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local QtCore = require 'qtcore'
local QtGui = require 'qtgui'

local Class = QtCore.Class('MyModel', QtCore.QAbstractTableModel) {}

function Class:__static_init()
	self:__addslot('timerHit()', self.timerHit)
end

function Class:__init()
	self.timer = QtCore.QTimer.new(self)
	self.timer:setInterval(1000)
	self.connect(self.timer, SIGNAL 'timeout()', self, SLOT 'timerHit()')
	self.timer:start()
end

function Class:parent()
	return QtCore.QModelIndex()
end

function Class:rowCount(parent)
	return 2
end

function Class:columnCount(parent)
	return 3
end

function Class:data(index, role)
	local row = index:row()
	local col = index:column()

	local function data()
		if role == QtCore.DisplayRole then
			if row == 0 and col == 0 then
				return QtCore.QTime.currentTime():toString()
			end
		end
	end

    local val = QtCore.QVariant()
    val:setValue(data())
    return val
end

function Class:timerHit()
    -- we identify the top left cell
    local topLeft = self:createIndex(0, 0)
    -- emit a signal to make the view reread identified data
    self:__emit('dataChanged', topLeft, topLeft)
end

return Class
