[epiphany] Keep window open when closing the last non overview tab

[Michael Catanzaro <mcatanzaro src gnome org>]

commit fed1608828d009f4e8d27b8da8c1f6503a5c9e32
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Wed Dec 19 14:31:10 2018 +0100

    Keep window open when closing the last non overview tab
    
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/issues/80

 src/ephy-window.c | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)
---
diff --git a/src/ephy-window.c b/src/ephy-window.c
index 6273c739d..6670babcc 100644
--- a/src/ephy-window.c
+++ b/src/ephy-window.c
@@ -2627,6 +2627,8 @@ static void
 ephy_window_close_tab (EphyWindow *window,
                        EphyEmbed  *tab)
 {
+  EphyWebView *web_view;
+
   /* This function can be called many times for the same embed if the
    * web process (or network process) has hung. E.g. the user could
    * click the close button several times. This is difficult to guard
@@ -2648,16 +2650,21 @@ ephy_window_close_tab (EphyWindow *window,
   if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (tab), "ephy-window-close-tab-closed")))
     return;
 
-  g_object_set_data (G_OBJECT (tab), "ephy-window-close-tab-closed", GINT_TO_POINTER (TRUE));
-  gtk_widget_destroy (GTK_WIDGET (tab));
+  web_view = ephy_embed_get_web_view (tab);
+  if (gtk_notebook_get_n_pages (window->notebook) > 1 || ephy_web_view_is_overview (web_view)) {
+    g_object_set_data (G_OBJECT (tab), "ephy-window-close-tab-closed", GINT_TO_POINTER (TRUE));
+    gtk_widget_destroy (GTK_WIDGET (tab));
 
-  /* If that was the last tab, destroy the window.
-   *
-   * Beware: window->closing could be true now, after destroying the
-   * tab, even if it wasn't at the start of this function.
-   */
-  if (!window->closing && gtk_notebook_get_n_pages (window->notebook) == 0)
-   gtk_widget_destroy (GTK_WIDGET (window));
+    /* If that was the last tab, destroy the window.
+     *
+     * Beware: window->closing could be true now, after destroying the
+     * tab, even if it wasn't at the start of this function.
+     */
+    if (!window->closing && gtk_notebook_get_n_pages (window->notebook) == 0)
+      gtk_widget_destroy (GTK_WIDGET (window));
+  } else {
+    ephy_web_view_load_url (web_view, "about:overview");
+  }
 }
 
 typedef struct {