chrome/browser/jumplist_win.cc

   1 // Copyright 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/jumplist_win.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/command_line.h"
  10 #include "base/files/file_util.h"
  11 #include "base/path_service.h"
  12 #include "base/prefs/pref_change_registrar.h"
  13 #include "base/strings/string_util.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "base/threading/thread.h"
  16 #include "chrome/browser/chrome_notification_types.h"
  17 #include "chrome/browser/favicon/favicon_service_factory.h"
  18 #include "chrome/browser/history/top_sites_factory.h"
  19 #include "chrome/browser/metrics/jumplist_metrics_win.h"
  20 #include "chrome/browser/profiles/profile.h"
  21 #include "chrome/browser/sessions/tab_restore_service.h"
  22 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  23 #include "chrome/browser/shell_integration.h"
  24 #include "chrome/common/chrome_constants.h"
  25 #include "chrome/common/chrome_switches.h"
  26 #include "chrome/common/pref_names.h"
  27 #include "chrome/common/url_constants.h"
  28 #include "chrome/grit/generated_resources.h"
  29 #include "components/favicon/core/favicon_service.h"
  30 #include "components/favicon_base/favicon_types.h"
  31 #include "components/history/core/browser/history_service.h"
  32 #include "components/history/core/browser/page_usage_data.h"
  33 #include "components/history/core/browser/top_sites.h"
  34 #include "components/sessions/session_types.h"
  35 #include "content/public/browser/browser_thread.h"
  36 #include "content/public/browser/notification_registrar.h"
  37 #include "content/public/browser/notification_source.h"
  38 #include "ui/base/l10n/l10n_util.h"
  39 #include "ui/gfx/codec/png_codec.h"
  40 #include "ui/gfx/favicon_size.h"
  41 #include "ui/gfx/icon_util.h"
  42 #include "ui/gfx/image/image_family.h"
  43 #include "url/gurl.h"
  44
  45 using content::BrowserThread;
  46
  47 namespace {
  48
  49 // Append the common switches to each shell link.
  50 void AppendCommonSwitches(ShellLinkItem* shell_link) {
  51   const char* kSwitchNames[] = { switches::kUserDataDir };
  52   const base::CommandLine& command_line =
  53       *base::CommandLine::ForCurrentProcess();
  54   shell_link->GetCommandLine()->CopySwitchesFrom(command_line,
  55                                                  kSwitchNames,
  56                                                  arraysize(kSwitchNames));
  57 }
  58
  59 // Create a ShellLinkItem preloaded with common switches.
  60 scoped_refptr<ShellLinkItem> CreateShellLink() {
  61   scoped_refptr<ShellLinkItem> link(new ShellLinkItem);
  62   AppendCommonSwitches(link.get());
  63   return link;
  64 }
  65
  66 // Creates a temporary icon file to be shown in JumpList.
  67 bool CreateIconFile(const SkBitmap& bitmap,
  68                     const base::FilePath& icon_dir,
  69                     base::FilePath* icon_path) {
  70   // Retrieve the path to a temporary file.
  71   // We don't have to care about the extension of this temporary file because
  72   // JumpList does not care about it.
  73   base::FilePath path;
  74   if (!base::CreateTemporaryFileInDir(icon_dir, &path))
  75     return false;
  76
  77   // Create an icon file from the favicon attached to the given |page|, and
  78   // save it as the temporary file.
  79   gfx::ImageFamily image_family;
  80   image_family.Add(gfx::Image::CreateFrom1xBitmap(bitmap));
  81   if (!IconUtil::CreateIconFileFromImageFamily(image_family, path))
  82     return false;
  83
  84   // Add this icon file to the list and return its absolute path.
  85   // The IShellLink::SetIcon() function needs the absolute path to an icon.
  86   *icon_path = path;
  87   return true;
  88 }
  89
  90 // Updates the "Tasks" category of the JumpList.
  91 bool UpdateTaskCategory(
  92     JumpListUpdater* jumplist_updater,
  93     IncognitoModePrefs::Availability incognito_availability) {
  94   base::FilePath chrome_path;
  95   if (!PathService::Get(base::FILE_EXE, &chrome_path))
  96     return false;
  97
  98   ShellLinkItemList items;
  99
 100   // Create an IShellLink object which launches Chrome, and add it to the
 101   // collection. We use our application icon as the icon for this item.
 102   // We remove '&' characters from this string so we can share it with our
 103   // system menu.
