awesome-copycats/eminent/init.lua

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-- Effortless wmii-style dynamic tagging.
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-- Lucas de Vries <lucas@glacicle.org>
-- Licensed under the WTFPL version 2
--   * http://sam.zoy.org/wtfpl/COPYING
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-- Cut version
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-- Grab environment
local ipairs = ipairs
local awful  = require("awful")
local table  = table
local capi   = { screen = screen }

-- Eminent: Effortless wmii-style dynamic tagging
module("eminent")

-- Grab the original functions we're replacing
local deflayout = nil
local orig = {
    new     = awful.tag.new,
    taglist = awful.widget.taglist.new,
    filter  = awful.widget.taglist.filter.all,
}

-- Return tags with stuff on them, mark others hidden
function gettags(screen)
    local tags = {}
    for k, t in ipairs(capi.screen[screen]:tags()) do
        if t.selected or #t:clients() > 0 then
            awful.tag.setproperty(t, "hide", false)
            table.insert(tags, t)
        else
            awful.tag.setproperty(t, "hide", true)
        end
    end

    return tags
end

-- Pre-create tags
awful.tag.new = function (names, screen, layout)
    deflayout = layout and layout[1] or layout
    return orig.new(names, screen, layout)
end

-- Taglist label functions
awful.widget.taglist.filter.all = function (t, args)
    if t.selected or #t:clients() > 0 then
        return orig.filter(t, args)
    end
end