雨霖铃
41 lines
1017 B
JavaScript
41 lines
1017 B
JavaScript
export class EventManager {
|
|
constructor() {
|
|
this.listeners = [];
|
|
}
|
|
|
|
add(ele, type, handler, options) {
|
|
ele.addEventListener(type, handler, options);
|
|
this.listeners.push({ele, type, handler, options});
|
|
}
|
|
|
|
remove(ele, type, handler, options) {
|
|
ele.removeEventListener(type, handler, options);
|
|
this.listeners = this.listeners.filter(
|
|
(listener) =>
|
|
listener.ele !== ele ||
|
|
listener.type !== type ||
|
|
listener.handler !== handler ||
|
|
listener.options !== options
|
|
);
|
|
}
|
|
|
|
removeAll() {
|
|
return new Promise((resolve, reject) => {
|
|
this.listeners.onload = () => {
|
|
this.listeners.forEach((listener) => {
|
|
listener.ele.removeEventListener(
|
|
listener.type,
|
|
listener.handler,
|
|
listener.options
|
|
);
|
|
});
|
|
resolve();
|
|
};
|
|
this.listeners.onerror = () => {
|
|
console.error('unload event error');
|
|
reject();
|
|
};
|
|
this.listeners = [];
|
|
});
|
|
}
|
|
} |