chrome/browser/status_icons/desktop_notification_balloon.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/status_icons/desktop_notification_balloon.h"
   6
   7 #include "base/bind.h"
   8 #include "base/location.h"
   9 #include "base/single_thread_task_runner.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/thread_task_runner_handle.h"
  12 #include "base/threading/thread_restrictions.h"
  13 #include "chrome/browser/browser_process.h"
  14 #include "chrome/browser/notifications/desktop_notification_service.h"
  15 #include "chrome/browser/notifications/notification.h"
  16 #include "chrome/browser/notifications/notification_delegate.h"
  17 #include "chrome/browser/notifications/notification_ui_manager.h"
  18 #include "chrome/browser/profiles/profile_manager.h"
  19 #include "third_party/skia/include/core/SkBitmap.h"
  20 #include "ui/gfx/image/image_skia.h"
  21
  22 namespace {
  23
  24 void CloseBalloon(const std::string& id, ProfileID profile_id) {
  25   // The browser process may have gone away during shutting down, in this case
  26   // notification_ui_manager() will close the balloon in its destructor.
  27   if (!g_browser_process)
  28     return;
  29
  30   g_browser_process->notification_ui_manager()->CancelById(id, profile_id);
  31 }
  32
  33 // Prefix added to the notification ids.
  34 const char kNotificationPrefix[] = "desktop_notification_balloon.";
  35
  36 // Timeout for automatically dismissing the notification balloon.
  37 const size_t kTimeoutSeconds = 6;
  38
  39 class DummyNotificationDelegate : public NotificationDelegate {
  40  public:
  41   explicit DummyNotificationDelegate(const std::string& id, Profile* profile)
  42       : id_(kNotificationPrefix + id), profile_(profile) {}
  43
  44   void Display() override {
  45     base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
  46         FROM_HERE, base::Bind(&CloseBalloon, id(),
  47                               NotificationUIManager::GetProfileID(profile_)),
  48         base::TimeDelta::FromSeconds(kTimeoutSeconds));
  49   }
  50   std::string id() const override { return id_; }
  51
  52  private:
  53   ~DummyNotificationDelegate() override {}
  54
  55   std::string id_;
  56   Profile* profile_;
  57 };
  58
  59 }  // anonymous namespace
  60
  61 int DesktopNotificationBalloon::id_count_ = 1;
  62
  63 DesktopNotificationBalloon::DesktopNotificationBalloon() : profile_(NULL) {
  64 }
  65
  66 DesktopNotificationBalloon::~DesktopNotificationBalloon() {
  67   if (!notification_id_.empty())
  68     CloseBalloon(notification_id_,
  69                  NotificationUIManager::GetProfileID(profile_));
  70 }
  71
  72 void DesktopNotificationBalloon::DisplayBalloon(
  73     const gfx::ImageSkia& icon,
  74     const base::string16& title,
  75     const base::string16& contents) {
  76   // Allowing IO access is required here to cover the corner case where
  77   // there is no last used profile and the default one is loaded.
  78   // IO access won't be required for normal uses.
  79   Profile* profile;
  80   {
  81     base::ThreadRestrictions::ScopedAllowIO allow_io;
  82     profile = ProfileManager::GetLastUsedProfile();
  83   }
  84
  85   NotificationDelegate* delegate =
  86       new DummyNotificationDelegate(base::IntToString(id_count_++), profile_);
  87   Notification notification(GURL(), title, contents, gfx::Image(icon),
  88       base::string16(), std::string(), delegate);
  89
  90   g_browser_process->notification_ui_manager()->Add(notification, profile);
  91
  92   notification_id_ = notification.delegate_id();
  93   profile_ = profile;
  94 }