xref: /freebsd/share/examples/bootforth/menu.4th (revision abd87254)
1\ Simple greeting screen, presenting basic options.
2\ XXX This is far too trivial - I don't have time now to think
3\ XXX about something more fancy... :-/
4
5: title
6	f_single
7	60 11 10 4 box
8	29 4 at-xy 15 fg 7 bg
9	." Welcome to BootFORTH!"
10	me
11;
12
13: menu
14	2 fg
15	20 7 at-xy
16	." 1.  Start FreeBSD /kernel."
17	20 8 at-xy
18	." 2.  Interact with BootFORTH."
19	20 9 at-xy
20	." 3.  Reboot."
21	me
22;
23
24: tkey	( d -- flag | char )
25	seconds +
26	begin 1 while
27	    dup seconds u< if
28		drop
29		-1
30		exit
31	    then
32	    key? if
33		drop
34		key
35		exit
36	    then
37	repeat
38;
39
40: prompt
41	14 fg
42	20 11 at-xy
43	." Enter your option (1,2,3): "
44	10 tkey
45	dup 32 = if
46	    drop key
47	then
48	dup 0< if
49	    drop 49
50	then
51	dup emit
52	me
53;
54
55: help_text
56	10 18 at-xy ." * Choose 1 if you just want to run FreeBSD."
57	10 19 at-xy ." * Choose 2 if you want to use bootloader facilities."
58	12 20 at-xy ." See '?' for available commands, and 'words' for"
59	12 21 at-xy ." complete list of Forth words."
60	10 22 at-xy ." * Choose 3 in order to warm boot your machine."
61;
62
63: (boot) 0 boot ;
64: (reboot) 0 reboot ;
65
66: main_menu
67	begin 1 while
68		clear
69		f_double
70		79 23 1 1 box
71		title
72		menu
73		help_text
74		prompt
75		cr cr cr
76		dup 49 = if
77			drop
78			1 25 at-xy cr
79			." Loading kernel. Please wait..." cr
80			['] (boot) catch abort" Error booting"
81		then
82		dup 50 = if
83			drop
84			1 25 at-xy cr
85			exit
86		then
87		dup 51 = if
88			drop
89			1 25 at-xy cr
90			['] (reboot) catch abort" Error rebooting"
91		then
92		20 12 at-xy
93		." Key " emit ."  is not a valid option!"
94		20 13 at-xy
95		." Press any key to continue..."
96		key drop
97	repeat
98;
99