From 43d55d95dd66c9c8a56d5344d17bf5caba775fae Mon Sep 17 00:00:00 2001
From: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>
Date: Tue, 7 Sep 2021 12:15:29 -0400
Subject: [PATCH] add hasHeaderBanner$ API to chrome (#111248) (#111391)

* add hasHeaderBanner$ API to chrome

* update generated doc

Co-authored-by: Pierre Gayvallet <pierre.gayvallet@gmail.com>
---
 ...-core-public.chromestart.hasheaderbanner_.md | 17 +++++++++++++++++
 .../kibana-plugin-core-public.chromestart.md    |  1 +
 .../kibana-plugin-core-public.doclinksstart.md  |  4 +---
 src/core/public/chrome/chrome_service.mock.ts   |  2 ++
 src/core/public/chrome/chrome_service.test.ts   | 13 +++++++++++++
 src/core/public/chrome/chrome_service.tsx       |  7 +++++++
 src/core/public/chrome/types.ts                 |  5 +++++
 src/core/public/public.api.md                   |  1 +
 8 files changed, 47 insertions(+), 3 deletions(-)
 create mode 100644 docs/development/core/public/kibana-plugin-core-public.chromestart.hasheaderbanner_.md

diff --git a/docs/development/core/public/kibana-plugin-core-public.chromestart.hasheaderbanner_.md b/docs/development/core/public/kibana-plugin-core-public.chromestart.hasheaderbanner_.md
new file mode 100644
index 000000000000..6ce0671eb523
--- /dev/null
+++ b/docs/development/core/public/kibana-plugin-core-public.chromestart.hasheaderbanner_.md
@@ -0,0 +1,17 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-public](./kibana-plugin-core-public.md) &gt; [ChromeStart](./kibana-plugin-core-public.chromestart.md) &gt; [hasHeaderBanner$](./kibana-plugin-core-public.chromestart.hasheaderbanner_.md)
+
+## ChromeStart.hasHeaderBanner$() method
+
+Get an observable of the current header banner presence state.
+
+<b>Signature:</b>
+
+```typescript
+hasHeaderBanner$(): Observable<boolean>;
+```
+<b>Returns:</b>
+
+`Observable<boolean>`
+
diff --git a/docs/development/core/public/kibana-plugin-core-public.chromestart.md b/docs/development/core/public/kibana-plugin-core-public.chromestart.md
index 7285b4a00a0e..ffc77dd653c0 100644
--- a/docs/development/core/public/kibana-plugin-core-public.chromestart.md
+++ b/docs/development/core/public/kibana-plugin-core-public.chromestart.md
@@ -57,6 +57,7 @@ core.chrome.setHelpExtension(elem => {
 |  [getHelpExtension$()](./kibana-plugin-core-public.chromestart.gethelpextension_.md) | Get an observable of the current custom help conttent |
 |  [getIsNavDrawerLocked$()](./kibana-plugin-core-public.chromestart.getisnavdrawerlocked_.md) | Get an observable of the current locked state of the nav drawer. |
 |  [getIsVisible$()](./kibana-plugin-core-public.chromestart.getisvisible_.md) | Get an observable of the current visibility state of the chrome. |
+|  [hasHeaderBanner$()](./kibana-plugin-core-public.chromestart.hasheaderbanner_.md) | Get an observable of the current header banner presence state. |
 |  [setBadge(badge)](./kibana-plugin-core-public.chromestart.setbadge.md) | Override the current badge |
 |  [setBreadcrumbs(newBreadcrumbs)](./kibana-plugin-core-public.chromestart.setbreadcrumbs.md) | Override the current set of breadcrumbs |
 |  [setBreadcrumbsAppendExtension(breadcrumbsAppendExtension)](./kibana-plugin-core-public.chromestart.setbreadcrumbsappendextension.md) | Mount an element next to the last breadcrumb |
diff --git a/docs/development/core/public/kibana-plugin-core-public.doclinksstart.md b/docs/development/core/public/kibana-plugin-core-public.doclinksstart.md
index 908615b3220d..7d862f50bba1 100644
--- a/docs/development/core/public/kibana-plugin-core-public.doclinksstart.md
+++ b/docs/development/core/public/kibana-plugin-core-public.doclinksstart.md
@@ -17,7 +17,5 @@ export interface DocLinksStart
 |  --- | --- | --- |
 |  [DOC\_LINK\_VERSION](./kibana-plugin-core-public.doclinksstart.doc_link_version.md) | <code>string</code> |  |
 |  [ELASTIC\_WEBSITE\_URL](./kibana-plugin-core-public.doclinksstart.elastic_website_url.md) | <code>string</code> |  |
-|  [links](./kibana-plugin-core-public.doclinksstart.links.md) | <code>{</code><br/><code>        readonly settings: string;</code><br/><code>        readonly apm: {</code><br/><code>            readonly kibanaSettings: string;</code><br/><code>            readonly supportedServiceMaps: string;</code><br/><code>            readonly customLinks: string;</code><br/><code>        };</code><br/><code>        readonly canvas: {</code><br/><code>            readonly guide: string;</code><br/><code>        };</code><br/><code>        readonly dashboard: {</code><br/><code>            readonly guide: string;</code><br/><code>            readonly drilldowns: string;</code><br/><code>            readonly drilldownsTriggerPicker: string;</code><br/><code>            readonly urlDrilldownTemplateSyntax: string;</code><br/><code>            readonly urlDrilldownVariables: string;</code><br/><code>        };</code><br/><code>        readonly discover: Record&lt;string, string&gt;;</code><br/><code>        readonly filebeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly installation: string;</code><br/><code>            readonly configuration: string;</code><br/><code>            readonly elasticsearchOutput: string;</code><br/><code>            readonly elasticsearchModule: string;</code><br/><code>            readonly startup: string;</code><br/><code>            readonly exportedFields: string;</code><br/><code>            readonly suricataModule: string;</code><br/><code>            readonly zeekModule: string;</code><br/><code>        };</code><br/><code>        