--   This file is part of Reno desktop.
--
--  Reno desktop is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
--
--  Reno desktop is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
--
--  You should have received a copy of the GNU General Public License along with Reno desktop. If not, see <https://www.gnu.org/licenses/>. 
--  Compositor manager with inhibitor 
local awful = require("awful")
-- Configuration variables
local cfg = config.compositor or {}
local compositor_enabled = false
local inhibitors = {}
local compositor_pid = nil
local function count(t)
    local c = 0
    for _,_ in pairs(t) do
        c = c + 1
    end
    return c
end
if cfg.exec then
    compositor_pid = awful.spawn(cfg.exec)
    compositor_enabled = true
    client.connect_signal("manage",function(c)
        if c.inhibit_compositor then
            inhibitors[c] = true
            if compositor_enabled then
                awful.spawn("kill "..tostring(compositor_pid))
                compositor_enabled = false
            end
        end
    end)
    client.connect_signal("unmanage",function(c)
        if c.inhibit_compositor then
            inhibitors[c] = nil
            if count(inhibitors) == 0 then
                if compositor_enabled == false then
                    compositor_pid = awful.spawn(cfg.exec)
                    compositor_enabled = true
                end
            end
        end
    end)
    awesome.connect_signal("exit",function()
        if compositor_enabled and compositor_pid then
            awful.spawn("kill "..tostring(compositor_pid))
        end
    end)
end