 104   if (incognito_availability != IncognitoModePrefs::FORCED) {
 105     scoped_refptr<ShellLinkItem> chrome = CreateShellLink();
 106     base::string16 chrome_title = l10n_util::GetStringUTF16(IDS_NEW_WINDOW);
 107     ReplaceSubstringsAfterOffset(&chrome_title, 0, L"&", L"");
 108     chrome->set_title(chrome_title);
 109     chrome->set_icon(chrome_path.value(), 0);
 110     items.push_back(chrome);
 111   }
 112
 113   // Create an IShellLink object which launches Chrome in incognito mode, and
 114   // add it to the collection. We use our application icon as the icon for
 115   // this item.
 116   if (incognito_availability != IncognitoModePrefs::DISABLED) {
 117     scoped_refptr<ShellLinkItem> incognito = CreateShellLink();
 118     incognito->GetCommandLine()->AppendSwitch(switches::kIncognito);
 119     base::string16 incognito_title =
 120         l10n_util::GetStringUTF16(IDS_NEW_INCOGNITO_WINDOW);
 121     ReplaceSubstringsAfterOffset(&incognito_title, 0, L"&", L"");
 122     incognito->set_title(incognito_title);
 123     incognito->set_icon(chrome_path.value(), 0);
 124     items.push_back(incognito);
 125   }
 126
 127   return jumplist_updater->AddTasks(items);
 128 }
 129
 130 // Updates the application JumpList.
 131 bool UpdateJumpList(const wchar_t* app_id,
 132                     const ShellLinkItemList& most_visited_pages,
 133                     const ShellLinkItemList& recently_closed_pages,
 134                     IncognitoModePrefs::Availability incognito_availability) {
 135   // JumpList is implemented only on Windows 7 or later.
 136   // So, we should return now when this function is called on earlier versions
 137   // of Windows.
 138   if (!JumpListUpdater::IsEnabled())
 139     return true;
 140
 141   JumpListUpdater jumplist_updater(app_id);
 142   if (!jumplist_updater.BeginUpdate())
 143     return false;
 144
 145   // We allocate 60% of the given JumpList slots to "most-visited" items
 146   // and 40% to "recently-closed" items, respectively.
 147   // Nevertheless, if there are not so many items in |recently_closed_pages|,
 148   // we give the remaining slots to "most-visited" items.
 149   const int kMostVisited = 60;
 150   const int kRecentlyClosed = 40;
 151   const int kTotal = kMostVisited + kRecentlyClosed;
 152   size_t most_visited_items =
 153       MulDiv(jumplist_updater.user_max_items(), kMostVisited, kTotal);
 154   size_t recently_closed_items =
 155       jumplist_updater.user_max_items() - most_visited_items;
 156   if (recently_closed_pages.size() < recently_closed_items) {
 157     most_visited_items += recently_closed_items - recently_closed_pages.size();
 158     recently_closed_items = recently_closed_pages.size();
 159   }
 160
 161   // Update the "Most Visited" category of the JumpList if it exists.
 162   // This update request is applied into the JumpList when we commit this
 163   // transaction.
 164   if (!jumplist_updater.AddCustomCategory(
 165           l10n_util::GetStringUTF16(IDS_NEW_TAB_MOST_VISITED),
 166           most_visited_pages, most_visited_items)) {
 167     return false;
 168   }
 169
 170   // Update the "Recently Closed" category of the JumpList.
 171   if (!jumplist_updater.AddCustomCategory(
 172           l10n_util::GetStringUTF16(IDS_RECENTLY_CLOSED),
 173           recently_closed_pages, recently_closed_items)) {
 174     return false;
 175   }
 176
 177   // Update the "Tasks" category of the JumpList.
 178   if (!UpdateTaskCategory(&jumplist_updater, incognito_availability))
 179     return false;
 180
 181   // Commit this transaction and send the updated JumpList to Windows.
 182   if (!jumplist_updater.CommitUpdate())
 183     return false;
 184
 185   return true;
 186 }
 187
 188 }  // namespace
 189
 190 JumpList::JumpList(Profile* profile)
 191     : profile_(profile),
 192       task_id_(base::CancelableTaskTracker::kBadTaskId),
 193       weak_ptr_factory_(this) {
 194   DCHECK(Enabled());
 195   // To update JumpList when a tab is added or removed, we add this object to
 196   // the observer list of the TabRestoreService class.
 197   // When we add this object to the observer list, we save the pointer to this
 198   // TabRestoreService object. This pointer is used when we remove this object
 199   // from the observer list.
