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---@class cmp.Event
---@field private events table<string, function[]>
local event = {}
---Create vents
event.new = function()
local self = setmetatable({}, { __index = event })
self.events = {}
return self
end
---Add event listener
---@param name string
---@param callback function
---@return function
event.on = function(self, name, callback)
if not self.events[name] then
self.events[name] = {}
end
table.insert(self.events[name], callback)
return function()
self:off(name, callback)
end
end
---Remove event listener
---@param name string
---@param callback function
event.off = function(self, name, callback)
for i, callback_ in ipairs(self.events[name] or {}) do
if callback_ == callback then
table.remove(self.events[name], i)
break
end
end
end
---Remove all events
event.clear = function(self)
self.events = {}
end
---Emit event
---@param name string
event.emit = function(self, name, ...)
for _, callback in ipairs(self.events[name] or {}) do
callback(...)
end
end
return event
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