[Discover] Show "unsaved changes" label when in unsaved state of save…

…d search (elastic#169548)

- Resolves elastic#135887

## Summary

This PR adds "Unsaved changes" badge to Discover for modified saved
searches. It also removes "Reset search" button from the histogram area.
Code for the badge is added to a new package
`@kbn/unsaved-changes-badge`.

<img width="600" alt="Screenshot 2023-10-23 at 18 05 34"
src="https://github.com/elastic/kibana/assets/1415710/ad200a28-79e1-4cc5-8e28-6352d4b85322">

![Oct-23-2023
18-06-39](https://github.com/elastic/kibana/assets/1415710/cacf4ff2-525c-4759-aba9-34ce75089ddd)


### Checklist

- [x] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [x] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))
- [x] This was checked for [cross-browser
compatibility](https://www.elastic.co/support/matrix#matrix_browsers)

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

.github/CODEOWNERS

@@ -789,6 +789,7 @@ packages/kbn-unified-field-list @elastic/kibana-data-discovery
 examples/unified_field_list_examples @elastic/kibana-data-discovery
 src/plugins/unified_histogram @elastic/kibana-data-discovery
 src/plugins/unified_search @elastic/kibana-visualizations
+packages/kbn-unsaved-changes-badge @elastic/kibana-data-discovery
 x-pack/plugins/upgrade_assistant @elastic/platform-deployment-management
 x-pack/plugins/uptime @elastic/obs-ux-infra_services-team
 x-pack/plugins/drilldowns/url_drilldown @elastic/appex-sharedux

.i18nrc.json

@@ -132,7 +132,8 @@
     "unifiedSearch": "src/plugins/unified_search",
     "unifiedFieldList": "packages/kbn-unified-field-list",
     "unifiedHistogram": "src/plugins/unified_histogram",
-    "unifiedDataTable": "packages/kbn-unified-data-table"
+    "unifiedDataTable": "packages/kbn-unified-data-table",
+    "unsavedChangesBadge": "packages/kbn-unsaved-changes-badge"
   },
   "translations": []
 }

examples/discover_customization_examples/public/plugin.tsx

@@ -163,6 +163,17 @@ export class DiscoverCustomizationExamplesPlugin implements Plugin {
               order: 300,
             },
           ],
+          getBadges: () => {
+            return [
+              {
+                data: {
+                  badgeText: 'Example badge',
+                  color: 'warning',
+                },
+                order: 10,
+              },
+            ];
+          },
         });
 
         customizations.set({

package.json

@@ -780,6 +780,7 @@
     "@kbn/unified-field-list-examples-plugin": "link:examples/unified_field_list_examples",
     "@kbn/unified-histogram-plugin": "link:src/plugins/unified_histogram",
     "@kbn/unified-search-plugin": "link:src/plugins/unified_search",
+    "@kbn/unsaved-changes-badge": "link:packages/kbn-unsaved-changes-badge",
     "@kbn/upgrade-assistant-plugin": "link:x-pack/plugins/upgrade_assistant",
     "@kbn/uptime-plugin": "link:x-pack/plugins/uptime",
     "@kbn/url-drilldown-plugin": "link:x-pack/plugins/drilldowns/url_drilldown",

packages/kbn-unified-data-table/src/hooks/use_row_heights_options.ts

@@ -85,6 +85,10 @@ export const useRowHeightsOptions = ({
       defaultHeight,
       lineHeight: rowLineHeight,
       onChange: ({ defaultHeight: newRowHeight }: EuiDataGridRowHeightsOptions) => {
+        if (newRowHeight === defaultHeight && typeof rowHeightState === 'undefined') {
+          // ignore, no changes required
+          return;
+        }
         const newSerializedRowHeight = serializeRowHeight(
           // pressing "Reset to default" triggers onChange with the same value
           newRowHeight === defaultHeight ? configRowHeight : newRowHeight

packages/kbn-unsaved-changes-badge/README.md

@@ -0,0 +1,8 @@
+# @kbn/unsaved-changes-badge
+
+A yellow "Unsaved changes" badge which can be found for example on Discover page.
+It supports callbacks to save or revert the changes.
+
+To integrate it into TopNav component, consider using `getTopNavUnsavedChangesBadge(...)` util and pass the result to `badges` prop of the top nav.
+
+There is also a standalone component `<UnsavedChangesBadge .../>`.

