awesomewm-machina/methods.lua

--------------------------------------------------------- dependencies  -- ;

local grect = require("gears.geometry").rectangle
local tabs = require("machina.tabs")
local geoms = require("machina.geoms")
local helpers = require("machina.helpers")

local get_client_ix = helpers.get_client_ix
local getlowest = helpers.getlowest
local compare = helpers.compare
local tablelength = helpers.tablelength
local set_contains = helpers.set_contains
local clear_tabbar = helpers.clear_tabbar

---------------------------------------------------------------- locals -- ;

local global_client_table = {}
local global_tab_table = {}

function get_global_clients()
   return global_client_table
end

function update_global_clients(c)
   global_client_table[c.window] = c
end

function log(m,context)
   context = context or ""
   naughty.notify({text=inspect(m) .. " :" .. context })
end

local function clear_tabbar(c, position)
   if not c then return end
   local position = position or "bottom"
   local titlebar = awful.titlebar(c, {size=3, position=position})
   titlebar:setup{
      layout=wibox.layout.flex.horizontal, nil
   }
end --|clears bottom tabbar


------------------------------------------------------------- go_edge() -- ;

local function go_edge(direction, regions, current_box)
   test_box = true
   edge_pos = nil

   while test_box do
      test_box = grect.get_in_direction(direction, regions, current_box)

      if test_box then
         current_box = regions[test_box]
         edge_pos = test_box
      end
   end

   return edge_pos
end --|
    --|figures out the beginning of each row on the layout.

----------------------------------------------------------- always_on() -- ;

local function toggle_always_on()
   always_on = nil or client.focus.always_on
   client.focus.always_on = not always_on
end

--------------------------------------------------------- screen_info() -- ;

local function screen_info(s)
   local s = s or awful.screen.focused()
   local focused_screen = s or nil
   local workarea = s.workarea or nil
   local selected_tag = s.selected_tag or nil
   local layout = awful.layout.get(s) or nil
   local focused_client = client.focus or nil

   return focused_screen,
      workarea,
      selected_tag,
      layout,
      focused_client
end

--------------------------------------------------------- get_regions() -- ;

local function get_regions(s)
   local s = s or awful.screen.focused()
   local focused_screen,
         workarea,
         selected_tag,
         layout,
         focused_client = screen_info(s)

   local machi_fn = nil
   local machi_data = nil
   local machi_regions = nil

   if layout.machi_get_regions then
      machi_fn = layout.machi_get_regions
      machi_data = machi_fn(workarea, selected_tag)
      machi_regions = machi_data
   end --|version 1

   if layout.machi_get_instance_data then
      machi_fn = layout.machi_get_instance_data
      machi_geom = layout.machi_set_geometry
      machi_data = {machi_fn(screen[focused_screen], selected_tag)}
      machi_regions = machi_data[3]
   
      for i=#machi_regions,1,-1 do
         if machi_regions[i].habitable == false  then
            table.remove(machi_regions, i)
         end
      end --|remove unhabitable regions

      table.sort(
         machi_regions,
         function (a1, a2)
            return a1.id > a2.id
         end
      ) --|v2 returns unordered region list and needs sorting.
   end --|version 2/NG

   return machi_regions, machi_fn
end

----------------------------------------------------------- get_edges() -- ;

local function move_to(location)
   return function()
      local useless_gap = nil
      local regions = get_regions()
      local edges = {x={},y={}}

      for i,region in ipairs(regions) do
         edges.x[region.x] = region.x + region.width
         edges.y[region.y] = region.y + region.height
      end
      
      useless_gap = getlowest(edges.x)
      client.focus:geometry(geoms[location](useless_gap))
      return
   end
end

------------------------------------------------------- get_client_info -- ;

local function get_client_info(c)
   local active_region = nil
   local outofboundary = nil
   local proximity = {}
   local regions = get_regions()
   local source_client = c or client.focus or nil
   

   if not regions then return {} end
   --|flow control

   if not source_client then return {} end
   --|flow control

   if source_client.x < 0 or source_client.y < 0 
      then outofboundary = true 
   end --| negative coordinates always mean out of boundary


   for i, a in ipairs(regions) do
      local px = a.x - source_client.x
      local py = a.y - source_client.y

      if px == 0 then px = 1 end
      if py == 0 then py = 1 end

      proximity[i] = {
         index = i,
         v = math.abs(px * py)
      } --│keep track of proximity in case nothing matches in
        --│this block.

   end --│figures out focused client's region under normal
       --│circumstances.

   if not active_region then
      table.sort(proximity, compare)       --| sort to get the smallest area
      active_region = proximity[1].index   --| first item should be the right choice

      if source_client.floating then
         if regions[active_region].width - source_client.width ~= 0
            or regions[active_region].height - source_client.height ~= 0
         then
            outofboundary = true
         end
      end --|when client is not the same size as the located
          --|region, we should still consider this as out of
          --|boundary
   end --|user is probably executing get_active_regions on a
       --|floating window.

   if not active_region then
      active_region = 1
   end --|at this point, we are out of options, set the index
       --|to one and hope for the best.


