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Completely misunderstood built in Javascript event listeners. EventWindow Removed. EventCaller now exports an instance of itself by default, but classes can still etend from the EventCaller class itself.

dev-tmpl
Bryan Miller 6 年前
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57a782e971
共有 2 个文件被更改,包括 2 次插入100 次删除
  1. +2
    -1
      app/js/EventCaller.js
  2. +0
    -99
      app/js/ui/EventWindow.js

+ 2
- 1
app/js/EventCaller.js 查看文件

@@ -195,7 +195,8 @@ export class EventCaller{
}



const GlobalEvent = new EventCaller();
export default GlobalEvent;




+ 0
- 99
app/js/ui/EventWindow.js 查看文件

@@ -1,99 +0,0 @@
import {EventCaller} from '/app/js/EventCaller.js'



function handle_emitter(event){
var el = event.target;
if (el.hasAttribute("emit")){
var args = [el.getAttribute("emit")];
if (el.hasAttribute("emit-args")){
try {
var j = JSON.parse(el.getAttribute("emit-args"));
if (j instanceof Array){
args.concat(j);
} else {
args.push(j);
}
} catch (e) {
console.log("Failed to emit '" + args[0] + "'. Arguments not in valid JSON form.");
return;
}
}
EventWindow.instance.emit.apply(EventWindow.instance, args);
}
}


/**
* Wraps the browser's window object around the EventCaller allowing the user to connect to system events
* by listening for those events (ex: "onclick", "onresize", etc).
*
* Users should not directly set the window event handler functions if using this class.
*/
class EventWindow extends EventCaller{
constructor(){
super();
if (!EventWindow.instance)
EventWindow.instance = this;
return EventWindow.instance;
}

get emitter_attributes_enabled(){
return this.is_listening("onclick", handle_emitter);
}

enable_emitter_attributes(enable=true){
if (enable === true){
this.listen("onclick", handle_emitter);
} else {
this.unlisten("onclick", handle_emitter);
}
}

listen(eventName, callback, owner=null, once=false){
if (window.hasOwnProperty(eventName)){
if (window[eventName] === null || typeof(window[eventName]) === 'undefined'){
window[eventName] = (function(event){
this.emit(eventName, event);
}).bind(this);
}
}
super.listen(eventName, callback, owner, once);
return this;
}

unlisten(eventName, callback, owner=null){
super.unlisten(eventName, callback, owner);
if (window.hasOwnProperty(eventName)){
if (super.event_listener_count(eventName) == 0){
window[eventName] = undefined;
}
}
return this;
}

unlisten_event(eventName){
super.unlisten_event(eventName);
if (window.hasOwnProperty(eventName)){
window[eventName] = undefined;
}
return this;
}

unlisten_all(){
var we = this.watchedEvents;
super.unlisten_all();
for (var i=0; i < we.length; i++){
if (window.hasOwnProperty(we[i])){
window[we[i]] = undefined;
}
}
return this;
}
}


const instance = new EventWindow();
//Object.freeze(instance);
export default instance;


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