1 files changed, 95 insertions, 0 deletions
diff --git a/devtools/client/accessibility/components/AuditProgressOverlay.js b/devtools/client/accessibility/components/AuditProgressOverlay.js
new file mode 100644
index 0000000000..e9f4291286
--- /dev/null
+++ b/devtools/client/accessibility/components/AuditProgressOverlay.js
@@ -0,0 +1,95 @@
+/* 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/. */
+
+"use strict";
+
+const React = require("resource://devtools/client/shared/vendor/react.js");
+const ReactDOM = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+const {
+  connect,
+} = require("resource://devtools/client/shared/vendor/react-redux.js");
+const { PluralForm } = require("resource://devtools/shared/plural-form.js");
+
+const {
+  L10N,
+} = require("resource://devtools/client/accessibility/utils/l10n.js");
+
+/**
+ * Helper functional component to render an accessible text progressbar.
+ * @param {Object} props
+ *        - id for the progressbar element
+ *        - valuetext for the progressbar element
+ */
+function TextProgressBar({ id, textStringKey }) {
+  const text = L10N.getStr(textStringKey);
+  return ReactDOM.span(
+    {
+      id,
+      key: id,
+      role: "progressbar",
+      "aria-valuetext": text,
+    },
+    text
+  );
+}
+
+class AuditProgressOverlay extends React.Component {
+  static get propTypes() {
+    return {
+      auditing: PropTypes.array.isRequired,
+      total: PropTypes.number,
+      percentage: PropTypes.number,
+    };
+  }
+
+  render() {
+    const { auditing, percentage, total } = this.props;
+    if (auditing.length === 0) {
+      return null;
+    }
+
+    const id = "audit-progress-container";
+
+    if (total == null) {
+      return TextProgressBar({
+        id,
+        textStringKey: "accessibility.progress.initializing",
+      });
+    }
+
+    if (percentage === 100) {
+      return TextProgressBar({
+        id,
+        textStringKey: "accessibility.progress.finishing",
+      });
+    }
+
+    const progressbarString = PluralForm.get(
+      total,
+      L10N.getStr("accessibility.progress.progressbar")
+    );
+
+    return ReactDOM.span(
+      {
+        id,
+        key: id,
+      },
+      progressbarString.replace("#1", total),
+      ReactDOM.progress({
+        max: 100,
+        value: percentage,
+        className: "audit-progress-progressbar",
+        "aria-labelledby": id,
+      })
+    );
+  }
+}
+
+const mapStateToProps = ({ audit: { auditing, progress } }) => {
+  const { total, percentage } = progress || {};
+  return { auditing, total, percentage };
+};
+
+module.exports = connect(mapStateToProps)(AuditProgressOverlay);