[gnome-software/wip/rancell/ubuntu-3-20-2: 33/33] shell: Avoid destroying modal windows in the "response" signal handler

[Robert Ancell <rancell src gnome org>]

commit c914ba97dfbd6e419173bf7ed1a7f02fe3f21ffc
Author: Kalev Lember <klember redhat com>
Date:   Tue Jun 7 15:25:40 2016 +0200

    shell: Avoid destroying modal windows in the "response" signal handler
    
    Other code may legitimately connect to the "response" signal handler as
    well and if we destroy it in the handler, their callbacks are never
    invoked. Instead, do our window tracking in the "unmap" signal handler.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764437

 src/gs-shell.c |   15 +++++----------
 1 files changed, 5 insertions(+), 10 deletions(-)
---
diff --git a/src/gs-shell.c b/src/gs-shell.c
index ab9a7ad..b268f12 100644
--- a/src/gs-shell.c
+++ b/src/gs-shell.c
@@ -90,17 +90,12 @@ enum {
 
 static guint signals [SIGNAL_LAST] = { 0 };
 
-/**
- * gs_shell_modal_dialog_present:
- **/
 static void
-gs_shell_modal_dialog_response_cb (GtkDialog *dialog,
-                                  gint response_id,
-                                  GsShell *shell)
+modal_dialog_unmapped_cb (GtkWidget *dialog,
+                          GsShell *shell)
 {
        GsShellPrivate *priv = gs_shell_get_instance_private (shell);
-       g_debug ("handling modal dialog response %i for %p",
-                response_id, dialog);
+       g_debug ("modal dialog %p unmapped", dialog);
        g_ptr_array_remove (priv->modal_dialogs, dialog);
 }
 
@@ -126,10 +121,10 @@ gs_shell_modal_dialog_present (GsShell *shell, GtkDialog *dialog)
 
        /* add to stack, transfer ownership to here */
        g_ptr_array_add (priv->modal_dialogs, dialog);
+       g_signal_connect (GTK_WIDGET (dialog), "unmap",
+                         G_CALLBACK (modal_dialog_unmapped_cb), shell);
 
        /* present the new one */
-       g_signal_connect (dialog, "response",
-                         G_CALLBACK (gs_shell_modal_dialog_response_cb), shell);
        gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
        gtk_window_present (GTK_WINDOW (dialog));
 }