Session management for macOS

This patch aims to implement the session management available on macOS.
Currently applicationShouldTerminate is just a go through that closes
everything and ends the application. The new implementation calls
first appCommitData and cancels the termination properly if required.
This means that if a user wishes to logout, Qt applications can now
cancel that like e.g. answering to Safari asking whether it is ok to
close because of a number of opened tab/window.

Fixes: QTBUG-33034
Change-Id: Id5d7416cb74c762c5424a77c9c7664f0749da7f6
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

1 files changed, 15 insertions, 1 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm b/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
index f1fe2aa98b..3fb9e83d35 100644
--- a/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
+++ b/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
@@ -79,11 +79,14 @@
 #include "qcocoamenuitem.h"
 #include "qcocoansmenu.h"
 
+#if QT_CONFIG(sessionmanager)
+#  include "qcocoasessionmanager.h"
+#endif
+
 #include <qevent.h>
 #include <qurl.h>
 #include <qdebug.h>
 #include <qguiapplication.h>
-#include <private/qguiapplication_p.h>
 #include "qt_mac_p.h"
 #include <qpa/qwindowsysteminterface.h>
 #include <qwindowdefs.h>
@@ -157,6 +160,17 @@ QT_USE_NAMESPACE
         return NSTerminateNow;
     }
 
+#if QT_CONFIG(sessionmanager)
+    QCocoaSessionManager *cocoaSessionManager = QCocoaSessionManager::instance();
+    cocoaSessionManager->resetCancellation();
+    cocoaSessionManager->appCommitData();
+
+    if (cocoaSessionManager->wasCanceled()) {
+        qCDebug(lcQpaApplication) << "Session management canceled application termination";
+        return NSTerminateCancel;
+    }
+#endif
+
     if (!QWindowSystemInterface::handleApplicationTermination<QWindowSystemInterface::SynchronousDelivery>()) {
         qCDebug(lcQpaApplication) << "Application termination canceled";
         return NSTerminateCancel;