toolkit/components/alerts/nsXULAlerts.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode:nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsXULAlerts_h__
   7 #define nsXULAlerts_h__
   8
   9 #include "nsCycleCollectionParticipant.h"
  10 #include "nsHashKeys.h"
  11 #include "nsInterfaceHashtable.h"
  12
  13 #include "mozIDOMWindow.h"
  14 #include "nsIAlertsService.h"
  15 #include "nsIObserver.h"
  16
  17 struct PendingAlert {
  18   void Init(nsIAlertNotification* aAlert, nsIObserver* aListener) {
  19     mAlert = aAlert;
  20     mListener = aListener;
  21   }
  22   nsCOMPtr<nsIAlertNotification> mAlert;
  23   nsCOMPtr<nsIObserver> mListener;
  24 };
  25
  26 class nsXULAlerts : public nsIAlertsService,
  27                     public nsIAlertsDoNotDisturb,
  28                     public nsIAlertsIconURI {
  29   friend class nsXULAlertObserver;
  30
  31  public:
  32   NS_DECL_NSIALERTSICONURI
  33   NS_DECL_NSIALERTSDONOTDISTURB
  34   NS_DECL_NSIALERTSSERVICE
  35   NS_DECL_ISUPPORTS
  36
  37   nsXULAlerts() = default;
  38
  39   static already_AddRefed<nsXULAlerts> GetInstance();
  40
  41  protected:
  42   virtual ~nsXULAlerts() = default;
  43   void PersistentAlertFinished();
  44
  45   nsInterfaceHashtable<nsStringHashKey, mozIDOMWindowProxy> mNamedWindows;
  46   uint32_t mPersistentAlertCount = 0;
  47   nsTArray<PendingAlert> mPendingPersistentAlerts;
  48   bool mDoNotDisturb = false;
  49
  50  private:
  51   bool mSuppressForScreenSharing = false;
  52 };
  53
  54 /**
  55  * This class wraps observers for alerts and watches
  56  * for the "alertfinished" event in order to release
  57  * the reference on the nsIDOMWindow of the XUL alert.
  58  */
  59 class nsXULAlertObserver : public nsIObserver {
  60  public:
  61   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  62   NS_DECL_NSIOBSERVER
  63   NS_DECL_CYCLE_COLLECTION_CLASS(nsXULAlertObserver)
  64
  65   nsXULAlertObserver(nsXULAlerts* aXULAlerts, const nsAString& aAlertName,
  66                      nsIObserver* aObserver, bool aIsPersistent)
  67       : mXULAlerts(aXULAlerts),
  68         mAlertName(aAlertName),
  69         mObserver(aObserver),
  70         mIsPersistent(aIsPersistent) {}
  71
  72   void SetAlertWindow(mozIDOMWindowProxy* aWindow) { mAlertWindow = aWindow; }
  73
  74  protected:
  75   virtual ~nsXULAlertObserver() = default;
  76
  77   RefPtr<nsXULAlerts> mXULAlerts;
  78   nsString mAlertName;
  79   nsCOMPtr<mozIDOMWindowProxy> mAlertWindow;
  80   nsCOMPtr<nsIObserver> mObserver;
  81   bool mIsPersistent;
  82 };
  83
  84 #endif /* nsXULAlerts_h__ */