[pve-devel] [PATCH installer] fix #4643: show a confirmation dialog when clicking abort

[Maximiliano Sandoval <m.sandoval@proxmox.com>]

Note that unlike the rest of the file, we connect to the response signal
instead of using Gtk3::Dialog->run, the reason is that run blocks the
main loop used by GTK and this undesirable to the point where
Gtk3::Dialog->run was removed for GTK 4.

Signed-off-by: Maximiliano Sandoval <m.sandoval@proxmox.com>
---
 proxinstall | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/proxinstall b/proxinstall
index fb365d4..015496b 100755
--- a/proxinstall
+++ b/proxinstall
@@ -1353,7 +1353,17 @@ sub create_main_window {
     my $abort = Gtk3::Button->new('_Abort');
     $abort->set_can_focus(0);
     $cmdbox->pack_start($abort, 0, 0, 10);
-    $abort->signal_connect(clicked => sub { app_quit(-1); });
+    $abort->signal_connect(clicked => sub {
+	my $msg = 'Are you sure you want to abort the installation?';
+	my $dialog = Gtk3::MessageDialog->new($window, 'modal', 'question', 'yes-no', $msg);
+	$dialog->signal_connect(response => sub {
+	    my ($dialog, $response) = @_;
+
+	    $dialog->close();
+	    app_quit(-1) if $response eq 'yes';
+	});
+	$dialog->present();
+    });
 
     my $vbox2 = Gtk3::Box->new('vertical', 0);
     $hbox->add($vbox2);
-- 
2.39.2