taglist.lua

local awful = require("awful")
local gears = require("gears")
local beautiful = require("beautiful")
local xresources = require("beautiful.xresources")
local wibox = require("wibox")

local function colorize_text(text, color)
    return "<span foreground='" .. color .."'>" .. text .. "</span>"
end

local ntags = 9

local function taglist(s)
    -- Create textboxes and set their buttons
    local tag_text = {}

    for i = 1, ntags do
      table.insert(tag_text, wibox.widget.textbox())
      tag_text[i]:buttons(
        gears.table.join(
          -- Left click - Tag back and forth
          awful.button({ }, 1, function ()
              local current_tag = s.selected_tag
              local clicked_tag = s.tags[i]
              if clicked_tag == current_tag then
                awful.tag.history.restore()
              else
                clicked_tag:view_only()
              end
          end),
          -- Right click - Move focused client to tag
          awful.button({ }, 3, function ()
              local clicked_tag = s.tags[i]
              if client.focus then
                client.focus:move_to_tag(clicked_tag)
              end
          end)
      ))
      tag_text[i].font = beautiful.taglist_text_font
      -- So that glyphs of different width always take up the same space in the taglist
      tag_text[i].forced_width = dpi(25)
      tag_text[i].align = "center"
      tag_text[i].valign = "center"
    end

    local text_taglist = wibox.widget{
      tag_text[1],
      tag_text[2],
      tag_text[3],
      tag_text[4],
      tag_text[5],
      tag_text[6],
      tag_text[7],
      tag_text[8],
      tag_text[9],
      layout = wibox.layout.fixed.horizontal
    }

    text_taglist:buttons(
    gears.table.join(
      -- Middle click - Show clients in current tag
      awful.button({ }, 2, function ()
        awful.spawn.with_shell("rofi -show combi")
      end),
      -- Scroll - Cycle through tags
      awful.button({ }, 4, function ()
          awful.tag.viewprev()
      end),
      awful.button({ }, 5, function ()
          awful.tag.viewnext()
      end)
    ))

    -- Shorter names (eg. tf = text_focused) to save space
    local tf, tu, to, te, cf, cu, co, ce;
    -- Set fallback values if needed
    if beautiful.taglist_text_focused then
        tf = beautiful.taglist_text_focused
        tu = beautiful.taglist_text_urgent
        to = beautiful.taglist_text_occupied
        te = beautiful.taglist_text_empty
        cf = beautiful.taglist_text_color_focused
        cu = beautiful.taglist_text_color_urgent
        co = beautiful.taglist_text_color_occupied
        ce = beautiful.taglist_text_color_empty
    else
       -- Fallback values
        tf = {"1", "2", "3", "4", "5", "6", "7", "8", "9"}
        tu = tf
        to = tf
        te = tf

        local ff = beautiful.fg_focus
        local fu = beautiful.fg_urgent
        local fo = beautiful.fg_normal
        local fe = beautiful.fg_minimize

        cf = {ff, ff, ff, ff, ff, ff, ff, ff, ff, ff}
        cu = {fu, fu, fu, fu, fu, fu, fu, fu, fu, fu}
        co = {fo, fo, fo, fo, fo, fo, fo, fo, fo, fo}
        ce = {fe, fe, fe, fe, fe, fe, fe, fe, fe, fe}
    end

    local function update_widget()
      for i = 1, ntags do
        local tag_clients
        if s.tags[i] then
          tag_clients = s.tags[i]:clients()
        end
        if s.tags[i] and s.tags[i].selected then
            tag_text[i].markup = colorize_text(tf[i], cf[i])
        elseif s.tags[i] and s.tags[i].urgent then
            tag_text[i].markup = colorize_text(tu[i], cu[i])
        elseif tag_clients and #tag_clients > 0 then
            tag_text[i].markup = colorize_text(to[i], co[i])
        else
            tag_text[i].markup = colorize_text(te[i], ce[i])
        end
      end
    end

    client.connect_signal("unmanage", function(c)
        update_widget()
    end)
    client.connect_signal("untagged", function(c)
        update_widget()
    end)
    client.connect_signal("tagged", function(c)
        update_widget()
    end)
    client.connect_signal("screen", function(c)
        update_widget()
    end)
    awful.tag.attached_connect_signal(s, "property::selected", function ()
        update_widget()
    end)
    awful.tag.attached_connect_signal(s, "property::hide", function ()
        update_widget()
    end)
    awful.tag.attached_connect_signal(s, "property::activated", function ()
        update_widget()
    end)
    awful.tag.attached_connect_signal(s, "property::screen", function ()
        update_widget()
    end)
    awful.tag.attached_connect_signal(s, "property::index", function ()
        update_widget()
    end)
    awful.tag.attached_connect_signal(s, "property::urgent", function ()
        update_widget()
    end)

    return text_taglist
end

return taglist