OSX: show file dialog in showCocoaFilePanel, don't wait for exec()

This reverts commit 21e6c7ae4745a76b676dfaa9fe17a2dd40fc0c5c
because in QtQuick.Controls, we do not call exec(): we just set the
dialog visible.  If it is a sheet, then it is already acting as a
modal dialog, basically.

Task-number: QTBUG-46691
Change-Id: I7fe89f2a2ade0d4ddcf540c9bfc4f5963a077471
Reviewed-by: Timur Pocheptsov <Timur.Pocheptsov@digia.com>

2 files changed, 7 insertions, 22 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.h b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.h
index 36943a563e..48d7efe174 100644
--- a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.h
+++ b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.h
@@ -51,7 +51,6 @@ public:
     virtual ~QCocoaFileDialogHelper();
 
     void exec();
-    void execModalForWindow(QWindow *parent);
 
     bool defaultNameFilterDisables() const;
 
diff --git a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
index 19f81c72a1..4ece1b5a22 100644
--- a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
+++ b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
@@ -254,22 +254,17 @@ static QString strippedText(QString s)
         || [self panel:nil shouldShowFilename:filepath];
 
     [self updateProperties];
+    QCocoaMenuBar::redirectKnownMenuItemsToFirstResponder();
     [mSavePanel setDirectoryURL: [NSURL fileURLWithPath:mCurrentDir]];
 
     [mSavePanel setNameFieldStringValue:selectable ? QCFString::toNSString(info.fileName()) : @""];
     NSWindow *nsparent = static_cast<NSWindow *>(qGuiApp->platformNativeInterface()->nativeResourceForWindow("nswindow", parent));
 
-    qApp->processEvents(QEventLoop::ExcludeUserInputEvents | QEventLoop::ExcludeSocketNotifiers);
-    QCocoaMenuBar::redirectKnownMenuItemsToFirstResponder();
-
     [mSavePanel beginSheetModalForWindow:nsparent completionHandler:^(NSInteger result){
-        [[NSApplication sharedApplication] stopModalWithCode:result];
+        mReturnCode = result;
+        if (mHelper)
+            mHelper->QNSOpenSavePanelDelegate_panelClosed(result == NSOKButton);
     }];
-
-    mReturnCode = [[NSApplication sharedApplication] runModalForWindow:nsparent];
-    QAbstractEventDispatcher::instance()->interrupt();
-    if (mHelper)
-        mHelper->QNSOpenSavePanelDelegate_panelClosed(mReturnCode == NSOKButton);
 }
 
 - (BOOL)isHiddenFile:(NSString *)filename isDir:(BOOL)isDir
@@ -711,15 +706,14 @@ void QCocoaFileDialogHelper::createNSOpenSavePanelDelegate()
 
 bool QCocoaFileDialogHelper::showCocoaFilePanel(Qt::WindowModality windowModality, QWindow *parent)
 {
-    Q_UNUSED(parent)
-
     createNSOpenSavePanelDelegate();
     if (!mDelegate)
         return false;
     if (windowModality == Qt::NonModal)
         [mDelegate showModelessPanel];
-    // no need to show a Qt::ApplicationModal dialog here, since it will be done in exec;
-    // Qt::WindowModal will be done in execModalForWindow.
+    else if (windowModality == Qt::WindowModal && parent)
+        [mDelegate showWindowModalSheet:parent];
+    // no need to show a Qt::ApplicationModal dialog here, since it will be done in _q_platformRunNativeAppModalPanel()
     return true;
 }
 
@@ -751,14 +745,6 @@ void QCocoaFileDialogHelper::exec()
 
 }
 
-void QCocoaFileDialogHelper::execModalForWindow(QWindow *parent)
-{
-    if (!parent)
-        return exec();
-
-    [mDelegate showWindowModalSheet:parent];
-}
-
 bool QCocoaFileDialogHelper::defaultNameFilterDisables() const
 {
     return true;