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-- license:BSD-3-Clause
-- copyright-holders:Vas Crabb
local exports = {
name = 'commonui',
version = '0.0.1',
description = 'Common plugin UI helpers',
license = 'BSD-3-Clause',
author = { name = 'Vas Crabb' } }
local commonui = exports
function commonui.input_selection_menu(action, title, filter)
menu = { }
local choices
local index_first_choice
local index_cancel
local function populate_choices()
local ioport = manager.machine.ioport
local function compare(a, b)
if a.device.tag < b.device.tag then
return true
elseif a.device.tag > b.device.tag then
return false
end
groupa = ioport:type_group(a.type, a.player)
groupb = ioport:type_group(b.type, b.player)
if groupa < groupb then
return true
elseif groupa > groupb then
return false
elseif a.type < b.type then
return true
elseif a.type > b.type then
return false
else
return a.name < b.name
end
end
choices = { }
for tag, port in pairs(manager.machine.ioport.ports) do
for name, field in pairs(port.fields) do
if (not filter) or filter(field) then
table.insert(choices, field)
end
end
end
table.sort(choices, compare)
local index = 1
local prev
while index <= #choices do
local current = choices[index]
if (not prev) or (prev.device.tag ~= current.device.tag) then
table.insert(choices, index, false)
index = index + 2
else
index = index + 1
end
prev = current
end
end
function menu:populate(initial_selection)
if not choices then
populate_choices()
end
local items = { }
if title then
table.insert(items, { title, '', 'off' })
table.insert(items, { '---', '', '' })
end
index_first_choice = #items + 1
local selection = index_first_choice
for index, field in ipairs(choices) do
if field then
table.insert(items, { field.name, '', '' })
if initial_selection and (field.port.tag == initial_selection.port.tag) and (field.mask == initial_selection.mask) and (field.type == initial_selection.type) then
selection = #items
initial_selection = nil
end
else
local device = choices[index + 1].device
if device.owner then
table.insert(items, { string.format(_p('plugin-commonui', '%s [root%s]'), device.name, device.tag), '', 'heading' })
else
table.insert(items, { string.format(_p('plugin-commonui', '[root%s]'), device.tag), '', 'heading' })
end
end
end
table.insert(items, { '---', '', '' })
table.insert(items, { _p('plugin-commonui', 'Cancel'), '', '' })
index_cancel = #items
return items, selection
end
function menu:handle(index, event)
local selection
if (event == 'back') or ((index == index_cancel) and (event == 'select')) then
action(nil)
return true
elseif event == 'select' then
local field = choices[index - index_first_choice + 1]
if field then
action(field)
return true
end
elseif event == 'prevgroup' then
local found_break = false
while (index > index_first_choice) and (not selection) do
index = index - 1
if not choices[index - index_first_choice + 1] then
if found_break then
selection = index + 1
else
found_break = true
end
end
end
elseif event == 'nextgroup' then
while ((index - index_first_choice + 2) < #choices) and (not selection) do
index = index + 1
if not choices[index - index_first_choice + 1] then
selection = index + 1
end
end
end
return false, selection
end
return menu
end
function commonui.switch_polling_helper(starting_sequence)
helper = { }
local machine = manager.machine
local cancel = machine.ioport:token_to_input_type('UI_CANCEL')
local cancel_prompt = manager.ui:get_general_input_setting(cancel)
local input = machine.input
local uiinput = machine.uiinput
local poller = input:switch_sequence_poller()
local modified_ticks = 0
if starting_sequence then
poller:start(starting_sequence)
else
poller:start()
end
function helper:overlay(items, selection, flags)
if flags then
flags = flags .. " nokeys"
else
flags = "nokeys"
end
return items, selection, flags
end
function helper:poll()
-- prevent race condition between uiinput:pressed() and poll()
if (modified_ticks == 0) and poller.modified then
modified_ticks = emu.osd_ticks()
end
if uiinput:pressed(cancel) then
-- UI_CANCEL pressed, abort
machine:popmessage()
uiinput:reset()
if (not poller.modified) or (modified_ticks == emu.osd_ticks()) then
-- cancelled immediately
self.sequence = nil -- TODO: communicate this better?
return true
else
-- entered something before cancelling
self.sequence = nil
return true
end
elseif poller:poll() then
uiinput:reset()
if poller.valid then
-- valid sequence entered
machine:popmessage()
self.sequence = poller.sequence
return true
else
-- invalid sequence entered
machine:popmessage(_p('plugin-commonui', 'Invalid combination entered'))
self.sequence = nil
return true
end
else
machine:popmessage(string.format(
_p('plugin-commonui', 'Enter combination or press %s to cancel\n%s'),
cancel_prompt,
input:seq_name(poller.sequence)))
return false
end
end
return helper
end
return exports
|
