[evolution] Offer 'Open Message Filters' in alert about modified filter due to folder deletion

[Milan Crha <mcrha src gnome org>]

commit 7404111f7345743b4a013a187695ac55f06449e5
Author: Milan Crha <mcrha redhat com>
Date:   Thu Oct 12 13:49:13 2017 +0200

    Offer 'Open Message Filters' in alert about modified filter due to folder deletion
    
    Just to make it easier to edit the filters. Clicking the button doesn't
    hide the alert, because it contains list of affected filters, thus users
    have that information still available.

 src/mail/mail-autofilter.c |   56 ++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 54 insertions(+), 2 deletions(-)
---
diff --git a/src/mail/mail-autofilter.c b/src/mail/mail-autofilter.c
index 23536ef..7cec5ac 100644
--- a/src/mail/mail-autofilter.c
+++ b/src/mail/mail-autofilter.c
@@ -448,6 +448,46 @@ mail_filter_rename_folder (CamelStore *store,
        g_object_unref (session);
 }
 
+static void
+mail_autofilter_open_filters_clicked_cb (GtkWidget *button,
+                                        gpointer user_data)
+{
+       EShellBackend *shell_backend;
+       EShellContent *shell_content;
+       EShellWindow *shell_window;
+       EShellView *shell_view = NULL;
+       EMailSession *session;
+       EShell *shell;
+       GList *windows, *link;
+
+       shell = e_shell_get_default ();
+
+       windows = gtk_application_get_windows (GTK_APPLICATION (shell));
+
+       for (link = windows; link && !shell_view; link = g_list_next (link)) {
+               GtkWindow *window = link->data;
+
+               if (E_IS_SHELL_WINDOW (window)) {
+                       shell_window = E_SHELL_WINDOW (window);
+                       shell_view = e_shell_window_peek_shell_view (shell_window, "mail");
+               }
+       }
+
+       if (!shell_view)
+               return;
+
+       shell_window = e_shell_view_get_shell_window (shell_view);
+       shell_backend = e_shell_view_get_shell_backend (shell_view);
+       shell_content = e_shell_view_get_shell_content (shell_view);
+
+       session = e_mail_backend_get_session (E_MAIL_BACKEND (shell_backend));
+
+       em_utils_edit_filters (
+               session,
+               E_ALERT_SINK (shell_content),
+               GTK_WINDOW (shell_window));
+}
+
 void
 mail_filter_delete_folder (CamelStore *store,
                            const gchar *folder_name,
@@ -478,6 +518,8 @@ mail_filter_delete_folder (CamelStore *store,
        deleted = e_rule_context_delete_uri (
                (ERuleContext *) fc, uri, g_str_equal);
        if (deleted) {
+               EAlert *alert;
+               GtkWidget *button;
                GString *s;
                guint s_count;
                gchar *info;
@@ -511,8 +553,18 @@ mail_filter_delete_folder (CamelStore *store,
                        "The following filter rules\n%s have been modified "
                        "to account for the deleted folder\n“%s”.",
                        s_count), s->str, folder_name);
-               e_alert_submit (
-                       alert_sink, "mail:filter-updated", info, NULL);
+
+               alert = e_alert_new ("mail:filter-updated", info, NULL);
+
+               button = gtk_button_new_with_mnemonic (_("Open Message Filters"));
+               gtk_widget_show (button);
+               g_signal_connect (button, "clicked",
+                       G_CALLBACK (mail_autofilter_open_filters_clicked_cb), NULL);
+
+               e_alert_add_widget (alert, button);
+
+               e_alert_sink_submit_alert (alert_sink, alert);
+               g_object_unref (alert);
                g_string_free (s, TRUE);
                g_free (info);