Save active view on the todo panel

Add a configuration option appearance.todoview and use it to
automatically save the currently active todo panel view and restore it
when restarting calcurse.

Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

src/calcurse.h

@@ -1072,6 +1072,8 @@ void ui_todo_view_note(void);
 void ui_todo_edit_note(void);
 void ui_todo_view_prev(void);
 void ui_todo_view_next(void);
+int ui_todo_get_view(void);
+void ui_todo_set_view(int);
 
 /* utf8.c */
 int utf8_width(char *);

src/config.c

@@ -59,6 +59,8 @@ static int config_parse_str(char *, const char *);
 static int config_serialize_str(char **, const char *);
 static int config_parse_calendar_view(void *, const char *);
 static int config_serialize_calendar_view(char **, void *);
+static int config_parse_todo_view(void *, const char *);
+static int config_serialize_todo_view(char **, void *);
 static int config_parse_default_panel(void *, const char *);
 static int config_serialize_default_panel(char **, void *);
 static int config_parse_first_day_of_week(void *, const char *);
@@ -91,6 +93,7 @@ static const struct confvar confmap[] = {
 	{"appearance.notifybar", CONFIG_HANDLER_BOOL(nbar.show)},
 	{"appearance.sidebarwidth", config_parse_sidebar_width, config_serialize_sidebar_width, NULL},
 	{"appearance.theme", config_parse_color_theme, config_serialize_color_theme, NULL},
+	{"appearance.todoview", config_parse_todo_view, config_serialize_todo_view, NULL},
 	{"daemon.enable", CONFIG_HANDLER_BOOL(dmon.enable)},
 	{"daemon.log", CONFIG_HANDLER_BOOL(dmon.log)},
 	{"format.inputdate", config_parse_input_datefmt, config_serialize_input_datefmt, NULL},
@@ -206,6 +209,18 @@ static int config_parse_calendar_view(void *dummy, const char *val)
 	return 1;
 }
 
+static int config_parse_todo_view(void *dummy, const char *val)
+{
+	if (!strcmp(val, "show-completed"))
+		ui_todo_set_view(TODO_SHOW_COMPLETED_VIEW);
+	else if (!strcmp(val, "hide-completed"))
+		ui_todo_set_view(TODO_HIDE_COMPLETED_VIEW);
+	else
+		return 0;
+
+	return 1;
+}
+
 static int config_parse_default_panel(void *dummy, const char *val)
 {
 	if (!strcmp(val, "calendar"))
@@ -378,6 +393,16 @@ static int config_serialize_calendar_view(char **buf, void *dummy)
 	return 1;
 }
 
+static int config_serialize_todo_view(char **buf, void *dummy)
+{
+	if (ui_todo_get_view() == TODO_SHOW_COMPLETED_VIEW)
+		*buf = mem_strdup("show-completed");
+	else
+		*buf = mem_strdup("hide-completed");
+
+	return 1;
+}
+
 static int config_serialize_default_panel(char **buf, void *dummy)
 {
 	if (conf.default_panel == CAL)

src/ui-todo.c

@@ -327,3 +327,14 @@ void ui_todo_view_prev(void)
 	ui_todo_view--;
 	ui_todo_load_items();
 }
+
+void ui_todo_set_view(int view)
+{
+	ui_todo_view = (view < 0 || view >= TODO_VIEWS) ?
+		       TODO_SHOW_COMPLETED_VIEW : view;
+}
+
+int ui_todo_get_view(void)
+{
+	return (int)ui_todo_view;
+}