readonly auditbeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly auditdModule: string;</code><br/><code>            readonly systemModule: string;</code><br/><code>        };</code><br/><code>        readonly metricbeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly configure: string;</code><br/><code>            readonly httpEndpoint: string;</code><br/><code>            readonly install: string;</code><br/><code>            readonly start: string;</code><br/><code>        };</code><br/><code>        readonly enterpriseSearch: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly appSearchBase: string;</code><br/><code>            readonly workplaceSearchBase: string;</code><br/><code>        };</code><br/><code>        readonly heartbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly libbeat: {</code><br/><code>            readonly getStarted: string;</code><br/><code>        };</code><br/><code>        readonly logstash: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly functionbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly winlogbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly aggs: {</code><br/><code>            readonly composite: string;</code><br/><code>            readonly composite_missing_bucket: string;</code><br/><code>            readonly date_histogram: string;</code><br/><code>            readonly date_range: string;</code><br/><code>            readonly date_format_pattern: string;</code><br/><code>            readonly filter: string;</code><br/><code>            readonly filters: string;</code><br/><code>            readonly geohash_grid: string;</code><br/><code>            readonly histogram: string;</code><br/><code>            readonly ip_range: string;</code><br/><code>            readonly range: string;</code><br/><code>            readonly significant_terms: string;</code><br/><code>            readonly terms: string;</code><br/><code>            readonly avg: string;</code><br/><code>            readonly avg_bucket: string;</code><br/><code>            readonly max_bucket: string;</code><br/><code>            readonly min_bucket: string;</code><br/><code>            readonly sum_bucket: string;</code><br/><code>            readonly cardinality: string;</code><br/><code>            readonly count: string;</code><br/><code>            readonly cumulative_sum: string;</code><br/><code>            readonly derivative: string;</code><br/><code>            readonly geo_bounds: string;</code><br/><code>            readonly geo_centroid: string;</code><br/><code>            readonly max: string;</code><br/><code>            readonly median: string;</code><br/><code>            readonly min: string;</code><br/><code>            readonly moving_avg: string;</code><br/><code>            readonly percentile_ranks: string;</code><br/><code>            readonly serial_diff: string;</code><br/><code>            readonly std_dev: string;</code><br/><code>            readonly sum: string;</code><br/><code>            readonly top_hits: string;</code><br/><code>        };</code><br/><code>        readonly runtimeFields: {</code><br/><code>            readonly overview: string;</code><br/><code>            readonly mapping: string;</code><br/><code>        };</code><br/><code>        readonly scriptedFields: {</code><br/><code>            readonly scriptFields: string;</code><br/><code>            readonly scriptAggs: string;</code><br/><code>            readonly painless: string;</code><br/><code>            readonly painlessApi: string;</code><br/><code>            readonly painlessLangSpec: string;</code><br/><code>            readonly painlessSyntax: string;</code><br/><code>            readonly painlessWalkthrough: string;</code><br/><code>            readonly luceneExpressions: string;</code><br/><code>        };</code><br/><code>        readonly search: {</code><br/><code>            readonly sessions: string;</code><br/><code>            readonly sessionLimits: string;</code><br/><code>        };</code><br/><code>        readonly indexPatterns: {</code><br/><code>            readonly introduction: string;</code><br/><code>            readonly fieldFormattersNumber: string;</code><br/><code>            readonly fieldFormattersString: string;</code><br/><code>            readonly runtimeFields: string;</code><br/><code>        };</code><br/><code>        readonly addData: string;</code><br/><code>        readonly kibana: string;</code><br/><code>        readonly upgradeAssistant: string;</code><br/><code>        readonly rollupJobs: string;</code><br/><code>        readonly elasticsearch: Record&lt;string, string&gt;;</code><br/><code>        readonly siem: {</code><br/><code>            readonly privileges: string;</code><br/><code>            readonly guide: string;</code><br/><code>            readonly gettingStarted: string;</code><br/><code>            readonly ml: string;</code><br/><code>            readonly ruleChangeLog: string;</code><br/><code>            readonly detectionsReq: string;</code><br/><code>            readonly networkMap: string;</code><br/><code>        };</code><br/><code>        readonly query: {</code><br/><code>            readonly eql: string;</code><br/><code>            readonly kueryQuerySyntax: string;</code><br/><code>            readonly luceneQuerySyntax: string;</code><br/><code>            readonly percolate: string;</code><br/><code>            readonly queryDsl: string;</code><br/><code>            readonly autocompleteChanges: string;</code><br/><code>        };</code><br/><code>        readonly date: {</code><br/><code>            readonly dateMath: string;</code><br/><code>            readonly dateMathIndexNames: string;</code><br/><code>        };</code><br/><code>        readonly management: Record&lt;string, string&gt;;</code><br/><code>        readonly ml: Record&lt;string, string&gt;;</code><br/><code>        readonly transforms: Record&lt;string, string&gt;;</code><br/><code>        readonly visualize: Record&lt;string, string&gt;;</code><br/><code>        readonly apis: Readonly&lt;{</code><br/><code>            bulkIndexAlias: string;</code><br/><code>            byteSizeUnits: string;</code><br/><code>            createAutoFollowPattern: string;</code><br/><code>            createFollower: string;</code><br/><code>            createIndex: string;</code><br/><code>            createSnapshotLifecyclePolicy: string;</code><br/><code>            createRoleMapping: string;</code><br/><code>            createRoleMappingTemplates: string;</code><br/><code>            createRollupJobsRequest: string;</code><br/><code>            createApiKey: string;</code><br/><code>            createPipeline: string;</code><br/><code>            createTransformRequest: string;</code><br/><code>            cronExpressions: string;</code><br/><code>            executeWatchActionModes: string;</code><br/><code>            indexExists: string;</code><br/><code>            openIndex: string;</code><br/><code>            putComponentTemplate: string;</code><br/><code>            painlessExecute: string;</code><br/><code>            painlessExecuteAPIContexts: string;</code><br/><code>            putComponentTemplateMetadata: string;</code><br/><code>            putSnapshotLifecyclePolicy: string;</code><br/><code>            putIndexTemplateV1: string;</code><br/><code>            putWatch: string;</code><br/><code>            simulatePipeline: string;</code><br/><code>            timeUnits: string;</code><br/><code>            updateTransform: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly observability: Record&lt;string, string&gt;;</code><br/><code>        readonly alerting: Record&lt;string, string&gt;;</code><br/><code>        readonly maps: Record&lt;string, string&gt;;</code><br/><code>        readonly monitoring: Record&lt;string, string&gt;;</code><br/><code>        readonly security: Readonly&lt;{</code><br/><code>            apiKeyServiceSettings: string;</code><br/><code>            clusterPrivileges: string;</code><br/><code>            elasticsearchSettings: string;</code><br/><code>            elasticsearchEnableSecurity: string;</code><br/><code>            indicesPrivileges: string;</code><br/><code>            kibanaTLS: string;</code><br/><code>            kibanaPrivileges: string;</code><br/><code>            mappingRoles: string;</code><br/><code>            mappingRolesFieldRules: string;</code><br/><code>            runAsPrivilege: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly watcher: Record&lt;string, string&gt;;</code><br/><code>        readonly ccs: Record&lt;string, string&gt;;</code><br/><code>        readonly plugins: Record&lt;string, string&gt;;</code><br/><code>        readonly snapshotRestore: Record&lt;string, string&gt;;</code><br/><code>        readonly ingest: Record&lt;string, string&gt;;</code><br/><code>        readonly fleet: Readonly&lt;{</code><br/><code>            guide: string;</code><br/><code>            fleetServer: string;</code><br/><code>            fleetServerAddFleetServer: string;</code><br/><code>            settings: string;</code><br/><code>            settingsFleetServerHostSettings: string;</code><br/><code>            troubleshooting: string;</code><br/><code>            elasticAgent: string;</code><br/><code>            datastreams: string;</code><br/><code>            datastreamsNamingScheme: string;</code><br/><code>            upgradeElasticAgent: string;</code><br/><code>            upgradeElasticAgent712lower: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly ecs: {</code><br/><code>            readonly guide: string;</code><br/><code>        };</code><br/><code>    }</code> |  |
-|  [links](./kibana-plugin-core-public.doclinksstart.links.md) | <code>{</code><br/><code>        readonly settings: string;</code><br/><code>        readonly apm: {</code><br/><code>            readonly kibanaSettings: string;</code><br/><code>            readonly supportedServiceMaps: string;</code><br/><code>            readonly upgrading: string;</code><br/><code>        };</code><br/><code>        readonly canvas: {</code><br/><code>            readonly guide: string;</code><br/><code>        };</code><br/><code>        readonly dashboard: {</code><br/><code>            readonly guide: string;</code><br/><code>            readonly drilldowns: string;</code><br/><code>            readonly drilldownsTriggerPicker: string;</code><br/><code>            readonly urlDrilldownTemplateSyntax: string;</code><br/><code>            readonly urlDrilldownVariables: string;</code><br/><code>        };</code><br/><code>        readonly discover: Record&lt;string, string&gt;;</code><br/><code>        readonly filebeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly installation: string;</code><br/><code>            readonly configuration: string;</code><br/><code>            readonly elasticsearchOutput: string;</code><br/><code>            readonly elasticsearchModule: string;</code><br/><code>            readonly startup: string;</code><br/><code>            