107 lines
4.9 KiB
TypeScript
107 lines
4.9 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed 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.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import type {ThemeInformation} from "./types";
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import type {ThemeManifest} from "../../../types/theme";
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import type {ILogItem} from "../../../../logging/types";
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import {ColorSchemePreference} from "./types";
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export class BuiltThemeParser {
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private _themeMapping: Record<string, ThemeInformation> = {};
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private _preferredColorScheme?: ColorSchemePreference;
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constructor(preferredColorScheme?: ColorSchemePreference) {
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this._preferredColorScheme = preferredColorScheme;
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}
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parse(manifest: ThemeManifest, manifestLocation: string, log: ILogItem) {
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log.wrap("BuiltThemeParser.parse", () => {
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/*
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After build has finished, the source section of each theme manifest
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contains `built-assets` which is a mapping from the theme-id to
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cssLocation of theme
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*/
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const builtAssets: Record<string, string> = manifest.source?.["built-assets"];
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const themeName = manifest.name;
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if (!themeName) {
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throw new Error(`Theme name not found in manifest at ${manifestLocation}`);
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}
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let defaultDarkVariant: any = {}, defaultLightVariant: any = {};
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for (let [themeId, cssLocation] of Object.entries(builtAssets)) {
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try {
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/**
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* This cssLocation is relative to the location of the manifest file.
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* So we first need to resolve it relative to the root of this hydrogen instance.
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*/
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cssLocation = new URL(cssLocation, new URL(manifestLocation, window.location.origin)).href;
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}
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catch {
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continue;
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}
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const variant = themeId.match(/.+-(.+)/)?.[1];
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const variantDetails = manifest.values?.variants[variant!];
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if (!variantDetails) {
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throw new Error(`Variant ${variant} is missing in manifest at ${manifestLocation}`);
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}
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const { name: variantName, default: isDefault, dark } = variantDetails;
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const themeDisplayName = `${themeName} ${variantName}`;
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if (isDefault) {
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/**
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* This is a default variant!
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* We'll add these to the themeMapping (separately) keyed with just the
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* theme-name (i.e "Element" instead of "Element Dark").
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* We need to be able to distinguish them from other variants!
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*
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* This allows us to render radio-buttons with "dark" and
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* "light" options.
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*/
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const defaultVariant = dark ? defaultDarkVariant : defaultLightVariant;
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defaultVariant.variantName = variantName;
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defaultVariant.id = themeId
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defaultVariant.cssLocation = cssLocation;
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continue;
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}
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// Non-default variants are keyed in themeMapping with "theme_name variant_name"
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// eg: "Element Dark"
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this._themeMapping[themeDisplayName] = {
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cssLocation,
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id: themeId
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};
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}
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if (defaultDarkVariant.id && defaultLightVariant.id) {
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/**
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* As mentioned above, if there's both a default dark and a default light variant,
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* add them to themeMapping separately.
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*/
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const defaultVariant = this._preferredColorScheme === ColorSchemePreference.Dark ? defaultDarkVariant : defaultLightVariant;
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this._themeMapping[themeName] = { dark: defaultDarkVariant, light: defaultLightVariant, default: defaultVariant };
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}
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else {
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/**
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* If only one default variant is found (i.e only dark default or light default but not both),
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* treat it like any other variant.
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*/
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const variant = defaultDarkVariant.id ? defaultDarkVariant : defaultLightVariant;
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this._themeMapping[`${themeName} ${variant.variantName}`] = { id: variant.id, cssLocation: variant.cssLocation };
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}
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});
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}
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get themeMapping(): Record<string, ThemeInformation> {
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return this._themeMapping;
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}
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}
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