 200   TabRestoreService* tab_restore_service =
 201       TabRestoreServiceFactory::GetForProfile(profile_);
 202   if (!tab_restore_service)
 203     return;
 204
 205   app_id_ = ShellIntegration::GetChromiumModelIdForProfile(profile_->GetPath());
 206   icon_dir_ = profile_->GetPath().Append(chrome::kJumpListIconDirname);
 207
 208   scoped_refptr<history::TopSites> top_sites =
 209       TopSitesFactory::GetForProfile(profile_);
 210   if (top_sites) {
 211     // TopSites updates itself after a delay. This is especially noticable when
 212     // your profile is empty. Ask TopSites to update itself when jumplist is
 213     // initialized.
 214     top_sites->SyncWithHistory();
 215     registrar_.reset(new content::NotificationRegistrar);
 216     // Register as TopSitesObserver so that we can update ourselves when the
 217     // TopSites changes.
 218     top_sites->AddObserver(this);
 219     // Register for notification when profile is destroyed to ensure that all
 220     // observers are detatched at that time.
 221     registrar_->Add(this, chrome::NOTIFICATION_PROFILE_DESTROYED,
 222                     content::Source<Profile>(profile_));
 223   }
 224   tab_restore_service->AddObserver(this);
 225   pref_change_registrar_.reset(new PrefChangeRegistrar);
 226   pref_change_registrar_->Init(profile_->GetPrefs());
 227   pref_change_registrar_->Add(
 228       prefs::kIncognitoModeAvailability,
 229       base::Bind(&JumpList::OnIncognitoAvailabilityChanged, this));
 230 }
 231
 232 JumpList::~JumpList() {
 233   Terminate();
 234 }
 235
 236 // static
 237 bool JumpList::Enabled() {
 238   return JumpListUpdater::IsEnabled();
 239 }
 240
 241 void JumpList::Observe(int type,
 242                        const content::NotificationSource& source,
 243                        const content::NotificationDetails& details) {
 244   DCHECK_EQ(type, chrome::NOTIFICATION_PROFILE_DESTROYED);
 245   // Profile was destroyed, do clean-up.
 246   Terminate();
 247 }
 248
 249 void JumpList::CancelPendingUpdate() {
 250   if (task_id_ != base::CancelableTaskTracker::kBadTaskId) {
 251     cancelable_task_tracker_.TryCancel(task_id_);
 252     task_id_ = base::CancelableTaskTracker::kBadTaskId;
 253   }
 254 }
 255
 256 void JumpList::Terminate() {
 257   CancelPendingUpdate();
 258   if (profile_) {
 259     TabRestoreService* tab_restore_service =
 260         TabRestoreServiceFactory::GetForProfile(profile_);
 261     if (tab_restore_service)
 262       tab_restore_service->RemoveObserver(this);
 263     scoped_refptr<history::TopSites> top_sites =
 264         TopSitesFactory::GetForProfile(profile_);
 265     if (top_sites)
 266       top_sites->RemoveObserver(this);
 267     registrar_.reset();
 268     pref_change_registrar_.reset();
 269   }
 270   profile_ = NULL;
 271 }
 272
 273 void JumpList::OnMostVisitedURLsAvailable(
 274     const history::MostVisitedURLList& data) {
 275   // If we have a pending favicon request, cancel it here (it is out of date).
 276   CancelPendingUpdate();
 277
 278   {
 279     base::AutoLock auto_lock(list_lock_);
 280     most_visited_pages_.clear();
 281     for (size_t i = 0; i < data.size(); i++) {
 282       const history::MostVisitedURL& url = data[i];
 283       scoped_refptr<ShellLinkItem> link = CreateShellLink();
 284       std::string url_string = url.url.spec();
 285       std::wstring url_string_wide = base::UTF8ToWide(url_string);
 286       link->GetCommandLine()->AppendArgNative(url_string_wide);
 287       link->GetCommandLine()->AppendSwitchASCII(
 288           switches::kWinJumplistAction, jumplist::kMostVisitedCategory);
 289       link->set_title(!url.title.empty()? url.title : url_string_wide);
 290       most_visited_pages_.push_back(link);
 291       icon_urls_.push_back(make_pair(url_string, link));
 292     }
 293   }
 294
 295   // Send a query that retrieves the first favicon.
 296   StartLoadingFavicon();
 297 }
 298
 299 void JumpList::TabRestoreServiceChanged(TabRestoreService* service) {
 300   // if we have a pending handle request, cancel it here (it is out of date).
 301   CancelPendingUpdate();
 302
 303   // local list to pass to methods
 304   ShellLinkItemList temp_list;
 305
 306   // Create a list of ShellLinkItems from the "Recently Closed" pages.
