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----------------------------------------------------------------
-- ALt-Tab-style switcher.
----------------------------------------------------------------
-- Benjamin Franzke <benjaminfranzke@googlemail.com
-- Licensed under the GPL-3
----------------------------------------------------------------
-- To use this module add:
-- local switcher = require("switcher")
-- to the top of your rc.lua
--
-- And add the following to your global keybindings:
-- awful.key({ modkey, }, "Tab", function()
-- switcher.start( 1, "Super_L", "Tab", "ISO_Left_Tab")
-- end),
--
-- awful.key({ modkey, }, "ISO_Left_Tab", function()
-- switcher.start(-1, "Super_L", "Tab", "ISO_Left_Tab")
-- end),
--
----------------------------------------------------------------
-- Grab environment
local ipairs = ipairs
local pairs = pairs
local awful = require("awful")
local naughty = require("naughty")
local table = table
local capi = {
tag = tag,
mouse = mouse,
client = client,
screen = screen,
wibox = wibox,
timer = timer,
keygrabber = keygrabber,
}
-- Switcher: Alt-Tab-like switching
module("switcher")
local state = {
switcher_idx = 0,
key_mod = "Super_L",
key_next = "Tab",
key_prev = "ISO_Left_Tab",
}
local function switcher_next(rel)
local cla = awful.client.focus.history.get(capi.mouse.screen, state.switcher_idx)
local cli = awful.client.focus.history.get(capi.mouse.screen, state.switcher_idx + rel)
awful.client.unmark(cla)
state.switcher_idx = state.switcher_idx + rel
if not cli then
if rel > 0 then
state.switcher_idx = rel - 1
elseif rel < 0 then
local i = 0
local c = awful.client.focus.history.get(capi.mouse.screen, 0)
while c do
i = i + 1
c = awful.client.focus.history.get(capi.mouse.screen, i)
end
state.switcher_idx = i + rel
end
cli = awful.client.focus.history.get(capi.mouse.screen, state.switcher_idx)
end
cli:raise()
if awful.client.ismarked(cli) then
cli:emit_signal("marked")
else
awful.client.mark(cli)
end
end
local function switcher_end()
local c = awful.client.focus.history.get(capi.mouse.screen, state.switcher_idx)
state.switcher_idx = 0
c:raise()
awful.client.unmark(c)
capi.client.focus = c
end
local function switch(modifiers, key, event)
if event == "press" and key == state.key_next then
switcher_next(1)
elseif event == "press" and key == state.key_prev then
switcher_next(-1)
end
if event == "release" and key == state.key_mod then
switcher_end()
capi.keygrabber.stop()
return false
end
return true
end
function start(rel, key_mod, key_next, key_prev)
state.switcher_idx = 0
state.key_mod = key_mod
state.key_next = key_next
state.key_prev = key_prev
switcher_next(rel)
capi.keygrabber.run(switch)
end
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