chrome/browser/lifetime/browser_close_manager.cc

   1 // Copyright 2013 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/lifetime/browser_close_manager.h"
   6
   7 #include "chrome/browser/background/background_mode_manager.h"
   8 #include "chrome/browser/browser_process.h"
   9 #include "chrome/browser/browser_shutdown.h"
  10 #include "chrome/browser/download/download_service.h"
  11 #include "chrome/browser/download/download_service_factory.h"
  12 #include "chrome/browser/profiles/profile_manager.h"
  13 #include "chrome/browser/ui/browser.h"
  14 #include "chrome/browser/ui/browser_iterator.h"
  15 #include "chrome/browser/ui/browser_list.h"
  16 #include "chrome/browser/ui/browser_window.h"
  17 #include "chrome/browser/ui/chrome_pages.h"
  18 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
  19 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  20 #include "content/public/browser/web_contents.h"
  21
  22 namespace {
  23
  24 // Navigates a browser window for |profile|, creating one if necessary, to the
  25 // downloads page if there are downloads in progress for |profile|.
  26 void ShowInProgressDownloads(Profile* profile) {
  27   DownloadService* download_service =
  28       DownloadServiceFactory::GetForBrowserContext(profile);
  29   if (download_service->NonMaliciousDownloadCount() > 0) {
  30     chrome::ScopedTabbedBrowserDisplayer displayer(profile,
  31                                                    chrome::GetActiveDesktop());
  32     chrome::ShowDownloads(displayer.browser());
  33   }
  34 }
  35
  36 }  // namespace
  37
  38 BrowserCloseManager::BrowserCloseManager() : current_browser_(NULL) {}
  39
  40 BrowserCloseManager::~BrowserCloseManager() {}
  41
  42 void BrowserCloseManager::StartClosingBrowsers() {
  43   // If the session is ending, skip straight to closing the browsers. There's no
  44   // time to wait for beforeunload dialogs.
  45   if (browser_shutdown::GetShutdownType() == browser_shutdown::END_SESSION) {
  46     // Tell everyone that we are shutting down.
  47     browser_shutdown::SetTryingToQuit(true);
  48     CloseBrowsers();
  49     return;
  50   }
  51   TryToCloseBrowsers();
  52 }
  53
  54 void BrowserCloseManager::CancelBrowserClose() {
  55   browser_shutdown::SetTryingToQuit(false);
  56   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
  57     it->ResetBeforeUnloadHandlers();
  58   }
  59 }
  60
  61 void BrowserCloseManager::TryToCloseBrowsers() {
  62   // If all browser windows can immediately be closed, fall out of this loop and
  63   // close the browsers. If any browser window cannot be closed, temporarily
  64   // stop closing. CallBeforeUnloadHandlers prompts the user and calls
  65   // OnBrowserReportCloseable with the result. If the user confirms the close,
  66   // this will trigger TryToCloseBrowsers to try again.
  67   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
  68     if (it->CallBeforeUnloadHandlers(
  69             base::Bind(&BrowserCloseManager::OnBrowserReportCloseable, this))) {
  70       current_browser_ = *it;
  71       return;
  72     }
  73   }
  74   CheckForDownloadsInProgress();
  75 }
  76
  77 void BrowserCloseManager::OnBrowserReportCloseable(bool proceed) {
  78   if (!current_browser_)
  79     return;
  80
  81   current_browser_ = NULL;
  82
  83   if (proceed)
  84     TryToCloseBrowsers();
  85   else
  86     CancelBrowserClose();
  87 }
  88
  89 void BrowserCloseManager::CheckForDownloadsInProgress() {
  90   int download_count = DownloadService::NonMaliciousDownloadCountAllProfiles();
  91   if (download_count == 0) {
  92     CloseBrowsers();
  93     return;
  94   }
  95   ConfirmCloseWithPendingDownloads(
  96       download_count,
  97       base::Bind(&BrowserCloseManager::OnReportDownloadsCancellable, this));
  98 }
  99
 100 void BrowserCloseManager::ConfirmCloseWithPendingDownloads(
 101     int download_count,
 102     const base::Callback<void(bool)>& callback) {
 103   Browser* browser =
 104       BrowserList::GetInstance(chrome::GetActiveDesktop())->GetLastActive();
 105   DCHECK(browser);
 106   browser->window()->ConfirmBrowserCloseWithPendingDownloads(
 107       download_count,
 108       Browser::DOWNLOAD_CLOSE_BROWSER_SHUTDOWN,
 109       true,
 110       callback);
 111 }
 112
 113 void BrowserCloseManager::OnReportDownloadsCancellable(bool proceed) {
 114   if (proceed) {
 115     CloseBrowsers();
 116     return;
 117   }
 118
 119   CancelBrowserClose();
 120
 121   // Open the downloads page for each profile with downloads in progress.
 122   std::vector<Profile*> profiles(
 123       g_browser_process->profile_manager()->GetLoadedProfiles());
 124   for (Profile* profile : profiles) {
 125     ShowInProgressDownloads(profile);
 126     if (profile->HasOffTheRecordProfile())
 127       ShowInProgressDownloads(profile->GetOffTheRecordProfile());
 128   }
 129 }
 130
 131 void BrowserCloseManager::CloseBrowsers() {
 132 #if defined(ENABLE_SESSION_SERVICE)
 133   // Before we close the browsers shutdown all session services. That way an
 134   // exit can restore all browsers open before exiting.
 135   ProfileManager::ShutdownSessionServices();
 136 #endif
 137   if (!browser_shutdown::IsTryingToQuit()) {
 138     BackgroundModeManager* background_mode_manager =
 139         g_browser_process->background_mode_manager();
 140     if (background_mode_manager)
 141       background_mode_manager->SuspendBackgroundMode();
 142   }
 143
 144   bool session_ending =
 145       browser_shutdown::GetShutdownType() == browser_shutdown::END_SESSION;
 146   for (scoped_ptr<chrome::BrowserIterator> it_ptr(
 147            new chrome::BrowserIterator());
 148        !it_ptr->done();) {
 149     Browser* browser = **it_ptr;
 150     browser->window()->Close();
 151     if (!session_ending) {
 152       it_ptr->Next();
 153     } else {
 154       // This path is hit during logoff/power-down. In this case we won't get
 155       // a final message and so we force the browser to be deleted.
 156       // Close doesn't immediately destroy the browser
 157       // (Browser::TabStripEmpty() uses invoke later) but when we're ending the
 158       // session we need to make sure the browser is destroyed now. So, invoke
 159       // DestroyBrowser to make sure the browser is deleted and cleanup can
 160       // happen.
 161       while (browser->tab_strip_model()->count())
 162         delete browser->tab_strip_model()->GetWebContentsAt(0);
 163       browser->window()->DestroyBrowser();
 164       it_ptr.reset(new chrome::BrowserIterator());
 165       if (!it_ptr->done() && browser == **it_ptr) {
 166         // Destroying the browser should have removed it from the browser list.
 167         // We should never get here.
 168         NOTREACHED();
 169         return;
 170       }
 171     }
 172   }
 173 }