src/chrome/browser/ui/webui/history_ui.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/history_ui.h"
   6
   7 #include <set>
   8
   9 #include "base/bind.h"
  10 #include "base/bind_helpers.h"
  11 #include "base/command_line.h"
  12 #include "base/i18n/rtl.h"
  13 #include "base/i18n/time_formatting.h"
  14 #include "base/memory/singleton.h"
  15 #include "base/message_loop/message_loop.h"
  16 #include "base/metrics/histogram.h"
  17 #include "base/prefs/pref_service.h"
  18 #include "base/strings/string16.h"
  19 #include "base/strings/string_number_conversions.h"
  20 #include "base/strings/utf_string_conversions.h"
  21 #include "base/time/time.h"
  22 #include "base/values.h"
  23 #include "chrome/browser/bookmarks/bookmark_model.h"
  24 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
  25 #include "chrome/browser/bookmarks/bookmark_utils.h"
  26 #include "chrome/browser/chrome_notification_types.h"
  27 #include "chrome/browser/extensions/activity_log/activity_log.h"
  28 #include "chrome/browser/history/history_notifications.h"
  29 #include "chrome/browser/history/history_service_factory.h"
  30 #include "chrome/browser/history/history_types.h"
  31 #include "chrome/browser/history/web_history_service.h"
  32 #include "chrome/browser/history/web_history_service_factory.h"
  33 #include "chrome/browser/profiles/profile.h"
  34 #include "chrome/browser/search/search.h"
  35 #include "chrome/browser/sync/glue/device_info.h"
  36 #include "chrome/browser/sync/profile_sync_service.h"
  37 #include "chrome/browser/sync/profile_sync_service_factory.h"
  38 #include "chrome/browser/ui/browser_finder.h"
  39 #include "chrome/browser/ui/chrome_pages.h"
  40 #include "chrome/browser/ui/webui/favicon_source.h"
  41 #include "chrome/browser/ui/webui/metrics_handler.h"
  42 #include "chrome/common/chrome_switches.h"
  43 #include "chrome/common/pref_names.h"
  44 #include "chrome/common/url_constants.h"
  45 #include "content/public/browser/notification_details.h"
  46 #include "content/public/browser/notification_source.h"
  47 #include "content/public/browser/url_data_source.h"
  48 #include "content/public/browser/web_ui.h"
  49 #include "content/public/browser/web_ui_data_source.h"
  50 #include "grit/browser_resources.h"
  51 #include "grit/generated_resources.h"
  52 #include "grit/theme_resources.h"
  53 #include "net/base/escape.h"
  54 #include "net/base/net_util.h"
  55 #include "sync/protocol/history_delete_directive_specifics.pb.h"
  56 #include "ui/base/l10n/l10n_util.h"
  57 #include "ui/base/l10n/time_format.h"
  58 #include "ui/base/resource/resource_bundle.h"
  59
  60 #if defined(ENABLE_MANAGED_USERS)
  61 #include "chrome/browser/managed_mode/managed_mode_navigation_observer.h"
  62 #include "chrome/browser/managed_mode/managed_mode_url_filter.h"
  63 #include "chrome/browser/managed_mode/managed_user_service.h"
  64 #include "chrome/browser/managed_mode/managed_user_service_factory.h"
  65 #endif
  66
  67 #if defined(OS_ANDROID)
  68 #include "chrome/browser/ui/android/tab_model/tab_model.h"
  69 #include "chrome/browser/ui/android/tab_model/tab_model_list.h"
  70 #endif
  71
  72 #if !defined(OS_ANDROID) && !defined(OS_IOS)
  73 #include "chrome/browser/ui/webui/ntp/foreign_session_handler.h"
  74 #include "chrome/browser/ui/webui/ntp/ntp_login_handler.h"
  75 #endif
  76
  77 static const char kStringsJsFile[] = "strings.js";
  78 static const char kHistoryJsFile[] = "history.js";
  79 static const char kOtherDevicesJsFile[] = "other_devices.js";
  80
  81 // The amount of time to wait for a response from the WebHistoryService.
  82 static const int kWebHistoryTimeoutSeconds = 3;
  83
  84 namespace {
  85
  86 // Buckets for UMA histograms.
  87 enum WebHistoryQueryBuckets {
  88   WEB_HISTORY_QUERY_FAILED = 0,
  89   WEB_HISTORY_QUERY_SUCCEEDED,
  90   WEB_HISTORY_QUERY_TIMED_OUT,
  91   NUM_WEB_HISTORY_QUERY_BUCKETS
  92 };
  93
  94 #if defined(OS_MACOSX)
  95 const char kIncognitoModeShortcut[] = "("
  96     "\xE2\x87\xA7"  // Shift symbol (U+21E7 'UPWARDS WHITE ARROW').
  97     "\xE2\x8C\x98"  // Command symbol (U+2318 'PLACE OF INTEREST SIGN').
  98     "N)";
  99 #elif defined(OS_WIN)
 100 const char kIncognitoModeShortcut[] = "(Ctrl+Shift+N)";
 101 #else
 102 const char kIncognitoModeShortcut[] = "(Shift+Ctrl+N)";
 103 #endif
 104
 105 // Identifiers for the type of device from which a history entry originated.
