[evolution/express2: 1/9] Utility function to hide widgets when in Express mode

[Federico Mena Quintero <federico src gnome org>]

commit fe8eabe6d710b846ab9d2d95dcf60ed3de9e51ba
Author: Federico Mena Quintero <federico novell com>
Date:   Wed Apr 7 15:00:05 2010 -0500

    Utility function to hide widgets when in Express mode
    
    Express mode requires a reduced preferences dialog.  Many options in the
    current preferences dialog are pure, unadulterated crack.  So we need
    an easy way to hide them, to simplify the dialog and reduce its size.
    
    Here we add a function that takes a GConf key, reads a list of strings
    from that key, and hides the widgets whose names are those strings.
    This gives us an easy way to experiment with what widgets should
    be hidden in the preferences dialog, without needing to recompile
    all the time.
    
    Signed-off-by: Federico Mena Quintero <federico novell com>

 shell/e-shell-utils.c |   58 +++++++++++++++++++++++++++++++++++++++++++++++++
 shell/e-shell-utils.h |    4 +++
 2 files changed, 62 insertions(+), 0 deletions(-)
---
diff --git a/shell/e-shell-utils.c b/shell/e-shell-utils.c
index 1b80378..81380d4 100644
--- a/shell/e-shell-utils.c
+++ b/shell/e-shell-utils.c
@@ -346,3 +346,61 @@ e_shell_utils_import_uris (EShell *shell, gchar **uris, gboolean preview)
 
 	return g_strv_length (uris);
 }
+
+/**
+ * e_shell_hide_widgets_for_express_mode:
+ * @shell: an #EShell
+ * @builder: a #GtkBuilder
+ * @key_with_widget_names: The name of a GConf key; see below.
+ *
+ * If Evolution is running in Express mode (i.e. if the specified @shell is in
+ * Express mode), then this function will first read the specified GConf key.
+ * This key must contain a string list, and each element of that list must be
+ * the name of a widget present in @builder.  Those widgets will then get
+ * hidden.
+ *
+ * This can be used to simplify preference dialogs and such in an easy fashion, for use
+ * in Express mode.
+ *
+ * If Evolution is not running in Express mode, this function does nothing.
+ */
+void
+e_shell_hide_widgets_for_express_mode (EShell *shell,
+				       GtkBuilder *builder,
+				       const char *key_with_widget_names)
+{
+	GConfClient *client;
+	GSList *names;
+	GSList *l;
+
+	g_return_if_fail (E_IS_SHELL (shell));
+	g_return_if_fail (GTK_IS_BUILDER (builder));
+	g_return_if_fail (key_with_widget_names != NULL);
+	
+	if (!e_shell_get_express_mode (shell))
+		return;
+
+	client = e_shell_get_gconf_client (shell);
+
+	names = gconf_client_get_list (client, key_with_widget_names, GCONF_VALUE_STRING, NULL); /* NULL-GError */
+	if (!names)
+		return;
+
+	for (l = names; l; l = l->next) {
+		const char *name;
+		GObject *object;
+
+		name = l->data;
+		object = gtk_builder_get_object (builder, name);
+		if (!object || !GTK_IS_WIDGET (object)) {
+			g_error ("Object '%s' was not found in the builder file, or it is not a GtkWidget", name);
+			g_assert_not_reached ();
+		}
+
+		gtk_widget_hide (GTK_WIDGET (object));
+	}
+
+	g_slist_foreach (names, (GFunc) g_free, NULL);
+	g_slist_free (names);
+}
+
diff --git a/shell/e-shell-utils.h b/shell/e-shell-utils.h
index 428d49a..6e8b83c 100644
--- a/shell/e-shell-utils.h
+++ b/shell/e-shell-utils.h
@@ -50,6 +50,10 @@ guint		e_shell_utils_import_uris	(EShell *shell,
 						 gchar **uris,
 						 gboolean preview);
 
+void		e_shell_hide_widgets_for_express_mode (EShell *shell,
+						       GtkBuilder *builder,
+						       const char *key_with_widget_names);
+
 G_END_DECLS
 
 #endif /* E_SHELL_UTILS_H */