prefs_tab_helper.cc revision 868fa2fe829687343ffae624259930155e16dbd8
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/prefs/prefs_tab_helper.h" 6 7#include <string> 8 9#include "base/prefs/overlay_user_pref_store.h" 10#include "base/prefs/pref_service.h" 11#include "base/strings/string_util.h" 12#include "base/strings/stringprintf.h" 13#include "base/strings/utf_string_conversions.h" 14#include "chrome/browser/browser_process.h" 15#include "chrome/browser/profiles/profile.h" 16#include "chrome/browser/renderer_preferences_util.h" 17#include "chrome/common/chrome_notification_types.h" 18#include "chrome/common/pref_font_webkit_names.h" 19#include "chrome/common/pref_names.h" 20#include "chrome/common/pref_names_util.h" 21#include "components/user_prefs/pref_registry_syncable.h" 22#include "content/public/browser/notification_details.h" 23#include "content/public/browser/notification_service.h" 24#include "content/public/browser/render_view_host.h" 25#include "content/public/browser/web_contents.h" 26#include "grit/locale_settings.h" 27#include "grit/platform_locale_settings.h" 28#include "third_party/icu/public/common/unicode/uchar.h" 29#include "third_party/icu/public/common/unicode/uscript.h" 30#include "webkit/common/webpreferences.h" 31 32#if defined(OS_POSIX) && !defined(OS_MACOSX) && defined(ENABLE_THEMES) 33#include "chrome/browser/themes/theme_service.h" 34#include "chrome/browser/themes/theme_service_factory.h" 35#endif 36 37using content::WebContents; 38 39DEFINE_WEB_CONTENTS_USER_DATA_KEY(PrefsTabHelper); 40 41namespace { 42 43// Registers prefs only used for migration. 44void RegisterPrefsToMigrate(user_prefs::PrefRegistrySyncable* prefs) { 45 prefs->RegisterLocalizedStringPref( 46 prefs::kWebKitOldStandardFontFamily, 47 IDS_STANDARD_FONT_FAMILY, 48 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 49 prefs->RegisterLocalizedStringPref( 50 prefs::kWebKitOldFixedFontFamily, 51 IDS_FIXED_FONT_FAMILY, 52 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 53 prefs->RegisterLocalizedStringPref( 54 prefs::kWebKitOldSerifFontFamily, 55 IDS_SERIF_FONT_FAMILY, 56 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 57 prefs->RegisterLocalizedStringPref( 58 prefs::kWebKitOldSansSerifFontFamily, 59 IDS_SANS_SERIF_FONT_FAMILY, 60 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 61 prefs->RegisterLocalizedStringPref( 62 prefs::kWebKitOldCursiveFontFamily, 63 IDS_CURSIVE_FONT_FAMILY, 64 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 65 prefs->RegisterLocalizedStringPref( 66 prefs::kWebKitOldFantasyFontFamily, 67 IDS_FANTASY_FONT_FAMILY, 68 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 69 prefs->RegisterLocalizedStringPref( 70 prefs::kGlobalDefaultCharset, 71 IDS_DEFAULT_ENCODING, 72 user_prefs::PrefRegistrySyncable::SYNCABLE_PREF); 73 prefs->RegisterLocalizedIntegerPref( 74 prefs::kWebKitGlobalDefaultFontSize, 75 IDS_DEFAULT_FONT_SIZE, 76 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 77 prefs->RegisterLocalizedIntegerPref( 78 prefs::kWebKitGlobalDefaultFixedFontSize, 79 IDS_DEFAULT_FIXED_FONT_SIZE, 80 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 81 prefs->RegisterLocalizedIntegerPref( 82 prefs::kWebKitGlobalMinimumFontSize, 83 IDS_MINIMUM_FONT_SIZE, 84 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 85 prefs->RegisterLocalizedIntegerPref( 86 prefs::kWebKitGlobalMinimumLogicalFontSize, 87 IDS_MINIMUM_LOGICAL_FONT_SIZE, 88 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 89 prefs->RegisterLocalizedStringPref( 90 prefs::kWebKitGlobalStandardFontFamily, 91 IDS_STANDARD_FONT_FAMILY, 92 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 93 prefs->RegisterLocalizedStringPref( 94 prefs::kWebKitGlobalFixedFontFamily, 95 IDS_FIXED_FONT_FAMILY, 96 