59 lines
1.7 KiB
TypeScript
59 lines
1.7 KiB
TypeScript
// Copyright: Ankitects Pty Ltd and contributors
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// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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interface AllowPropertiesBlockValues {
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[property: string]: string[];
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}
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type BlockProperties = string[];
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type StylingPredicate = (property: string, value: string) => boolean;
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const stylingNightMode: AllowPropertiesBlockValues = {
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"font-weight": [],
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"font-style": [],
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"text-decoration-line": [],
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};
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const stylingLightMode: AllowPropertiesBlockValues = {
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color: [],
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"background-color": ["transparent"],
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...stylingNightMode,
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};
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const stylingInternal: BlockProperties = [
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"background-color",
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"font-size",
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"font-family",
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];
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const allowPropertiesBlockValues = (
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allowBlock: AllowPropertiesBlockValues
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): StylingPredicate => (property: string, value: string): boolean =>
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Object.prototype.hasOwnProperty.call(allowBlock, property) &&
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!allowBlock[property].includes(value);
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const blockProperties = (block: BlockProperties): StylingPredicate => (
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property: string
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): boolean => !block.includes(property);
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const filterStyling = (predicate: (property: string, value: string) => boolean) => (
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element: HTMLElement
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): void => {
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for (const property of [...element.style]) {
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const value = element.style.getPropertyValue(name);
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if (!predicate(property, value)) {
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element.style.removeProperty(property);
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}
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}
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};
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export const filterStylingNightMode = filterStyling(
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allowPropertiesBlockValues(stylingNightMode)
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);
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export const filterStylingLightMode = filterStyling(
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allowPropertiesBlockValues(stylingLightMode)
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);
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export const filterStylingInternal = filterStyling(blockProperties(stylingInternal));
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