   -- refactor
   if active_region and source_client.width > regions[active_region].width then
      outofboundary = true
   end --|machi sometimes could auto expand the client, consider
       --|that as out of boundary.

   if active_region and source_client.height > regions[active_region].height then
      outofboundary = true
   end --|machi sometimes could auto expand the client, consider
       --|that as out of boundary.
   -- refactor


   return {
      active_region = active_region,
      regions = regions,
      outofboundary = outofboundary
   }
end

----------------------------------------- focus_by_direction(direction) -- ;

local function focus_by_direction(direction)
   return function()
      if not client.focus then return false end
      awful.client.focus.global_bydirection(direction, nil,true)
      client.focus:raise()
   end
end

------------------------------------------------------ region_tablist() -- ;

local function test_tablist(region_ix, c, s)
   local source_client = c or client.focus or nil
   local source_screen = (source_client and source_client.screen) or s or awful.screen.focused()
   local active_region = region_ix or nil
   local regions = get_regions(source_screen)
   local all_client = get_global_clients()
   local region_clients = {}

   if not active_region then
      for i, a in ipairs(regions) do
         if a.x <= source_client.x and source_client.x < a.x + a.width and
            a.y <= source_client.y and source_client.y < a.y + a.height
         then
            active_region = i
         end
      end
   end --|if no region index provided, find the region of the
       --|focused_client.


   
   for i, cc in pairs(all_client) do
      if cc.region == active_region and regions[active_region].x == cc.x 
         and regions[active_region].y == cc.y
         then
         region_clients[#region_clients + 1] = cc
      end
   end

    return region_clients

end


local function region_tablist(region_ix, c)
   local focused_screen = awful.screen.focused()
   local workarea = awful.screen.focused().workarea
   local selected_tag = awful.screen.focused().selected_tag
   local tablist = {}
   local active_region = region_ix or nil
   local source_client = c or client.focus or nil

   local regions = get_regions()
   
   if not regions then return {} end
   --|flow control


   ------------------ CHECK FOR SIDE EFFECTS
   -- if not source_client or source_client.floating then return {} end
   --|flow control

   if not active_region then
      for i, a in ipairs(regions) do
         if a.x <= source_client.x and source_client.x < a.x + a.width and
            a.y <= source_client.y and source_client.y < a.y + a.height
         then
            active_region = i
         end
      end
   end --|if no region index provided, find the region of the
       --|focused_client.

   for _, tc in ipairs(screen[focused_screen].tiled_clients) do
      if not (tc.floating or tc.immobilized) then
         if regions[active_region].x <= tc.x + tc.width + tc.border_width * 2 and
            tc.x <= regions[active_region].x + regions[active_region].width  and
            regions[active_region].y <= tc.y + tc.height + tc.border_width * 2  and
            tc.y <= regions[active_region].y + regions[active_region].height 
         then
            tablist[#tablist + 1] = tc
         end
      end
   end --|tablist inside the active region

    return tablist
end
--|tablist order is adjusted by awesomewm and it will
--|always have the focused client as the first item.
--|list of all the clients within a region.

----------------------------------------------------- expand_horizontal -- ;

local function expand_horizontal(direction)
   return function ()
      local c = client.focus
      local geom = nil

      if c.maximized_horizontal then 
         c.maximized_horizontal = false
      end --|reset toggle maximized state

      if c.direction == direction then
         c.direction = nil
         c.maximized_horizontal = false
         c.maximized_vertical = false
         draw_tabbar(c.region)
         resize_region(c.region, c:geometry(), true)
         return
      end --|reset toggle when sending same shortcut
          --|consequitively

      local stuff = get_client_info()
      local target = grect.get_in_direction(direction, stuff.regions, client.focus:geometry())
      
      if not target and direction ~= "center" then return end -- flow control

      --▨▨▨
      if direction == "right" then
         tobe = {
            x=c.x,
            width=math.abs(stuff.regions[target].x + stuff.regions[target].width - c.x - 4),
            height=c.height,
            y=c.y
         }

         c.direction = direction
         c.maximized_horizontal = true
         c.maximixed_vertical = false