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 97 prefs->RegisterLocalizedStringPref( 98 prefs::kWebKitGlobalSerifFontFamily, 99 IDS_SERIF_FONT_FAMILY, 100 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 101 prefs->RegisterLocalizedStringPref( 102 prefs::kWebKitGlobalSansSerifFontFamily, 103 IDS_SANS_SERIF_FONT_FAMILY, 104 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 105 prefs->RegisterLocalizedStringPref( 106 prefs::kWebKitGlobalCursiveFontFamily, 107 IDS_CURSIVE_FONT_FAMILY, 108 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 109 prefs->RegisterLocalizedStringPref( 110 prefs::kWebKitGlobalFantasyFontFamily, 111 IDS_FANTASY_FONT_FAMILY, 112 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 113} 114 115// The list of prefs we want to observe. 116const char* kPrefsToObserve[] = { 117 prefs::kDefaultCharset, 118 prefs::kWebKitAllowDisplayingInsecureContent, 119 prefs::kWebKitAllowRunningInsecureContent, 120 prefs::kWebKitDefaultFixedFontSize, 121 prefs::kWebKitDefaultFontSize, 122#if defined(OS_ANDROID) 123 prefs::kWebKitFontScaleFactor, 124 prefs::kWebKitForceEnableZoom, 125 prefs::kWebKitPasswordEchoEnabled, 126#endif 127 prefs::kWebKitJavascriptEnabled, 128 prefs::kWebKitJavaEnabled, 129 prefs::kWebKitLoadsImagesAutomatically, 130 prefs::kWebKitMinimumFontSize, 131 prefs::kWebKitMinimumLogicalFontSize, 132 prefs::kWebKitPluginsEnabled, 133 prefs::kWebkitTabsToLinks, 134 prefs::kWebKitUsesUniversalDetector 135}; 136 137const int kPrefsToObserveLength = arraysize(kPrefsToObserve); 138 139// Registers a preference under the path |pref_name| for each script used for 140// per-script font prefs. 141// For example, for WEBKIT_WEBPREFS_FONTS_SERIF ("fonts.serif"): 142// "fonts.serif.Arab", "fonts.serif.Hang", etc. are registered. 143// |fonts_with_defaults| contains all |pref_names| already registered since they 144// have a specified default value. 145void RegisterFontFamilyPrefs(user_prefs::PrefRegistrySyncable* registry, 146 const std::set<std::string>& fonts_with_defaults) { 147 148 // Expand the font concatenated with script name so this stays at RO memory 149 // rather than allocated in heap. 150 static const char* const kFontFamilyMap[] = { 151#define EXPAND_SCRIPT_FONT(map_name, script_name) map_name "." script_name, 152 153#include "chrome/common/pref_font_script_names-inl.h" 154ALL_FONT_SCRIPTS(WEBKIT_WEBPREFS_FONTS_CURSIVE) 155ALL_FONT_SCRIPTS(WEBKIT_WEBPREFS_FONTS_FANTASY) 156ALL_FONT_SCRIPTS(WEBKIT_WEBPREFS_FONTS_FIXED) 157ALL_FONT_SCRIPTS(WEBKIT_WEBPREFS_FONTS_PICTOGRAPH) 158ALL_FONT_SCRIPTS(WEBKIT_WEBPREFS_FONTS_SANSERIF) 159ALL_FONT_SCRIPTS(WEBKIT_WEBPREFS_FONTS_SERIF) 160ALL_FONT_SCRIPTS(WEBKIT_WEBPREFS_FONTS_STANDARD) 161 162#undef EXPAND_SCRIPT_FONT 163 }; 164 165 for (size_t i = 0; i < arraysize(kFontFamilyMap); ++i) { 166 const char* pref_name = kFontFamilyMap[i]; 167 if (fonts_with_defaults.find(pref_name) == fonts_with_defaults.end()) { 168 // We haven't already set a default value for this font preference, so set 169 // an empty string as the default. 170 registry->RegisterStringPref( 171 pref_name, 172 std::string(), 173 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 174 } 175 } 176} 177 178#if !defined(OS_ANDROID) 179// Registers |obs| to observe per-script font prefs under the path |map_name|. 180// On android, there's no exposed way to change these prefs, so we can save 181// ~715KB of heap and some startup cycles by avoiding observing these prefs 182// since they will never change. 183void RegisterFontFamilyMapObserver( 184 PrefChangeRegistrar* registrar, 185 const char* map_name, 186 const PrefChangeRegistrar::NamedChangeCallback& obs) { 187 DCHECK(StartsWithASCII(map_name, "webkit.webprefs.", true)); 188 for (size_t i = 0; i < prefs::kWebKitScriptsForFontFamilyMapsLength; ++i) { 189 const char* script = prefs::kWebKitScriptsForFontFamilyMaps[i]; 190 std::string pref_name = base::StringPrintf("%s.