53 lines
2.3 KiB
JavaScript
53 lines
2.3 KiB
JavaScript
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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, "Layout", function () { return $4b8e6a761bc1571f$export$c84671f46d6a1ca; });
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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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*/ class $4b8e6a761bc1571f$export$c84671f46d6a1ca {
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/**
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* Returns whether the layout should invalidate in response to
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* visible rectangle changes. By default, it only invalidates
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* when the virtualizer's size changes. Return true always
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* to make the layout invalidate while scrolling (e.g. sticky headers).
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*/ shouldInvalidate(newRect, oldRect) {
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// By default, invalidate when the size changes
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return newRect.width !== oldRect.width || newRect.height !== oldRect.height;
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}
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/**
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* Returns whether the layout should invalidate when the layout options change.
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* By default it invalidates when the object identity changes. Override this
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* method to optimize layout updates based on specific option changes.
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*/ shouldInvalidateLayoutOptions(newOptions, oldOptions) {
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return newOptions !== oldOptions;
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}
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/**
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* This method allows the layout to perform any pre-computation
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* it needs to in order to prepare LayoutInfos for retrieval.
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* Called by the virtualizer before `getVisibleLayoutInfos`
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* or `getLayoutInfo` are called.
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*/ update(invalidationContext) {}
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/** @private */ getItemRect(key) {
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return this.getLayoutInfo(key)?.rect ?? null;
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}
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/** @private */ getVisibleRect() {
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return this.virtualizer.visibleRect;
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}
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constructor(){
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/** The Virtualizer the layout is currently attached to. */ this.virtualizer = null;
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}
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}
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//# sourceMappingURL=Layout.cjs.map
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