/*jshint esversion: 6 */
const themeToggle = document.createElement("template"); themeToggle.innerHTML = ' <style> *{ padding: 0; margin: 0; box-sizing: border-box; } :host{ cursor: pointer; --height: 2.5rem; --width: 2.5rem; } .theme-toggle { display: flex; position: relative; width: 1.2rem; height: 1.2rem; cursor: pointer; -webkit-tap-highlight-color: transparent; } .theme-toggle::after{ content: \'\'; position: absolute; height: var(--height); width: var(--width); top: 50%; left: 50%; opacity: 0; border-radius: 50%; pointer-events: none; transition: transform 0.3s, opacity 0.3s; transform: translate(-50%, -50%) scale(1.2); background-color: rgba(var(--text-color,inherit), 0.12); } :host(:focus-within) .theme-toggle{ outline: none; } :host(:focus-within) .theme-toggle::after{ opacity: 1; transform: translate(-50%, -50%) scale(1); } .icon { position: absolute; height: 100%; width: 100%; fill: rgba(var(--text-color,inherit), 1); transition: transform 0.3s, opacity 0.1s; }  .theme-switcher__checkbox { display: none; } :host([checked]) .moon-icon { transform: translateY(50%); opacity: 0; } :host(:not([checked])) .sun-icon { transform: translateY(50%); opacity: 0; } </style> <label class="theme-toggle" title="Change theme" tabindex="0"> <slot name="light-mode-icon"> <svg xmlns="http://www.w3.org/2000/svg" class="icon moon-icon" enable-background="new 0 0 24 24" height="24px" viewBox="0 0 24 24" width="24px" fill="#000000"><rect fill="none" height="24" width="24"/><path d="M9.37,5.51C9.19,6.15,9.1,6.82,9.1,7.5c0,4.08,3.32,7.4,7.4,7.4c0.68,0,1.35-0.09,1.99-0.27C17.45,17.19,14.93,19,12,19 c-3.86,0-7-3.14-7-7C5,9.07,6.81,6.55,9.37,5.51z M12,3c-4.97,0-9,4.03-9,9s4.03,9,9,9s9-4.03,9-9c0-0.46-0.04-0.92-0.1-1.36 c-0.98,1.37-2.58,2.26-4.4,2.26c-2.98,0-5.4-2.42-5.4-5.4c0-1.81,0.89-3.42,2.26-4.4C12.92,3.04,12.46,3,12,3L12,3z"/></svg> </slot> <slot name="dark-mode-icon"> <svg xmlns="http://www.w3.org/2000/svg" class="icon sun-icon" enable-background="new 0 0 24 24" height="24px" viewBox="0 0 24 24" width="24px" fill="#000000"><rect fill="none" height="24" width="24"/><path d="M12,9c1.65,0,3,1.35,3,3s-1.35,3-3,3s-3-1.35-3-3S10.35,9,12,9 M12,7c-2.76,0-5,2.24-5,5s2.24,5,5,5s5-2.24,5-5 S14.76,7,12,7L12,7z M2,13l2,0c0.55,0,1-0.45,1-1s-0.45-1-1-1l-2,0c-0.55,0-1,0.45-1,1S1.45,13,2,13z M20,13l2,0c0.55,0,1-0.45,1-1 s-0.45-1-1-1l-2,0c-0.55,0-1,0.45-1,1S19.45,13,20,13z M11,2v2c0,0.55,0.45,1,1,1s1-0.45,1-1V2c0-0.55-0.45-1-1-1S11,1.45,11,2z M11,20v2c0,0.55,0.45,1,1,1s1-0.45,1-1v-2c0-0.55-0.45-1-1-1C11.45,19,11,19.45,11,20z M5.99,4.58c-0.39-0.39-1.03-0.39-1.41,0 c-0.39,0.39-0.39,1.03,0,1.41l1.06,1.06c0.39,0.39,1.03,0.39,1.41,0s0.39-1.03,0-1.41L5.99,4.58z M18.36,16.95 c-0.39-0.39-1.03-0.39-1.41,0c-0.39,0.39-0.39,1.03,0,1.41l1.06,1.06c0.39,0.39,1.03,0.39,1.41,0c0.39-0.39,0.39-1.03,0-1.41 L18.36,16.95z M19.42,5.99c0.39-0.39,0.39-1.03,0-1.41c-0.39-0.39-1.03-0.39-1.41,0l-1.06,1.06c-0.39,0.39-0.39,1.03,0,1.41 s1.03,0.39,1.41,0L19.42,5.99z M7.05,18.36c0.39-0.39,0.39-1.03,0-1.41c-0.39-0.39-1.03-0.39-1.41,0l-1.06,1.06 c-0.39,0.39-0.39,1.03,0,1.41s1.03,0.39,1.41,0L7.05,18.36z"/></svg> </slot> </label>'; class ThemeToggle extends HTMLElement { constructor() { super(), this.attachShadow({ mode: "open" }).append(themeToggle.content.cloneNode(!0)), this.isChecked = !1, this.hasTheme = "light", this.toggleState = this.toggleState.bind(this), this.fireEvent = this.fireEvent.bind(this), this.handleThemeChange = this.handleThemeChange.bind(this) } static get observedAttributes() { return ["checked"] } daylight() { this.hasTheme = "light", document.body.dataset.theme = "light", this.setAttribute("aria-checked", "false") } nightlight() { this.hasTheme = "dark", document.body.dataset.theme = "dark", this.setAttribute("aria-checked", "true") } toggleState() { this.toggleAttribute("checked"), this.fireEvent() } handleKeyDown(e) { " " === e.key && this.toggleState() } handleThemeChange(e) { e.detail.theme !== this.hasTheme && ("dark" === e.detail.theme ? this.setAttribute("checked", "") : this.removeAttribute("checked")) } fireEvent() { this.dispatchEvent(new CustomEvent("themechange", { bubbles: !0, composed: !0, detail: { theme: this.hasTheme } })) } connectedCallback() { this.setAttribute("role", "switch"), this.setAttribute("aria-label", "theme toggle"), "dark" === localStorage.getItem(`${window.location.hostname}-theme`) ? (this.nightlight(), this.setAttribute("checked", "")) : "light" === localStorage.getItem(`${window.location.hostname}-theme`) ? (this.daylight(), this.removeAttribute("checked")) : window.matchMedia("(prefers-color-scheme: dark)").matches ? (this.nightlight(), this.setAttribute("checked", "")) : (this.daylight(), this.removeAttribute("checked")), this.addEventListener("click", this.toggleState), this.addEventListener("keydown", this.handleKeyDown), document.addEventListener("themechange", this.handleThemeChange) } disconnectedCallback() { this.removeEventListener("click", this.toggleState), this.removeEventListener("keydown", this.handleKeyDown), document.removeEventListener("themechange", this.handleThemeChange) } attributeChangedCallback(e, t, n) { "checked" === e && (this.hasAttribute("checked") ? (this.nightlight(), localStorage.setItem(`${window.location.hostname}-theme`, "dark")) : (this.daylight(), localStorage.setItem(`${window.location.hostname}-theme`, "light"))) } } window.customElements.define("theme-toggle", ThemeToggle);