%s", map_name, script); 191 registrar->Add(pref_name.c_str(), obs); 192 } 193} 194#endif // !defined(OS_ANDROID) 195 196struct FontDefault { 197 const char* pref_name; 198 int resource_id; 199}; 200 201// Font pref defaults. The prefs that have defaults vary by platform, since not 202// all platforms have fonts for all scripts for all generic families. 203// TODO(falken): add proper defaults when possible for all 204// platforms/scripts/generic families. 205const FontDefault kFontDefaults[] = { 206 { prefs::kWebKitStandardFontFamily, IDS_STANDARD_FONT_FAMILY }, 207 { prefs::kWebKitFixedFontFamily, IDS_FIXED_FONT_FAMILY }, 208 { prefs::kWebKitSerifFontFamily, IDS_SERIF_FONT_FAMILY }, 209 { prefs::kWebKitSansSerifFontFamily, IDS_SANS_SERIF_FONT_FAMILY }, 210 { prefs::kWebKitCursiveFontFamily, IDS_CURSIVE_FONT_FAMILY }, 211 { prefs::kWebKitFantasyFontFamily, IDS_FANTASY_FONT_FAMILY }, 212 { prefs::kWebKitPictographFontFamily, IDS_PICTOGRAPH_FONT_FAMILY }, 213#if defined(OS_CHROMEOS) || defined(OS_MACOSX) || defined(OS_WIN) 214 { prefs::kWebKitStandardFontFamilyJapanese, 215 IDS_STANDARD_FONT_FAMILY_JAPANESE }, 216 { prefs::kWebKitFixedFontFamilyJapanese, IDS_FIXED_FONT_FAMILY_JAPANESE }, 217 { prefs::kWebKitSerifFontFamilyJapanese, IDS_SERIF_FONT_FAMILY_JAPANESE }, 218 { prefs::kWebKitSansSerifFontFamilyJapanese, 219 IDS_SANS_SERIF_FONT_FAMILY_JAPANESE }, 220 { prefs::kWebKitStandardFontFamilyKorean, IDS_STANDARD_FONT_FAMILY_KOREAN }, 221 { prefs::kWebKitSerifFontFamilyKorean, IDS_SERIF_FONT_FAMILY_KOREAN }, 222 { prefs::kWebKitSansSerifFontFamilyKorean, 223 IDS_SANS_SERIF_FONT_FAMILY_KOREAN }, 224 { prefs::kWebKitStandardFontFamilySimplifiedHan, 225 IDS_STANDARD_FONT_FAMILY_SIMPLIFIED_HAN }, 226 { prefs::kWebKitSerifFontFamilySimplifiedHan, 227 IDS_SERIF_FONT_FAMILY_SIMPLIFIED_HAN }, 228 { prefs::kWebKitSansSerifFontFamilySimplifiedHan, 229 IDS_SANS_SERIF_FONT_FAMILY_SIMPLIFIED_HAN }, 230 { prefs::kWebKitStandardFontFamilyTraditionalHan, 231 IDS_STANDARD_FONT_FAMILY_TRADITIONAL_HAN }, 232 { prefs::kWebKitSerifFontFamilyTraditionalHan, 233 IDS_SERIF_FONT_FAMILY_TRADITIONAL_HAN }, 234 { prefs::kWebKitSansSerifFontFamilyTraditionalHan, 235 IDS_SANS_SERIF_FONT_FAMILY_TRADITIONAL_HAN }, 236#endif 237#if defined(OS_CHROMEOS) 238 { prefs::kWebKitStandardFontFamilyArabic, IDS_STANDARD_FONT_FAMILY_ARABIC }, 239 { prefs::kWebKitSerifFontFamilyArabic, IDS_SERIF_FONT_FAMILY_ARABIC }, 240 { prefs::kWebKitSansSerifFontFamilyArabic, 241 IDS_SANS_SERIF_FONT_FAMILY_ARABIC }, 242 { prefs::kWebKitFixedFontFamilyKorean, IDS_FIXED_FONT_FAMILY_KOREAN }, 243 { prefs::kWebKitFixedFontFamilySimplifiedHan, 244 IDS_FIXED_FONT_FAMILY_SIMPLIFIED_HAN }, 245 { prefs::kWebKitFixedFontFamilyTraditionalHan, 246 IDS_FIXED_FONT_FAMILY_TRADITIONAL_HAN }, 247#elif defined(OS_WIN) 248 { prefs::kWebKitStandardFontFamilyCyrillic, 249 IDS_STANDARD_FONT_FAMILY_CYRILLIC }, 250 { prefs::kWebKitFixedFontFamilyCyrillic, IDS_FIXED_FONT_FAMILY_CYRILLIC }, 251 { prefs::kWebKitSerifFontFamilyCyrillic, IDS_SERIF_FONT_FAMILY_CYRILLIC }, 252 { prefs::kWebKitSansSerifFontFamilyCyrillic, 253 IDS_SANS_SERIF_FONT_FAMILY_CYRILLIC }, 254 { prefs::kWebKitStandardFontFamilyGreek, IDS_STANDARD_FONT_FAMILY_GREEK }, 255 { prefs::kWebKitFixedFontFamilyGreek, IDS_FIXED_FONT_FAMILY_GREEK }, 256 { prefs::kWebKitSerifFontFamilyGreek, IDS_SERIF_FONT_FAMILY_GREEK }, 257 { prefs::kWebKitSansSerifFontFamilyGreek, IDS_SANS_SERIF_FONT_FAMILY_GREEK }, 258 { prefs::kWebKitFixedFontFamilyKorean, IDS_FIXED_FONT_FAMILY_KOREAN }, 259 { prefs::kWebKitCursiveFontFamilyKorean, IDS_CURSIVE_FONT_FAMILY_KOREAN }, 260 { prefs::kWebKitFixedFontFamilySimplifiedHan, 261 IDS_FIXED_FONT_FAMILY_SIMPLIFIED_HAN }, 262 { prefs::kWebKitFixedFontFamilyTraditionalHan, 263 IDS_FIXED_FONT_FAMILY_TRADITIONAL_HAN }, 264#endif 265}; 266 267const size_t kFontDefaultsLength = arraysize(kFontDefaults); 268 269// Returns the script of the font pref |pref_name|. For example, suppose 270// |pref_name| is "webkit.webprefs.fonts.serif.Hant". Since the script code for 271// the script name "Hant" is USCRIPT_TRADITIONAL_HAN, the function returns 272// USCRIPT_TRADITIONAL_HAN. |pref_name| must be a valid font pref name. 273UScriptCode GetScriptOfFontPref(const char* pref_name) { 274 // ICU script names are four letters. 275 static const size_t kScriptNameLength = 4; 276 277 size_t len = strlen(pref_name); 278 DCHECK_GT(len, kScriptNameLength); 279 const char* scriptName = &pref_name[len - kScriptNameLength]; 280 int32 code = u_getPropertyValueEnum(UCHAR_SCRIPT, scriptName); 281 DCHECK(code >= 0 && code < USCRIPT_CODE_LIMIT); 282 return static_cast<UScriptCode>(code); 283} 284 285// If |scriptCode| is a member of a family of "similar" script codes, returns 286// the script code in that family that is used in font pref names. For example, 287// USCRIPT_HANGUL and USCRIPT_KOREAN are considered equivalent for the purposes 288// of font selection. Chrome uses the script code USCRIPT_HANGUL (script name 289// "Hang") in Korean font pref names (for example, 290// "webkit.webprefs.fonts.serif.Hang"). So, if |scriptCode| is USCRIPT_KOREAN, 291// the function returns USCRIPT_HANGUL. If |scriptCode| is not a member of such 292// a family, returns |scriptCode|. 293UScriptCode GetScriptForFontPrefMatching(UScriptCode scriptCode) { 294 switch (scriptCode) { 295 case USCRIPT_HIRAGANA: 296 case USCRIPT_KATAKANA: 297 case USCRIPT_KATAKANA_OR_HIRAGANA: 298 return USCRIPT_JAPANESE; 299 case USCRIPT_KOREAN: 300 return USCRIPT_HANGUL; 301 default: 302 return scriptCode; 303 } 304} 305 306// Returns the primary script used by the browser's UI locale. For example, if 307// the locale is "ru", the function returns USCRIPT_CYRILLIC, and if the locale 308// is "en", the function returns USCRIPT_LATIN. 309UScriptCode GetScriptOfBrowserLocale() { 310 std::string locale = g_browser_process->GetApplicationLocale(); 311 312 // For Chinese locales, uscript_getCode() just returns USCRIPT_HAN but our 313 // per-script fonts are for USCRIPT_SIMPLIFIED_HAN and 314 // USCRIPT_TRADITIONAL_HAN. 315 if (locale == "zh-CN") 316 return USCRIPT_SIMPLIFIED_HAN; 317 if (locale == "zh-TW") 318 return USCRIPT_TRADITIONAL_HAN; 319 320 UScriptCode code = USCRIPT_INVALID_CODE; 321 UErrorCode err = U_ZERO_ERROR; 322 uscript_getCode(locale.c_str(), &code, 1, &err); 323 324 // Ignore the error that multiple scripts could be returned, since we only 325 // want one script. 326 if (U_FAILURE(err) && err != U_BUFFER_OVERFLOW_ERROR) 327 code = USCRIPT_INVALID_CODE; 328 return GetScriptForFontPrefMatching(code); 329} 330 331const struct { 332 const char* from; 333 const char* to; 334} kPrefNamesToMigrate[] = { 335 // Migrate prefs like "webkit.webprefs.standard_font_family" to 336 // "webkit.webprefs.fonts.standard.Zyyy". This moves the formerly 337 // "non-per-script" font prefs into the per-script font pref maps, as the 338 // entry for the "Common" script (Zyyy is the ISO 15924 script code for the 339 // Common script). The |from| prefs will exist if the migration to global 340 // prefs (for the per-tab pref mechanism, which has since been removed) never 341 // occurred. 