1 files changed, 89 insertions, 0 deletions
diff --git a/toolkit/content/widgets/moz-toggle/moz-toggle.mjs b/toolkit/content/widgets/moz-toggle/moz-toggle.mjs
new file mode 100644
index 0000000000..5aee2a7d42
--- /dev/null
+++ b/toolkit/content/widgets/moz-toggle/moz-toggle.mjs
@@ -0,0 +1,89 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at htp://mozilla.org/MPL/2.0/. */
+
+import { html, ifDefined } from "../vendor/lit.all.mjs";
+import { MozLitElement } from "../lit-utils.mjs";
+
+export default class MozToggle extends MozLitElement {
+  static properties = {
+    pressed: { type: Boolean, reflect: true },
+    disabled: { type: Boolean, reflect: true },
+    label: { type: String },
+    description: { type: String },
+    ariaLabel: { type: String, attribute: "aria-label" },
+  };
+
+  static get queries() {
+    return {
+      buttonEl: "#moz-toggle-button",
+      labelEl: "#moz-toggle-label",
+      descriptionEl: "#moz-toggle-description",
+    };
+  }
+
+  // Use a relative URL in storybook to get faster reloads on style changes.
+  static stylesheetUrl = window.IS_STORYBOOK
+    ? "./moz-toggle/moz-toggle.css"
+    : "chrome://global/content/elements/moz-toggle.css";
+
+  constructor() {
+    super();
+    this.pressed = false;
+    this.disabled = false;
+  }
+
+  handleClick() {
+    this.pressed = !this.pressed;
+    this.dispatchOnUpdateComplete(
+      new CustomEvent("toggle", {
+        bubbles: true,
+        composed: true,
+      })
+    );
+  }
+
+  labelTemplate() {
+    if (this.label) {
+      return html`
+        <label id="moz-toggle-label" part="label" for="moz-toggle-button">
+          ${this.label}
+        </label>
+      `;
+    }
+    return "";
+  }
+
+  descriptionTemplate() {
+    if (this.description) {
+      return html`
+        <p id="moz-toggle-description" part="description">
+          ${this.description}
+        </p>
+      `;
+    }
+    return "";
+  }
+
+  render() {
+    const { pressed, disabled, description, ariaLabel, handleClick } = this;
+    return html`
+      <link rel="stylesheet" href=${this.constructor.stylesheetUrl} />
+      ${this.labelTemplate()} ${this.descriptionTemplate()}
+      <button
+        id="moz-toggle-button"
+        part="button"
+        type="button"
+        class="toggle-button"
+        ?disabled=${disabled}
+        aria-pressed=${pressed}
+        aria-label=${ifDefined(ariaLabel ?? undefined)}
+        aria-describedby=${ifDefined(
+          description ? "moz-toggle-description" : undefined
+        )}
+        @click=${handleClick}
+      ></button>
+    `;
+  }
+}
+customElements.define("moz-toggle", MozToggle);