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