 106 static const char kDeviceTypeLaptop[] = "laptop";
 107 static const char kDeviceTypePhone[] = "phone";
 108 static const char kDeviceTypeTablet[] = "tablet";
 109
 110 content::WebUIDataSource* CreateHistoryUIHTMLSource(Profile* profile) {
 111   PrefService* prefs = profile->GetPrefs();
 112
 113   content::WebUIDataSource* source =
 114       content::WebUIDataSource::Create(chrome::kChromeUIHistoryFrameHost);
 115   source->AddBoolean("isUserSignedIn",
 116       !prefs->GetString(prefs::kGoogleServicesUsername).empty());
 117   source->AddLocalizedString("collapseSessionMenuItemText",
 118       IDS_NEW_TAB_OTHER_SESSIONS_COLLAPSE_SESSION);
 119   source->AddLocalizedString("expandSessionMenuItemText",
 120       IDS_NEW_TAB_OTHER_SESSIONS_EXPAND_SESSION);
 121   source->AddLocalizedString("restoreSessionMenuItemText",
 122       IDS_NEW_TAB_OTHER_SESSIONS_OPEN_ALL);
 123   source->AddLocalizedString("xMore", IDS_OTHER_DEVICES_X_MORE);
 124   source->AddLocalizedString("loading", IDS_HISTORY_LOADING);
 125   source->AddLocalizedString("title", IDS_HISTORY_TITLE);
 126   source->AddLocalizedString("newest", IDS_HISTORY_NEWEST);
 127   source->AddLocalizedString("newer", IDS_HISTORY_NEWER);
 128   source->AddLocalizedString("older", IDS_HISTORY_OLDER);
 129   source->AddLocalizedString("searchResultsFor", IDS_HISTORY_SEARCHRESULTSFOR);
 130   source->AddLocalizedString("history", IDS_HISTORY_BROWSERESULTS);
 131   source->AddLocalizedString("cont", IDS_HISTORY_CONTINUED);
 132   source->AddLocalizedString("searchButton", IDS_HISTORY_SEARCH_BUTTON);
 133   source->AddLocalizedString("noSearchResults", IDS_HISTORY_NO_SEARCH_RESULTS);
 134   source->AddLocalizedString("noResults", IDS_HISTORY_NO_RESULTS);
 135   source->AddLocalizedString("historyInterval", IDS_HISTORY_INTERVAL);
 136   source->AddLocalizedString("removeSelected",
 137                              IDS_HISTORY_REMOVE_SELECTED_ITEMS);
 138   source->AddLocalizedString("clearAllHistory",
 139                              IDS_HISTORY_OPEN_CLEAR_BROWSING_DATA_DIALOG);
 140   source->AddString(
 141       "deleteWarning",
 142       l10n_util::GetStringFUTF16(IDS_HISTORY_DELETE_PRIOR_VISITS_WARNING,
 143                                  base::UTF8ToUTF16(kIncognitoModeShortcut)));
 144   source->AddLocalizedString("actionMenuDescription",
 145                              IDS_HISTORY_ACTION_MENU_DESCRIPTION);
 146   source->AddLocalizedString("removeFromHistory", IDS_HISTORY_REMOVE_PAGE);
 147   source->AddLocalizedString("moreFromSite", IDS_HISTORY_MORE_FROM_SITE);
 148   source->AddLocalizedString("groupByDomainLabel", IDS_GROUP_BY_DOMAIN_LABEL);
 149   source->AddLocalizedString("rangeLabel", IDS_HISTORY_RANGE_LABEL);
 150   source->AddLocalizedString("rangeAllTime", IDS_HISTORY_RANGE_ALL_TIME);
 151   source->AddLocalizedString("rangeWeek", IDS_HISTORY_RANGE_WEEK);
 152   source->AddLocalizedString("rangeMonth", IDS_HISTORY_RANGE_MONTH);
 153   source->AddLocalizedString("rangeToday", IDS_HISTORY_RANGE_TODAY);
 154   source->AddLocalizedString("rangeNext", IDS_HISTORY_RANGE_NEXT);
 155   source->AddLocalizedString("rangePrevious", IDS_HISTORY_RANGE_PREVIOUS);
 156   source->AddLocalizedString("numberVisits", IDS_HISTORY_NUMBER_VISITS);
 157   source->AddLocalizedString("filterAllowed", IDS_HISTORY_FILTER_ALLOWED);
 158   source->AddLocalizedString("filterBlocked", IDS_HISTORY_FILTER_BLOCKED);
 159   source->AddLocalizedString("inContentPack", IDS_HISTORY_IN_CONTENT_PACK);
 160   source->AddLocalizedString("allowItems", IDS_HISTORY_FILTER_ALLOW_ITEMS);
 161   source->AddLocalizedString("blockItems", IDS_HISTORY_FILTER_BLOCK_ITEMS);
 162   source->AddLocalizedString("lockButton", IDS_HISTORY_LOCK_BUTTON);
 163   source->AddLocalizedString("blockedVisitText",
 164                              IDS_HISTORY_BLOCKED_VISIT_TEXT);
 165   source->AddLocalizedString("unlockButton", IDS_HISTORY_UNLOCK_BUTTON);
 166   source->AddLocalizedString("hasSyncedResults",
 167                              IDS_HISTORY_HAS_SYNCED_RESULTS);
 168   source->AddLocalizedString("noSyncedResults", IDS_HISTORY_NO_SYNCED_RESULTS);
 169   source->AddLocalizedString("cancel", IDS_CANCEL);
 170   source->AddLocalizedString("deleteConfirm",
 171                              IDS_HISTORY_DELETE_PRIOR_VISITS_CONFIRM_BUTTON);
 172   source->AddBoolean("isFullHistorySyncEnabled",
 173                      WebHistoryServiceFactory::GetForProfile(profile) != NULL);
 174   source->AddBoolean("groupByDomain",
 175       CommandLine::ForCurrentProcess()->HasSwitch(
 176           switches::kHistoryEnableGroupByDomain));
 177   source->AddBoolean("allowDeletingHistory",
 178                      prefs->GetBoolean(prefs::kAllowDeletingBrowserHistory));
 179   source->AddBoolean("isInstantExtendedApiEnabled",
 180                      chrome::IsInstantExtendedAPIEnabled());
 181
 182   source->SetJsonPath(kStringsJsFile);
 183   source->AddResourcePath(kHistoryJsFile, IDR_HISTORY_JS);
 184   source->AddResourcePath(kOtherDevicesJsFile, IDR_OTHER_DEVICES_JS);
 185   source->SetDefaultResource(IDR_HISTORY_HTML);
 186   source->SetUseJsonJSFormatV2();
 187   source->DisableDenyXFrameOptions();
 188   source->AddBoolean("isManagedProfile", profile->IsManaged());
 189   source->AddBoolean("showDeleteVisitUI", !profile->IsManaged());
 190
 191   return source;
 192 }
 193
 194 // Returns a localized version of |visit_time| including a relative
 195 // indicator (e.g. today, yesterday).
