Files
Bubberstation/lua/handler_group.lua

76 lines
2.0 KiB
Lua

<<<<<<< HEAD
local SS13 = require('SS13')
=======
local SS13 = require("SS13")
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local HandlerGroup = {}
HandlerGroup.__index = HandlerGroup
function HandlerGroup.new()
return setmetatable({
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registered = {}
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registered = {},
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}, HandlerGroup)
end
-- Registers a signal on a datum for this handler group instance.
function HandlerGroup:register_signal(datum, signal, func)
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local callback = SS13.register_signal(datum, signal, func)
if not callback then
return
end
table.insert(self.registered, { datum = dm.global_proc("WEAKREF", datum), signal = signal, callback = callback })
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local registered_successfully = SS13.register_signal(datum, signal, func)
if not registered_successfully then
return
end
table.insert(self.registered, { datum = datum, signal = signal, func = func })
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end
-- Clears all the signals that have been registered on this HandlerGroup
function HandlerGroup:clear()
for _, data in self.registered do
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if not data.callback or not data.datum then
continue
end
SS13.unregister_signal(data.datum, data.signal, data.callback)
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if not data.func or not SS13.is_valid(data.datum) then
continue
end
SS13.unregister_signal(data.datum, data.signal, data.func)
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end
table.clear(self.registered)
end
-- Clears all the signals that have been registered on this HandlerGroup when a specific signal is sent on a datum.
function HandlerGroup:clear_on(datum, signal, func)
SS13.register_signal(datum, signal, function(...)
if func then
func(...)
end
self:clear()
end)
end
-- Registers a signal on a datum and clears it after it is called once.
function HandlerGroup.register_once(datum, signal, func)
local callback = HandlerGroup.new()
callback:clear_on(datum, signal, func)
return callback
end
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return HandlerGroup