102 lines
3.9 KiB
Plaintext
102 lines
3.9 KiB
Plaintext
var $41b7691783731623$exports = require("./Rect.main.js");
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var $e1bc15d49d21df0e$exports = require("./Virtualizer.main.js");
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var $amfZP$react = require("react");
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function $parcel$interopDefault(a) {
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return a && a.__esModule ? a.default : a;
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}
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function $parcel$export(e, n, v, s) {
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Object.defineProperty(e, n, {get: v, set: s, enumerable: true, configurable: true});
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}
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$parcel$export(module.exports, "useVirtualizerState", () => $f02ef43b5e8eee9b$export$1505db82fe357e65);
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/*
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* Copyright 2020 Adobe. All rights reserved.
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* This file is licensed to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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* OF ANY KIND, either express or implied. See the License for the specific language
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* governing permissions and limitations under the License.
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*/
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const $f02ef43b5e8eee9b$export$e5c5a5f917a5871c = typeof document !== 'undefined' ? (0, ($parcel$interopDefault($amfZP$react))).useLayoutEffect : ()=>{};
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function $f02ef43b5e8eee9b$export$1505db82fe357e65(opts) {
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let [visibleRect, setVisibleRect] = (0, $amfZP$react.useState)(new (0, $41b7691783731623$exports.Rect)(0, 0, 0, 0));
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let [isScrolling, setScrolling] = (0, $amfZP$react.useState)(false);
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let [invalidationContext, setInvalidationContext] = (0, $amfZP$react.useState)({});
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let visibleRectChanged = (0, $amfZP$react.useRef)(false);
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let [virtualizer] = (0, $amfZP$react.useState)(()=>new (0, $e1bc15d49d21df0e$exports.Virtualizer)({
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collection: opts.collection,
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layout: opts.layout,
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delegate: {
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setVisibleRect (rect) {
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setVisibleRect(rect);
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visibleRectChanged.current = true;
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},
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// TODO: should changing these invalidate the entire cache?
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renderView: opts.renderView,
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invalidate: setInvalidationContext
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}
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}));
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// onVisibleRectChange must be called from an effect, not during render.
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$f02ef43b5e8eee9b$export$e5c5a5f917a5871c(()=>{
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if (visibleRectChanged.current) {
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visibleRectChanged.current = false;
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opts.onVisibleRectChange(visibleRect);
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}
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});
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let mergedInvalidationContext = (0, $amfZP$react.useMemo)(()=>{
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if (opts.layoutOptions != null) return {
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...invalidationContext,
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layoutOptions: opts.layoutOptions
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};
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return invalidationContext;
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}, [
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invalidationContext,
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opts.layoutOptions
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]);
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let visibleViews = virtualizer.render({
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layout: opts.layout,
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collection: opts.collection,
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persistedKeys: opts.persistedKeys,
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layoutOptions: opts.layoutOptions,
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visibleRect: visibleRect,
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invalidationContext: mergedInvalidationContext,
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isScrolling: isScrolling
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});
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let contentSize = virtualizer.contentSize;
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let startScrolling = (0, $amfZP$react.useCallback)(()=>{
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setScrolling(true);
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}, []);
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let endScrolling = (0, $amfZP$react.useCallback)(()=>{
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setScrolling(false);
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}, []);
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let state = (0, $amfZP$react.useMemo)(()=>({
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virtualizer: virtualizer,
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visibleViews: visibleViews,
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setVisibleRect: setVisibleRect,
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contentSize: contentSize,
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isScrolling: isScrolling,
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startScrolling: startScrolling,
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endScrolling: endScrolling
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}), [
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virtualizer,
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visibleViews,
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setVisibleRect,
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contentSize,
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isScrolling,
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startScrolling,
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endScrolling
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]);
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return state;
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}
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//# sourceMappingURL=useVirtualizerState.main.js.map
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