local comboOptions

local selectedOption

local selectedSize

local editMode

local activeField

local fieldMax

local function valueIncDec(event,value,min,max,step)

if editMode then

if event==EVT_PLUS_FIRST or event==EVT_PLUS_REPT then

if value<=max-step then

value=value+step

end

elseif event==EVT_MINUS_FIRST or event==EVT_MINUS_REPT then

if value>=min+step then

value=value-step

end

end

end

return value

end

local function fieldIncDec(event,value,max,force)

if editMode or force==true then

if event==EVT_PLUS_FIRST then

value=value+max

elseif event==EVT_MINUS_FIRST then

value=value+max+2

end

value=value%(max+1)

end

return value

end

local function getFieldFlags(p)

local flg = 0

if activeField==p then

flg=INVERS

if editMode then

flg=INVERS+BLINK

end

end

return flg

end

local function init()

fieldMax = 1

comboOptions = {"Triangle","Circle","Square"}

selectedOption = 0

activeField = 0

selectedSize = 0

end

local function run(event)

lcd.clear()

-- draw from the bottom up so we don't overwrite the combo box if open

lcd.drawText(19, 32, "Pick a size:", 0)

lcd.drawText(lcd.getLastPos() + 2, 32, selectedSize, getFieldFlags(1))

lcd.drawText(1, 1, "drawComboBox() telemetry example",0)

lcd.drawText(1, 17, "Pick an option:", 0)

lcd.drawCombobox(lcd.getLastPos() + 2, 15, 70, comboOptions, selectedOption, getFieldFlags(0))

if event == EVT_ENTER_BREAK then

editMode = not editMode

end

if editMode then

if activeField == 0 then

selectedOption = fieldIncDec(event, selectedOption, 2)

elseif activeField == 1 then

selectedSize = valueIncDec(event, selectedSize, 0, 10, 1)

end

else

activeField = fieldIncDec(event, activeField, fieldMax, true)

end

end

return{run=run, init=init}