Project import generated by Copybara.

GitOrigin-RevId: d9e9e3fb4e31372ec1fb43b178994ca78fa8fe70
diff --git a/static_src/elements/framework/mr-issue-slo/mr-issue-slo.js b/static_src/elements/framework/mr-issue-slo/mr-issue-slo.js
new file mode 100644
index 0000000..5a3e42c
--- /dev/null
+++ b/static_src/elements/framework/mr-issue-slo/mr-issue-slo.js
@@ -0,0 +1,59 @@
+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import {LitElement, html, css} from 'lit-element';
+
+import 'elements/chops/chops-timestamp/chops-timestamp.js';
+import {determineSloStatus} from './slo-rules.js';
+
+/** @typedef {import('./slo-rules.js').SloStatus} SloStatus */
+
+/**
+ * `<mr-issue-slo>`
+ *
+ * A widget for showing the given issue's SLO status.
+ */
+export class MrIssueSlo extends LitElement {
+  /** @override */
+  static get styles() {
+    return css``;
+  }
+
+  /** @override */
+  render() {
+    const sloStatus = this._determineSloStatus();
+    if (!sloStatus) {
+      return html`N/A`;
+    }
+    if (!sloStatus.target) {
+      return html`Done`;
+    }
+    return html`
+      <chops-timestamp .timestamp=${sloStatus.target} short></chops-timestamp>`;
+  }
+
+  /**
+   * Wrapper around slo-rules.js determineSloStatus to allow tests to override
+   * the return value.
+   * @private
+   * @return {SloStatus}
+   */
+  _determineSloStatus() {
+    return this.issue ? determineSloStatus(this.issue) : null;
+  }
+
+  /** @override */
+  static get properties() {
+    return {
+      issue: {type: Object},
+    };
+  }
+  /** @override */
+  constructor() {
+    super();
+    /** @type {Issue} */
+    this.issue;
+  }
+}
+customElements.define('mr-issue-slo', MrIssueSlo);