Bug 1638417 - Implement some of nsIAlertsDoNotDisturb for the GNOME system alerts service. r=MattN

Differential Revision: https://phabricator.services.mozilla.com/D76385

toolkit/system/gnome/nsSystemAlertsService.cpp

@@ -14,6 +14,7 @@ NS_IMPL_RELEASE(nsSystemAlertsService)
 NS_INTERFACE_MAP_BEGIN(nsSystemAlertsService)
   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIAlertsService)
   NS_INTERFACE_MAP_ENTRY(nsIAlertsService)
+  NS_INTERFACE_MAP_ENTRY(nsIAlertsDoNotDisturb)
 NS_INTERFACE_MAP_END
 
 nsSystemAlertsService::nsSystemAlertsService() = default;
@@ -58,6 +59,11 @@ NS_IMETHODIMP nsSystemAlertsService::ShowAlert(nsIAlertNotification* aAlert,
       new nsAlertsIconListener(this, alertName);
   if (!alertListener) return NS_ERROR_OUT_OF_MEMORY;
 
+  if (mSuppressForScreenSharing) {
+    alertListener->SendClosed();
+    return NS_OK;
+  }
+
   AddListener(alertName, alertListener);
   return alertListener->InitAlertAsync(aAlert, aAlertListener);
 }
@@ -72,6 +78,27 @@ NS_IMETHODIMP nsSystemAlertsService::CloseAlert(const nsAString& aAlertName,
   return listener->Close();
 }
 
+NS_IMETHODIMP nsSystemAlertsService::GetManualDoNotDisturb(bool* aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsSystemAlertsService::SetManualDoNotDisturb(bool aDoNotDisturb) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsSystemAlertsService::GetSuppressForScreenSharing(
+    bool* aRetVal) {
+  NS_ENSURE_ARG(aRetVal);
+  *aRetVal = mSuppressForScreenSharing;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsSystemAlertsService::SetSuppressForScreenSharing(
+    bool aSuppress) {
+  mSuppressForScreenSharing = aSuppress;
+  return NS_OK;
+}
+
 bool nsSystemAlertsService::IsActiveListener(const nsAString& aAlertName,
                                              nsAlertsIconListener* aListener) {
   return mActiveListeners.Get(aAlertName) == aListener;

toolkit/system/gnome/nsSystemAlertsService.h

@@ -12,9 +12,11 @@
 
 class nsAlertsIconListener;
 
-class nsSystemAlertsService : public nsIAlertsService {
+class nsSystemAlertsService : public nsIAlertsService,
+                              public nsIAlertsDoNotDisturb {
  public:
   NS_DECL_NSIALERTSSERVICE
+  NS_DECL_NSIALERTSDONOTDISTURB
   NS_DECL_ISUPPORTS
 
   nsSystemAlertsService();
@@ -33,6 +35,9 @@ class nsSystemAlertsService : public nsIAlertsService {
                    nsAlertsIconListener* aListener);
 
   nsDataHashtable<nsStringHashKey, nsAlertsIconListener*> mActiveListeners;
+
+ private:
+  bool mSuppressForScreenSharing = false;
 };
 
 #endif /* nsSystemAlertsService_h__ */