         -- if not c.floating then
         --    awful.layout.get(focused_screen).machi_zort(c, tobe)
         --    instance_data = awful.layout.get(
         --       awful.screen.focused())
         --       .machi_get_instance_data(awful.screen.focused(), awful.screen.selected_tag)
         --       naughty.notify({text=inspect(instance_data)})

         --    instance_data[c] = {
         --       lu=0, rd=0
         --    }
         -- end
   
         gears.timer.delayed_call(function (c) 
            c:geometry(tobe)
            draw_tabbar(c.region)
            resize_region(c.region, tobe, {horizontal=true,vertical=false,direction=direction})
            -- clear_tabbar(c)
         end,c)
         return
      end

      --▨▨▨
      if direction == "left" then
         tobe = {
            x=stuff.regions[target].x,
            width=c.x + c.width - stuff.regions[target].x,
            height=c.height,
            y=c.y
         }
         c.direction = direction
         c.maximized_horizontal = true
         c.maximixed_vertical = false

         gears.timer.delayed_call(function (c) 
            client.focus:geometry(tobe)
            draw_tabbar(c.region)
            clear_tabbar(c)
         end,c)
         return
      end
     
      --▨▨▨
      if direction == "center" then
         c.maximized = false
         c.maximixed_vertical = false
         fixedchoice = geoms.clients[c.class] or nil

         if c.floating then
            c.maximized_horizontal = false
            geom = geoms.crt43()
         end

         if not c.floating then
            c.direction = "center"
            c.maximized_horizontal = true
            geom = geoms.p1080()
         end

         if fixedchoice then
            c.direction = "center"
            c.maximized_horizontal = true
            geom = fixedchoice()
         end

         c:geometry(geom)
         awful.placement.centered(c)

         gears.timer.delayed_call(function (c)
            c:raise()
            client.emit_signal("tabbar_draw", c.region)
            clear_tabbar(c)
         end,c) --|give it time in case maximize_horizontal is
              --|adjusted before centering
         return
      end
   end
end
--|c.direction is used to create a fake toggling effect.
--|tiled clients require an internal maximized property to
--|be set, otherwise they won't budge.

--|change the logic handling for the center layout to use
--|fixedchoices

----------------------------------------------------- expand_vertical() -- ;

local function expand_vertical()
   local c = client.focus
   local going = "down"

   if c.maximized_vertical then 
      c.maximized_vertical = false
      return
   end --|reset toggle maximized state

   local stuff = get_client_info()
   local target = grect.get_in_direction("down", stuff.regions, client.focus:geometry())
   
   if target and stuff.regions[target].x ~= c.x then
      return
   end --|flow control
       --|ensure we are operating in the same X axis,
       --|vertical directions jump around

   if not target then
      going = "up"
      target = grect.get_in_direction("up", stuff.regions, client.focus:geometry())
   end --|flow control
       --|try reverse direction

   if not target then return end
   --|flow control
   
   if going == "down" then
      tobe = {
         y=c.y,
         x=c.x,
         width=c.width,
         height=stuff.regions[target].y + stuff.regions[target].height - c.y
      }
   end

   if going == "up" then
      tobe = {
         x=c.x,
         width=c.width,
         y=stuff.regions[target].y,
         height= c.height + c.y - stuff.regions[target].y
      }
   end

   c.maximized_vertical = true

   gears.timer.delayed_call(function () 
      client.focus:geometry(tobe)   
      client.focus:raise()
   end)

   return
end

------------------------------------------------------------- shuffle() -- ;

local function shuffle(direction)
   return function()
      local tablist = get_tiled_clients()
      --|this is the ordered list
      -- log(client.focus.region)

      if not #tablist then return end
      --▨ flow control

      if not client.focus then return end
      --▨ flow control

      focused_client_ix = get_client_ix(client.focus.window, tablist)
      --|find the index position of the focused client

      if not focused_client_ix then return end
      --▨ flow control

      prev_ix = focused_client_ix - 1
      next_ix = focused_client_ix + 1
      --|calculate target indexes

      if next_ix > #tablist then next_ix = 1 end
      if prev_ix < 1 then prev_ix = #tablist end
      --|check for validity of the index

      if direction == "backward" then
         tablist[prev_ix]:emit_signal("request::activate", "mouse_enter",{raise = true})
         return
      end

      if direction == "forward" then
         tablist[next_ix]:emit_signal("request::activate", "mouse_enter",{raise = true})
         return
      end
   end
end

