neodotfiles/config/awesome/core/signals.lua

local naughty = require("naughty")
local beautiful = require("beautiful")

-- Error handling
naughty.connect_signal(
    "request::display_error",
    function(message, startup)
        naughty.notification {
            urgency = "critical",
            title = "Oops, an error happened" .. (startup and " during startup!" or "!"),
            message = message
        }
    end
)

-- Signals
-- no borders when rearranging only 1 non-floating or maximized client
screen.connect_signal(
    "arrange",
    function(s)
        local max = s.selected_tag.layout.name == "max"
        local only_one = #s.tiled_clients == 1  -- use tiled_clients so that other floating windows don't affect the count
        -- but iterate over clients instead of tiled_clients as tiled_clients doesn't include maximized windows
        for _, c in pairs(s.clients) do
            if (max or only_one) and not c.floating or c.maximized then
                c.border_width = 0
            else
                c.border_width = beautiful.border_width
            end
        end
    end
)

-- enable sloppy focus, so that focus follows mouse.
client.connect_signal("mouse::enter", function(c)
    c:emit_signal("request::activate", "mouse_enter", {raise = false})
end)

-- keep floating windows on top
client.connect_signal("property::floating", function(c)
    if not c.fullscreen then
        if c.floating then
            c.ontop = true
        else
            c.ontop = false
        end
    end
end)