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40 lines
650 B
Lua
40 lines
650 B
Lua
--- Lua event small library
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-- @module druid_event
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local class = require("druid.system.middleclass")
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-- @class DruidEvent
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local M = class("druid.event")
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function M.initialize(self)
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self._callbacks = {}
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end
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function M.subscribe(self, callback)
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assert(type(callback) == "function", "Callback should be function")
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table.insert(self._callbacks, callback)
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end
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function M.unsubscribe(self, callback)
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for i = 1, #self._callbacks do
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if self._callbacks[i] == callback then
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table.remove(self._callbacks, i)
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return
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end
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end
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end
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function M.trigger(self, ...)
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for i = 1, #self._callbacks do
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self._callbacks[i](...)
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end
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end
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return M
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