---------------------------------------------------------- get_swapee() -- ;

local function get_swapee(target_region_ix)
   local regions = get_regions()
   --| all regions

   local cltbl = awful.client.visible(client.focus.screen, true)
   --| all visible clients on all regions
   --| but we don't know which regions they are at
   
   local swap_map = {}

   for a,region in ipairs(regions) do
      for i,c in ipairs(cltbl) do
         if c.x == region.x and c.y == region.y then
            swap_map[a] = i
            break --|avoid stacked regions
         end
      end
   end --|iterate over regions, and match the client objects in
       --|each region.

   local swapee = cltbl[swap_map[target_region_ix]]
   return swapee
end
--[[
   returns the client object at a specific region. we can
   also use signals to keep track of this but we are trying
   to avoid exessive use of signals.
--]]

---------------------------------------------------------- my_shifter() -- ;

local function reset_client_meta(c)
   c.maximized = false
   c.maximized_horizontal = false
   c.maximized_vertical = false
   c.direction = nil
   return c
end

local function my_shifter(direction, swap)
   return function()

      if direction == "left" then direction = "backward" end
      if direction == "right" then direction = "forward" end

      local c = client.focus
      local stuff = get_client_info()
      local client_region_ix = stuff.active_region
      local source_region
      local target_region_ix
      local target_region

      c = reset_client_meta(c)
      --|clean artifacts in case client was expanded.
   
      if direction == "backward" then
         if (client_region_ix + 1) > #stuff.regions then 
            target_region_ix = 1
         else
            target_region_ix = client_region_ix+1
         end
      end --|go next region by index, 
          --|if not reset to first

      if direction == "forward" then
         if (client_region_ix - 1) < 1 then 
            target_region_ix = #stuff.regions
         else
            target_region_ix = client_region_ix - 1
         end
      end --|go previous region by index,
          --|if not reset to last

      if stuff.outofboundary then
         target_region_ix = client_region_ix
      end --|ignore previous when out of boundary
          --|probably floating or expanded client
          --|push inside the boundary instead

      source_region = stuff.regions[client_region_ix]
      target_region = stuff.regions[target_region_ix]
      --|target regions geometry

      local swapee = get_swapee(target_region_ix)
      --|visible client at the target region

      c:geometry(target_region)
      --|relocate client

      c.region = target_region_ix
      --|update client property

      if not swap then c:raise() end
      --|raise

      if swap and swapee then
         swapee:geometry(source_region)
         swapee:emit_signal("request::activate", "mouse_enter",{raise = true})
      end --|perform swap

      draw_tabbar(target_region_ix)
      resize_region(target_region_ix, target_region, true)
      --|update tabs in target region
      
      draw_tabbar(client_region_ix)
      resize_region(client_region_ix, source_region, true)
      --|update tabs in source region
   end   
end

---------------------------------------------------- shift_by_direction -- ;

local function shift_by_direction(direction, swap)
   return function ()

      local c = client.focus
      local stuff = get_client_info()
      local target_region_ix = nil
      local client_region_ix = stuff.active_region

      if stuff.outofboundary == true then
         return my_shifter(direction)()
      end --|my_shifter handles this situation better.

      local candidate = {
         up = grect.get_in_direction("up", stuff.regions, client.focus:geometry()),
         down = grect.get_in_direction("down", stuff.regions, client.focus:geometry()),
         left = grect.get_in_direction("left", stuff.regions, client.focus:geometry()),
         right = grect.get_in_direction("right", stuff.regions, client.focus:geometry())
      } --|awesomewm magic function to find out what lies
        --|ahead and beyond based on the direction

      target_region_ix = candidate[direction]
      --|try to get a candidate region if possible

      if not target_region_ix then
         if direction == "right" then try = "left" end
         if direction == "left" then try = "right" end
         if direction == "down" then try = "up" end
         if direction == "up" then try = "down" end

         target_region_ix = go_edge(try, stuff.regions, client.focus:geometry())
      end --|go the beginning or the end if there is no
          --|candidate
      
      source_region = stuff.regions[client_region_ix]
      target_region = stuff.regions[target_region_ix]

      local swapee = get_swapee(target_region_ix)
      --|visible client at the target region

      c:geometry(target_region)
      --|relocate client

      c.region = target_region_ix
      --|update client property

      if not swap then c:raise() end
      --|raise

      if swap and swapee then
         swapee:geometry(source_region)
         swapee:emit_signal("request::activate", "mouse_enter",{raise = true})
      end --|perform swap

      draw_tabbar(target_region_ix)
      resize_region(target_region_ix, target_region, true)
      --|update tabs in target region
      
      draw_tabbar(client_region_ix)
      resize_region(client_region_ix, source_region, true)
      --|update tabs in source region
   end
end

