vndb/mithril-vndb
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Unbreak accidental back-compat break with event optimization (#2222)

Browse source 
This was supposed to be purely additive. See here for more details:

https://github.com/MithrilJS/mithril.js/pull/1949#issuecomment-417824513
This commit is contained in:
Isiah Meadows 2018-09-18 10:14:21 -04:00 • committed by GitHub
parent f4ddcc4b24
commit c703b03253
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
6 changed files with 80 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

9
render/render.js
View file

@ -802,13 +802,20 @@ module.exports = function($window) {
// 4. The event name is remapped to the handler before calling it.
// 5. In function-based event handlers, `ev.target === this`. We replicate
// that below.
// 6. In function-based event handlers, `return false` prevents the default
// action and stops event propagation. We replicate that below.
function EventDict() {}
EventDict.prototype = Object.create(null)
EventDict.prototype.handleEvent = function (ev) {
var handler = this["on" + ev.type]
if (typeof handler === "function") handler.call(ev.target, ev)
var result
if (typeof handler === "function") result = handler.call(ev.target, ev)
else if (typeof handler.handleEvent === "function") handler.handleEvent(ev)
if (typeof onevent === "function") onevent.call(ev.target, ev)
if (result === false) {
ev.preventDefault()
ev.stopPropagation()
}
}
//event