28 lines
859 B
Lua
28 lines
859 B
Lua
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local gears = require("gears") --DOC_HIDE
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local o = gears.object{}
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-- Add a new signals to the object. This is used to catch typos
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o:add_signal "my_signal"
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-- Function can be attached to signals
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local function slot(obj, a, b, c)
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print("In slot", obj, a, b, c)
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end
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o:connect_signal("my_signal", slot)
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-- Emit can be done without argument. In that case, the object will be
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-- implicitly added as an argument.
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o:emit_signal "my_signal"
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-- It is also possible to add as many random arguments are required.
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o:emit_signal("my_signal", "foo", "bar", 42)
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-- Finally, to allow the object to be garbage collected (the memory freed), it
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-- is necessary to disconnect the signal or use `weak_connect_signal`
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o:disconnect_signal("my_signal", slot)
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-- This time, the `slot` wont be called as it is no longer connected.
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o:emit_signal "my_signal"
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