----------------------------------------------------- get_tiled_clients -- ;

function get_tiled_clients(region_ix, s)
   local s = s or awful.screen.focused()
   local tablist = test_tablist(region_ix, c, s)
   local all_clients = get_global_clients()
   local tiled_clients = {}
   local myorder = {}
   local window_ix = {}

   for i,t in ipairs(tablist) do
      window_ix[t.window] = true
   end

   local po = 1
   for i,c in pairs(all_clients) do
      if not c.floating and window_ix[c.window] then
            tiled_clients[po] = c
         po = po + 1
      end
   end

   return tiled_clients
end
--[[+]
   global_client_index stores the ordered list of all clients
   available and it is used as a blueprint to keep the order
   of our tablist intact, without this, tabbars would go out
   of order when user focuses via shortcuts (run_or_raise). ]]

-------------------------------------------------------- draw_tabbar() -- ;



-- client.connect_signal("property::name", function (c)
--    -- todo: need to update the other clients in the region here as well
      -- this may not even be worth it as the client names kind of pollute the
      -- tabs a lot making it harder to distinguish what is what.

--    if widget_ix[c.window] then
--       for i, p in pairs(widget_ix[c.window]) do
--          if p.focused then
--             widget = widget_ix[c.window][i]:get_children_by_id(c.window)[1]
--             -- naughty.notify({preset = naughty.config.presets.critical, text=inspect(widget)})
--             widget.widget.markup = c.name
--          end
--       end
--    end
-- end)


client.connect_signal("focus", function (c)
   if global_tab_table[c.window] then
      for i, p in pairs(global_tab_table[c.window]) do
         if p.focused then
            local widget = global_tab_table[c.window][i]:get_children_by_id(c.window)[1]
            widget.bg = "#43417a"
         end
      end
   end
end)

client.connect_signal("unfocus", function (c)
   if global_tab_table[c.window] then
      for i, p in pairs(global_tab_table[c.window]) do
         if p.focused then
            p.bg = "#292929"
            break
         end
      end
   end
end)


function draw_tabbar(region_ix, s)
   local s = s or awful.screen.focused()
   local flexlist = tabs.layout()
   local tablist = get_tiled_clients(region_ix, s)

   if tablelength(tablist) == 0 then
      return
   end --|this should only fire on an empty region

   if tablelength(tablist) == 1 then
      clear_tabbar(tablist[1])
      return
   end --|reset tabbar titlebar when only
       --|one client is in the region.

   for cl_ix, cl in ipairs(tablist) do
      local flexlist = tabs.layout()
      global_tab_table[cl.window] = {}

      for cc_ix, cc in ipairs(tablist) do
         local buttons = gears.table.join(awful.button({}, 1, function() end))
         -- wid_temp
         global_tab_table[cl.window][cc_ix] = tabs.create(cc, (cc == cl), buttons, cl_ix)

         flexlist:add(global_tab_table[cl.window][cc_ix])
         flexlist.max_widget_size = 120
      end

      local titlebar = awful.titlebar(cl, {
         bg = tabs.bg_normal,
         size = tabs.size,
         position = tabs.position,
      })

      titlebar:setup{layout = wibox.layout.flex.horizontal, flexlist}
      awful.titlebar(cl, {size=8, position = "top"})
      awful.titlebar(cl, {size=0, position = "left"})
      awful.titlebar(cl, {size=0, position = "right"})
   end
end

function resize_region(region_ix, geom, reset)
   local tablist = get_tiled_clients(region_ix)
   for c_ix, c in ipairs(tablist) do
      if reset == true then 
         reset_client_meta(c) 
      else
         c.maximized_horizontal = reset.horizontal
         c.maximized_vertical = reset.vertical
         c.direction = reset.direction
      end
      c:geometry(geom)
   end
end

local function teleport_client(c)
   -- todo: need to recalculate tabs and also update c.region
   local cl = c or client.focus
   if not cl then return true end


   local is = {
      region=cl.region or get_client_info(c).active_region,
      geom=cl:geometry(),
      screen=cl.screen.index
   }

   if not cl.floating then
      cl:geometry({width=300, height=300})
   end --|to avoid machi's auto expansion


   cl:move_to_screen()
   local new_region = get_client_info(c).active_region

   if not new_region then
      c.region = nil
   end

   gears.timer.delayed_call(function (cl) 
      
