From dd02c1eb38c6dfc8367f2c692e11897b6c00b097 Mon Sep 17 00:00:00 2001
From: Marko Kangas <marko.kangas@theqtcompany.com>
Date: Wed, 6 May 2015 13:51:04 +0300
Subject: [PATCH] Add support to disable close button from the tool window in
 Cocoa.
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Fixed regression from Qt4 that close button could't be disabled
from the tool window. With this patch buttons are hidden before
using button hints like it's on Windows.

Change-Id: I00f03ff9528ccae3b1136312404452b9415953b4
Task-number: QTBUG-45971
Reviewed-by: Morten Johan Sørvig <morten.sorvig@theqtcompany.com>
---
 src/plugins/platforms/cocoa/qcocoawindow.mm | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
index cbe4227b63..86959869cc 100644
--- a/src/plugins/platforms/cocoa/qcocoawindow.mm
+++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
@@ -799,9 +799,22 @@ NSUInteger QCocoaWindow::windowStyleMask(Qt::WindowFlags flags)
     if (flags & Qt::FramelessWindowHint)
         return styleMask;
     if ((type & Qt::Popup) == Qt::Popup) {
-        if (!windowIsPopupType(type))
-            styleMask = (NSUtilityWindowMask | NSResizableWindowMask | NSClosableWindowMask |
-                         NSMiniaturizableWindowMask | NSTitledWindowMask);
+        if (!windowIsPopupType(type)) {
+            styleMask = NSUtilityWindowMask;
+            if (!(flags & Qt::CustomizeWindowHint)) {
+                styleMask |= NSResizableWindowMask | NSClosableWindowMask |
+                             NSMiniaturizableWindowMask | NSTitledWindowMask;
+            } else {
+                if (flags & Qt::WindowMaximizeButtonHint)
+                    styleMask |= NSResizableWindowMask;
+                if (flags & Qt::WindowTitleHint)
+                    styleMask |= NSTitledWindowMask;
+                if (flags & Qt::WindowCloseButtonHint)
+                    styleMask |= NSClosableWindowMask;
+                if (flags & Qt::WindowMinimizeButtonHint)
+                    styleMask |= NSMiniaturizableWindowMask;
+            }
+        }
     } else {
         if (type == Qt::Window && !(flags & Qt::CustomizeWindowHint)) {
             styleMask = (NSResizableWindowMask | NSClosableWindowMask | NSMiniaturizableWindowMask | NSTitledWindowMask);