readonly exportedFields: string;</code><br/><code>            readonly suricataModule: string;</code><br/><code>            readonly zeekModule: string;</code><br/><code>        };</code><br/><code>        readonly auditbeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly auditdModule: string;</code><br/><code>            readonly systemModule: string;</code><br/><code>        };</code><br/><code>        readonly metricbeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly configure: string;</code><br/><code>            readonly httpEndpoint: string;</code><br/><code>            readonly install: string;</code><br/><code>            readonly start: string;</code><br/><code>        };</code><br/><code>        readonly enterpriseSearch: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly appSearchBase: string;</code><br/><code>            readonly workplaceSearchBase: string;</code><br/><code>        };</code><br/><code>        readonly heartbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly libbeat: {</code><br/><code>            readonly getStarted: string;</code><br/><code>        };</code><br/><code>        readonly logstash: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly functionbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly winlogbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly aggs: {</code><br/><code>            readonly composite: string;</code><br/><code>            readonly composite_missing_bucket: string;</code><br/><code>            readonly date_histogram: string;</code><br/><code>            readonly date_range: string;</code><br/><code>            readonly date_format_pattern: string;</code><br/><code>            readonly filter: string;</code><br/><code>            readonly filters: string;</code><br/><code>            readonly geohash_grid: string;</code><br/><code>            readonly histogram: string;</code><br/><code>            readonly ip_range: string;</code><br/><code>            readonly range: string;</code><br/><code>            readonly significant_terms: string;</code><br/><code>            readonly terms: string;</code><br/><code>            readonly avg: string;</code><br/><code>            readonly avg_bucket: string;</code><br/><code>            readonly max_bucket: string;</code><br/><code>            readonly min_bucket: string;</code><br/><code>            readonly sum_bucket: string;</code><br/><code>            readonly cardinality: string;</code><br/><code>            readonly count: string;</code><br/><code>            readonly cumulative_sum: string;</code><br/><code>            readonly derivative: string;</code><br/><code>            readonly geo_bounds: string;</code><br/><code>            readonly geo_centroid: string;</code><br/><code>            readonly max: string;</code><br/><code>            readonly median: string;</code><br/><code>            readonly min: string;</code><br/><code>            readonly moving_avg: string;</code><br/><code>            readonly percentile_ranks: string;</code><br/><code>            readonly serial_diff: string;</code><br/><code>            readonly std_dev: string;</code><br/><code>            readonly sum: string;</code><br/><code>            readonly top_hits: string;</code><br/><code>        };</code><br/><code>        readonly runtimeFields: {</code><br/><code>            readonly overview: string;</code><br/><code>            readonly mapping: string;</code><br/><code>        };</code><br/><code>        readonly scriptedFields: {</code><br/><code>            readonly scriptFields: string;</code><br/><code>            readonly scriptAggs: string;</code><br/><code>            readonly painless: string;</code><br/><code>            readonly painlessApi: string;</code><br/><code>            readonly painlessLangSpec: string;</code><br/><code>            readonly painlessSyntax: string;</code><br/><code>            readonly painlessWalkthrough: string;</code><br/><code>            readonly luceneExpressions: string;</code><br/><code>        };</code><br/><code>        readonly search: {</code><br/><code>            readonly sessions: string;</code><br/><code>            readonly sessionLimits: string;</code><br/><code>        };</code><br/><code>        readonly indexPatterns: {</code><br/><code>            readonly introduction: string;</code><br/><code>            readonly fieldFormattersNumber: string;</code><br/><code>            readonly fieldFormattersString: string;</code><br/><code>            readonly runtimeFields: string;</code><br/><code>        };</code><br/><code>        readonly addData: string;</code><br/><code>        readonly kibana: string;</code><br/><code>        readonly upgradeAssistant: string;</code><br/><code>        readonly rollupJobs: string;</code><br/><code>        readonly elasticsearch: Record&lt;string, string&gt;;</code><br/><code>        readonly siem: {</code><br/><code>            readonly privileges: string;</code><br/><code>            readonly guide: string;</code><br/><code>            readonly gettingStarted: string;</code><br/><code>            readonly ml: string;</code><br/><code>            readonly ruleChangeLog: string;</code><br/><code>            readonly detectionsReq: string;</code><br/><code>            readonly networkMap: string;</code><br/><code>        };</code><br/><code>        readonly query: {</code><br/><code>            readonly eql: string;</code><br/><code>            readonly kueryQuerySyntax: string;</code><br/><code>            readonly luceneQuerySyntax: string;</code><br/><code>            readonly percolate: string;</code><br/><code>            readonly queryDsl: string;</code><br/><code>            readonly autocompleteChanges: string;</code><br/><code>        };</code><br/><code>        readonly date: {</code><br/><code>            readonly dateMath: string;</code><br/><code>            readonly dateMathIndexNames: string;</code><br/><code>        };</code><br/><code>        readonly management: Record&lt;string, string&gt;;</code><br/><code>        readonly ml: Record&lt;string, string&gt;;</code><br/><code>        readonly transforms: Record&lt;string, string&gt;;</code><br/><code>        readonly visualize: Record&lt;string, string&gt;;</code><br/><code>        readonly apis: Readonly&lt;{</code><br/><code>            bulkIndexAlias: string;</code><br/><code>            byteSizeUnits: string;</code><br/><code>            createAutoFollowPattern: string;</code><br/><code>            createFollower: string;</code><br/><code>            createIndex: string;</code><br/><code>            createSnapshotLifecyclePolicy: string;</code><br/><code>            createRoleMapping: string;</code><br/><code>            createRoleMappingTemplates: string;</code><br/><code>            createRollupJobsRequest: string;</code><br/><code>            createApiKey: string;</code><br/><code>            createPipeline: string;</code><br/><code>            createTransformRequest: string;</code><br/><code>            cronExpressions: string;</code><br/><code>            executeWatchActionModes: string;</code><br/><code>            indexExists: string;</code><br/><code>            openIndex: string;</code><br/><code>            putComponentTemplate: string;</code><br/><code>            painlessExecute: string;</code><br/><code>            painlessExecuteAPIContexts: string;</code><br/><code>            putComponentTemplateMetadata: string;</code><br/><code>            putSnapshotLifecyclePolicy: string;</code><br/><code>            putIndexTemplateV1: string;</code><br/><code>            putWatch: string;</code><br/><code>            simulatePipeline: string;</code><br/><code>            timeUnits: string;</code><br/><code>            updateTransform: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly observability: Record&lt;string, string&gt;;</code><br/><code>        readonly alerting: Record&lt;string, string&gt;;</code><br/><code>        readonly maps: Record&lt;string, string&gt;;</code><br/><code>        readonly monitoring: Record&lt;string, string&gt;;</code><br/><code>        readonly security: Readonly&lt;{</code><br/><code>            apiKeyServiceSettings: string;</code><br/><code>            clusterPrivileges: string;</code><br/><code>            elasticsearchSettings: string;</code><br/><code>            elasticsearchEnableSecurity: string;</code><br/><code>            indicesPrivileges: string;</code><br/><code>            kibanaTLS: string;</code><br/><code>            kibanaPrivileges: string;</code><br/><code>            mappingRoles: string;</code><br/><code>            mappingRolesFieldRules: string;</code><br/><code>            runAsPrivilege: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly watcher: Record&lt;string, string&gt;;</code><br/><code>        readonly ccs: Record&lt;string, string&gt;;</code><br/><code>        readonly plugins: Record&lt;string, string&gt;;</code><br/><code>        readonly snapshotRestore: Record&lt;string, string&gt;;</code><br/><code>        readonly ingest: Record&lt;string, string&gt;;</code><br/><code>        readonly fleet: Readonly&lt;{</code><br/><code>            guide: string;</code><br/><code>            fleetServer: string;</code><br/><code>            fleetServerAddFleetServer: string;</code><br/><code>            settings: string;</code><br/><code>            settingsFleetServerHostSettings: string;</code><br/><code>            troubleshooting: string;</code><br/><code>            elasticAgent: string;</code><br/><code>            datastreams: string;</code><br/><code>            datastreamsNamingScheme: string;</code><br/><code>            upgradeElasticAgent: string;</code><br/><code>            upgradeElasticAgent712lower: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly ecs: {</code><br/><code>            readonly guide: string;</code><br/><code>        };</code><br/><code>    }</code> |  |
-|  [links](./kibana-plugin-core-public.doclinksstart.links.md) | <code>{</code><br/><code>        readonly settings: string;</code><br/><code>        readonly apm: {</code><br/><code>            readonly kibanaSettings: string;</code><br/><code>            readonly supportedServiceMaps: string;</code><br/><code>            readonly metaData: string;</code><br/><code>        };</code><br/><code>        readonly canvas: {</code><br/><code>            readonly guide: string;</code><br/><code>        };</code><br/><code>        readonly dashboard: {</code><br/><code>            readonly guide: string;</code><br/><code>            readonly drilldowns: string;</code><br/><code>            readonly drilldownsTriggerPicker: string;</code><br/><code>            readonly urlDrilldownTemplateSyntax: string;</code><br/><code>            readonly urlDrilldownVariables: string;</code><br/><code>        };</code><br/><code>        readonly discover: Record&lt;string, string&gt;;</code><br/><code>        readonly filebeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly installation: string;</code><br/><code>            readonly configuration: string;</code><br/><code>            readonly elasticsearchOutput: string;</code><br/><code>            readonly elasticsearchModule: string;</code><br/><code>            readonly startup: string;</code><br/><code>            readonly exportedFields: string;</code><br/><code>            readonly suricataModule: string;</code><br/><code>            readonly zeekModule: string;</code><br/><code>        };</code><br/><code>        readonly auditbeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly auditdModule: string;</code><br/><code>            readonly systemModule: string;</code><br/><code>        };</code><br/><code>        readonly metricbeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly configure: string;</code><br/><code>            readonly httpEndpoint: string;</code><br/><code>            readonly install: string;</code><br/><code>            readonly start: string;</code><br/><code>        };</code><br/><code>        readonly enterpriseSearch: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly appSearchBase: string;</code><br/><code>            readonly workplaceSearchBase: string;</code><br/><code>        };</code><br/><code>        readonly heartbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly libbeat: {</code><br/><code>            readonly getStarted: string;</code><br/><code>        };</code><br/><code>        readonly logstash: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly functionbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly winlogbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly aggs: {</code><br/><code>            readonly composite: string;</code><br/><code>            readonly composite_missing_bucket: string;</code><br/><code>            readonly date_histogram: string;</code><br/><code>            readonly date_range: string;</code><br/><code>            readonly date_format_pattern: string;</code><br/><code>            readonly filter: string;</code><br/><code>            readonly filters: string;</code><br/><code>            readonly geohash_grid: string;</code><br/><code>            readonly histogram: string;</code><br/><code>            readonly ip_range: string;</code><br/><code>            readonly range: string;</code><br/><code>            readonly significant_terms: string;</code><br/><code>            readonly terms: string;</code><br/><code>            readonly avg: string;</code><br/><code>            readonly avg_bucket: string;</code><br/><code>            readonly max_bucket: string;</code><br/><code>            readonly min_bucket: string;</code><br/><code>            readonly sum_bucket: string;</code><br/><code>            readonly cardinality: string;</code><br/><code>            readonly count: string;</code><br/><code>            readonly cumulative_sum: string;</code><br/><code>            readonly derivative: string;</code><br/><code>            readonly geo_bounds: string;</code><br/><code>            readonly geo_centroid: string;</code><br/><code>            readonly max: string;</code><br/><code>            readonly median: string;</code><br/><code>            readonly min: string;</code><br/><code>            readonly moving_avg: string;</code><br/><code>            readonly percentile_ranks: string;</code><br/><code>            readonly serial_diff: string;</code><br/><code>            readonly std_dev: string;</code><br/><code>            readonly sum: string;</code><br/><code>            readonly top_hits: string;</code><br/><code>        };</code><br/><code>        readonly runtimeFields: {</code><br/><code>            readonly overview: string;</code><br/><code>            readonly mapping: string;</code><br/><code>        };</code><br/><code>        readonly scriptedFields: {</code><br/><code>            readonly scriptFields: string;</code><br/><code>            readonly scriptAggs: string;</code><br/><code>            readonly painless: string;</code><br/><code>            readonly painlessApi: string;</code><br/><code>            readonly painlessLangSpec: string;</code><br/><code>            readonly painlessSyntax: string;</code><br/><code>            readonly painlessWalkthrough: string;</code><br/><code>            readonly luceneExpressions: string;</code><br/><code>        };</code><br/><code>        readonly search: {</code><br/><code>            readonly sessions: string;</code><br/><code>            readonly sessionLimits: string;</code><br/><code>        };</code><br/><code>        readonly indexPatterns: {</code><br/><code>            readonly introduction: string;</code><br/><code>            readonly fieldFormattersNumber: string;</code><br/><code>            readonly fieldFormattersString: string;</code><br/><code>            readonly runtimeFields: string;</code><br/><code>        };</code><br/><code>        readonly addData: string;</code><br/><code>        readonly kibana: string;</code><br/><code>        readonly upgradeAssistant: string;</code><br/><code>        readonly rollupJobs: string;</code><br/><code>        readonly elasticsearch: Record&lt;string, string&gt;;</code><br/><code>        readonly siem: {</code><br/><code>            readonly privileges: string;</code><br/><code>            readonly guide: string;</code><br/><code>            readonly gettingStarted: string;</code><br/><code>            readonly ml: string;</code><br/><code>            readonly ruleChangeLog: string;</code><br/><code>            readonly detectionsReq: string;</code><br/><code>            readonly networkMap: string;</code><br/><code>        };</code><br/><code>        readonly query: {</code><br/><code>            readonly eql: string;</code><br/><code>            readonly kueryQuerySyntax: string;</code><br/><code>            readonly luceneQuerySyntax: string;</code><br/><code>            readonly percolate: string;</code><br/><code>            readonly queryDsl: string;</code><br/><code>            readonly autocompleteChanges: string;</code><br/><code>        };</code><br/><code>        readonly date: {</code><br/><code>            readonly dateMath: string;</code><br/><code>            readonly dateMathIndexNames: string;</code><br/><code>        };</code><br/><code>        readonly management: Record&lt;string, string&gt;;</code><br/><code>        readonly ml: Record&lt;string, string&gt;;</code><br/><code>        readonly transforms: Record&lt;string, string&gt;;</code><br/><code>        readonly visualize: Record&lt;string, string&gt;;</code><br/><code>        readonly apis: Readonly&lt;{</code><br/><code>            bulkIndexAlias: string;</code><br/><code>            byteSizeUnits: string;</code><br/><code>            createAutoFollowPattern: string;</code><br/><code>            createFollower: string;</code><br/><code>            createIndex: string;</code><br/><code>            createSnapshotLifecyclePolicy: string;</code><br/><code>            createRoleMapping: string;</code><br/><code>            createRoleMappingTemplates: string;</code><br/><code>            createRollupJobsRequest: string;</code><br/><code>            createApiKey: string;</code><br/><code>            createPipeline: string;</code><br/><code>            createTransformRequest: string;</code><br/><code>            cronExpressions: string;</code><br/><code>            executeWatchActionModes: string;</code><br/><code>            indexExists: string;</code><br/><code>            openIndex: string;</code><br/><code>            putComponentTemplate: string;</code><br/><code>            painlessExecute: string;</code><br/><code>            painlessExecuteAPIContexts: string;</code><br/><code>            putComponentTemplateMetadata: string;</code><br/><code>            putSnapshotLifecyclePolicy: string;</code><br/><code>            putIndexTemplateV1: string;</code><br/><code>            putWatch: string;</code><br/><code>            simulatePipeline: string;</code><br/><code>            timeUnits: string;</code><br/><code>            updateTransform: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly observability: Record&lt;string, string&gt;;</code><br/><code>        readonly alerting: Record&lt;string, string&gt;;</code><br/><code>        readonly maps: Record&lt;string, string&gt;;</code><br/><code>        readonly monitoring: Record&lt;string, string&gt;;</code><br/><code>        readonly security: Readonly&lt;{</code><br/><code>            apiKeyServiceSettings: string;</code><br/><code>            clusterPrivileges: string;</code><br/><code>            elasticsearchSettings: string;</code><br/><code>            elasticsearchEnableSecurity: string;</code><br/><code>            indicesPrivileges: string;</code><br/><code>            kibanaTLS: string;</code><br/><code>            kibanaPrivileges: string;</code><br/><code>            mappingRoles: string;</code><br/><code>            mappingRolesFieldRules: string;</code><br/><code>            runAsPrivilege: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly watcher: Record&lt;string, string&gt;;</code><br/><code>        readonly ccs: Record&lt;string, string&gt;;</code><br/><code>        readonly plugins: Record&lt;string, string&gt;;</code><br/><code>        readonly snapshotRestore: Record&lt;string, string&gt;;</code><br/><code>        readonly ingest: Record&lt;string, string&gt;;</code><br/><code>        readonly fleet: Readonly&lt;{</code><br/><code>            guide: string;</code><br/><code>            fleetServer: string;</code><br/><code>            fleetServerAddFleetServer: string;</code><br/><code>            settings: string;</code><br/><code>            settingsFleetServerHostSettings: string;</code><br/><code>            troubleshooting: string;</code><br/><code>            elasticAgent: string;</code><br/><code>            datastreams: string;</code><br/><code>            datastreamsNamingScheme: string;</code><br/><code>            upgradeElasticAgent: string;</code><br/><code>            upgradeElasticAgent712lower: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly ecs: {</code><br/><code>            readonly guide: string;</code><br/><code>        };</code><br/><code>    }</code> |  |
+|  [links](./kibana-plugin-core-public.doclinksstart.links.md) | <code>{</code><br/><code>        readonly settings: string;</code><br/><code>        readonly apm: {</code><br/><code>            readonly kibanaSettings: string;</code><br/><code>            readonly supportedServiceMaps: string;</code><br/><code>            readonly customLinks: string;</code><br/><code>            readonly droppedTransactionSpans: string;</code><br/><code>            readonly upgrading: string;</code><br/><code>            readonly metaData: string;</code><br/><code>        };</code><br/><code>        readonly canvas: {</code><br/><code>            readonly guide: string;</code><br/><code>        };</code><br/><code>        readonly dashboard: {</code><br/><code>            readonly guide: string;</code><br/><code>            readonly drilldowns: string;</code><br/><code>            readonly drilldownsTriggerPicker: string;</code><br/><code>            readonly