342 { prefs::kWebKitOldCursiveFontFamily, 343 prefs::kWebKitCursiveFontFamily }, 344 { prefs::kWebKitOldFantasyFontFamily, 345 prefs::kWebKitFantasyFontFamily }, 346 { prefs::kWebKitOldFixedFontFamily, 347 prefs::kWebKitFixedFontFamily }, 348 { prefs::kWebKitOldSansSerifFontFamily, 349 prefs::kWebKitSansSerifFontFamily }, 350 { prefs::kWebKitOldSerifFontFamily, 351 prefs::kWebKitSerifFontFamily }, 352 { prefs::kWebKitOldStandardFontFamily, 353 prefs::kWebKitStandardFontFamily }, 354 355 // Migrate "global" prefs. These will exist if the migration to global prefs 356 // (for the per-tab pref mechanism, which has since been removed) occurred. 357 // In addition, this moves the formerly "non-per-script" font prefs into the 358 // per-script font pref maps, as above. 359 { prefs::kGlobalDefaultCharset, 360 prefs::kDefaultCharset }, 361 { prefs::kWebKitGlobalDefaultFixedFontSize, 362 prefs::kWebKitDefaultFixedFontSize }, 363 { prefs::kWebKitGlobalDefaultFontSize, 364 prefs::kWebKitDefaultFontSize }, 365 { prefs::kWebKitGlobalMinimumFontSize, 366 prefs::kWebKitMinimumFontSize }, 367 { prefs::kWebKitGlobalMinimumLogicalFontSize, 368 prefs::kWebKitMinimumLogicalFontSize }, 369 { prefs::kWebKitGlobalCursiveFontFamily, 370 prefs::kWebKitCursiveFontFamily }, 371 { prefs::kWebKitGlobalFantasyFontFamily, 372 prefs::kWebKitFantasyFontFamily }, 373 { prefs::kWebKitGlobalFixedFontFamily, 374 prefs::kWebKitFixedFontFamily }, 375 { prefs::kWebKitGlobalSansSerifFontFamily, 376 prefs::kWebKitSansSerifFontFamily }, 377 { prefs::kWebKitGlobalSerifFontFamily, 378 prefs::kWebKitSerifFontFamily }, 379 { prefs::kWebKitGlobalStandardFontFamily, 380 prefs::kWebKitStandardFontFamily } 381}; 382 383const int kPrefsToMigrateLength = ARRAYSIZE_UNSAFE(kPrefNamesToMigrate); 384 385// Sets a font family pref in |prefs| to |pref_value|. 386void OverrideFontFamily(WebPreferences* prefs, 387 const std::string& generic_family, 388 const std::string& script, 389 const std::string& pref_value) { 390 webkit_glue::ScriptFontFamilyMap* map = NULL; 391 if (generic_family == "standard") 392 map = &prefs->standard_font_family_map; 393 else if (generic_family == "fixed") 394 map = &prefs->fixed_font_family_map; 395 else if (generic_family == "serif") 396 map = &prefs->serif_font_family_map; 397 else if (generic_family == "sansserif") 398 map = &prefs->sans_serif_font_family_map; 399 else if (generic_family == "cursive") 400 map = &prefs->cursive_font_family_map; 401 else if (generic_family == "fantasy") 402 map = &prefs->fantasy_font_family_map; 403 else if (generic_family == "pictograph") 404 map = &prefs->pictograph_font_family_map; 405 else 406 NOTREACHED() << "Unknown generic font family: " << generic_family; 407 (*map)[script] = UTF8ToUTF16(pref_value); 408} 409 410} // namespace 411 412PrefsTabHelper::PrefsTabHelper(WebContents* contents) 413 : web_contents_(contents) { 414 PrefService* prefs = GetProfile()->GetPrefs(); 415 pref_change_registrar_.Init(prefs); 416 if (prefs) { 417 base::Closure renderer_callback = base::Bind( 418 &PrefsTabHelper::UpdateRendererPreferences, base::Unretained(this)); 419 pref_change_registrar_.Add(prefs::kDefaultZoomLevel, renderer_callback); 420 pref_change_registrar_.Add(prefs::kEnableDoNotTrack, renderer_callback); 421 pref_change_registrar_.Add(prefs::kEnableReferrers, renderer_callback); 422 423 PrefChangeRegistrar::NamedChangeCallback webkit_callback = base::Bind( 424 &PrefsTabHelper::OnWebPrefChanged, base::Unretained(this)); 425 for (int i = 0; i < kPrefsToObserveLength; ++i) { 426 const char* pref_name = kPrefsToObserve[i]; 427 DCHECK(std::string(pref_name) == prefs::kDefaultCharset || 428 StartsWithASCII(pref_name, "webkit.webprefs.", true)); 429 pref_change_registrar_.Add(pref_name, webkit_callback); 430 } 431 432#if !defined(OS_ANDROID) 433 RegisterFontFamilyMapObserver(&pref_change_registrar_, 434 prefs::kWebKitStandardFontFamilyMap, 435 webkit_callback); 436 RegisterFontFamilyMapObserver(&pref_change_registrar_, 437 prefs::kWebKitFixedFontFamilyMap, 