CCGUI toggle

--[[

    ComputerCraft GUI
    Toggle button

--]]

ccgui = ccgui or {}

local ToggleButton = common.newClass(ccgui.Button, {
    -- Button state
    toggleState = false,
    -- Button label
    labelOn = "On",
    labelOff = "Off"
})
ccgui.ToggleButton = ToggleButton

function ToggleButton:init()
    ccgui.Button.init(self)

    self:updateLabel()

    self:on("buttonpress", self.togglePress, self)
end

function ToggleButton:isOn()
    return self.toggleState
end

function ToggleButton:isOff()
    return not self:isOn()
end

function ToggleButton:setState(state)
    self.toggleState = not not state
    self:updateLabel()
end

function ToggleButton:toggle()
    self:setState(self:isOff())
end

function ToggleButton:setOnLabel(labelOn)
    self.labelOn = labelOn or ""
    self:updateLabel()
end

function ToggleButton:setOffLabel(labelOff)
    self.labelOff = labelOff or ""
    self:updateLabel()
end

function ToggleButton:updateLabel()
    if self:isOn() then
        self:setText(self.labelOn)
    else
        self:setText(self.labelOff)
    end
end

function ToggleButton:togglePress()
    self:toggle()
    if self:isOn() then
        self:trigger("toggleon")
    else
        self:trigger("toggleoff")
    end
end