mirror of https://github.com/koreader/koreader
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
848 B
Lua
36 lines
848 B
Lua
--[[--
|
|
The EventListener is an interface that handles events. This is the base class
|
|
for @{ui.widget.widget}
|
|
|
|
EventListeners have a rudimentary event handler/dispatcher that
|
|
will call a method "onEventName" for an event with name
|
|
"EventName"
|
|
]]
|
|
|
|
local EventListener = {}
|
|
|
|
function EventListener:new(new_o)
|
|
local o = new_o or {}
|
|
setmetatable(o, self)
|
|
self.__index = self
|
|
if o.init then o:init() end
|
|
return o
|
|
end
|
|
|
|
--[[--
|
|
Invoke handler method for an event.
|
|
|
|
Handler method name is determined by @{ui.event.Event}'s handler field.
|
|
By default, it's `"on"..Event.name`.
|
|
|
|
@tparam ui.event.Event event
|
|
@treturn bool return true if event is consumed successfully.
|
|
]]
|
|
function EventListener:handleEvent(event)
|
|
if self[event.handler] then
|
|
return self[event.handler](self, unpack(event.args))
|
|
end
|
|
end
|
|
|
|
return EventListener
|