From 27efadd78293f5536b455f349797a0490e2f54bb Mon Sep 17 00:00:00 2001
From: "dougt%netscape.com"
 <dougt%netscape.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Thu, 26 Apr 2001 05:28:43 +0000
Subject: [PATCH] Adding a new method that will allow caller to check if there
 pending events in the elder queue. r=sfraser@netscape.com, danm@netscape.com,
 b=76075

git-svn-id: svn://10.0.0.236/trunk@93112 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/xpcom/threads/nsEventQueue.cpp  | 13 +++++++++++++
 mozilla/xpcom/threads/nsIEventQueue.idl |  1 +
 2 files changed, 14 insertions(+)

diff --git a/mozilla/xpcom/threads/nsEventQueue.cpp b/mozilla/xpcom/threads/nsEventQueue.cpp
index df887abf4f0..aca9db61516 100644
--- a/mozilla/xpcom/threads/nsEventQueue.cpp
+++ b/mozilla/xpcom/threads/nsEventQueue.cpp
@@ -337,6 +337,19 @@ nsEventQueueImpl::IsQueueNative(PRBool *aResult)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsEventQueueImpl::PendingEvents(PRBool *aResult)
+{
+    *aResult = PL_EventAvailable(mEventQueue);
+    if (!*aResult && mElderQueue) {
+        nsCOMPtr<nsIEventQueue> elder(do_QueryInterface(mElderQueue));
+        if (elder)
+            return elder->EventAvailable(*aResult);
+    }
+    return NS_OK;
+}
+
+
 NS_IMETHODIMP
 nsEventQueueImpl::ProcessPendingEvents()
 {
diff --git a/mozilla/xpcom/threads/nsIEventQueue.idl b/mozilla/xpcom/threads/nsIEventQueue.idl
index 6bcb8d32fc1..f12135781c8 100644
--- a/mozilla/xpcom/threads/nsIEventQueue.idl
+++ b/mozilla/xpcom/threads/nsIEventQueue.idl
@@ -63,6 +63,7 @@ interface nsIEventQueue : nsISupports
     [noscript] void postSynchronousEvent(in PLEventPtr aEvent, 
                                          out voidPtr aResult);
 	
+    boolean pendingEvents();
     void processPendingEvents();
     void eventLoop();