1 files changed, 105 insertions, 0 deletions
diff --git a/browser/components/aboutlogins/content/components/confirmation-dialog.mjs b/browser/components/aboutlogins/content/components/confirmation-dialog.mjs
new file mode 100644
index 0000000000..91a9c3a9d7
--- /dev/null
+++ b/browser/components/aboutlogins/content/components/confirmation-dialog.mjs
@@ -0,0 +1,105 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+import { setKeyboardAccessForNonDialogElements } from "../aboutLoginsUtils.mjs";
+
+export default class ConfirmationDialog extends HTMLElement {
+  constructor() {
+    super();
+    this._promise = null;
+  }
+
+  connectedCallback() {
+    if (this.shadowRoot) {
+      return;
+    }
+    let template = document.querySelector("#confirmation-dialog-template");
+    let shadowRoot = this.attachShadow({ mode: "open" });
+    document.l10n.connectRoot(shadowRoot);
+    shadowRoot.appendChild(template.content.cloneNode(true));
+
+    this._buttons = this.shadowRoot.querySelector(".buttons");
+    this._cancelButton = this.shadowRoot.querySelector(".cancel-button");
+    this._confirmButton = this.shadowRoot.querySelector(".confirm-button");
+    this._dismissButton = this.shadowRoot.querySelector(".dismiss-button");
+    this._message = this.shadowRoot.querySelector(".message");
+    this._overlay = this.shadowRoot.querySelector(".overlay");
+    this._title = this.shadowRoot.querySelector(".title");
+  }
+
+  handleEvent(event) {
+    switch (event.type) {
+      case "keydown":
+        if (event.repeat) {
+          // Prevent repeat keypresses from accidentally confirming the
+          // dialog since the confirmation button is focused by default.
+          event.preventDefault();
+          return;
+        }
+        if (event.key === "Escape" && !event.defaultPrevented) {
+          this.onCancel();
+        }
+        break;
+      case "click":
+        if (
+          event.target.classList.contains("cancel-button") ||
+          event.currentTarget.classList.contains("dismiss-button") ||
+          event.target.classList.contains("overlay")
+        ) {
+          this.onCancel();
+        } else if (event.target.classList.contains("confirm-button")) {
+          this.onConfirm();
+        }
+    }
+  }
+
+  hide() {
+    setKeyboardAccessForNonDialogElements(true);
+    this._cancelButton.removeEventListener("click", this);
+    this._confirmButton.removeEventListener("click", this);
+    this._dismissButton.removeEventListener("click", this);
+    this._overlay.removeEventListener("click", this);
+    window.removeEventListener("keydown", this);
+
+    this.hidden = true;
+  }
+
+  show({ title, message, confirmButtonLabel }) {
+    setKeyboardAccessForNonDialogElements(false);
+    this.hidden = false;
+
+    document.l10n.setAttributes(this._title, title);
+    document.l10n.setAttributes(this._message, message);
+    document.l10n.setAttributes(this._confirmButton, confirmButtonLabel);
+
+    this._cancelButton.addEventListener("click", this);
+    this._confirmButton.addEventListener("click", this);
+    this._dismissButton.addEventListener("click", this);
+    this._overlay.addEventListener("click", this);
+    window.addEventListener("keydown", this);
+
+    // For speed-of-use, focus the confirm button when the
+    // dialog loads. Showing the dialog itself provides enough
+    // of a buffer for accidental deletions.
+    this._confirmButton.focus();
+
+    this._promise = new Promise((resolve, reject) => {
+      this._resolve = resolve;
+      this._reject = reject;
+    });
+
+    return this._promise;
+  }
+
+  onCancel() {
+    this._reject();
+    this.hide();
+  }
+
+  onConfirm() {
+    this._resolve();
+    this.hide();
+  }
+}
+customElements.define("confirmation-dialog", ConfirmationDialog);