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/**
* Theme — PrimeReact theming provider.
*
* light, dark, big → lara-light-blue / lara-dark-blue
* compact, light-compact → saga-blue / vela-blue
* dark-compact → vela-blue / saga-blue
*
* CSS for PrimeReact themes must be loaded by the consumer. Use
* PRIMEREACT_PALETTE_THEMES to look up which CSS file to load for a
* given palette + dark-mode combination.
*/
import 'primeflex/primeflex.css';
import 'primeicons/primeicons.css';
import 'primereact/resources/primereact.min.css';
import './glass.css';
import './wood-assets.css';
import './wood.css';
import { addLocale, locale } from '../../primereact/index.js';
import { updateGlassReflections } from './glassReflection.js';
import {
FALLBACK_THEME_OPTION,
loadThemeCss,
paletteOfFolder,
resolveThemeFolder,
themeOptionByFolder,
themeOptionById,
themeOptionByName,
type IPrimeThemeOption,
} from './themeRegistry.js';
import { createContext, use, useCallback, useEffect, useRef, type ReactNode } from 'react';
import { useAppStore } from '../../state/appStore.js';
export type PaletteType = 'light' | 'dark';
export type ThemeType = 'big' | 'compact';
/**
* Visual variant layered on top of the selected palette theme:
* - `standard` (default) — the plain PrimeReact theme.
* - `glass` — high-contrast grayscale glass look layered on the palette
* theme (matte slate canvas, glossy charcoal panels with sharp skewed
* glares + 3D bevels, dark glass input plates, rectangular polished glass
* buttons, grayscale checkboxes and table rows). All glass rules live in
* `glass.css` and are scoped under the `blong-app-glass` class Theme adds
* to its wrapper, so the base theme stays intact unless `variant: 'glass'`
* is requested.
*/
export type ThemeVariant = 'standard' | 'glass' | 'wood';
/**
* Maps each visual variant to a CSS file + the root marker used to style
* portal overlays that mount outside the `.blong-app-*` wrapper.
*/
const VARIANT_CSS_CLASS: Record<Exclude<ThemeVariant, 'standard'>, string> = {
glass: 'blong-app-glass',
wood: 'blong-app-wood',
};
/**
* Maps each palette to the PrimeReact theme name for light and dark modes.
* Theme CSS is at: `primereact/resources/themes/<name>/theme.css`
*/
export const PRIMEREACT_PALETTE_THEMES: Record<ThemeType, Record<PaletteType, string>> = {
big: {light: 'lara-light-blue', dark: 'lara-dark-blue'},
compact: {light: 'saga-blue', dark: 'vela-blue'},
};
/** Font size in px for each palette — compact variants use 14, others 16. */
export const PALETTE_FONT_SIZES: Record<ThemeType, number> = {
big: 16,
compact: 14,
};
export interface IThemeConfig {
type?: ThemeType;
palette?: PaletteType;
direction?: 'ltr' | 'rtl';
primary?: string;
// Visual variant layered on top of the base palette theme. Defaults to 'standard'.
variant?: ThemeVariant;
/**
* Explicit theme selection — either a theme-option id (`lara-blue`,
* `glass`) or a PrimeReact theme folder name (`lara-dark-blue`). When set
* it overrides the `type` + `palette` mapping below. The theme switcher
* writes its choice to the app store, which outranks this default.
*/
name?: string;
/**
* Whether to render the theme switcher in the portal menubar.
* Defaults to `true` — set `false` to hide it for an app.
*/
switcher?: boolean;
/** Override the font size (px). Defaults to palette-based size. */
fontSize?: number;
/**
* Custom PrimeReact locale data per language code.
* Each entry is registered via addLocale(lang, options).
* Only needed for locales not already bundled with PrimeReact.
*/
languages?: Record<string, object>;
}
/**
* Effective theme state exposed to descendants (notably the theme switcher in
* the portal menubar). `selectTheme` / `selectPalette` persist the choice via
* `appStore.setTheme`.
*/
export interface IThemeContextValue {
/** Effective configuration (prop defaults merged with the user's choice). */
config: IThemeConfig;
/** Resolved theme-option id. */
optionId: string;
/** Resolved theme-option descriptor. */
option: IPrimeThemeOption;
/** Effective palette. */
palette: PaletteType;
/** True when the current theme offers both light and dark variants. */
paletteToggle: boolean;
/** Whether the theme switcher should render (`IThemeConfig.switcher`). */
switcher: boolean;
/** Select a theme option by id. */
selectTheme: (themeId: string) => void;
/** Select the light/dark palette for the current theme. */
selectPalette: (palette: PaletteType) => void;
}
const ThemeContext = createContext<IThemeContextValue | null>(null);
/**
* Access the effective theme and the switcher setters from any descendant of
* `<Theme>` (e.g. the portal menubar's theme switcher).
*/
export function useTheme(): IThemeContextValue {
const context = use(ThemeContext);
Iif (!context) throw new Error('useTheme must be used within <Theme>');
return context;
}
interface IThemeProps {
theme: IThemeConfig;
children: ReactNode;
}
export function Theme({theme, children}: IThemeProps) {
const appRef = useRef<HTMLDivElement>(null);
const language = useAppStore(s => s.language);
useEffect(() => {
if (theme.languages) {
for (const [lang, options] of Object.entries(theme.languages)) {
addLocale(lang, options as Parameters<typeof addLocale>[1]);
}
}
}, [theme.languages]);
useEffect(() => {
locale(language && language !== 'en' ? language : 'en');
}, [language]);
const palette = theme.palette ?? 'dark';
const type = theme.type ?? 'compact';
const selection = useAppStore(s => s.theme);
const setTheme = useAppStore(s => s.setTheme);
// Base theme from the config: the legacy type/palette mapping, optionally
// overridden by an explicit `name` (theme-option id or folder name).
const defaultFolder = PRIMEREACT_PALETTE_THEMES[type][palette];
const named = theme.name ? themeOptionByName(theme.name) : undefined;
const baseFolder =
named && !named.option.variant ? resolveThemeFolder(named.option, named.palette) : defaultFolder;
const basePalette = named?.palette ?? paletteOfFolder(defaultFolder) ?? palette;
// The option implied by the config — used until the user picks one. The
// `variant` prop keeps working for callers that only set glass/wood.
const configOption: IPrimeThemeOption =
named?.option ??
