75 lines
1.4 KiB
Lua
75 lines
1.4 KiB
Lua
-- Events library
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-- (c) Er2 2022 <er2@dismail.de>
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-- Zlib License
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require 'class'
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class 'Events' {
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function(this)
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this._ev_ = {}
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end,
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_add = function(this, type, name, func)
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table.insert(this._ev_, {
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type = tostring(type),
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name = tostring(name),
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func = func,
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})
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end,
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on = function(this, name, func)
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this:_add('on', name, func)
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end,
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once = function(this, name, func)
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this:_add('once', name, func)
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end,
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off = function(this, func)
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for k, v in pairs(this._ev_) do
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if v.func == func
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then table.remove(this._ev_, k)
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end
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end
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end,
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_ev = function(this, t, i, name, ...)
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local v = t[i]
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if v.name == name then
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v.func(...)
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if v.type == 'once'
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then table.remove(t, i)
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end
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end
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end,
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emit = function(this, name, ...)
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local t = this._ev_
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for i = 1, #t do
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local v = t[i]
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if type(v) == 'table'
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and type(v.name) == 'string'
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and type(v.type) == 'string'
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and type(v.func) == 'function'
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then this:_ev(t, i, name, ...)
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else print 'Invalid event'
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if v then print(v, v.name, v.type, v.func)
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else print 'nil' end
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end
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end
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end,
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}
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class 'EventsThis' : inherits 'Events' {
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_ev = function(this, t, i, name, ...)
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local v = t[i]
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if v.name == name then
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v.func(this, ...)
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if v.type == 'once'
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then table.remove(t, i)
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end
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end
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end,
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}
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