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lualoader: Pull autoboot handling out into menu.run()

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There's no reason for autoboot handling to be mixed in with menu processing.
It is a distinct process that should only be done once when entering the
menu system.

menu.process has been modified to take an initial keypress to process and to
only draw the screen initially if it's been invalidated. The keypress is
kind of a kludge, although it could be argued to be a potentially useful
kludge if there are other processes that may need to feed a keypress into
the menu system.
This commit is contained in:
Kyle Evans 2018-02-25 05:00:54 +00:00
parent 28384160a7
commit ca16d83fd4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=329948
1 changed files with 18 additions and 17 deletions
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35
stand/lua/menu.lua
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@ -38,6 +38,8 @@ local drawer = require("drawer")
local menu = {}
local screen_invalid = true
local function OnOff(str, b)
if b then
return str .. color.escapef(color.GREEN) .. "On" ..
@ -80,7 +82,7 @@ menu.handlers = {
end
end,
[core.MENU_SUBMENU] = function(_, entry)
-- recurse
screen_invalid = true
menu.process(entry.submenu)
end,
[core.MENU_RETURN] = function(_, entry)
@ -351,27 +353,23 @@ function menu.redraw(m)
screen.clear()
screen.defcursor()
menu.current_alias_table = drawer.drawscreen(m)
screen_invalid = false
end
function menu.process(m)
-- 'keypress' allows the caller to indicate that a key has been pressed that we
-- should process as our initial input.
function menu.process(m, keypress)
assert(m ~= nil)
-- Trigger a redraw if we've not been drawn
menu.redraw(m)
-- autoboot processing likely belongs better in menu.run, but we want
-- to draw the menu once before we do any autoboot prompting. We also
-- collect the alias table from the drawer, which generates the table
-- based on all of the 'alias' entries along with effective line numbers
-- that each entry is drawn at. This makes it cleaner to handle here,
-- for the time being.
local autoboot_key;
if m == menu.default then
autoboot_key = menu.autoboot()
-- Trigger a redraw if we've been invalidated. Otherwise, we assume
-- that this menu has already been drawn.
if screen_invalid then
menu.redraw(m)
end
while true do
local key = autoboot_key or io.getchar()
autoboot_key = nil
local key = keypress or io.getchar()
keypress = nil
-- Special key behaviors
if (key == core.KEY_BACKSPACE or key == core.KEY_DELETE) and
@ -417,7 +415,10 @@ function menu.run()
return
end
menu.process(menu.default)
menu.redraw(menu.default)
local autoboot_key = menu.autoboot()
menu.process(menu.default, autoboot_key)
screen.defcursor()
print("Exiting menu!")