From 0f30acf71c6b9788c96b322d930fc030d379f03b Mon Sep 17 00:00:00 2001 From: "pierre%netscape.com" Date: Sat, 5 Sep 1998 08:05:30 +0000 Subject: [PATCH] ported AddMouseListener() and AddEventListener() from Windows git-svn-id: svn://10.0.0.236/trunk@9425 18797224-902f-48f8-a5cc-f745e15eee43 --- mozilla/widget/src/mac/nsWindow.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mozilla/widget/src/mac/nsWindow.cpp b/mozilla/widget/src/mac/nsWindow.cpp index 26b53ee3156..70fcb5e2723 100644 --- a/mozilla/widget/src/mac/nsWindow.cpp +++ b/mozilla/widget/src/mac/nsWindow.cpp @@ -815,6 +815,8 @@ void nsWindow::SetTitle(const nsString& aTitle) //------------------------------------------------------------------------- void nsWindow::AddMouseListener(nsIMouseListener * aListener) { + NS_PRECONDITION(mMouseListener == nsnull, "Null mouse listener"); + mMouseListener = aListener; } //------------------------------------------------------------------------- @@ -824,6 +826,8 @@ void nsWindow::AddMouseListener(nsIMouseListener * aListener) //------------------------------------------------------------------------- void nsWindow::AddEventListener(nsIEventListener * aListener) { + NS_PRECONDITION(mEventListener == nsnull, "Null event listener"); + mEventListener = aListener; } PRBool nsWindow::ConvertStatus(nsEventStatus aStatus)