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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include <AppKit/AppKit.h>
#include "qcocoawindowmanager.h"
#include "qcocoawindow.h"
#include <QtCore/private/qcore_mac_p.h>
#include <QtGui/qguiapplication.h>
#include <QtGui/qwindow.h>
QT_BEGIN_NAMESPACE
QCocoaWindowManager::QCocoaWindowManager()
{
if (NSApp) {
initialize();
} else {
m_applicationDidFinishLaunchingObserver = QMacNotificationObserver(nil,
NSApplicationDidFinishLaunchingNotification, [this] { initialize(); });
}
}
void QCocoaWindowManager::initialize()
{
Q_ASSERT(NSApp);
// Whenever the modalWindow property of NSApplication changes we have a new
// modal session running. Observing the app modal window instead of our own
// event dispatcher sessions allows us to track session started by native
// APIs as well. We need to check the initial state as well, in case there
// is already a modal session running.
m_modalSessionObserver = QMacKeyValueObserver(
NSApp, @"modalWindow", [this] { modalSessionChanged(); },
NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew);
}
void QCocoaWindowManager::modalSessionChanged()
{
// Make sure that no window is overlapping the modal window. This can
// happen for e.g. splash screens, which have the NSPopUpMenuWindowLevel.
for (auto *window : QGuiApplication::topLevelWindows()) {
auto *platformWindow = static_cast<QCocoaWindow*>(window->handle());
if (!platformWindow)
continue;
auto naturalWindowLevel = platformWindow->windowLevel(window->flags());
if (naturalWindowLevel > NSModalPanelWindowLevel) {
NSWindow *nativeWindow = platformWindow->nativeWindow();
if (NSApp.modalWindow) {
// Lower window to that of the modal windows, but no less
nativeWindow.level = NSModalPanelWindowLevel;
if ([nativeWindow isVisible])
[nativeWindow orderBack:nil];
} else {
// Restore window's natural window level, whatever that was
nativeWindow.level = naturalWindowLevel;
}
}
}
// Our worksWhenModal implementation is declarative and will normally be picked
// up by AppKit when needed, but to make sure AppKit also reflects the state
// in the window tag, so that the window can be ordered front by clicking it,
// we need to explicitly call setWorksWhenModal.
for (id window in NSApp.windows) {
if ([window isKindOfClass:[QNSPanel class]]) {
auto *panel = static_cast<QNSPanel *>(window);
// Call setter to tell AppKit that our state has changed
[panel setWorksWhenModal:panel.worksWhenModal];
}
}
}
QT_END_NAMESPACE
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