(theme.variant && theme.variant !== 'standard'
? themeOptionById(theme.variant)
: undefined) ??
themeOptionByFolder(baseFolder) ??
FALLBACK_THEME_OPTION;
// The user's explicit choice (theme switcher) outranks the configured default.
const option =
(selection.themeId ? themeOptionById(selection.themeId) : undefined) ?? configOption;
const isBlongVariant = option.variant !== undefined;
const paletteToggle = Boolean(option.light && option.dark);
const preferredPalette = selection.palette ?? basePalette;
const activePalette: PaletteType = isBlongVariant
? basePalette
: option.light && option.dark
? preferredPalette
: option.dark
? 'dark'
: 'light';
const variant: ThemeVariant = option.variant ?? 'standard';
const folder = isBlongVariant ? baseFolder : resolveThemeFolder(option, activePalette);
const selectTheme = useCallback(
(themeId: string) => {
const next = themeOptionById(themeId);
Iif (!next) return;
Iif (next.variant) {
setTheme({themeId});
return;
}
const nextPalette: PaletteType =
next.light && next.dark ? activePalette : next.dark ? 'dark' : 'light';
setTheme({themeId, palette: nextPalette});
},
[setTheme, activePalette],
);
const selectPalette = useCallback(
(nextPalette: PaletteType) => setTheme({themeId: option.id, palette: nextPalette}),
[setTheme, option.id],
);
// Portal overlays (dropdowns, panels) mount OUTSIDE the `.blong-app-*`
// wrapper, so expose a root marker class that the variant CSS can scope
// those overlays to (e.g. `blong-theme-glass`).
const rootMarker =
variant === 'standard' ? null : `blong-theme-${variant}`;
useEffect(() => {
if (!rootMarker) return undefined;
const root = document.documentElement;
root.classList.add(rootMarker);
return () => root.classList.remove(rootMarker);
}, [rootMarker]);
// Glass variant: keep each panel's `--glare-shift` in sync with its
// vertical position so the single light ray stays continuous (no
// hardcoded per-card classes). Disposed automatically when the variant
// changes or the component unmounts.
const glassActive = variant === 'glass';
useEffect(() => {
if (!glassActive) return undefined;
const node = appRef.current;
Iif (!node) return undefined;
// Recompute each panel's `--glare-shift` from its vertical position so
// the single light ray stays continuous across the whole layout. A
// short interval + resize listener keep it correct even when panels
// mount asynchronously (e.g. after auth/session restore in a story).
updateGlassReflections(node);
const refresh = () => updateGlassReflections(node);
const interval = window.setInterval(refresh, 250);
window.addEventListener('resize', refresh);
window.addEventListener('load', refresh);
return () => {
window.clearInterval(interval);
window.removeEventListener('resize', refresh);
window.removeEventListener('load', refresh);
};
}, [glassActive]);
useEffect(() => {
const fontSize = theme.fontSize ?? PALETTE_FONT_SIZES[type];
// Apply direction
document.documentElement.dir = theme.direction ?? 'ltr';
document.documentElement.lang = theme.direction === 'rtl' ? 'ar' : 'en';
// Apply font size
document.documentElement.style.fontSize = `${fontSize}px`;
// Apply custom primary color via CSS variable
Iif (theme.primary) {
document.documentElement.style.setProperty('--p-primary-color', theme.primary);
}
}, [theme.direction, theme.fontSize, theme.primary, type]);
// Load the active PrimeReact theme into a single <style> element. Writing
// the CSS in place keeps exactly one theme active — a side-effect CSS import
// is only ever injected once, so revisiting a theme would otherwise keep
// losing to a later-loaded one.
useEffect(() => {
let cancelled = false;
loadThemeCss(folder)
.then(css => {
if (cancelled || !css || typeof document === 'undefined') return;
let element = document.getElementById('blong-prime-theme') as HTMLStyleElement | null;
if (!element) {
element = document.createElement('style');
element.id = 'blong-prime-theme';
document.head.appendChild(element);
}
element.textContent = css;
})
.catch(() => {
// Keep the previously applied theme if a chunk fails to load.
});
return () => {
cancelled = true;
};
}, [folder]);
const contextValue: IThemeContextValue = {
config: {...theme, palette: activePalette, variant},
optionId: option.id,
option,
palette: activePalette,
paletteToggle,
switcher: theme.switcher ?? true,
selectTheme,
selectPalette,
};
return (
<ThemeContext value={contextValue}>
<div
ref={appRef}
className={[
'blong-app',
`blong-app-${activePalette}`,
`blong-app-${type}`,
variant !== 'standard' ? VARIANT_CSS_CLASS[variant] : '',
theme.direction === 'rtl' ? 'blong-app-rtl' : '',
]
.filter(Boolean)
.join(' ')}
dir={theme.direction ?? 'ltr'}
>
{children}
</div>
</ThemeContext>
);
}
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