 196 base::string16 getRelativeDateLocalized(const base::Time& visit_time) {
 197   base::Time midnight = base::Time::Now().LocalMidnight();
 198   base::string16 date_str = ui::TimeFormat::RelativeDate(visit_time, &midnight);
 199   if (date_str.empty()) {
 200     date_str = base::TimeFormatFriendlyDate(visit_time);
 201   } else {
 202     date_str = l10n_util::GetStringFUTF16(
 203         IDS_HISTORY_DATE_WITH_RELATIVE_TIME,
 204         date_str,
 205         base::TimeFormatFriendlyDate(visit_time));
 206   }
 207   return date_str;
 208 }
 209
 210
 211 // Sets the correct year when substracting months from a date.
 212 void normalizeMonths(base::Time::Exploded* exploded) {
 213   // Decrease a year at a time until we have a proper date.
 214   while (exploded->month < 1) {
 215     exploded->month += 12;
 216     exploded->year--;
 217   }
 218 }
 219
 220 // Returns true if |entry| represents a local visit that had no corresponding
 221 // visit on the server.
 222 bool IsLocalOnlyResult(const BrowsingHistoryHandler::HistoryEntry& entry) {
 223   return entry.entry_type == BrowsingHistoryHandler::HistoryEntry::LOCAL_ENTRY;
 224 }
 225
 226 // Gets the name and type of a device for the given sync client ID.
 227 // |name| and |type| are out parameters.
 228 void GetDeviceNameAndType(const ProfileSyncService* sync_service,
 229                           const std::string& client_id,
 230                           std::string* name,
 231                           std::string* type) {
 232   if (sync_service && sync_service->sync_initialized()) {
 233     scoped_ptr<browser_sync::DeviceInfo> device_info =
 234         sync_service->GetDeviceInfo(client_id);
 235     if (device_info.get()) {
 236       *name = device_info->client_name();
 237       switch (device_info->device_type()) {
 238         case sync_pb::SyncEnums::TYPE_PHONE:
 239           *type = kDeviceTypePhone;
 240           break;
 241         case sync_pb::SyncEnums::TYPE_TABLET:
 242           *type = kDeviceTypeTablet;
 243           break;
 244         default:
 245           *type = kDeviceTypeLaptop;
 246       }
 247       return;
 248     }
 249   } else {
 250     NOTREACHED() << "Got a remote history entry but no ProfileSyncService.";
 251   }
 252   *name = l10n_util::GetStringUTF8(IDS_HISTORY_UNKNOWN_DEVICE);
 253   *type = kDeviceTypeLaptop;
 254 }
 255
 256 }  // namespace
 257
 258 ////////////////////////////////////////////////////////////////////////////////
 259 //
 260 // BrowsingHistoryHandler
 261 //
 262 ////////////////////////////////////////////////////////////////////////////////
 263
 264 BrowsingHistoryHandler::HistoryEntry::HistoryEntry(
 265     BrowsingHistoryHandler::HistoryEntry::EntryType entry_type,
 266     const GURL& url, const base::string16& title, base::Time time,
 267     const std::string& client_id, bool is_search_result,
 268     const base::string16& snippet, bool blocked_visit,
 269     const std::string& accept_languages) {
 270   this->entry_type = entry_type;
 271   this->url = url;
 272   this->title = title;
 273   this->time = time;
 274   this->client_id = client_id;
 275   all_timestamps.insert(time.ToInternalValue());
 276   this->is_search_result = is_search_result;
 277   this->snippet = snippet;
 278   this->blocked_visit = blocked_visit;
 279   this->accept_languages = accept_languages;
 280 }
 281
 282 BrowsingHistoryHandler::HistoryEntry::HistoryEntry()
 283     : entry_type(EMPTY_ENTRY), is_search_result(false), blocked_visit(false) {
 284 }
 285
 286 BrowsingHistoryHandler::HistoryEntry::~HistoryEntry() {
 287 }
 288
 289 void BrowsingHistoryHandler::HistoryEntry::SetUrlAndTitle(
 290     base::DictionaryValue* result) const {
 291   result->SetString("url", url.spec());
 292
 293   bool using_url_as_the_title = false;
 294   base::string16 title_to_set(title);
 295   if (title.empty()) {
 296     using_url_as_the_title = true;
 297     title_to_set = base::UTF8ToUTF16(url.spec());
 298   }
 299
 300   // Since the title can contain BiDi text, we need to mark the text as either
 301   // RTL or LTR, depending on the characters in the string. If we use the URL
 302   // as the title, we mark the title as LTR since URLs are always treated as
 303   // left to right strings.
 304   if (base::i18n::IsRTL()) {
 305     if (using_url_as_the_title)
 306       base::i18n::WrapStringWithLTRFormatting(&title_to_set);
 307     else
 308       base::i18n::AdjustStringForLocaleDirection(&title_to_set);
 309   }
 310   result->SetString("title", title_to_set);
 311 }
 312
 313 scoped_ptr<base::DictionaryValue> BrowsingHistoryHandler::HistoryEntry::ToValue(
 314     BookmarkModel* bookmark_model,
 315     ManagedUserService* managed_user_service,
 316     const ProfileSyncService* sync_service) const {
 317   scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
 318   SetUrlAndTitle(result.get());
 319
 320   base::string16 domain = net::IDNToUnicode(url.host(), accept_languages);
 321   // When the domain is empty, use the scheme instead. This allows for a
 322   // sensible treatment of e.g. file: URLs when group by domain is on.
 323   if (domain.empty())
 324     domain = base::UTF8ToUTF16(url.scheme() + ":");
 325
 326   result->SetString("domain", domain);
 327   result->SetDouble("time", time.ToJsTime());
 328
 329   // Pass the timestamps in a list.
 330   scoped_ptr<base::ListValue> timestamps(new base::ListValue);
 331   for (std::set<int64>::const_iterator it = all_timestamps.begin();
 332        it != all_timestamps.end(); ++it) {
 333     timestamps->AppendDouble(base::Time::FromInternalValue(*it).ToJsTime());
 334   }
 335   result->Set("allTimestamps", timestamps.release());
 336
 337   // Always pass the short date since it is needed both in the search and in
 338   // the monthly view.
