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opus/sys/apis/ui/components/Checkbox.lua
2019-02-09 21:41:51 -05:00

68 lines
1.6 KiB
Lua

local class = require('class')
local UI = require('ui')
local colors = _G.colors
UI.Checkbox = class(UI.Window)
UI.Checkbox.defaults = {
UIElement = 'Checkbox',
nochoice = 'Select',
checkedIndicator = 'X',
leftMarker = '[',
rightMarker = ']',
value = false,
textColor = colors.white,
backgroundColor = colors.black,
backgroundFocusColor = colors.lightGray,
height = 1,
accelerators = {
space = 'checkbox_toggle',
mouse_click = 'checkbox_toggle',
}
}
function UI.Checkbox:setParent()
if not self.width and not self.ex then
self.width = (self.label and #self.label or 0) + 3
else
self.width = 3
end
UI.Window.setParent(self)
end
function UI.Checkbox:draw()
local bg = self.backgroundColor
if self.focused then
bg = self.backgroundFocusColor
end
if type(self.value) == 'string' then
self.value = nil -- TODO: fix form
end
local text = string.format('[%s]', not self.value and ' ' or self.checkedIndicator)
local x = 1
if self.label then
self:write(1, 1, self.label)
x = #self.label + 2
end
self:write(x, 1, text, bg)
self:write(x, 1, self.leftMarker, self.backgroundColor, self.textColor)
self:write(x + 1, 1, not self.value and ' ' or self.checkedIndicator, bg)
self:write(x + 2, 1, self.rightMarker, self.backgroundColor, self.textColor)
end
function UI.Checkbox:focus()
self:draw()
end
function UI.Checkbox:reset()
self.value = false
end
function UI.Checkbox:eventHandler(event)
if event.type == 'checkbox_toggle' then
self.value = not self.value
self:emit({ type = 'checkbox_change', checked = self.value, element = self })
self:draw()
return true
end
end