      -- clear_tabbar(cl)
      cl:emit_signal("request::activate", "mouse_enter",{raise = true})
      cl:emit_signal("draw_tabbar", new_region)
   end,cl)
end

------------------------------------------------------ signal helpers -- ;

local function manage_signal(c)
   if c then
      global_client_table[c.window] = c
      --|add window.id to global index

      local active_region = get_client_info(c).active_region
      if active_region then
         c.region = active_region
         gears.timer.delayed_call(function(region, screen)
            draw_tabbar(region, screen)
         end, active_region, c.screen)
         
      end --|in case new client appears tiled
          --|we must update the regions tabbars.
   end
end

local function unmanage_signal(c)
   if c then
      global_client_table[c.window] = nil
      --|remove window.id to global index

      if not c.floating then
         local active_region = get_client_info(c).active_region
         if active_region then 
            draw_tabbar(active_region) end
      end
   end
end

local function selected_tag_signal(t)
   -- gears.timer.delayed_call(function(t)
      log(t.name)
      local regions = get_regions()
         if regions and #regions then
            for i, region in ipairs(regions) do
               draw_tabbar(i)
            end
         end
   -- end,t)
end

local function floating_signal(c)
   if c.floating then
      if c.region then
         gears.timer.delayed_call(function(active_region)
            clear_tabbar(c)
            draw_tabbar(c.region)
         end, active_region)
      end
   end --|window became floating

   if not c.floating then
      local active_region = get_client_info(c).active_region
      if active_region then
         c.region = active_region
         gears.timer.delayed_call(function(active_region)
            draw_tabbar(active_region)   
         end, active_region)
      end
   end --|window became tiled
end


--------------------------------------------------------------- signals -- ;

client.connect_signal("property::minimized", function(c)
   if c.minimized then unmanage_signal(c) end
   if not c.minimized then manage_signal(c) end 
end)
--[[+] manage minimized and not minimized ]]

client.connect_signal("property::floating", floating_signal)
--[[+]
   when windows switch between float and tiled we must
   perform necessary maintenance on the destination and
   source regions. a delayed call was necessary when
   clients become tiled to give awm enough time to draw the
   widgets properly.]]

client.connect_signal("tabbar_draw", draw_tabbar)
--[[+] experimental signalling ]]

-- client:connect_signal("property::name", function(c)
--    if widget_ix[c.window] then
--       local widget = widget_ix[c.window]:get_children_by_id(c.window)

--       text_temp.markup = "<span foreground='" .. fg_temp .. "'>" .. title_temp.. "</span>"
--    end
-- end)


client.connect_signal("unmanage", unmanage_signal) 
--[[+]
   when removing a tiled client we must update the tabbars
   of others. floating clients do not require any cleanup. ]]

client.connect_signal("manage", manage_signal)
--[[+]
   global_client_table is the milestone the tabbars rely on.
   whenever a new client appears we must add to it, and
   when a client is killed we must make sure it is removed. 
   
   when there are multiple monitors, our logic of
   awful.screen.focused() doesn't work. it won't draw the
   tabbars on the second monitor if the mouse is located at
   the first monitor and vice versa.

   it probably needs an order such as: s or
   client.focus.screen or awful.screen.focused() c.screen
   where applicable.

   and we might need to pass c and s to all the functions
   involved.]] 

tag.connect_signal("property::selected", selected_tag_signal)
--[[+]
   property::selected gets called the last, by the time we
   are here, we already have the global_client_list to draw
   tabbars. This may appear redundant here, but it's good
   to have this fire up in case the user switches tags. ]]

--------------------------------------------------------------- exports -- ;

module = {
   focus_by_direction = focus_by_direction,
   get_active_regions = get_client_info,
   shift_by_direction = shift_by_direction,
   expand_horizontal = expand_horizontal,
   shuffle = shuffle,
   old_shuffle = old_shuffle,
   my_shifter = my_shifter,
   expand_vertical = expand_vertical,
   move_to = move_to,
   get_regions = get_regions,
   toggle_always_on = toggle_always_on,
   draw_tabbar = draw_tabbar,
   get_global_clients = get_global_clients,
   update_global_clients = update_global_clients,
   get_client_info = get_client_info,
   teleport_client = teleport_client,
}

return module