ui/ncurses: Add support for help screens

[petitboot] / ui / ncurses / nc-helpscreen.c

diff --git a/ui/ncurses/nc-helpscreen.c b/ui/ncurses/nc-helpscreen.c
new file mode 100644 (file)
index 0000000..d70a8ec
--- /dev/null
+++ b/ui/ncurses/nc-helpscreen.c
@@ -0,0 +1,69 @@
+/*
+ *  Copyright (C) 2013 IBM Corporation
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include <talloc/talloc.h>
+#include <types/types.h>
+#include <log/log.h>
+#include <util/util.h>
+
+#include "nc-cui.h"
+#include "nc-textscreen.h"
+#include "nc-helpscreen.h"
+
+struct help_screen {
+       struct text_screen text_scr;
+       struct nc_scr *return_scr;
+};
+
+struct nc_scr *help_screen_scr(struct help_screen *screen)
+{
+       return text_screen_scr(&screen->text_scr);
+}
+
+struct nc_scr *help_screen_return_scr(struct help_screen *screen)
+{
+       return screen->return_scr;
+}
+
+struct help_screen *help_screen_init(struct cui *cui,
+               struct nc_scr *current_scr,
+               const char *title_suffix, const char *text,
+               void (*on_exit)(struct cui *))
+{
+       struct help_screen *screen;
+       const char *title;
+
+       screen = talloc_zero(cui, struct help_screen);
+       screen->return_scr = current_scr;
+
+       title = "Petitboot help";
+       if (title_suffix)
+               title = talloc_asprintf(screen,
+                               "Petitboot help: %s", title_suffix);
+
+       text_screen_init(&screen->text_scr, cui, title, on_exit);
+       text_screen_set_text(&screen->text_scr, text);
+       text_screen_draw(&screen->text_scr);
+
+       return screen;
+}