438 webkit_callback); 439 RegisterFontFamilyMapObserver(&pref_change_registrar_, 440 prefs::kWebKitSerifFontFamilyMap, 441 webkit_callback); 442 RegisterFontFamilyMapObserver(&pref_change_registrar_, 443 prefs::kWebKitSansSerifFontFamilyMap, 444 webkit_callback); 445 RegisterFontFamilyMapObserver(&pref_change_registrar_, 446 prefs::kWebKitCursiveFontFamilyMap, 447 webkit_callback); 448 RegisterFontFamilyMapObserver(&pref_change_registrar_, 449 prefs::kWebKitFantasyFontFamilyMap, 450 webkit_callback); 451 RegisterFontFamilyMapObserver(&pref_change_registrar_, 452 prefs::kWebKitPictographFontFamilyMap, 453 webkit_callback); 454#endif // !defined(OS_ANDROID) 455 } 456 457 renderer_preferences_util::UpdateFromSystemSettings( 458 web_contents_->GetMutableRendererPrefs(), GetProfile()); 459 460#if !defined(OS_ANDROID) 461 registrar_.Add(this, chrome::NOTIFICATION_USER_STYLE_SHEET_UPDATED, 462 content::NotificationService::AllSources()); 463#endif 464#if defined(OS_POSIX) && !defined(OS_MACOSX) && defined(ENABLE_THEMES) 465 registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED, 466 content::Source<ThemeService>( 467 ThemeServiceFactory::GetForProfile(GetProfile()))); 468#endif 469#if defined(USE_AURA) 470 registrar_.Add(this, 471 chrome::NOTIFICATION_BROWSER_FLING_CURVE_PARAMETERS_CHANGED, 472 content::NotificationService::AllSources()); 473#endif 474} 475 476PrefsTabHelper::~PrefsTabHelper() { 477} 478 479// static 480void PrefsTabHelper::InitIncognitoUserPrefStore( 481 OverlayUserPrefStore* pref_store) { 482 // List of keys that cannot be changed in the user prefs file by the incognito 483 // profile. All preferences that store information about the browsing history 484 // or behavior of the user should have this property. 485 pref_store->RegisterOverlayPref(prefs::kBrowserWindowPlacement); 486 pref_store->RegisterOverlayPref(prefs::kSaveFileDefaultDirectory); 487#if defined(OS_ANDROID) || defined(OS_IOS) 488 pref_store->RegisterOverlayPref(prefs::kProxy); 489#endif // defined(OS_ANDROID) || defined(OS_IOS) 490} 491 492// static 493void PrefsTabHelper::RegisterUserPrefs( 494 user_prefs::PrefRegistrySyncable* registry) { 495 WebPreferences pref_defaults; 496 registry->RegisterBooleanPref( 497 prefs::kWebKitJavascriptEnabled, 498 pref_defaults.javascript_enabled, 499 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 500 registry->RegisterBooleanPref( 501 prefs::kWebKitWebSecurityEnabled, 502 pref_defaults.web_security_enabled, 503 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 504 registry->RegisterBooleanPref( 505 prefs::kWebKitJavascriptCanOpenWindowsAutomatically, 506 true, 507 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 508 registry->RegisterBooleanPref( 509 prefs::kWebKitLoadsImagesAutomatically, 510 pref_defaults.loads_images_automatically, 511 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 512 registry->RegisterBooleanPref( 513 prefs::kWebKitPluginsEnabled, 514 pref_defaults.plugins_enabled, 515 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 516 registry->RegisterBooleanPref( 517 prefs::kWebKitDomPasteEnabled, 518 pref_defaults.dom_paste_enabled, 519 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 520 registry->RegisterBooleanPref( 521 prefs::kWebKitShrinksStandaloneImagesToFit, 522 pref_defaults.shrinks_standalone_images_to_fit, 523 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 524 registry->RegisterDictionaryPref( 525 prefs::kWebKitInspectorSettings, 526 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 527 registry->RegisterBooleanPref( 528 prefs::kWebKitTextAreasAreResizable, 529 pref_defaults.text_areas_are_resizable, 530 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 531 registry->RegisterBooleanPref( 532 prefs::kWebKitJavaEnabled, 