newEdition/components/uniapp-zaudio/dist/util.js

"use strict";
Object.defineProperty(exports, "__esModule", {
	value: true
});
exports.EventBus = exports.throttle = exports.formatSeconds = void 0;

function formatSeconds(seconds) {
	var result = typeof seconds === "string" ? parseFloat(seconds) : seconds;
	if (isNaN(result)) return "";
	let h = Math.floor(result / 3600) < 10 ? "0" + Math.floor(result / 3600) : Math.floor(result / 3600);
	let m = Math.floor((result / 60) % 60) < 10 ? "0" + Math.floor((result / 60) % 60) : Math.floor((result / 60) % 60);
	let s = Math.floor(result % 60) < 10 ? "0" + Math.floor(result % 60) : Math.floor(result % 60);

	return `${h}:${m}:${s}`;
	//time为毫秒数
}
exports.formatSeconds = formatSeconds;

function throttle(fn, wait) {
	let previous = 0;
	return function(...arg) {
		let context = this;
		let now = Date.now();
		//每隔一段时间执行一次；
		if (now - previous > wait) {
			fn.apply(context, arg);
			previous = now;
		}
	};
}
exports.throttle = throttle;
class EventBus {
	constructor() {
		this._events = new Map();
	}
	on(event, action, fn) {
		let arr = this._events.get(event);
		let hasAction = arr ?
			arr.findIndex((i) => i.action == action) :
			-1;
		if (hasAction > -1) {
			return;
		}
		this._events.set(event, [
			...(this._events.get(event) || []),
			{
				action,
				fn,
			},
		]);
	}
	has(event) {
		return this._events.has(event);
	}
	emit(event, data) {
		if (!this.has(event)) {
			return;
		}
		let arr = this._events.get(event);
		arr.forEach((i) => {
			i.fn(data);
		});
	}
	off(event, action) {
		if (!this.has(event)) {
			return;
		}
		let arr = this._events.get(event);
		let newdata = arr.filter((i) => i.action !== action);
		this._events.set(event, [...newdata]);
	}
}
exports.EventBus = EventBus;