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| /* @flow */
|
| import { updateListeners } from 'core/vdom/helpers/update-listeners'
|
| let target: any
|
| function createOnceHandler (event, handler, capture) {
| const _target = target // save current target element in closure
| return function onceHandler () {
| const res = handler.apply(null, arguments)
| if (res !== null) {
| remove(event, onceHandler, capture, _target)
| }
| }
| }
|
| function add (
| event: string,
| handler: Function,
| capture: boolean,
| passive?: boolean,
| params?: Array<any>
| ) {
| if (capture) {
| console.log('Weex do not support event in bubble phase.')
| return
| }
| target.addEvent(event, handler, params)
| }
|
| function remove (
| event: string,
| handler: any,
| capture: any,
| _target?: any
| ) {
| (_target || target).removeEvent(event)
| }
|
| function updateDOMListeners (oldVnode: VNodeWithData, vnode: VNodeWithData) {
| if (!oldVnode.data.on && !vnode.data.on) {
| return
| }
| const on = vnode.data.on || {}
| const oldOn = oldVnode.data.on || {}
| target = vnode.elm
| updateListeners(on, oldOn, add, remove, createOnceHandler, vnode.context)
| target = undefined
| }
|
| export default {
| create: updateDOMListeners,
| update: updateDOMListeners
| }
|
|
