[discover] Enable data view editing from flyout (elastic#149453)

## Summary

Currently, changes to a data view require a round trip to management
when you're in discover. This PR allows editing of data views via flyout
from within discover.

Closes elastic#144801


### Checklist

Delete any items that are not applicable to this PR.

- [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

---------

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

src/plugins/discover/public/application/main/components/top_nav/discover_topnav.tsx

@@ -185,6 +185,16 @@ export const DiscoverTopNav = ({
     ]
   );
 
+  const onEditDataView = async (editedDataView: DataView) => {
+    if (!editedDataView.isPersisted()) {
+      await updateAdHocDataViewId(editedDataView);
+    } else {
+      stateContainer.actions.setDataView(editedDataView);
+    }
+    stateContainer.actions.loadDataViewList();
+    stateContainer.dataState.fetch();
+  };
+
   const updateSavedQueryId = (newSavedQueryId: string | undefined) => {
     const { appState, setAppState } = stateContainer;
     if (newSavedQueryId) {
@@ -220,6 +230,7 @@ export const DiscoverTopNav = ({
     textBasedLanguages: supportedTextBasedLanguages as DataViewPickerProps['textBasedLanguages'],
     adHocDataViews,
     savedDataViews,
+    onEditDataView,
   };
 
   const onTextBasedSavedAndExit = useCallback(

test/functional/apps/discover/group2/_data_view_edit.ts

@@ -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 expect from '@kbn/expect';
+import { FtrProviderContext } from '../ftr_provider_context';
+
+export default function ({ getService, getPageObjects }: FtrProviderContext) {
+  const esArchiver = getService('esArchiver');
+  const kibanaServer = getService('kibanaServer');
+  const security = getService('security');
+  const es = getService('es');
+  const retry = getService('retry');
+  const PageObjects = getPageObjects([
+    'common',
+    'unifiedSearch',
+    'discover',
+    'timePicker',
+    'dashboard',
+  ]);
+
+  describe('data view flyout', function () {
+    before(async () => {
+      await security.testUser.setRoles(['kibana_admin', 'test_logstash_reader']);
+      await kibanaServer.importExport.load('test/functional/fixtures/kbn_archiver/discover.json');
+      await esArchiver.loadIfNeeded('test/functional/fixtures/es_archiver/logstash_functional');
+
+      await PageObjects.timePicker.setDefaultAbsoluteRangeViaUiSettings();
+      await PageObjects.common.navigateToApp('discover');
+      await PageObjects.timePicker.setCommonlyUsedTime('This_week');
+    });
+
+    after(async () => {
+      await kibanaServer.savedObjects.cleanStandardList();
+      await esArchiver.unload('x-pack/test/functional/es_archives/logstash_functional');
+      await es.transport.request({
+        path: '/my-index-000001',
+        method: 'DELETE',
+      });
+      await es.transport.request({
+        path: '/my-index-000002',
+        method: 'DELETE',
+      });
+    });
+
+    it('create data view', async function () {
+      const initialPattern = 'my-index-';
+      await es.transport.request({
+        path: '/my-index-000001/_doc',
+        method: 'POST',
+        body: {
+          '@timestamp': new Date().toISOString(),
+          a: 'GET /search HTTP/1.1 200 1070000',
+        },
+      });
+
+      await es.transport.request({
+        path: '/my-index-000002/_doc',
+        method: 'POST',
+        body: {
+          '@timestamp': new Date().toISOString(),
+          b: 'GET /search HTTP/1.1 200 1070000',
+        },
+      });
+
+      await PageObjects.discover.createAdHocDataView(initialPattern, true);
+      expect(await PageObjects.discover.getCurrentlySelectedDataView()).to.be(`${initialPattern}*`);
+      await PageObjects.discover.waitUntilSidebarHasLoaded();
+
+      expect(await PageObjects.discover.getHitCountInt()).to.be(2);
+      expect((await PageObjects.discover.getAllFieldNames()).length).to.be(3);
+    });
+
+    it('update data view', async function () {
+      const updatedPattern = 'my-index-000001';
+      await PageObjects.discover.clickIndexPatternActions();
+      await PageObjects.unifiedSearch.editDataView(updatedPattern);
+
+      await retry.try(async () => {
+        expect(await PageObjects.discover.getHitCountInt()).to.be(1);
+      });
+      expect((await PageObjects.discover.getAllFieldNames()).length).to.be(2);
+    });
+  });
+}

