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lens/src/renderer/theme.store.ts
2022-01-05 11:35:44 -05:00

107 lines
3.5 KiB
TypeScript

/**
* Copyright (c) 2021 OpenLens Authors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
import { computed, makeObservable, observable, reaction } from "mobx";
import { autoBind, Singleton } from "./utils";
import { UserStore } from "../common/user-store";
import logger from "../main/logger";
import lensDarkThemeJson from "./themes/lens-dark.json";
import lensLightThemeJson from "./themes/lens-light.json";
import type { SelectOption } from "./components/select";
import type { MonacoEditorProps } from "./components/monaco-editor";
import { defaultTheme } from "../common/vars";
export type ThemeId = string;
export interface Theme {
name: string;
type: "dark" | "light";
colors: Record<string, string>;
description: string;
author: string;
monacoTheme: MonacoEditorProps["theme"];
}
export class ThemeStore extends Singleton {
protected styles: HTMLStyleElement;
// bundled themes from `themes/${themeId}.json`
private themes = observable.map<ThemeId, Theme>({
"lens-dark": lensDarkThemeJson as Theme,
"lens-light": lensLightThemeJson as Theme,
});
@computed get activeThemeId(): string {
return UserStore.getInstance().colorTheme;
}
@computed get activeTheme(): Theme {
return this.themes.get(this.activeThemeId) ?? this.themes.get(defaultTheme);
}
@computed get themeOptions(): SelectOption<string>[] {
return Array.from(this.themes).map(([themeId, theme]) => ({
label: theme.name,
value: themeId,
}));
}
constructor() {
super();
makeObservable(this);
autoBind(this);
// auto-apply active theme
reaction(() => this.activeThemeId, themeId => {
try {
this.applyTheme(this.getThemeById(themeId));
} catch (err) {
logger.error(err);
UserStore.getInstance().resetTheme();
}
}, {
fireImmediately: true,
});
}
getThemeById(themeId: ThemeId): Theme {
return this.themes.get(themeId);
}
protected applyTheme(theme: Theme) {
if (!this.styles) {
this.styles = document.createElement("style");
this.styles.id = "lens-theme";
document.head.append(this.styles);
}
const cssVars = Object.entries(theme.colors).map(([cssName, color]) => {
return `--${cssName}: ${color};`;
});
this.styles.textContent = `:root {\n${cssVars.join("\n")}}`;
// Adding universal theme flag which can be used in component styles
const body = document.querySelector("body");
body.classList.toggle("theme-light", theme.type === "light");
}
}