 497   load_time_data.SetBoolean("anim",
 498                             gfx::Animation::ShouldRenderRichAnimation());
 499
 500   ui::ThemeProvider* tp = ThemeServiceFactory::GetForProfile(profile_);
 501   int alignment = tp->GetDisplayProperty(
 502       ThemeProperties::NTP_BACKGROUND_ALIGNMENT);
 503   load_time_data.SetString("themegravity",
 504       (alignment & ThemeProperties::ALIGN_RIGHT) ? "right" : "");
 505
 506   // Disable the promo if this is the first run, otherwise set the promo string
 507   // for display if there is a valid outstanding promo.
 508   if (first_run::IsChromeFirstRun()) {
 509     NotificationPromo::HandleClosed(NotificationPromo::NTP_NOTIFICATION_PROMO);
 510   } else {
 511     NotificationPromo notification_promo;
 512     notification_promo.InitFromPrefs(NotificationPromo::NTP_NOTIFICATION_PROMO);
 513     if (notification_promo.CanShow()) {
 514       load_time_data.SetString("notificationPromoText",
 515                                notification_promo.promo_text());
 516       DVLOG(1) << "Notification promo:" << notification_promo.promo_text();
 517     }
 518
 519     NotificationPromo bubble_promo;
 520     bubble_promo.InitFromPrefs(NotificationPromo::NTP_BUBBLE_PROMO);
 521     if (bubble_promo.CanShow()) {
 522       load_time_data.SetString("bubblePromoText",
 523                                bubble_promo.promo_text());
 524       DVLOG(1) << "Bubble promo:" << bubble_promo.promo_text();
 525     }
 526   }
 527
 528   load_time_data.SetBoolean(
 529       "isUserSignedIn",
 530       SigninManagerFactory::GetForProfile(profile_)->IsAuthenticated());
 531
 532   // Load the new tab page appropriate for this build.
 533   base::StringPiece new_tab_html(ResourceBundle::GetSharedInstance().
 534       GetRawDataResource(IDR_NEW_TAB_4_HTML));
 535   std::string full_html =
 536       webui::GetI18nTemplateHtml(new_tab_html, &load_time_data);
 537   new_tab_html_ = base::RefCountedString::TakeString(&full_html);
 538 }
 539
 540 void NTPResourceCache::CreateNewTabIncognitoCSS() {
 541   ui::ThemeProvider* tp = ThemeServiceFactory::GetForProfile(profile_);
 542   DCHECK(tp);
 543
 544   // Get our theme colors
 545   SkColor color_background =
 546       GetThemeColor(tp, ThemeProperties::COLOR_NTP_BACKGROUND);
 547
 548   // Generate the replacements.
 549   std::vector<std::string> subst;
 550
 551   // Cache-buster for background.
 552   subst.push_back(
 553       profile_->GetPrefs()->GetString(prefs::kCurrentThemeID));  // $1
 554
 555   // Colors.
 556   subst.push_back(SkColorToRGBAString(color_background));  // $2
 557   subst.push_back(GetNewTabBackgroundCSS(tp, false));  // $3
 558   subst.push_back(GetNewTabBackgroundCSS(tp, true));  // $4
 559   subst.push_back(GetNewTabBackgroundTilingCSS(tp));  // $5
 560
 561   // Get our template.
 562   static const base::StringPiece new_tab_theme_css(
 563       ResourceBundle::GetSharedInstance().GetRawDataResource(
 564           IDR_NEW_INCOGNITO_TAB_THEME_CSS));
 565
 566   // Create the string from our template and the replacements.
 567   std::string full_css = ReplaceStringPlaceholders(
 568       new_tab_theme_css, subst, NULL);
 569
 570   new_tab_incognito_css_ = base::RefCountedString::TakeString(&full_css);
 571 }
 572
 573 void NTPResourceCache::CreateNewTabGuestCSS() {
 574   ui::ThemeProvider* tp = ThemeServiceFactory::GetForProfile(profile_);
 575   DCHECK(tp);
 576
 577   // Get our theme colors
 578   SkColor color_background =
 579       GetThemeColor(tp, ThemeProperties::COLOR_NTP_BACKGROUND);
 580
 581   // Generate the replacements.
 582   std::vector<std::string> subst;
 583
 584   // Cache-buster for background.
 585   subst.push_back(
 586       profile_->GetPrefs()->GetString(prefs::kCurrentThemeID));  // $1
 587
 588   // Colors.
 589   subst.push_back(SkColorToRGBAString(color_background));  // $2
 590   subst.push_back(GetNewTabBackgroundCSS(tp, false));  // $3
 591   subst.push_back(GetNewTabBackgroundCSS(tp, true));  // $4
 592   subst.push_back(GetNewTabBackgroundTilingCSS(tp));  // $5
 593
 594   // Get our template.
 595   static const base::StringPiece new_tab_theme_css(
 596       ResourceBundle::GetSharedInstance().GetRawDataResource(
 597           IDR_NEW_INCOGNITO_TAB_THEME_CSS));
 598
 599   // Create the string from our template and the replacements.