 339   result->SetString("dateShort", base::TimeFormatShortDate(time));
 340
 341   // Only pass in the strings we need (search results need a shortdate
 342   // and snippet, browse results need day and time information).
 343   if (is_search_result) {
 344     result->SetString("snippet", snippet);
 345   } else {
 346     base::Time midnight = base::Time::Now().LocalMidnight();
 347     base::string16 date_str = ui::TimeFormat::RelativeDate(time, &midnight);
 348     if (date_str.empty()) {
 349       date_str = base::TimeFormatFriendlyDate(time);
 350     } else {
 351       date_str = l10n_util::GetStringFUTF16(
 352           IDS_HISTORY_DATE_WITH_RELATIVE_TIME,
 353           date_str,
 354           base::TimeFormatFriendlyDate(time));
 355     }
 356     result->SetString("dateRelativeDay", date_str);
 357     result->SetString("dateTimeOfDay", base::TimeFormatTimeOfDay(time));
 358   }
 359   result->SetBoolean("starred", bookmark_model->IsBookmarked(url));
 360
 361   std::string device_name;
 362   std::string device_type;
 363   if (!client_id.empty())
 364     GetDeviceNameAndType(sync_service, client_id, &device_name, &device_type);
 365   result->SetString("deviceName", device_name);
 366   result->SetString("deviceType", device_type);
 367
 368 #if defined(ENABLE_MANAGED_USERS)
 369   if (managed_user_service) {
 370     const ManagedModeURLFilter* url_filter =
 371         managed_user_service->GetURLFilterForUIThread();
 372     int filtering_behavior =
 373         url_filter->GetFilteringBehaviorForURL(url.GetWithEmptyPath());
 374     result->SetInteger("hostFilteringBehavior", filtering_behavior);
 375
 376     result->SetBoolean("blockedVisit", blocked_visit);
 377   }
 378 #endif
 379
 380   return result.Pass();
 381 }
 382
 383 bool BrowsingHistoryHandler::HistoryEntry::SortByTimeDescending(
 384     const BrowsingHistoryHandler::HistoryEntry& entry1,
 385     const BrowsingHistoryHandler::HistoryEntry& entry2) {
 386   return entry1.time > entry2.time;
 387 }
 388
 389 BrowsingHistoryHandler::BrowsingHistoryHandler()
 390     : has_pending_delete_request_(false),
 391       weak_factory_(this) {
 392 }
 393
 394 BrowsingHistoryHandler::~BrowsingHistoryHandler() {
 395   history_request_consumer_.CancelAllRequests();
 396   web_history_request_.reset();
 397 }
 398
 399 void BrowsingHistoryHandler::RegisterMessages() {
 400   // Create our favicon data source.
 401   Profile* profile = Profile::FromWebUI(web_ui());
 402   content::URLDataSource::Add(
 403       profile, new FaviconSource(profile, FaviconSource::ANY));
 404
 405   // Get notifications when history is cleared.
 406   registrar_.Add(this, chrome::NOTIFICATION_HISTORY_URLS_DELETED,
 407       content::Source<Profile>(profile->GetOriginalProfile()));
 408
 409   web_ui()->RegisterMessageCallback("queryHistory",
 410       base::Bind(&BrowsingHistoryHandler::HandleQueryHistory,
 411                  base::Unretained(this)));
 412   web_ui()->RegisterMessageCallback("removeVisits",
 413       base::Bind(&BrowsingHistoryHandler::HandleRemoveVisits,
 414                  base::Unretained(this)));
 415   web_ui()->RegisterMessageCallback("clearBrowsingData",
 416       base::Bind(&BrowsingHistoryHandler::HandleClearBrowsingData,
 417                  base::Unretained(this)));
 418   web_ui()->RegisterMessageCallback("removeBookmark",
 419       base::Bind(&BrowsingHistoryHandler::HandleRemoveBookmark,
 420                  base::Unretained(this)));
 421 }
 422
 423 bool BrowsingHistoryHandler::ExtractIntegerValueAtIndex(
 424     const base::ListValue* value,
 425     int index,
 426     int* out_int) {
 427   double double_value;
 428   if (value->GetDouble(index, &double_value)) {
 429     *out_int = static_cast<int>(double_value);
 430     return true;
 431   }
 432   NOTREACHED();
 433   return false;
 434 }
 435
 436 void BrowsingHistoryHandler::WebHistoryTimeout() {
 437   // TODO(dubroy): Communicate the failure to the front end.
 438   if (!history_request_consumer_.HasPendingRequests())
 439     ReturnResultsToFrontEnd();
 440
 441   UMA_HISTOGRAM_ENUMERATION(
 442       "WebHistory.QueryCompletion",
 443       WEB_HISTORY_QUERY_TIMED_OUT, NUM_WEB_HISTORY_QUERY_BUCKETS);
 444 }
 445
 446 void BrowsingHistoryHandler::QueryHistory(
 447     base::string16 search_text, const history::QueryOptions& options) {
 448   Profile* profile = Profile::FromWebUI(web_ui());
 449
 450   // Anything in-flight is invalid.
 451   history_request_consumer_.CancelAllRequests();
 452   web_history_request_.reset();
 453
 454   query_results_.clear();
 455   results_info_value_.Clear();
 456
 457   HistoryService* hs = HistoryServiceFactory::GetForProfile(
 458       profile, Profile::EXPLICIT_ACCESS);
 459   hs->QueryHistory(search_text,
 460       options,
 461       &history_request_consumer_,
 462       base::Bind(&BrowsingHistoryHandler::QueryComplete,
 463                  base::Unretained(this), search_text, options));
 464
 465   history::WebHistoryService* web_history =
 466       WebHistoryServiceFactory::GetForProfile(profile);
 467   if (web_history) {
 468     web_history_query_results_.clear();
 469     web_history_request_ = web_history->QueryHistory(
 470         search_text,
 471         options,
 472         base::Bind(&BrowsingHistoryHandler::WebHistoryQueryComplete,
 473                    base::Unretained(this),
 474                    search_text, options,
 475                    base::TimeTicks::Now()));
 476     // Start a timer so we know when to give up.
