83 lines
2.7 KiB
JavaScript
83 lines
2.7 KiB
JavaScript
// THEMES
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const STORAGE_KEY = "blazorbootstrap-theme";
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const DEFAULT_THEME = "light";
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const LIGHT_THEME = "light";
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const DARK_THEME = "dark";
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const SYSTEM_THEME = "system";
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const state = {
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chosenTheme: SYSTEM_THEME, // light|dark|system
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appliedTheme: DEFAULT_THEME // light|dark
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};
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const showActiveTheme = () => {
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let themeIndicatorEls = document.querySelectorAll(".blazorbootstrap-theme-indicator>i");
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if (themeIndicatorEls.length > 0) {
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themeIndicatorEls.forEach((el, index) => {
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if (state.chosenTheme === SYSTEM_THEME
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&& state.chosenTheme !== state.appliedTheme) {
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el.className = "bi bi-circle-half";
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}
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else if (state.appliedTheme === LIGHT_THEME) {
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el.className = "bi bi-sun-fill";
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} else if (state.appliedTheme === DARK_THEME) {
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el.className = "bi bi-moon-stars-fill";
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} else {
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el.className = "bi bi-circle-half";
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}
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});
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}
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let themeSwitcherItemEls = document.querySelectorAll(".blazorbootstrap-theme-item>button");
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if (themeSwitcherItemEls) {
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themeSwitcherItemEls.forEach((el) => {
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const bsThemeValue = el.dataset.bsThemeValue;
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const iEl = el.querySelector(".bi.bi-check2");
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if (state.chosenTheme === bsThemeValue) {
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el.classList.add("active");
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if (iEl)
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iEl.classList.remove("d-none");
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} else {
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el.classList.remove("active");
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if (iEl)
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iEl.classList.add("d-none");
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}
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});
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}
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};
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export function setTheme(dotNetHelper, theme, save = true) {
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state.chosenTheme = theme;
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state.appliedTheme = theme;
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if (theme === SYSTEM_THEME) {
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state.appliedTheme = window.matchMedia(`(prefers-color-scheme: ${DARK_THEME})`).matches ? DARK_THEME : LIGHT_THEME;
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}
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document.documentElement.setAttribute("data-bs-theme", state.appliedTheme);
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if (save) {
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window.localStorage.setItem(STORAGE_KEY, state.chosenTheme);
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}
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showActiveTheme();
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if (dotNetHelper)
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dotNetHelper.invokeMethodAsync("OnThemeChangedJS", state.appliedTheme);
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};
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export function initializeTheme(dotNetHelper) {
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const localTheme = window.localStorage.getItem(STORAGE_KEY);
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if (localTheme) {
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setTheme(dotNetHelper, localTheme, false);
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} else {
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setTheme(dotNetHelper, SYSTEM_THEME);
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}
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// register events
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window
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.matchMedia(`(prefers-color-scheme: ${DARK_THEME})`)
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.addEventListener("change", (event) => {
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//const theme = event.matches ? DARK_THEME : LIGHT_THEME;
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//setTheme(theme);
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setTheme(dotNetHelper, SYSTEM_THEME);
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});
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}
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