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authorJeremy Kerr <jk@ozlabs.org>2013-12-10 11:48:25 +0800
committerJeremy Kerr <jk@ozlabs.org>2014-01-31 08:46:34 +0800
commit140f5b13c7513b2d594457cc8d7d0cb1a7d844a4 (patch)
tree963071659ac423bf8c7f4da9a67460556d228fc2 /ui/ncurses
parent702f9c313dea66817cf05196d84cd07889e80c51 (diff)
downloadtalos-petitboot-140f5b13c7513b2d594457cc8d7d0cb1a7d844a4.tar.gz
talos-petitboot-140f5b13c7513b2d594457cc8d7d0cb1a7d844a4.zip
ui/ncurses: Add support for help screens
Add a textscreen-based help screen system, triggered from the cui module's cui_show_help() Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'ui/ncurses')
-rw-r--r--ui/ncurses/Makefile.am2
-rw-r--r--ui/ncurses/nc-cui.c23
-rw-r--r--ui/ncurses/nc-cui.h2
-rw-r--r--ui/ncurses/nc-helpscreen.c69
-rw-r--r--ui/ncurses/nc-helpscreen.h31
5 files changed, 127 insertions, 0 deletions
diff --git a/ui/ncurses/Makefile.am b/ui/ncurses/Makefile.am
index c03bdb7..8160298 100644
--- a/ui/ncurses/Makefile.am
+++ b/ui/ncurses/Makefile.am
@@ -35,6 +35,8 @@ libpbnc_la_SOURCES = \
nc-cui.h \
nc-boot-editor.c \
nc-boot-editor.h \
+ nc-helpscreen.c \
+ nc-helpscreen.h \
nc-menu.c \
nc-menu.h \
nc-scr.c \
diff --git a/ui/ncurses/nc-cui.c b/ui/ncurses/nc-cui.c
index e342273..650e903 100644
--- a/ui/ncurses/nc-cui.c
+++ b/ui/ncurses/nc-cui.c
@@ -38,6 +38,7 @@
#include "nc-boot-editor.h"
#include "nc-config.h"
#include "nc-sysinfo.h"
+#include "nc-helpscreen.h"
static void cui_start(void)
{
@@ -246,6 +247,28 @@ void cui_show_config(struct cui *cui)
cui_set_current(cui, config_screen_scr(cui->config_screen));
}
+static void cui_help_exit(struct cui *cui)
+{
+ cui_set_current(cui, help_screen_return_scr(cui->help_screen));
+ talloc_free(cui->help_screen);
+ cui->help_screen = NULL;
+}
+
+void cui_show_help(struct cui *cui, const char *title, const char *text)
+{
+ if (!cui->current)
+ return;
+
+ if (cui->help_screen)
+ return;
+
+ cui->help_screen = help_screen_init(cui, cui->current,
+ title, text, cui_help_exit);
+
+ if (cui->help_screen)
+ cui_set_current(cui, help_screen_scr(cui->help_screen));
+}
+
/**
* cui_set_current - Set the currently active screen and redraw it.
*/
diff --git a/ui/ncurses/nc-cui.h b/ui/ncurses/nc-cui.h
index 90af361..e59a6b6 100644
--- a/ui/ncurses/nc-cui.h
+++ b/ui/ncurses/nc-cui.h
@@ -59,6 +59,7 @@ struct cui {
struct config *config;
struct config_screen *config_screen;
struct boot_editor *boot_editor;
+ struct help_screen *help_screen;
struct pjs *pjs;
void *platform_info;
unsigned int default_item;
@@ -74,6 +75,7 @@ void cui_item_edit(struct pmenu_item *item);
void cui_item_new(struct pmenu *menu);
void cui_show_sysinfo(struct cui *cui);
void cui_show_config(struct cui *cui);
+void cui_show_help(struct cui *cui, const char *title, const char *text);
int cui_send_config(struct cui *cui, struct config *config);
/* convenience routines */
diff --git a/ui/ncurses/nc-helpscreen.c b/ui/ncurses/nc-helpscreen.c
new file mode 100644
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;
+}
diff --git a/ui/ncurses/nc-helpscreen.h b/ui/ncurses/nc-helpscreen.h
new file mode 100644
index 0000000..f104411
--- /dev/null
+++ b/ui/ncurses/nc-helpscreen.h
@@ -0,0 +1,31 @@
+/*
+ * 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
+ */
+
+#ifndef _NC_HELPSCREEN_H
+#define _NC_HELPSCREEN_H
+
+struct help_screen;
+
+struct nc_scr *help_screen_scr(struct help_screen *screen);
+struct nc_scr *help_screen_return_scr(struct help_screen *screen);
+
+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 *));
+
+#endif /* defined _NC_HELPSCREEN_H */
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