100 lines
2.3 KiB
JavaScript
100 lines
2.3 KiB
JavaScript
import { useRect } from "@vant/use";
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import { loadImageAsync } from "./util.mjs";
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import { noop } from "../../utils/index.mjs";
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import { h } from "vue";
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var stdin_default = (lazyManager) => ({
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props: {
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src: [String, Object],
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tag: {
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type: String,
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default: "img"
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}
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},
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render() {
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var _a, _b;
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return h(
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this.tag,
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{
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src: this.renderSrc
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},
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(_b = (_a = this.$slots).default) == null ? void 0 : _b.call(_a)
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);
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},
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data() {
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return {
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el: null,
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options: {
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src: "",
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error: "",
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loading: "",
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attempt: lazyManager.options.attempt
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},
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state: {
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loaded: false,
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error: false,
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attempt: 0
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},
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renderSrc: ""
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};
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},
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watch: {
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src() {
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this.init();
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lazyManager.addLazyBox(this);
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lazyManager.lazyLoadHandler();
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}
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},
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created() {
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this.init();
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},
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mounted() {
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this.el = this.$el;
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lazyManager.addLazyBox(this);
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lazyManager.lazyLoadHandler();
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},
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beforeUnmount() {
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lazyManager.removeComponent(this);
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},
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methods: {
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init() {
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const { src, loading, error } = lazyManager.valueFormatter(this.src);
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this.state.loaded = false;
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this.options.src = src;
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this.options.error = error;
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this.options.loading = loading;
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this.renderSrc = this.options.loading;
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},
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checkInView() {
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const rect = useRect(this.$el);
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return rect.top < window.innerHeight * lazyManager.options.preLoad && rect.bottom > 0 && rect.left < window.innerWidth * lazyManager.options.preLoad && rect.right > 0;
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},
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load(onFinish = noop) {
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if (this.state.attempt > this.options.attempt - 1 && this.state.error) {
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if (process.env.NODE_ENV !== "production" && !lazyManager.options.silent) {
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console.log(
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`[@vant/lazyload] ${this.options.src} tried too more than ${this.options.attempt} times`
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);
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}
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onFinish();
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return;
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}
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const { src } = this.options;
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loadImageAsync(
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{ src },
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({ src: src2 }) => {
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this.renderSrc = src2;
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this.state.loaded = true;
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},
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() => {
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this.state.attempt++;
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this.renderSrc = this.options.error;
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this.state.error = true;
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}
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);
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}
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}
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});
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export {
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stdin_default as default
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};
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