From d2668cb8a8b9f5ded7b36217408e688ebc49442a Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Wed, 20 Nov 2013 14:17:31 +1100
Subject: ui/ncurses: Add widget_select_drop_options

We want to be able to re-set the options in a select widget.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
---
 ui/ncurses/nc-widgets.c | 39 +++++++++++++++++++++++++++++++++++++++
 ui/ncurses/nc-widgets.h |  1 +
 2 files changed, 40 insertions(+)

(limited to 'ui')

diff --git a/ui/ncurses/nc-widgets.c b/ui/ncurses/nc-widgets.c
index 583e5ed..688722c 100644
--- a/ui/ncurses/nc-widgets.c
+++ b/ui/ncurses/nc-widgets.c
@@ -130,6 +130,7 @@ struct nc_widget_button {
 };
 
 static void widgetset_add_field(struct nc_widgetset *set, FIELD *field);
+static void widgetset_remove_field(struct nc_widgetset *set, FIELD *field);
 
 static bool process_key_nop(struct nc_widget *widget __attribute__((unused)),
 		FORM *form __attribute((unused)),
@@ -526,6 +527,27 @@ void widget_select_on_change(struct nc_widget_select *select,
 	select->on_change_arg = arg;
 }
 
+void widget_select_drop_options(struct nc_widget_select *select)
+{
+	struct nc_widgetset *set = select->set;
+	int i;
+
+	for (i = 0; i < select->n_options; i++) {
+		FIELD *field = select->options[i].field;
+		widgetset_remove_field(set, field);
+		if (field == set->cur_field)
+			set->cur_field = NULL;
+		free_field(select->options[i].field);
+	}
+
+	talloc_free(select->options);
+	select->options = NULL;
+	select->n_options = 0;
+	select->widget.height = 0;
+	select->widget.focus_y = 0;
+
+}
+
 static bool button_process_key(struct nc_widget *widget,
 		FORM *form __attribute__((unused)), int key)
 {
@@ -723,6 +745,23 @@ static void widgetset_add_field(struct nc_widgetset *set, FIELD *field)
 	set->fields[set->n_fields] = NULL;
 }
 
+static void widgetset_remove_field(struct nc_widgetset *set, FIELD *field)
+{
+	int i;
+
+	for (i = 0; i < set->n_fields; i++) {
+		if (set->fields[i] == field)
+			break;
+	}
+
+	if (i == set->n_fields)
+		return;
+
+	memmove(&set->fields[i], &set->fields[i+i],
+			(set->n_fields - i) * sizeof(set->fields[i]));
+	set->n_fields--;
+}
+
 #define DECLARE_BASEFN(type) \
 	struct nc_widget *widget_ ## type ## _base		\
 		(struct nc_widget_ ## type *w)			\
diff --git a/ui/ncurses/nc-widgets.h b/ui/ncurses/nc-widgets.h
index d598d5a..18af6d8 100644
--- a/ui/ncurses/nc-widgets.h
+++ b/ui/ncurses/nc-widgets.h
@@ -45,6 +45,7 @@ char *widget_textbox_get_value(struct nc_widget_textbox *textbox);
 bool widget_checkbox_get_value(struct nc_widget_checkbox *checkbox);
 int widget_select_get_value(struct nc_widget_select *select);
 int widget_select_height(struct nc_widget_select *select);
+void widget_select_drop_options(struct nc_widget_select *select);
 
 /* generic widget API */
 struct nc_widget *widget_textbox_base(struct nc_widget_textbox *textbox);
-- 
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