 477     web_history_timer_.Start(
 478         FROM_HERE, base::TimeDelta::FromSeconds(kWebHistoryTimeoutSeconds),
 479         this, &BrowsingHistoryHandler::WebHistoryTimeout);
 480
 481     // Set this to false until the results actually arrive.
 482     results_info_value_.SetBoolean("hasSyncedResults", false);
 483   }
 484 }
 485
 486 void BrowsingHistoryHandler::HandleQueryHistory(const base::ListValue* args) {
 487   history::QueryOptions options;
 488
 489   // Parse the arguments from JavaScript. There are five required arguments:
 490   // - the text to search for (may be empty)
 491   // - the offset from which the search should start (in multiples of week or
 492   //   month, set by the next argument).
 493   // - the range (BrowsingHistoryHandler::Range) Enum value that sets the range
 494   //   of the query.
 495   // - the end time for the query. Only results older than this time will be
 496   //   returned.
 497   // - the maximum number of results to return (may be 0, meaning that there
 498   //   is no maximum).
 499   base::string16 search_text = ExtractStringValue(args);
 500   int offset;
 501   if (!args->GetInteger(1, &offset)) {
 502     NOTREACHED() << "Failed to convert argument 1. ";
 503     return;
 504   }
 505   int range;
 506   if (!args->GetInteger(2, &range)) {
 507     NOTREACHED() << "Failed to convert argument 2. ";
 508     return;
 509   }
 510
 511   if (range == BrowsingHistoryHandler::MONTH)
 512     SetQueryTimeInMonths(offset, &options);
 513   else if (range == BrowsingHistoryHandler::WEEK)
 514     SetQueryTimeInWeeks(offset, &options);
 515
 516   double end_time;
 517   if (!args->GetDouble(3, &end_time)) {
 518     NOTREACHED() << "Failed to convert argument 3. ";
 519     return;
 520   }
 521   if (end_time)
 522     options.end_time = base::Time::FromJsTime(end_time);
 523
 524   if (!ExtractIntegerValueAtIndex(args, 4, &options.max_count)) {
 525     NOTREACHED() << "Failed to convert argument 4.";
 526     return;
 527   }
 528
 529   options.duplicate_policy = history::QueryOptions::REMOVE_DUPLICATES_PER_DAY;
 530   QueryHistory(search_text, options);
 531 }
 532
 533 void BrowsingHistoryHandler::HandleRemoveVisits(const base::ListValue* args) {
 534   Profile* profile = Profile::FromWebUI(web_ui());
 535   // TODO(davidben): history.js is not aware of this failure and will still
 536   // override |deleteCompleteCallback_|.
 537   if (delete_task_tracker_.HasTrackedTasks() ||
 538       has_pending_delete_request_ ||
 539       !profile->GetPrefs()->GetBoolean(prefs::kAllowDeletingBrowserHistory)) {
 540     web_ui()->CallJavascriptFunction("deleteFailed");
 541     return;
 542   }
 543
 544   HistoryService* history_service =
 545       HistoryServiceFactory::GetForProfile(profile, Profile::EXPLICIT_ACCESS);
 546   history::WebHistoryService* web_history =
 547       WebHistoryServiceFactory::GetForProfile(profile);
 548
 549   base::Time now = base::Time::Now();
 550   std::vector<history::ExpireHistoryArgs> expire_list;
 551   expire_list.reserve(args->GetSize());
 552
 553   DCHECK(urls_to_be_deleted_.empty());
 554   for (base::ListValue::const_iterator it = args->begin();
 555        it != args->end(); ++it) {
 556     base::DictionaryValue* deletion = NULL;
 557     base::string16 url;
 558     base::ListValue* timestamps = NULL;
 559
 560     // Each argument is a dictionary with properties "url" and "timestamps".
 561     if (!((*it)->GetAsDictionary(&deletion) &&
 562         deletion->GetString("url", &url) &&
 563         deletion->GetList("timestamps", &timestamps))) {
 564       NOTREACHED() << "Unable to extract arguments";
 565       return;
 566     }
 567     DCHECK(timestamps->GetSize() > 0);
 568
 569     // In order to ensure that visits will be deleted from the server and other
 570     // clients (even if they are offline), create a sync delete directive for
 571     // each visit to be deleted.
 572     sync_pb::HistoryDeleteDirectiveSpecifics delete_directive;
 573     sync_pb::GlobalIdDirective* global_id_directive =
 574         delete_directive.mutable_global_id_directive();
 575
 576     double timestamp;
 577     history::ExpireHistoryArgs* expire_args = NULL;
 578     for (base::ListValue::const_iterator ts_iterator = timestamps->begin();
 579          ts_iterator != timestamps->end(); ++ts_iterator) {
 580       if (!(*ts_iterator)->GetAsDouble(&timestamp)) {
 581         NOTREACHED() << "Unable to extract visit timestamp.";
 582         continue;
 583       }
 584       base::Time visit_time = base::Time::FromJsTime(timestamp);
 585       if (!expire_args) {
 586         GURL gurl(url);
 587         expire_list.resize(expire_list.size() + 1);
 588         expire_args = &expire_list.back();
 589         expire_args->SetTimeRangeForOneDay(visit_time);
 590         expire_args->urls.insert(gurl);
 591         urls_to_be_deleted_.insert(gurl);
 592       }
 593       // The local visit time is treated as a global ID for the visit.
 594       global_id_directive->add_global_id(visit_time.ToInternalValue());
 595     }
 596
 597     // Set the start and end time in microseconds since the Unix epoch.
 598     global_id_directive->set_start_time_usec(
 599         (expire_args->begin_time - base::Time::UnixEpoch()).InMicroseconds());
 600
 601     // Delete directives shouldn't have an end time in the future.
 602     // TODO(dubroy): Use sane time (crbug.com/146090) here when it's ready.
 603     base::Time end_time = std::min(expire_args->end_time, now);
 604
 605     // -1 because end time in delete directives is inclusive.