 600   std::string full_css = ReplaceStringPlaceholders(
 601       new_tab_theme_css, subst, NULL);
 602
 603   new_tab_guest_css_ = base::RefCountedString::TakeString(&full_css);
 604 }
 605
 606 void NTPResourceCache::CreateNewTabCSS() {
 607   ui::ThemeProvider* tp = ThemeServiceFactory::GetForProfile(profile_);
 608   DCHECK(tp);
 609
 610   // Get our theme colors
 611   SkColor color_background =
 612       GetThemeColor(tp, ThemeProperties::COLOR_NTP_BACKGROUND);
 613   SkColor color_text = GetThemeColor(tp, ThemeProperties::COLOR_NTP_TEXT);
 614   SkColor color_link = GetThemeColor(tp, ThemeProperties::COLOR_NTP_LINK);
 615   SkColor color_link_underline =
 616       GetThemeColor(tp, ThemeProperties::COLOR_NTP_LINK_UNDERLINE);
 617
 618   SkColor color_section =
 619       GetThemeColor(tp, ThemeProperties::COLOR_NTP_SECTION);
 620   SkColor color_section_text =
 621       GetThemeColor(tp, ThemeProperties::COLOR_NTP_SECTION_TEXT);
 622   SkColor color_section_link =
 623       GetThemeColor(tp, ThemeProperties::COLOR_NTP_SECTION_LINK);
 624   SkColor color_section_link_underline =
 625       GetThemeColor(tp, ThemeProperties::COLOR_NTP_SECTION_LINK_UNDERLINE);
 626   SkColor color_section_header_text =
 627       GetThemeColor(tp, ThemeProperties::COLOR_NTP_SECTION_HEADER_TEXT);
 628   SkColor color_section_header_text_hover =
 629       GetThemeColor(tp, ThemeProperties::COLOR_NTP_SECTION_HEADER_TEXT_HOVER);
 630   SkColor color_section_header_rule =
 631       GetThemeColor(tp, ThemeProperties::COLOR_NTP_SECTION_HEADER_RULE);
 632   SkColor color_section_header_rule_light =
 633       GetThemeColor(tp, ThemeProperties::COLOR_NTP_SECTION_HEADER_RULE_LIGHT);
 634   SkColor color_text_light =
 635       GetThemeColor(tp, ThemeProperties::COLOR_NTP_TEXT_LIGHT);
 636
 637   SkColor color_header =
 638       GetThemeColor(tp, ThemeProperties::COLOR_NTP_HEADER);
 639   // Generate a lighter color for the header gradients.
 640   color_utils::HSL header_lighter;
 641   color_utils::SkColorToHSL(color_header, &header_lighter);
 642   header_lighter.l += (1 - header_lighter.l) * 0.33;
 643   SkColor color_header_gradient_light =
 644       color_utils::HSLToSkColor(header_lighter, SkColorGetA(color_header));
 645
 646   // Generate section border color from the header color. See
 647   // BookmarkBarView::Paint for how we do this for the bookmark bar
 648   // borders.
 649   SkColor color_section_border =
 650       SkColorSetARGB(80,
 651                      SkColorGetR(color_header),
 652                      SkColorGetG(color_header),
 653                      SkColorGetB(color_header));
 654
 655   // Generate the replacements.
 656   std::vector<std::string> subst;
 657
 658   // Cache-buster for background.
 659   subst.push_back(
 660       profile_->GetPrefs()->GetString(prefs::kCurrentThemeID));  // $1
 661
 662   // Colors.
 663   subst.push_back(SkColorToRGBAString(color_background));  // $2
 664   subst.push_back(GetNewTabBackgroundCSS(tp, false));  // $3
 665   subst.push_back(GetNewTabBackgroundCSS(tp, true));  // $4
 666   subst.push_back(GetNewTabBackgroundTilingCSS(tp));  // $5
 667   subst.push_back(SkColorToRGBAString(color_header));  // $6
 668   subst.push_back(SkColorToRGBAString(color_header_gradient_light));  // $7
 669   subst.push_back(SkColorToRGBAString(color_text));  // $8
 670   subst.push_back(SkColorToRGBAString(color_link));  // $9
 671   subst.push_back(SkColorToRGBAString(color_section));  // $10
 672   subst.push_back(SkColorToRGBAString(color_section_border));  // $11
 673   subst.push_back(SkColorToRGBAString(color_section_text));  // $12
 674   subst.push_back(SkColorToRGBAString(color_section_link));  // $13
 675   subst.push_back(SkColorToRGBAString(color_link_underline));  // $14
 676   subst.push_back(SkColorToRGBAString(color_section_link_underline));  // $15
 677   subst.push_back(SkColorToRGBAString(color_section_header_text));  // $16
 678   subst.push_back(SkColorToRGBAString(
 679       color_section_header_text_hover));  // $17
 680   subst.push_back(SkColorToRGBAString(color_section_header_rule));  // $18
 681   subst.push_back(SkColorToRGBAString(
 682       color_section_header_rule_light));  // $19
 683   subst.push_back(SkColorToRGBAString(
 684       SkColorSetA(color_section_header_rule, 0)));  // $20
 685   subst.push_back(SkColorToRGBAString(color_text_light));  // $21
 686   subst.push_back(SkColorToRGBComponents(color_section_border));  // $22
 687   subst.push_back(SkColorToRGBComponents(color_text));  // $23
 688
 689   // Get our template.
 690   static const base::StringPiece new_tab_theme_css(
 691       ResourceBundle::GetSharedInstance().GetRawDataResource(
 692           IDR_NEW_TAB_4_THEME_CSS));
 693
 694   // Create the string from our template and the replacements.
 695   std::string css_string;
 696   css_string = ReplaceStringPlaceholders(new_tab_theme_css, subst, NULL);
 697   new_tab_css_ = base::RefCountedString::TakeString(&css_string);
 698 }