 307   // As noted above, we create a ShellLinkItem objects with the following
 308   // parameters.
 309   // * arguments
 310   //   The last URL of the tab object.
 311   // * title
 312   //   The title of the last URL.
 313   // * icon
 314   //   An empty string. This value is to be updated in OnFaviconDataAvailable().
 315   // This code is copied from
 316   // RecentlyClosedTabsHandler::TabRestoreServiceChanged() to emulate it.
 317   const int kRecentlyClosedCount = 4;
 318   TabRestoreService* tab_restore_service =
 319       TabRestoreServiceFactory::GetForProfile(profile_);
 320   const TabRestoreService::Entries& entries = tab_restore_service->entries();
 321   for (TabRestoreService::Entries::const_iterator it = entries.begin();
 322        it != entries.end(); ++it) {
 323     const TabRestoreService::Entry* entry = *it;
 324     if (entry->type == TabRestoreService::TAB) {
 325       AddTab(static_cast<const TabRestoreService::Tab*>(entry),
 326              &temp_list, kRecentlyClosedCount);
 327     } else if (entry->type == TabRestoreService::WINDOW) {
 328       AddWindow(static_cast<const TabRestoreService::Window*>(entry),
 329                 &temp_list, kRecentlyClosedCount);
 330     }
 331   }
 332   // Lock recently_closed_pages and copy temp_list into it.
 333   {
 334     base::AutoLock auto_lock(list_lock_);
 335     recently_closed_pages_ = temp_list;
 336   }
 337
 338   // Send a query that retrieves the first favicon.
 339   StartLoadingFavicon();
 340 }
 341
 342 void JumpList::TabRestoreServiceDestroyed(TabRestoreService* service) {
 343 }
 344
 345 bool JumpList::AddTab(const TabRestoreService::Tab* tab,
 346                       ShellLinkItemList* list,
 347                       size_t max_items) {
 348   // This code adds the URL and the title strings of the given tab to the
 349   // specified list.
 350   if (list->size() >= max_items)
 351     return false;
 352
 353   scoped_refptr<ShellLinkItem> link = CreateShellLink();
 354   const sessions::SerializedNavigationEntry& current_navigation =
 355       tab->navigations.at(tab->current_navigation_index);
 356   std::string url = current_navigation.virtual_url().spec();
 357   link->GetCommandLine()->AppendArgNative(base::UTF8ToWide(url));
 358   link->GetCommandLine()->AppendSwitchASCII(
 359       switches::kWinJumplistAction, jumplist::kRecentlyClosedCategory);
 360   link->set_title(current_navigation.title());
 361   list->push_back(link);
 362   icon_urls_.push_back(make_pair(url, link));
 363   return true;
 364 }
 365
 366 void JumpList::AddWindow(const TabRestoreService::Window* window,
 367                          ShellLinkItemList* list,
 368                          size_t max_items) {
 369   // This code enumerates al the tabs in the given window object and add their
 370   // URLs and titles to the list.
 371   DCHECK(!window->tabs.empty());
 372
 373   for (size_t i = 0; i < window->tabs.size(); ++i) {
 374     if (!AddTab(&window->tabs[i], list, max_items))
 375       return;
 376   }
 377 }
 378
 379 void JumpList::StartLoadingFavicon() {
 380   GURL url;
 381   bool waiting_for_icons = true;
 382   {
 383     base::AutoLock auto_lock(list_lock_);
 384     waiting_for_icons = !icon_urls_.empty();
 385     if (waiting_for_icons) {
 386       // Ask FaviconService if it has a favicon of a URL.
 387       // When FaviconService has one, it will call OnFaviconDataAvailable().
 388       url = GURL(icon_urls_.front().first);
 389     }
 390   }
 391
 392   if (!waiting_for_icons) {
 393     // No more favicons are needed by the application JumpList. Schedule a
 394     // RunUpdateOnFileThread call.
 395     PostRunUpdate();
 396     return;
 397   }
 398
 399   favicon::FaviconService* favicon_service =
 400       FaviconServiceFactory::GetForProfile(profile_,
 401                                            ServiceAccessType::EXPLICIT_ACCESS);
 402   task_id_ = favicon_service->GetFaviconImageForPageURL(
 403       url,
 404       base::Bind(&JumpList::OnFaviconDataAvailable, base::Unretained(this)),
 405       &cancelable_task_tracker_);
 406 }
 407
 408 void JumpList::OnFaviconDataAvailable(
 409     const favicon_base::FaviconImageResult& image_result) {
 410   // If there is currently a favicon request in progress, it is now outdated,
 411   // as we have received another, so nullify the handle from the old request.
