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---------------------------------------------------------------------------
--- Create easily new buttons objects ignoring certain modifiers.
--
-- @author Julien Danjou <julien@danjou.info>
-- @copyright 2009 Julien Danjou
-- @classmod awful.button
---------------------------------------------------------------------------
-- Grab environment we need
local setmetatable = setmetatable
local ipairs = ipairs
local capi = { button = button }
local util = require("awful.util")
local button = { mt = {} }
--- Modifiers to ignore.
--
-- By default this is initialized as `{ "Lock", "Mod2" }`
-- so the `Caps Lock` or `Num Lock` modifier are not taking into account by awesome
-- when pressing keys.
--
-- @table ignore_modifiers
local ignore_modifiers = { "Lock", "Mod2" }
--- Create a new button to use as binding.
--
-- This function is useful to create several buttons from one, because it will use
-- the ignore_modifier variable to create more button with or without the ignored
-- modifiers activated.
--
-- For example if you want to ignore CapsLock in your buttonbinding (which is
-- ignored by default by this function), creating button binding with this function
-- will return 2 button objects: one with CapsLock on, and the other one with
-- CapsLock off.
--
-- @see button
-- @treturn table A table with one or several button objects.
function button.new(mod, _button, press, release)
local ret = {}
local subsets = util.subsets(ignore_modifiers)
for _, set in ipairs(subsets) do
ret[#ret + 1] = capi.button({ modifiers = util.table.join(mod, set),
button = _button })
if press then
ret[#ret]:connect_signal("press", function(_, ...) press(...) end)
end
if release then
ret[#ret]:connect_signal("release", function (_, ...) release(...) end)
end
end
return ret
end
function button.mt:__call(...)
return button.new(...)
end
return setmetatable(button, button.mt)
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|
