Cocoa integration - menus and Qt::Tool windows

If an app has only Qt::Tool window(s) at start,
menu is not updated, since Qt::Tool is also
a Qt::Popup (included) and we have a special logic for
Qt::Popup in QCocoaMenuBar::updateMenuBarImmediately.
Using QCocoaApplicationDelegate (ivar 'inLaunch') we
can avoid this problem.

Change-Id: Ie1c4ef241cd19fa0af93c54de2b36e6e932cb77c
Task-number: QTBUG-32539
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>

src/plugins/platforms/cocoa/qcocoaapplicationdelegate.h

@@ -100,6 +100,7 @@
 - (void)setReflectionDelegate:(NSObject <NSApplicationDelegate> *)oldDelegate;
 - (void)getUrl:(NSAppleEventDescriptor *)event withReplyEvent:(NSAppleEventDescriptor *)replyEvent;
 - (void) removeAppleEventHandlers;
+- (bool) inLaunch;
 @end
 
 QT_NAMESPACE_ALIAS_OBJC_CLASS(QCocoaApplicationDelegate);

src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm

@@ -284,6 +284,11 @@ QT_END_NAMESPACE
     [eventManager removeEventHandlerForEventClass:kInternetEventClass andEventID:kAEGetURL];
 }
 
+- (bool) inLaunch
+{
+    return inLaunch;
+}
+
 - (void)applicationDidFinishLaunching:(NSNotification *)aNotification
 {
     Q_UNUSED(aNotification);

src/plugins/platforms/cocoa/qcocoamenubar.mm

@@ -38,6 +38,7 @@
 #include "qcocoamenuloader.h"
 #include "qcocoaapplication.h" // for custom application category
 #include "qcocoaautoreleasepool.h"
+#include "qcocoaapplicationdelegate.h"
 
 #include <QtGui/QGuiApplication>
 #include <QtCore/QDebug>
@@ -265,8 +266,21 @@ void QCocoaMenuBar::updateMenuBarImmediately()
     QCocoaWindow *cw = findWindowForMenubar();
 
     QWindow *win = cw ? cw->window() : 0;
-    if (win && (win->flags() & Qt::Popup) == Qt::Popup)
+    if (win && (win->flags() & Qt::Popup) == Qt::Popup) {
-        return; // context menus, comboboxes, etc. don't need to update the menubar
+        // context menus, comboboxes, etc. don't need to update the menubar,
+        // but if an application has only Qt::Tool window(s) on start,
+        // we still have to update the menubar.
+        if ((win->flags() & Qt::WindowType_Mask) != Qt::Tool)
+            return;
+        typedef QT_MANGLE_NAMESPACE(QCocoaApplicationDelegate) AppDelegate;
+        NSApplication *app = [NSApplication sharedApplication];
+        if (![app.delegate isKindOfClass:[AppDelegate class]])
+            return;
+        // We apply this logic _only_ during the startup.
+        AppDelegate *appDelegate = app.delegate;
+        if (!appDelegate.inLaunch)
+            return;
+    }
 
     if (cw && cw->menubar())
         mb = cw->menubar();