 606     global_id_directive->set_end_time_usec(
 607         (end_time - base::Time::UnixEpoch()).InMicroseconds() - 1);
 608
 609     // TODO(dubroy): Figure out the proper way to handle an error here.
 610     if (web_history)
 611       history_service->ProcessLocalDeleteDirective(delete_directive);
 612   }
 613
 614   history_service->ExpireHistory(
 615       expire_list,
 616       base::Bind(&BrowsingHistoryHandler::RemoveComplete,
 617                  base::Unretained(this)),
 618       &delete_task_tracker_);
 619
 620   if (web_history) {
 621     has_pending_delete_request_ = true;
 622     web_history->ExpireHistory(
 623         expire_list,
 624         base::Bind(&BrowsingHistoryHandler::RemoveWebHistoryComplete,
 625                    weak_factory_.GetWeakPtr()));
 626   }
 627
 628 #if defined(ENABLE_EXTENSIONS)
 629   // If the profile has activity logging enabled also clean up any URLs from
 630   // the extension activity log. The extension activity log contains URLS
 631   // which websites an extension has activity on so it will indirectly
 632   // contain websites that a user has visited.
 633   extensions::ActivityLog* activity_log =
 634       extensions::ActivityLog::GetInstance(profile);
 635   for (std::vector<history::ExpireHistoryArgs>::const_iterator it =
 636        expire_list.begin(); it != expire_list.end(); ++it) {
 637     activity_log->RemoveURLs(it->urls);
 638   }
 639 #endif
 640 }
 641
 642 void BrowsingHistoryHandler::HandleClearBrowsingData(
 643     const base::ListValue* args) {
 644 #if defined(OS_ANDROID)
 645   const TabModel* tab_model = TabModelList::GetTabModelForWebContents(
 646       web_ui()->GetWebContents());
 647   if (tab_model)
 648     tab_model->OpenClearBrowsingData();
 649 #else
 650   // TODO(beng): This is an improper direct dependency on Browser. Route this
 651   // through some sort of delegate.
 652   Browser* browser = chrome::FindBrowserWithWebContents(
 653       web_ui()->GetWebContents());
 654   chrome::ShowClearBrowsingDataDialog(browser);
 655 #endif
 656 }
 657
 658 void BrowsingHistoryHandler::HandleRemoveBookmark(const base::ListValue* args) {
 659   base::string16 url = ExtractStringValue(args);
 660   Profile* profile = Profile::FromWebUI(web_ui());
 661   BookmarkModel* model = BookmarkModelFactory::GetForProfile(profile);
 662   bookmark_utils::RemoveAllBookmarks(model, GURL(url));
 663 }
 664
 665 // static
 666 void BrowsingHistoryHandler::MergeDuplicateResults(
 667     std::vector<BrowsingHistoryHandler::HistoryEntry>* results) {
 668   std::vector<BrowsingHistoryHandler::HistoryEntry> new_results;
 669   // Pre-reserve the size of the new vector. Since we're working with pointers
 670   // later on not doing this could lead to the vector being resized and to
 671   // pointers to invalid locations.
 672   new_results.reserve(results->size());
 673   // Maps a URL to the most recent entry on a particular day.
 674   std::map<GURL,BrowsingHistoryHandler::HistoryEntry*>
 675       current_day_entries;
 676
 677   // Keeps track of the day that |current_day_urls| is holding the URLs for,
 678   // in order to handle removing per-day duplicates.
 679   base::Time current_day_midnight;
 680
 681   std::sort(
 682       results->begin(), results->end(), HistoryEntry::SortByTimeDescending);
 683
 684   for (std::vector<BrowsingHistoryHandler::HistoryEntry>::const_iterator it =
 685            results->begin(); it != results->end(); ++it) {
 686     // Reset the list of found URLs when a visit from a new day is encountered.
 687     if (current_day_midnight != it->time.LocalMidnight()) {
 688       current_day_entries.clear();
 689       current_day_midnight = it->time.LocalMidnight();
 690     }
 691
 692     // Keep this visit if it's the first visit to this URL on the current day.
 693     if (current_day_entries.count(it->url) == 0) {
 694       new_results.push_back(*it);
 695       current_day_entries[it->url] = &new_results.back();
 696     } else {
 697       // Keep track of the timestamps of all visits to the URL on the same day.
 698       BrowsingHistoryHandler::HistoryEntry* entry =
 699           current_day_entries[it->url];
 700       entry->all_timestamps.insert(
 701           it->all_timestamps.begin(), it->all_timestamps.end());
 702
 703       if (entry->entry_type != it->entry_type) {
 704         entry->entry_type =
 705             BrowsingHistoryHandler::HistoryEntry::COMBINED_ENTRY;
 706       }
 707     }
 708   }
 709   results->swap(new_results);
 710 }
 711
 712 void BrowsingHistoryHandler::ReturnResultsToFrontEnd() {
 713   Profile* profile = Profile::FromWebUI(web_ui());
 714   BookmarkModel* bookmark_model = BookmarkModelFactory::GetForProfile(profile);
 715   ManagedUserService* managed_user_service = NULL;
 716 #if defined(ENABLE_MANAGED_USERS)
 717   if (profile->IsManaged())
 718     managed_user_service = ManagedUserServiceFactory::GetForProfile(profile);
 719 #endif
 720   ProfileSyncService* sync_service =
 721       ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile);
 722
 723   // Combine the local and remote results into |query_results_|, and remove
 724   // any duplicates.
 725   if (!web_history_query_results_.empty()) {
 726     int local_result_count = query_results_.size();
 727     query_results_.insert(query_results_.end(),
 728                           web_history_query_results_.begin(),
 729                           web_history_query_results_.end());
 730     MergeDuplicateResults(&query_results_);
 731
 732     if (local_result_count) {
 733       // In the best case, we expect that all local results are duplicated on
 734       // the server. Keep track of how many are missing.
 735       int missing_count = std::count_if(
 736           query_results_.begin(), query_results_.end(), IsLocalOnlyResult);
 737       UMA_HISTOGRAM_PERCENTAGE("WebHistory.LocalResultMissingOnServer",
 738                                missing_count * 100.0 / local_result_count);
 739     }
 740   }
 741
 742   // Convert the result vector into a ListValue.
