Implementation of EventEmitter for Lua.
local EE = require "EventEmitter"
local class = require "30log"
-- Create wrapper for EventEmitter
local EventEmitter = EE.extend(class('EventEmitter')) do
function EventEmitter:init()
-- object by default should have `_EventEmitter` property
self._EventEmitter = EE.EventEmitter.new{self = self}
end
end
local Window = EventEmitter:extend('Window')
local window = Window:new()
window:on('resize', function(self, event, w, h)
print(self, ("Resized %dx%d"):format(w, h))
end)
window:emit('resize', 125, 250)local EventEmitter = require "EventEmitter"
local server = {}
EventEmitter.extend_object(server)
server:on('accept', function() ... end)
server:emit('accept', host, port)Incompatabilities with EventEmitter2
- Lua version has no defined order of call listners
- JS Allow register same function for same event multiple times.
server.on('A', test);
server.on('A', test);
server.emit('A') // `test` called twice- If event has wildcard followed by some value then mult-level wildcard does not works
server.on('foo.**', test);
server.emit('foo.*') // called
server.emit('foo.*.bar') // not called- In JS Multi-level key in middle of mask does not allo zero match with wildcard event.
server.on('foo.**.bar', test);
server.emit('foo.*') // not called
server.emit('foo.bar') // called
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