161 lines
5.0 KiB
Lua
161 lines
5.0 KiB
Lua
---------------------------------------------------------------------------
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-- @author Julien Danjou <julien@danjou.info>
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-- @copyright 2008 Julien Danjou
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-- @release v3.4.9
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---------------------------------------------------------------------------
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-- Grab environment we need
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local pairs = pairs
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local table = table
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local ipairs = ipairs
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local type = type
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local math = math
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local capi =
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{
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hooks = hooks
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}
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local util = require("awful.util")
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--- Hooks module for awful.
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-- This module is deprecated and should not be used anymore. You are encouraged
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-- to use signals.
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module("awful.hooks")
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-- User hook functions
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user = {}
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--- Create a new userhook (for external libs).
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-- @param name Hook name.
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function user.create(name)
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_M[name] = {}
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_M[name].callbacks = {}
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_M[name].register = function (f)
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table.insert(_M[name].callbacks, f)
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end
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_M[name].unregister = function (f)
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for k, h in ipairs(_M[name].callbacks) do
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if h == f then
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table.remove(_M[name].callbacks, k)
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break
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end
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end
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end
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end
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--- Call a created userhook (for external libs).
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-- @param name Hook name.
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function user.call(name, ...)
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for name, callback in pairs(_M[name].callbacks) do
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callback(...)
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end
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end
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-- Autodeclare awful.hooks.* functions
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-- mapped to awesome hooks.* functions
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for name, hook in pairs(capi.hooks) do
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_M[name] = {}
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if name == 'timer' then
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_M[name].register = function (time, f, runnow)
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util.deprecate("timer object")
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if type(time) ~= 'number' or type(f) ~= 'function' or time <= 0 then
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return
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end
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if not _M[name].callbacks then
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_M[name].callbacks = {}
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end
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for k, v in pairs(_M[name].callbacks) do
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if v.callback == f then
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_M[name].unregister(f)
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_M[name].register(time, f, runnow)
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return
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end
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end
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local new_timer
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if _M[name].timer then
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-- Take the smallest between current and new
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new_timer = math.min(time, _M[name].timer)
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else
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new_timer = time
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end
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if _M[name].timer ~= new_timer then
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_M[name].timer = new_timer
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end
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hook(_M[name].timer, function (...)
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for i, callback in ipairs(_M[name].callbacks) do
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callback['counter'] = callback['counter'] + _M[name].timer
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if callback['counter'] >= callback['timer'] then
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callback['callback'](...)
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callback['counter'] = 0
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end
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end
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end)
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if runnow then
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table.insert(_M[name].callbacks, { callback = f, timer = time, counter = time })
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else
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table.insert(_M[name].callbacks, { callback = f, timer = time, counter = 0 })
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end
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end
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_M[name].unregister = function (f)
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if _M[name].callbacks then
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for k, h in ipairs(_M[name].callbacks) do
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if h.callback == f then
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table.remove(_M[name].callbacks, k)
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break
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end
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end
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local delays = { }
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for k, h in ipairs(_M[name].callbacks) do
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table.insert(delays, h.timer)
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end
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table.sort(delays)
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_M[name].timer = delays[1]
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if not delays[1] then delays[1] = 0 end
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hook(delays[1], function (...)
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for i, callback in ipairs(_M[name].callbacks) do
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callback['counter'] = callback['counter'] + _M[name].timer
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if callback['counter'] >= callback['timer'] then
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callback['callback'](...)
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callback['counter'] = 0
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end
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end
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end)
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end
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end
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else
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_M[name].register = function (f)
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util.deprecate("signals")
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if not _M[name].callbacks then
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_M[name].callbacks = {}
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hook(function (...)
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for i, callback in ipairs(_M[name].callbacks) do
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callback(...)
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end
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end)
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end
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table.insert(_M[name].callbacks, f)
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end
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end
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if name ~= "timer" then
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_M[name].unregister = function (f)
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if _M[name].callbacks then
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for k, h in ipairs(_M[name].callbacks) do
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if h == f then
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table.remove(_M[name].callbacks, k)
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break
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end
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end
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end
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end
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end
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end
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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