533 pref_defaults.java_enabled, 534 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 535 registry->RegisterBooleanPref( 536 prefs::kWebkitTabsToLinks, 537 pref_defaults.tabs_to_links, 538 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 539 registry->RegisterBooleanPref( 540 prefs::kWebKitAllowRunningInsecureContent, 541 false, 542 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 543 registry->RegisterBooleanPref( 544 prefs::kWebKitAllowDisplayingInsecureContent, 545 true, 546 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 547 registry->RegisterBooleanPref( 548 prefs::kEnableReferrers, 549 true, 550 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 551#if defined(OS_ANDROID) 552 registry->RegisterDoublePref( 553 prefs::kWebKitFontScaleFactor, 554 pref_defaults.font_scale_factor, 555 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 556 registry->RegisterBooleanPref( 557 prefs::kWebKitForceEnableZoom, 558 pref_defaults.force_enable_zoom, 559 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 560 registry->RegisterBooleanPref( 561 prefs::kWebKitPasswordEchoEnabled, 562 pref_defaults.password_echo_enabled, 563 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 564#endif 565 registry->RegisterLocalizedStringPref( 566 prefs::kAcceptLanguages, 567 IDS_ACCEPT_LANGUAGES, 568 user_prefs::PrefRegistrySyncable::SYNCABLE_PREF); 569 registry->RegisterLocalizedStringPref( 570 prefs::kDefaultCharset, 571 IDS_DEFAULT_ENCODING, 572 user_prefs::PrefRegistrySyncable::SYNCABLE_PREF); 573 574 // Register font prefs that have defaults. 575 std::set<std::string> fonts_with_defaults; 576 UScriptCode browser_script = GetScriptOfBrowserLocale(); 577 for (size_t i = 0; i < kFontDefaultsLength; ++i) { 578 const FontDefault& pref = kFontDefaults[i]; 579 UScriptCode pref_script = GetScriptOfFontPref(pref.pref_name); 580 581 // Suppress this default font pref value if it is for the primary script of 582 // the browser's UI locale. For example, if the pref is for the sans-serif 583 // font for the Cyrillic script, and the browser locale is "ru" (Russian), 584 // the default is suppressed. Otherwise, the default would override the 585 // user's font preferences when viewing pages in their native language. 586 // This is because users have no way yet of customizing their per-script 587 // font preferences. The font prefs accessible in the options UI are for 588 // the default, unknown script; these prefs have less priority than the 589 // per-script font prefs when the script of the content is known. This code 590 // can possibly be removed later if users can easily access per-script font 591 // prefs (e.g., via the extensions workflow), or the problem turns out to 592 // not be really critical after all. 593 if (browser_script != pref_script) { 594 registry->RegisterLocalizedStringPref( 595 pref.pref_name, 596 pref.resource_id, 597 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 598 fonts_with_defaults.insert(pref.pref_name); 599 } 600 } 601 602 // Register font prefs that don't have defaults. 603 RegisterFontFamilyPrefs(registry, fonts_with_defaults); 604 605 registry->RegisterLocalizedIntegerPref( 606 prefs::kWebKitDefaultFontSize, 607 IDS_DEFAULT_FONT_SIZE, 608 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 609 registry->RegisterLocalizedIntegerPref( 610 prefs::kWebKitDefaultFixedFontSize, 611 IDS_DEFAULT_FIXED_FONT_SIZE, 612 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 613 registry->RegisterLocalizedIntegerPref( 614 prefs::kWebKitMinimumFontSize, 615 IDS_MINIMUM_FONT_SIZE, 616 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 617 registry->RegisterLocalizedIntegerPref( 618 prefs::kWebKitMinimumLogicalFontSize, 619 IDS_MINIMUM_LOGICAL_FONT_SIZE, 620 