local P = {}
P.__index = P

function P:new(tagger)
	local widget = {}
	setmetatable(widget, self)


	widget.tagindicator = wibox.widget {
		homogeneous   = true,
		spacing       = beautiful.dpi(2),
		min_cols_size = 10,
		min_rows_size = 10,
		layout        = wibox.layout.grid
	}

	-- Calculate checkbox size limit
	local cbox_maxsize = beautiful.dpi(conf.bar_height)
	cbox_maxsize = cbox_maxsize - (2 * beautiful.dpi(conf.bar_margin))
	cbox_maxsize = cbox_maxsize - (tagger.rows - 1)*(beautiful.dpi(widget.tagindicator.spacing))

	-- Make each tag's checkmark
	widget.tagindicators = {}
	for r=1, tagger.rows do
		for c=1, tagger.cols do
			local t = wibox.widget {
				widget = wibox.widget.checkbox,

				bg = beautiful.color.transparent,
				checked = false,
				border_width = beautiful.dpi(2),
				paddings = beautiful.dpi(3),
				color = beautiful.color.bar.active,
				border_color = beautiful.color.bar.inactive,
			}

			widget.tagindicators[
				(c + (tagger.cols * (r - 1)))
			] = t

			if ((conf.bar_position == "bottom") or (conf.bar_position == "top")) then
				cbox_maxsize = cbox_maxsize / tagger.rows
			else
				cbox_maxsize = cbox_maxsize / tagger.cols
			end

			widget.tagindicator:add_widget_at(
				-- The constraint container is necessary here, without it
				-- the checkboxes will fill all the height that is available to them.
				wibox.container.constraint(
					widget.tagindicators[(c + (tagger.cols * (r - 1)))],
					"exact", cbox_maxsize, cbox_maxsize
				), r, c)
		end
	end

	-- Wrap everything with a background container
	widget.widget = wibox.widget {
		widget.tagindicator,
		layout = wibox.container.background
	}

	widget.widget:connect_signal("mouse::enter", function(result)
		widget.bg = beautiful.color.bar.hover_bg
	end)

	widget.widget:connect_signal("mouse::leave", function(result)
		widget.bg = beautiful.color.transparent
	end)

	return widget
end

return P