Add QPlatformWindow::close()

Platforms can reimplement this function to control
how non-spontaneous window close is handled.

Make QWindow::close() call this function.

Change-Id: I3da13e6c8519de2af7e54334d8a1e833ce98cba1
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/gui/kernel/qplatformwindow.cpp b/src/gui/kernel/qplatformwindow.cpp
index a66420c364..a3046a9b44 100644
--- a/src/gui/kernel/qplatformwindow.cpp
+++ b/src/gui/kernel/qplatformwindow.cpp
@@ -340,6 +340,20 @@ void QPlatformWindow::setWindowFilePath(const QString &filePath) { Q_UNUSED(file
 void QPlatformWindow::setWindowIcon(const QIcon &icon) { Q_UNUSED(icon); }
 
 /*!
+  Reimplement to let the platform handle non-spontaneous window close.
+
+  When reimplementing make sure to call the base class implementation
+  or QWindowSystemInterface::handleCloseEvent(), which will prompt the
+  user to accept the window close (if needed) and then close the QWindow.
+*/
+bool QPlatformWindow::close()
+{
+    bool accepted = false;
+    QWindowSystemInterface::handleCloseEvent<QWindowSystemInterface::SynchronousDelivery>(window(), &accepted);
+    return accepted;
+}
+
+/*!
   Reimplement to be able to let Qt raise windows to the top of the desktop
 */
 void QPlatformWindow::raise() { qWarning("This plugin does not support raise()"); }