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) {
  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);
  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)
  39       : id_(kNotificationPrefix + id) {}
  40
  41   virtual void Display() OVERRIDE {
  42     base::MessageLoop::current()->PostDelayedTask(
  43         FROM_HERE,
  44         base::Bind(&CloseBalloon, id()),
  45         base::TimeDelta::FromSeconds(kTimeoutSeconds));
  46   }
  47   virtual void Error() OVERRIDE {}
  48   virtual void Close(bool by_user) OVERRIDE {}
  49   virtual void Click() OVERRIDE {}
  50   virtual std::string id() const OVERRIDE { return id_; }
  51   virtual content::WebContents* GetWebContents() const OVERRIDE {
  52     return NULL;
  53   }
  54
  55  private:
  56   virtual ~DummyNotificationDelegate() {}
  57
  58   std::string id_;
  59 };
  60
  61 }  // anonymous namespace
  62
  63 int DesktopNotificationBalloon::id_count_ = 1;
  64
  65 DesktopNotificationBalloon::DesktopNotificationBalloon() {
  66 }
  67
  68 DesktopNotificationBalloon::~DesktopNotificationBalloon() {
  69   if (!notification_id_.empty())
  70     CloseBalloon(notification_id_);
  71 }
  72
  73 void DesktopNotificationBalloon::DisplayBalloon(
  74     const gfx::ImageSkia& icon,
  75     const base::string16& title,
  76     const base::string16& contents) {
  77   // Allowing IO access is required here to cover the corner case where
  78   // there is no last used profile and the default one is loaded.
  79   // IO access won't be required for normal uses.
  80   Profile* profile;
  81   {
  82     base::ThreadRestrictions::ScopedAllowIO allow_io;
  83     profile = ProfileManager::GetLastUsedProfile();
  84   }
  85   notification_id_ = DesktopNotificationService::AddIconNotification(
  86       GURL(), title, contents, gfx::Image(icon), base::string16(),
  87       new DummyNotificationDelegate(base::IntToString(id_count_++)), profile);
  88 }