packages/kbn-unsaved-changes-badge/index.ts

@@ -0,0 +1,17 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export {
+  UnsavedChangesBadge,
+  type UnsavedChangesBadgeProps,
+} from './src/components/unsaved_changes_badge';
+
+export {
+  getTopNavUnsavedChangesBadge,
+  type TopNavUnsavedChangesBadgeParams,
+} from './src/utils/get_top_nav_unsaved_changes_badge';

packages/kbn-unsaved-changes-badge/jest.config.js

@@ -0,0 +1,13 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '../..',
+  roots: ['<rootDir>/packages/kbn-unsaved-changes-badge'],
+};

packages/kbn-unsaved-changes-badge/kibana.jsonc

@@ -0,0 +1,5 @@
+{
+  "type": "shared-common",
+  "id": "@kbn/unsaved-changes-badge",
+  "owner": "@elastic/kibana-data-discovery"
+}

packages/kbn-unsaved-changes-badge/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "@kbn/unsaved-changes-badge",
+  "private": true,
+  "version": "1.0.0",
+  "license": "SSPL-1.0 OR Elastic License 2.0",
+  "sideEffects": [
+    "*.css",
+    "*.scss"
+  ]
+}

packages/kbn-unsaved-changes-badge/src/components/unsaved_changes_badge/index.ts

@@ -0,0 +1,9 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export { UnsavedChangesBadge, type UnsavedChangesBadgeProps } from './unsaved_changes_badge';

packages/kbn-unsaved-changes-badge/src/components/unsaved_changes_badge/unsaved_changes_badge.test.tsx

@@ -0,0 +1,89 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import React from 'react';
+import { render, act, screen, waitFor } from '@testing-library/react';
+import { UnsavedChangesBadge } from './unsaved_changes_badge';
+
+describe('<UnsavedChangesBadge />', () => {
+  test('should render correctly', async () => {
+    const onRevert = jest.fn();
+    const { getByTestId, queryByTestId } = render(
+      <UnsavedChangesBadge badgeText="test" onRevert={onRevert} />
+    );
+    expect(getByTestId('unsavedChangesBadge')).toBeInTheDocument();
+
+    getByTestId('unsavedChangesBadge').click();
+    await waitFor(() => {
+      return Boolean(queryByTestId('unsavedChangesBadgeMenuPanel'));
+    });
+    expect(queryByTestId('revertUnsavedChangesButton')).toBeInTheDocument();
+    expect(queryByTestId('saveUnsavedChangesButton')).not.toBeInTheDocument();
+    expect(queryByTestId('saveUnsavedChangesAsButton')).not.toBeInTheDocument();
+
+    expect(onRevert).not.toHaveBeenCalled();
+
+    act(() => {
+      getByTestId('revertUnsavedChangesButton').click();
+    });
+    expect(onRevert).toHaveBeenCalled();
+  });
+
+  test('should show all menu items', async () => {
+    const onRevert = jest.fn().mockResolvedValue(true);
+    const onSave = jest.fn().mockResolvedValue(true);
+    const onSaveAs = jest.fn().mockResolvedValue(true);
+    const { getByTestId, queryByTestId, container } = render(
+      <UnsavedChangesBadge
+        badgeText="test"
+        onRevert={onRevert}
+        onSave={onSave}
+        onSaveAs={onSaveAs}
+      />
+    );
+
+    expect(container).toMatchSnapshot();
+
+    getByTestId('unsavedChangesBadge').click();
+    await waitFor(() => {
+      return Boolean(queryByTestId('unsavedChangesBadgeMenuPanel'));
+    });
+    expect(queryByTestId('revertUnsavedChangesButton')).toBeInTheDocument();
+    expect(queryByTestId('saveUnsavedChangesButton')).toBeInTheDocument();
+    expect(queryByTestId('saveUnsavedChangesAsButton')).toBeInTheDocument();
+
+    expect(screen.getByTestId('unsavedChangesBadgeMenuPanel')).toMatchSnapshot();
+  });
+
+  test('should call callbacks', async () => {
+    const onRevert = jest.fn().mockResolvedValue(true);
+    const onSave = jest.fn().mockResolvedValue(true);
+    const onSaveAs = jest.fn().mockResolvedValue(true);
+    const { getByTestId, queryByTestId } = render(
+      <UnsavedChangesBadge
+        badgeText="test"
+        onRevert={onRevert}
+        onSave={onSave}
+        onSaveAs={onSaveAs}
+      />
+    );
+    act(() => {
+      getByTestId('unsavedChangesBadge').click();
+    });
+    await waitFor(() => {
+      return Boolean(queryByTestId('unsavedChangesBadgeMenuPanel'));
+    });
+
+    expect(onSave).not.toHaveBeenCalled();
+
+    act(() => {
+      getByTestId('saveUnsavedChangesButton').click();
+    });
+    expect(onSave).toHaveBeenCalled();
+  });
+});