 412   task_id_ = base::CancelableTaskTracker::kBadTaskId;
 413   // Lock the list to set icon data and pop the url.
 414   {
 415     base::AutoLock auto_lock(list_lock_);
 416     // Attach the received data to the ShellLinkItem object.
 417     // This data will be decoded by the RunUpdateOnFileThread method.
 418     if (!image_result.image.IsEmpty()) {
 419       if (!icon_urls_.empty() && icon_urls_.front().second.get())
 420         icon_urls_.front().second->set_icon_data(image_result.image.AsBitmap());
 421     }
 422
 423     if (!icon_urls_.empty())
 424       icon_urls_.pop_front();
 425   }
 426   // Check whether we need to load more favicons.
 427   StartLoadingFavicon();
 428 }
 429
 430 void JumpList::OnIncognitoAvailabilityChanged() {
 431   bool waiting_for_icons = true;
 432   {
 433     base::AutoLock auto_lock(list_lock_);
 434     waiting_for_icons = !icon_urls_.empty();
 435   }
 436   if (!waiting_for_icons)
 437     PostRunUpdate();
 438   // If |icon_urls_| isn't empty then OnFaviconDataAvailable will eventually
 439   // call PostRunUpdate().
 440 }
 441
 442 void JumpList::PostRunUpdate() {
 443   // Check if incognito windows (or normal windows) are disabled by policy.
 444   IncognitoModePrefs::Availability incognito_availability =
 445       profile_ ? IncognitoModePrefs::GetAvailability(profile_->GetPrefs())
 446                : IncognitoModePrefs::ENABLED;
 447
 448   BrowserThread::PostTask(
 449       BrowserThread::FILE, FROM_HERE,
 450       base::Bind(&JumpList::RunUpdateOnFileThread,
 451                  this,
 452                  incognito_availability));
 453 }
 454
 455 void JumpList::RunUpdateOnFileThread(
 456     IncognitoModePrefs::Availability incognito_availability) {
 457   ShellLinkItemList local_most_visited_pages;
 458   ShellLinkItemList local_recently_closed_pages;
 459
 460   {
 461     base::AutoLock auto_lock(list_lock_);
 462     // Make sure we are not out of date: if icon_urls_ is not empty, then
 463     // another notification has been received since we processed this one
 464     if (!icon_urls_.empty())
 465       return;
 466
 467     // Make local copies of lists so we can release the lock.
 468     local_most_visited_pages = most_visited_pages_;
 469     local_recently_closed_pages = recently_closed_pages_;
 470   }
 471
 472   // Delete the directory which contains old icon files, rename the current
 473   // icon directory, and create a new directory which contains new JumpList
 474   // icon files.
 475   base::FilePath icon_dir_old(icon_dir_.value() + L"Old");
 476   if (base::PathExists(icon_dir_old))
 477     base::DeleteFile(icon_dir_old, true);
 478   base::Move(icon_dir_, icon_dir_old);
 479   base::CreateDirectory(icon_dir_);
 480
 481   // Create temporary icon files for shortcuts in the "Most Visited" category.
 482   CreateIconFiles(local_most_visited_pages);
 483
 484   // Create temporary icon files for shortcuts in the "Recently Closed"
 485   // category.
 486   CreateIconFiles(local_recently_closed_pages);
 487
 488   // We finished collecting all resources needed for updating an application
 489   // JumpList. So, create a new JumpList and replace the current JumpList
 490   // with it.
 491   UpdateJumpList(app_id_.c_str(),
 492                  local_most_visited_pages,
 493                  local_recently_closed_pages,
 494                  incognito_availability);
 495 }
 496
 497 void JumpList::CreateIconFiles(const ShellLinkItemList& item_list) {
 498   for (ShellLinkItemList::const_iterator item = item_list.begin();
 499       item != item_list.end(); ++item) {
 500     base::FilePath icon_path;
 501     if (CreateIconFile((*item)->icon_data(), icon_dir_, &icon_path))
 502       (*item)->set_icon(icon_path.value(), 0);
 503   }
 504 }
 505
 506 void JumpList::TopSitesLoaded(history::TopSites* top_sites) {
 507 }
 508
 509 void JumpList::TopSitesChanged(history::TopSites* top_sites) {
 510   top_sites->GetMostVisitedURLs(
 511       base::Bind(&JumpList::OnMostVisitedURLsAvailable,
 512                  weak_ptr_factory_.GetWeakPtr()),
 513       false);
 514 }