test/functional/apps/discover/group2/index.ts

@@ -40,5 +40,6 @@ export default function ({ getService, loadTestFile }: FtrProviderContext) {
     loadTestFile(require.resolve('./_chart_hidden'));
     loadTestFile(require.resolve('./_context_encoded_url_params'));
     loadTestFile(require.resolve('./_hide_announcements'));
+    loadTestFile(require.resolve('./_data_view_edit'));
   });
 }

test/functional/page_objects/unified_search_page.ts

@@ -60,9 +60,24 @@ export class UnifiedSearchPageObject extends FtrService {
     await (await this.find.byClassName('indexPatternEditor__form')).click();
   }
 
-  public async createNewDataView(dataViewName: string, adHoc = false, hasTimeField = false) {
+  public async clickEditDataView() {
+    await this.retry.waitForWithTimeout('data create new to be visible', 15000, async () => {
+      return await this.testSubjects.isDisplayed('indexPattern-manage-field');
+    });
+    await this.testSubjects.click('indexPattern-manage-field');
+    await this.retry.waitForWithTimeout(
+      'index pattern editor form to be visible',
+      15000,
+      async () => {
+        return await (await this.find.byClassName('indexPatternEditor__form')).isDisplayed();
+      }
+    );
+    await (await this.find.byClassName('indexPatternEditor__form')).click();
+  }
+
+  public async createNewDataView(dataViewPattern: string, adHoc = false, hasTimeField = false) {
     await this.clickCreateNewDataView();
-    await this.testSubjects.setValue('createIndexPatternTitleInput', dataViewName, {
+    await this.testSubjects.setValue('createIndexPatternTitleInput', dataViewPattern, {
       clearWithKeyboard: true,
       typeCharByChar: true,
     });
@@ -75,6 +90,15 @@ export class UnifiedSearchPageObject extends FtrService {
     await this.testSubjects.click(adHoc ? 'exploreIndexPatternButton' : 'saveIndexPatternButton');
   }
 
+  public async editDataView(newPattern: string) {
+    await this.clickCreateNewDataView();
+    await this.testSubjects.setValue('createIndexPatternTitleInput', newPattern, {
+      clearWithKeyboard: true,
+      typeCharByChar: true,
+    });
+    await this.testSubjects.click('saveIndexPatternButton');
+  }
+
   public async isAdHocDataView() {
     const dataViewSwitcher = await this.testSubjects.find('discover-dataView-switch-link');
     const dataViewName = await dataViewSwitcher.getVisibleText();

x-pack/test/functional_with_es_ssl/apps/discover/search_source_alert.ts

@@ -289,8 +289,8 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
     await testSubjects.click('indexPattern-manage-field');
     await PageObjects.header.waitUntilLoadingHasFinished();
 
-    const titleElem = await testSubjects.find('currentIndexPatternTitle');
-    expect(await titleElem.getVisibleText()).to.equal(dataView);
+    const titleElem = await testSubjects.find('createIndexPatternTitleInput');
+    expect(await titleElem.getAttribute('value')).to.equal(dataView);
   };
 
   const checkUpdatedDataViewState = async (dataView: string) => {
@@ -302,8 +302,8 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
     await testSubjects.click('indexPattern-manage-field');
     await PageObjects.header.waitUntilLoadingHasFinished();
 
-    const titleElem = await testSubjects.find('currentIndexPatternTitle');
-    expect(await titleElem.getVisibleText()).to.equal(dataView);
+    const titleElem = await testSubjects.find('createIndexPatternTitleInput');
+    expect(await titleElem.getAttribute('value')).to.equal(dataView);
   };
 
   describe('Search source Alert', () => {