 743   base::ListValue results_value;
 744   for (std::vector<BrowsingHistoryHandler::HistoryEntry>::iterator it =
 745            query_results_.begin(); it != query_results_.end(); ++it) {
 746     scoped_ptr<base::Value> value(
 747         it->ToValue(bookmark_model, managed_user_service, sync_service));
 748     results_value.Append(value.release());
 749   }
 750
 751   web_ui()->CallJavascriptFunction(
 752       "historyResult", results_info_value_, results_value);
 753   results_info_value_.Clear();
 754   query_results_.clear();
 755   web_history_query_results_.clear();
 756 }
 757
 758 void BrowsingHistoryHandler::QueryComplete(
 759     const base::string16& search_text,
 760     const history::QueryOptions& options,
 761     HistoryService::Handle request_handle,
 762     history::QueryResults* results) {
 763   DCHECK_EQ(0U, query_results_.size());
 764   query_results_.reserve(results->size());
 765   const std::string accept_languages = GetAcceptLanguages();
 766
 767   for (size_t i = 0; i < results->size(); ++i) {
 768     history::URLResult const &page = (*results)[i];
 769     // TODO(dubroy): Use sane time (crbug.com/146090) here when it's ready.
 770     query_results_.push_back(
 771         HistoryEntry(
 772             HistoryEntry::LOCAL_ENTRY,
 773             page.url(),
 774             page.title(),
 775             page.visit_time(),
 776             std::string(),
 777             !search_text.empty(),
 778             page.snippet().text(),
 779             page.blocked_visit(),
 780             accept_languages));
 781   }
 782
 783   results_info_value_.SetString("term", search_text);
 784   results_info_value_.SetBoolean("finished", results->reached_beginning());
 785
 786   // Add the specific dates that were searched to display them.
 787   // TODO(sergiu): Put today if the start is in the future.
 788   results_info_value_.SetString("queryStartTime",
 789                                 getRelativeDateLocalized(options.begin_time));
 790   if (!options.end_time.is_null()) {
 791     results_info_value_.SetString("queryEndTime",
 792         getRelativeDateLocalized(options.end_time -
 793                                  base::TimeDelta::FromDays(1)));
 794   } else {
 795     results_info_value_.SetString("queryEndTime",
 796         getRelativeDateLocalized(base::Time::Now()));
 797   }
 798   if (!web_history_timer_.IsRunning())
 799     ReturnResultsToFrontEnd();
 800 }
 801
 802 void BrowsingHistoryHandler::WebHistoryQueryComplete(
 803     const base::string16& search_text,
 804     const history::QueryOptions& options,
 805     base::TimeTicks start_time,
 806     history::WebHistoryService::Request* request,
 807     const base::DictionaryValue* results_value) {
 808   base::TimeDelta delta = base::TimeTicks::Now() - start_time;
 809   UMA_HISTOGRAM_TIMES("WebHistory.ResponseTime", delta);
 810   const std::string accept_languages = GetAcceptLanguages();
 811
 812   // If the response came in too late, do nothing.
 813   // TODO(dubroy): Maybe show a banner, and prompt the user to reload?
 814   if (!web_history_timer_.IsRunning())
 815     return;
 816   web_history_timer_.Stop();
 817
 818   UMA_HISTOGRAM_ENUMERATION(
 819       "WebHistory.QueryCompletion",
 820       results_value ? WEB_HISTORY_QUERY_SUCCEEDED : WEB_HISTORY_QUERY_FAILED,
 821       NUM_WEB_HISTORY_QUERY_BUCKETS);
 822
 823   DCHECK_EQ(0U, web_history_query_results_.size());
 824   const base::ListValue* events = NULL;
 825   if (results_value && results_value->GetList("event", &events)) {
 826     web_history_query_results_.reserve(events->GetSize());
 827     for (unsigned int i = 0; i < events->GetSize(); ++i) {
 828       const base::DictionaryValue* event = NULL;
 829       const base::DictionaryValue* result = NULL;
 830       const base::ListValue* results = NULL;
 831       const base::ListValue* ids = NULL;
 832       base::string16 url;
 833       base::string16 title;
 834       base::Time visit_time;
 835
 836       if (!(events->GetDictionary(i, &event) &&
 837           event->GetList("result", &results) &&
 838           results->GetDictionary(0, &result) &&
 839           result->GetString("url", &url) &&
 840           result->GetList("id", &ids) &&
 841           ids->GetSize() > 0)) {
 842         LOG(WARNING) << "Improperly formed JSON response from history server.";
 843         continue;
 844       }
 845       // Title is optional, so the return value is ignored here.
 846       result->GetString("title", &title);
 847
 848       // Extract the timestamps of all the visits to this URL.
 849       // They are referred to as "IDs" by the server.
 850       for (int j = 0; j < static_cast<int>(ids->GetSize()); ++j) {
 851         const base::DictionaryValue* id = NULL;
 852         std::string timestamp_string;
 853         int64 timestamp_usec;
 854
 855         if (!(ids->GetDictionary(j, &id) &&
 856             id->GetString("timestamp_usec", &timestamp_string) &&
 857               base::StringToInt64(timestamp_string, &timestamp_usec))) {
 858           NOTREACHED() << "Unable to extract timestamp.";
 859           continue;
 860         }
 861         // The timestamp on the server is a Unix time.
 862         base::Time time = base::Time::UnixEpoch() +
 863                           base::TimeDelta::FromMicroseconds(timestamp_usec);
 864
 865         // Get the ID of the client that this visit came from.
