4 files changed, 35 insertions, 34 deletions
diff --git a/toolkit/components/alerts/nsAlertsService.cpp b/toolkit/components/alerts/nsAlertsService.cpp
index 35418dd17..dd67ad983 100644
--- a/toolkit/components/alerts/nsAlertsService.cpp
+++ b/toolkit/components/alerts/nsAlertsService.cpp
@@ -22,6 +22,10 @@
 #include "nsIFaviconService.h"
 #endif // MOZ_PLACES
 
+#ifdef XP_WIN
+#include <shellapi.h>
+#endif
+
 using namespace mozilla;
 
 using mozilla::dom::ContentChild;
@@ -154,23 +158,12 @@ bool nsAlertsService::ShouldShowAlert()
   bool result = true;
 
 #ifdef XP_WIN
-  HMODULE shellDLL = ::LoadLibraryW(L"shell32.dll");
-  if (!shellDLL)
-    return result;
-
-  SHQueryUserNotificationStatePtr pSHQueryUserNotificationState =
-    (SHQueryUserNotificationStatePtr) ::GetProcAddress(shellDLL, "SHQueryUserNotificationState");
-
-  if (pSHQueryUserNotificationState) {
-    MOZ_QUERY_USER_NOTIFICATION_STATE qstate;
-    if (SUCCEEDED(pSHQueryUserNotificationState(&qstate))) {
-      if (qstate != QUNS_ACCEPTS_NOTIFICATIONS) {
-         result = false;
-      }
+  QUERY_USER_NOTIFICATION_STATE qstate;
+  if (SUCCEEDED(SHQueryUserNotificationState(&qstate))) {
+    if (qstate != QUNS_ACCEPTS_NOTIFICATIONS) {
+       result = false;
     }
   }
-
-  ::FreeLibrary(shellDLL);
 #endif
 
   return result;
diff --git a/toolkit/components/alerts/nsAlertsService.h b/toolkit/components/alerts/nsAlertsService.h
index 3f23eaabf..d2b2e1e6c 100644
--- a/toolkit/components/alerts/nsAlertsService.h
+++ b/toolkit/components/alerts/nsAlertsService.h
@@ -10,23 +10,6 @@
 #include "nsCOMPtr.h"
 #include "nsXULAlerts.h"
 
-#ifdef XP_WIN
-typedef enum tagMOZ_QUERY_USER_NOTIFICATION_STATE {
-    QUNS_NOT_PRESENT = 1,
-    QUNS_BUSY = 2,
-    QUNS_RUNNING_D3D_FULL_SCREEN = 3,
-    QUNS_PRESENTATION_MODE = 4,
-    QUNS_ACCEPTS_NOTIFICATIONS = 5,
-    QUNS_QUIET_TIME = 6,
-    QUNS_IMMERSIVE = 7
-} MOZ_QUERY_USER_NOTIFICATION_STATE;
-
-extern "C" {
-// This function is Windows Vista or later
-typedef HRESULT (__stdcall *SHQueryUserNotificationStatePtr)(MOZ_QUERY_USER_NOTIFICATION_STATE *pquns);
-}
-#endif // defined(XP_WIN)
-
 class nsAlertsService : public nsIAlertsService,
                         public nsIAlertsDoNotDisturb
 {
diff --git a/toolkit/components/alerts/resources/content/alert.js b/toolkit/components/alerts/resources/content/alert.js
index 523ec378e..ead4d503f 100644
--- a/toolkit/components/alerts/resources/content/alert.js
+++ b/toolkit/components/alerts/resources/content/alert.js
@@ -7,7 +7,21 @@ var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
 Cu.import("resource://gre/modules/AppConstants.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
 
-// Copied from nsILookAndFeel.h, see comments on eMetric_AlertNotificationOrigin
+/*
+ * This indicates from which corner of the screen alerts slide in,
+ * and from which direction (horizontal/vertical).
+ * 0, the default, represents bottom right, sliding vertically.
+ * Use any bitwise combination of the following constants:
+ * NS_ALERT_HORIZONTAL (1), NS_ALERT_LEFT (2), NS_ALERT_TOP (4).
+ *
+ *       6       4
+ *     +-----------+
+ *    7|           |5
+ *     |           |
+ *    3|           |1
+ *     +-----------+
+ *       2       0
+ */
 const NS_ALERT_HORIZONTAL = 1;
 const NS_ALERT_LEFT = 2;
 const NS_ALERT_TOP = 4;
@@ -41,6 +55,8 @@ function prefillAlertInfo() {
   // arguments[11] -> the nsIURI.hostPort of the origin, optional
   // arguments[12] -> the alert icon URL, optional
 
+  document.getElementById('alertTime').setAttribute('value', (new Date).getTime());
+
   switch (window.arguments.length) {
     default:
     case 13: {
@@ -235,7 +251,15 @@ function moveWindowToEnd() {
   let windows = Services.wm.getEnumerator("alert:alert");
   while (windows.hasMoreElements()) {
     let alertWindow = windows.getNext();
-    if (alertWindow != window) {
+    let alertWindowTime = Number(
+        alertWindow.document.getElementById('alertTime').getAttribute('value'));
+    let windowTime = Number(
+        window.document.getElementById('alertTime').getAttribute('value'));
+    // The time of window creation.
+    // Otherwise calling the notification twice (and more) in a row
+    // does not work.
+    // See https://bugzilla.mozilla.org/show_bug.cgi?id=1263155
+    if ((alertWindow != window) && (alertWindowTime <= windowTime)) {
       if (gOrigin & NS_ALERT_TOP) {
         y = Math.max(y, alertWindow.screenY + alertWindow.outerHeight - WINDOW_SHADOW_SPREAD);
       } else {
diff --git a/toolkit/components/alerts/resources/content/alert.xul b/toolkit/components/alerts/resources/content/alert.xul
index 8597d9954..1549f4530 100644
--- a/toolkit/components/alerts/resources/content/alert.xul
+++ b/toolkit/components/alerts/resources/content/alert.xul
@@ -24,6 +24,7 @@
   <script type="application/javascript" src="chrome://global/content/alerts/alert.js"/>
 
   <vbox id="alertBox" class="alertBox">
+    <label id="alertTime" value="" hidden="true"/>
     <box id="alertTitleBox">
       <image id="alertIcon"/>
       <label id="alertTitleLabel" class="alertTitle plain" crop="end"/>