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emap

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manages event listeners

github.com/jarends/emap

jarends/emap

146 lines (103 loc) • 4.77 kB
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Dict = require 'jsdictionary' class EventMap ### 00000000 000 000 00000000 000 000 000000000 00 00 0000000 00000000 000 000 000 000 0000 000 000 000 000 000 000 000 000 0000000 000 000 0000000 000 0 000 000 000000000 000000000 00000000 000 000 000 000 0000 000 000 0 000 000 000 000 00000000 0 00000000 000 000 000 000 000 000 000 000 ### constructor: () -> @dispatcherMap = new Dict() ### 00 00 0000000 00000000 000 000 000 000 000 000 000000000 000000000 00000000 000 0 000 000 000 000 000 000 000 000 000 ### map: (dispatcher, type, handler, owner, useCapture = false) -> listenerMap = @dispatcherMap.get(dispatcher) ? @dispatcherMap.map(dispatcher, {}) listeners = listenerMap[type] ? listenerMap[type] = [] unregister = null for info in listeners return null if info.h == handler and info.o == owner and info.u == useCapture if owner cb = callback = (args...) -> handler.apply(owner, args); null else cb = handler if dispatcher.addEventListener dispatcher.addEventListener type, cb, useCapture else if dispatcher.addListener dispatcher.addListener type, cb, useCapture else if dispatcher.on dispatcher.on type, cb, useCapture else if dispatcher.$on unregister = dispatcher.$on type, cb, useCapture else if dispatcher.add dispatcher.add type, handler, owner listeners.push d:dispatcher, o:owner, h:handler, u:useCapture, c:callback, unregister:unregister null ### 000 000 000 000 00 00 0000000 00000000 000 000 0000 000 000 000 000 000 000 000 000 000 000 0 000 000000000 000000000 00000000 000 000 000 0000 000 0 000 000 000 000 0000000 000 000 000 000 000 000 000 ### unmap: (dispatcher, type, handler, owner, useCapture = false) -> listenerMap = @dispatcherMap.get dispatcher return null if not listenerMap listeners = listenerMap[type] return null if not listeners i = listeners.length while --i >= 0 info = listeners[i] if info.h == handler and info.o == owner and info.u == useCapture listeners.splice i, 1 cb = if owner then info.c else handler if info.unregister info.unregister() else if dispatcher.removeEventListener dispatcher.removeEventListener type, cb, useCapture else if dispatcher.removeListener dispatcher.removeListener type, cb, useCapture else if dispatcher.off dispatcher.off type, cb, useCapture else if dispatcher.remove dispatcher.remove type, handler, owner delete listenerMap[type] if not listeners.length @dispatcherMap.unmap dispatcher if not Dict.hasKeys listenerMap null ### 0000000 000 000 000 000 000 000 000000000 000 000 000 000 000 000 000 000 0000000 0000000 ### all: -> @dispatcherMap.forEach (dispatcher, listenerMap) => for type, listeners of listenerMap while info = listeners.shift() cb = if info.o then info.c else info.h if info.unregister info.unregister() else if dispatcher.removeEventListener dispatcher.removeEventListener type, cb, info.u else if dispatcher.removeListener dispatcher.removeListener type, cb, info.u else if dispatcher.off dispatcher.off type, cb, info.u else if dispatcher.remove dispatcher.remove type, info.h, info.o @dispatcherMap.unmap dispatcher null ### 00000000 000 000 00000000 0000000 00000000 000000000 0000000 000 000 000 000 000 000 000 000 000 000 000 0000000 00000 00000000 000 000 0000000 000 0000000 000 000 000 000 000 000 000 000 000 000 00000000 000 000 000 0000000 000 000 000 0000000 ### module.exports = EventMap.default = EventMap