 866         std::string client_id;
 867         id->GetString("client_id", &client_id);
 868
 869         web_history_query_results_.push_back(
 870             HistoryEntry(
 871                 HistoryEntry::REMOTE_ENTRY,
 872                 GURL(url),
 873                 title,
 874                 time,
 875                 client_id,
 876                 !search_text.empty(),
 877                 base::string16(),
 878                 /* blocked_visit */ false,
 879                 accept_languages));
 880       }
 881     }
 882   } else if (results_value) {
 883     NOTREACHED() << "Failed to parse JSON response.";
 884   }
 885   results_info_value_.SetBoolean("hasSyncedResults", results_value != NULL);
 886   if (!history_request_consumer_.HasPendingRequests())
 887     ReturnResultsToFrontEnd();
 888 }
 889
 890 void BrowsingHistoryHandler::RemoveComplete() {
 891   urls_to_be_deleted_.clear();
 892
 893   // Notify the page that the deletion request is complete, but only if a web
 894   // history delete request is not still pending.
 895   if (!has_pending_delete_request_)
 896     web_ui()->CallJavascriptFunction("deleteComplete");
 897 }
 898
 899 void BrowsingHistoryHandler::RemoveWebHistoryComplete(bool success) {
 900   has_pending_delete_request_ = false;
 901   // TODO(dubroy): Should we handle failure somehow? Delete directives will
 902   // ensure that the visits are eventually deleted, so maybe it's not necessary.
 903   if (!delete_task_tracker_.HasTrackedTasks())
 904     RemoveComplete();
 905 }
 906
 907 void BrowsingHistoryHandler::SetQueryTimeInWeeks(
 908     int offset, history::QueryOptions* options) {
 909   // LocalMidnight returns the beginning of the current day so get the
 910   // beginning of the next one.
 911   base::Time midnight = base::Time::Now().LocalMidnight() +
 912                               base::TimeDelta::FromDays(1);
 913   options->end_time = midnight -
 914       base::TimeDelta::FromDays(7 * offset);
 915   options->begin_time = midnight -
 916       base::TimeDelta::FromDays(7 * (offset + 1));
 917 }
 918
 919 void BrowsingHistoryHandler::SetQueryTimeInMonths(
 920     int offset, history::QueryOptions* options) {
 921   // Configure the begin point of the search to the start of the
 922   // current month.
 923   base::Time::Exploded exploded;
 924   base::Time::Now().LocalMidnight().LocalExplode(&exploded);
 925   exploded.day_of_month = 1;
 926
 927   if (offset == 0) {
 928     options->begin_time = base::Time::FromLocalExploded(exploded);
 929
 930     // Set the end time of this first search to null (which will
 931     // show results from the future, should the user's clock have
 932     // been set incorrectly).
 933     options->end_time = base::Time();
 934   } else {
 935     // Go back |offset| months in the past. The end time is not inclusive, so
 936     // use the first day of the |offset| - 1 and |offset| months (e.g. for
 937     // the last month, |offset| = 1, use the first days of the last month and
 938     // the current month.
 939     exploded.month -= offset - 1;
 940     // Set the correct year.
 941     normalizeMonths(&exploded);
 942     options->end_time = base::Time::FromLocalExploded(exploded);
 943
 944     exploded.month -= 1;
 945     // Set the correct year
 946     normalizeMonths(&exploded);
 947     options->begin_time = base::Time::FromLocalExploded(exploded);
 948   }
 949 }
 950
 951 // Helper function for Observe that determines if there are any differences
 952 // between the URLs noticed for deletion and the ones we are expecting.
 953 static bool DeletionsDiffer(const history::URLRows& deleted_rows,
 954                             const std::set<GURL>& urls_to_be_deleted) {
 955   if (deleted_rows.size() != urls_to_be_deleted.size())
 956     return true;
 957   for (history::URLRows::const_iterator i = deleted_rows.begin();
 958        i != deleted_rows.end(); ++i) {
 959     if (urls_to_be_deleted.find(i->url()) == urls_to_be_deleted.end())
 960       return true;
 961   }
 962   return false;
 963 }
 964
 965 void BrowsingHistoryHandler::Observe(
 966     int type,
 967     const content::NotificationSource& source,
 968     const content::NotificationDetails& details) {
 969   if (type != chrome::NOTIFICATION_HISTORY_URLS_DELETED) {
 970     NOTREACHED();
 971     return;
 972   }
 973   history::URLsDeletedDetails* deletedDetails =
 974       content::Details<history::URLsDeletedDetails>(details).ptr();
 975   if (deletedDetails->all_history ||
 976       DeletionsDiffer(deletedDetails->rows, urls_to_be_deleted_))
 977     web_ui()->CallJavascriptFunction("historyDeleted");
 978 }
 979
 980 std::string BrowsingHistoryHandler::GetAcceptLanguages() const {
 981   Profile* profile = Profile::FromWebUI(web_ui());
 982   return profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
 983 }
 984
 985 ////////////////////////////////////////////////////////////////////////////////
 986 //
 987 // HistoryUI
 988 //
 989 ////////////////////////////////////////////////////////////////////////////////
 990
 991 HistoryUI::HistoryUI(content::WebUI* web_ui) : WebUIController(web_ui) {
 992   web_ui->AddMessageHandler(new BrowsingHistoryHandler());
 993   web_ui->AddMessageHandler(new MetricsHandler());
 994
 995 // On mobile we deal with foreign sessions differently.
 996 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 997   if (chrome::IsInstantExtendedAPIEnabled()) {
 998     web_ui->AddMessageHandler(new browser_sync::ForeignSessionHandler());
 999     web_ui->AddMessageHandler(new NTPLoginHandler());
1000   }
1001 #endif
1002
1003   // Set up the chrome://history-frame/ source.
1004   Profile* profile = Profile::FromWebUI(web_ui);
1005   content::WebUIDataSource::Add(profile, CreateHistoryUIHTMLSource(profile));
1006 }
1007
1008 // static
1009 const GURL HistoryUI::GetHistoryURLWithSearchText(const base::string16& text) {
1010   return GURL(std::string(chrome::kChromeUIHistoryURL) + "#q=" +
1011               net::EscapeQueryParamValue(base::UTF16ToUTF8(text), true));
1012 }
1013
1014 // static
1015 base::RefCountedMemory* HistoryUI::GetFaviconResourceBytes(
1016       ui::ScaleFactor scale_factor) {
1017   return ResourceBundle::GetSharedInstance().
1018       LoadDataResourceBytesForScale(IDR_HISTORY_FAVICON, scale_factor);
1019 }