1 files changed, 63 insertions, 0 deletions
diff --git a/devtools/client/performance-new/components/panel/Description.js b/devtools/client/performance-new/components/panel/Description.js
new file mode 100644
index 0000000000..f2fb3620f0
--- /dev/null
+++ b/devtools/client/performance-new/components/panel/Description.js
@@ -0,0 +1,63 @@
+/* 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/. */
+// @ts-check
+
+/**
+ * @typedef {{}} Props - This is an empty object.
+ */
+
+"use strict";
+
+const {
+  PureComponent,
+  createFactory,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  div,
+  button,
+  p,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+const Localized = createFactory(
+  require("resource://devtools/client/shared/vendor/fluent-react.js").Localized
+);
+
+/**
+ * This component provides a helpful description for what is going on in the component
+ * and provides some external links.
+ * @extends {React.PureComponent<Props>}
+ */
+class Description extends PureComponent {
+  /**
+   * @param {React.MouseEvent<HTMLButtonElement>} event
+   */
+  handleLinkClick = event => {
+    const {
+      openDocLink,
+    } = require("resource://devtools/client/shared/link.js");
+
+    /** @type HTMLButtonElement */
+    const target = /** @type {any} */ (event.target);
+
+    openDocLink(target.value, {});
+  };
+
+  render() {
+    return div(
+      { className: "perf-description" },
+      Localized(
+        {
+          id: "perftools-description-intro",
+          a: button({
+            className: "perf-external-link",
+            onClick: this.handleLinkClick,
+            value: "https://profiler.firefox.com",
+          }),
+        },
+        p({})
+      )
+    );
+  }
+}
+
+module.exports = Description;