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34 lines
997 B
34 lines
997 B
3 years ago
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import { getCurrentPage } from '../common/utils';
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function onPageScroll(event) {
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const { vanPageScroller = [] } = getCurrentPage();
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vanPageScroller.forEach((scroller) => {
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if (typeof scroller === 'function') {
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// @ts-ignore
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scroller(event);
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}
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});
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}
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export const pageScrollMixin = (scroller) =>
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Behavior({
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attached() {
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const page = getCurrentPage();
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if (Array.isArray(page.vanPageScroller)) {
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page.vanPageScroller.push(scroller.bind(this));
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} else {
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page.vanPageScroller =
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typeof page.onPageScroll === 'function'
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? [page.onPageScroll.bind(page), scroller.bind(this)]
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: [scroller.bind(this)];
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}
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page.onPageScroll = onPageScroll;
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},
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detached() {
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var _a;
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const page = getCurrentPage();
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page.vanPageScroller =
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((_a = page.vanPageScroller) === null || _a === void 0
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? void 0
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: _a.filter((item) => item !== scroller)) || [];
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},
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});
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