[gnome-software] Avoid triggering unwanted mode switches with search state changes

[Kalev Lember <klember src gnome org>]

commit 493d9c7fbfeeca85270a0bc6bc7f632053fb5889
Author: Kalev Lember <klember redhat com>
Date:   Thu Dec 1 12:17:09 2016 +0100

    Avoid triggering unwanted mode switches with search state changes
    
    Avoid a feedback loop that led to first switching to the overview page
    and then to the details page every time when clicking on a search
    result.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=775373

 src/gs-shell.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-shell.c b/src/gs-shell.c
index 35f5322..208e190 100644
--- a/src/gs-shell.c
+++ b/src/gs-shell.c
@@ -85,6 +85,7 @@ typedef struct
        gulong                   search_changed_id;
        gchar                   *events_info_uri;
        gboolean                 profile_mode;
+       gboolean                 in_mode_change;
 } GsShellPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (GsShell, gs_shell, G_TYPE_OBJECT)
@@ -276,6 +277,7 @@ gs_shell_change_mode (GsShell *shell,
        widget = GTK_WIDGET (gtk_builder_get_object (priv->builder, "header_selection_menu_button"));
        gtk_widget_hide (widget);
 
+       priv->in_mode_change = TRUE;
        /* only show the search button in overview and search pages */
        widget = GTK_WIDGET (gtk_builder_get_object (priv->builder, "search_button"));
        gtk_widget_set_visible (widget, mode == GS_SHELL_MODE_OVERVIEW ||
@@ -284,6 +286,7 @@ gs_shell_change_mode (GsShell *shell,
        widget = GTK_WIDGET (gtk_builder_get_object (priv->builder, "search_bar"));
        gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (widget),
                                        mode == GS_SHELL_MODE_SEARCH);
+       priv->in_mode_change = FALSE;
 
        context = gtk_widget_get_style_context (GTK_WIDGET (gtk_builder_get_object (priv->builder, 
"header")));
        gtk_style_context_remove_class (context, "selection-mode");
@@ -364,7 +367,9 @@ gs_shell_change_mode (GsShell *shell,
                                mode != GS_SHELL_MODE_SEARCH &&
                                !g_queue_is_empty (priv->back_entry_stack));
 
+       priv->in_mode_change = TRUE;
        gs_page_switch_to (new_page, scroll_up);
+       priv->in_mode_change = FALSE;
 
        /* update header bar widgets */
        widget = gs_page_get_header_start_widget (new_page);
@@ -600,6 +605,9 @@ search_button_clicked_cb (GtkToggleButton *toggle_button, GsShell *shell)
        gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (search_bar),
                                        gtk_toggle_button_get_active (toggle_button));
 
+       if (priv->in_mode_change)
+               return;
+
        /* switch back to overview */
        if (!gtk_toggle_button_get_active (toggle_button))
                gs_shell_change_mode (shell, GS_SHELL_MODE_OVERVIEW, NULL, TRUE);