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 621 registry->RegisterLocalizedBooleanPref( 622 prefs::kWebKitUsesUniversalDetector, 623 IDS_USES_UNIVERSAL_DETECTOR, 624 user_prefs::PrefRegistrySyncable::SYNCABLE_PREF); 625 registry->RegisterLocalizedStringPref( 626 prefs::kStaticEncodings, 627 IDS_STATIC_ENCODING_LIST, 628 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 629 registry->RegisterStringPref( 630 prefs::kRecentlySelectedEncoding, 631 std::string(), 632 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 633 634 RegisterPrefsToMigrate(registry); 635} 636 637void PrefsTabHelper::MigrateUserPrefs(PrefService* prefs) { 638 for (int i = 0; i < kPrefsToMigrateLength; ++i) { 639 const PrefService::Preference* pref = 640 prefs->FindPreference(kPrefNamesToMigrate[i].from); 641 if (pref && !pref->IsDefaultValue()) { 642 prefs->Set(kPrefNamesToMigrate[i].to, *pref->GetValue()); 643 prefs->ClearPref(kPrefNamesToMigrate[i].from); 644 } 645 } 646} 647 648void PrefsTabHelper::Observe(int type, 649 const content::NotificationSource& source, 650 const content::NotificationDetails& details) { 651 switch (type) { 652#if !defined(OS_ANDROID) 653 case chrome::NOTIFICATION_USER_STYLE_SHEET_UPDATED: 654 UpdateWebPreferences(); 655 break; 656#endif // !defined(OS_ANDROID) 657#if defined(OS_POSIX) && !defined(OS_MACOSX) && defined(ENABLE_THEMES) 658 case chrome::NOTIFICATION_BROWSER_THEME_CHANGED: { 659 UpdateRendererPreferences(); 660 break; 661 } 662#endif 663#if defined(USE_AURA) 664 case chrome::NOTIFICATION_BROWSER_FLING_CURVE_PARAMETERS_CHANGED: { 665 UpdateRendererPreferences(); 666 break; 667 } 668#endif // defined(USE_AURA) 669 default: 670 NOTREACHED(); 671 } 672} 673 674void PrefsTabHelper::UpdateWebPreferences() { 675 web_contents_->GetRenderViewHost()->UpdateWebkitPreferences( 676 web_contents_->GetRenderViewHost()->GetWebkitPreferences()); 677} 678 679void PrefsTabHelper::UpdateRendererPreferences() { 680 renderer_preferences_util::UpdateFromSystemSettings( 681 web_contents_->GetMutableRendererPrefs(), GetProfile()); 682 web_contents_->GetRenderViewHost()->SyncRendererPrefs(); 683} 684 685Profile* PrefsTabHelper::GetProfile() { 686 return Profile::FromBrowserContext(web_contents_->GetBrowserContext()); 687} 688 689void PrefsTabHelper::OnWebPrefChanged(const std::string& pref_name) { 690 // When a font family pref's value goes from non-empty to the empty string, we 691 // must add it to the usual WebPreferences struct passed to the renderer. 692 // 693 // The empty string means to fall back to the pref for the Common script 694 // ("Zyyy"). For example, if chrome.fonts.serif.Cyrl is the empty string, it 695 // means to use chrome.fonts.serif.Zyyy for Cyrillic script. Prefs that are 696 // the empty string are normally not passed to WebKit, since there are so many 697 // of them that it would cause a performance regression. Not passing the pref 698 // is normally okay since WebKit does the desired fallback behavior regardless 699 // of whether the empty string is passed or the pref is not passed at all. But 700 // if the pref has changed from non-empty to the empty string, we must let 701 // WebKit know. 702 std::string generic_family; 703 std::string script; 704 if (pref_names_util::ParseFontNamePrefPath(pref_name, 705 &generic_family, 706 &script)) { 707 PrefService* prefs = GetProfile()->GetPrefs(); 708 std::string pref_value = prefs->GetString(pref_name.c_str()); 709 if (pref_value.empty()) { 710 WebPreferences web_prefs = 711 web_contents_->GetRenderViewHost()->GetWebkitPreferences(); 712 OverrideFontFamily(&web_prefs, generic_family, script, std::string()); 713 web_contents_->GetRenderViewHost()->UpdateWebkitPreferences(web_prefs); 714 return; 715 } 716 } 717 718 UpdateWebPreferences(); 719} 720