urlDrilldownTemplateSyntax: string;</code><br/><code>            readonly urlDrilldownVariables: string;</code><br/><code>        };</code><br/><code>        readonly discover: Record&lt;string, string&gt;;</code><br/><code>        readonly filebeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly installation: string;</code><br/><code>            readonly configuration: string;</code><br/><code>            readonly elasticsearchOutput: string;</code><br/><code>            readonly elasticsearchModule: string;</code><br/><code>            readonly startup: string;</code><br/><code>            readonly exportedFields: string;</code><br/><code>            readonly suricataModule: string;</code><br/><code>            readonly zeekModule: string;</code><br/><code>        };</code><br/><code>        readonly auditbeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly auditdModule: string;</code><br/><code>            readonly systemModule: string;</code><br/><code>        };</code><br/><code>        readonly metricbeat: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly configure: string;</code><br/><code>            readonly httpEndpoint: string;</code><br/><code>            readonly install: string;</code><br/><code>            readonly start: string;</code><br/><code>        };</code><br/><code>        readonly enterpriseSearch: {</code><br/><code>            readonly base: string;</code><br/><code>            readonly appSearchBase: string;</code><br/><code>            readonly workplaceSearchBase: string;</code><br/><code>        };</code><br/><code>        readonly heartbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly libbeat: {</code><br/><code>            readonly getStarted: string;</code><br/><code>        };</code><br/><code>        readonly logstash: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly functionbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly winlogbeat: {</code><br/><code>            readonly base: string;</code><br/><code>        };</code><br/><code>        readonly aggs: {</code><br/><code>            readonly composite: string;</code><br/><code>            readonly composite_missing_bucket: string;</code><br/><code>            readonly date_histogram: string;</code><br/><code>            readonly date_range: string;</code><br/><code>            readonly date_format_pattern: string;</code><br/><code>            readonly filter: string;</code><br/><code>            readonly filters: string;</code><br/><code>            readonly geohash_grid: string;</code><br/><code>            readonly histogram: string;</code><br/><code>            readonly ip_range: string;</code><br/><code>            readonly range: string;</code><br/><code>            readonly significant_terms: string;</code><br/><code>            readonly terms: string;</code><br/><code>            readonly avg: string;</code><br/><code>            readonly avg_bucket: string;</code><br/><code>            readonly max_bucket: string;</code><br/><code>            readonly min_bucket: string;</code><br/><code>            readonly sum_bucket: string;</code><br/><code>            readonly cardinality: string;</code><br/><code>            readonly count: string;</code><br/><code>            readonly cumulative_sum: string;</code><br/><code>            readonly derivative: string;</code><br/><code>            readonly geo_bounds: string;</code><br/><code>            readonly geo_centroid: string;</code><br/><code>            readonly max: string;</code><br/><code>            readonly median: string;</code><br/><code>            readonly min: string;</code><br/><code>            readonly moving_avg: string;</code><br/><code>            readonly percentile_ranks: string;</code><br/><code>            readonly serial_diff: string;</code><br/><code>            readonly std_dev: string;</code><br/><code>            readonly sum: string;</code><br/><code>            readonly top_hits: string;</code><br/><code>        };</code><br/><code>        readonly runtimeFields: {</code><br/><code>            readonly overview: string;</code><br/><code>            readonly mapping: string;</code><br/><code>        };</code><br/><code>        readonly scriptedFields: {</code><br/><code>            readonly scriptFields: string;</code><br/><code>            readonly scriptAggs: string;</code><br/><code>            readonly painless: string;</code><br/><code>            readonly painlessApi: string;</code><br/><code>            readonly painlessLangSpec: string;</code><br/><code>            readonly painlessSyntax: string;</code><br/><code>            readonly painlessWalkthrough: string;</code><br/><code>            readonly luceneExpressions: string;</code><br/><code>        };</code><br/><code>        readonly search: {</code><br/><code>            readonly sessions: string;</code><br/><code>            readonly sessionLimits: string;</code><br/><code>        };</code><br/><code>        readonly indexPatterns: {</code><br/><code>            readonly introduction: string;</code><br/><code>            readonly fieldFormattersNumber: string;</code><br/><code>            readonly fieldFormattersString: string;</code><br/><code>            readonly runtimeFields: string;</code><br/><code>        };</code><br/><code>        readonly addData: string;</code><br/><code>        readonly kibana: string;</code><br/><code>        readonly upgradeAssistant: string;</code><br/><code>        readonly rollupJobs: string;</code><br/><code>        readonly elasticsearch: Record&lt;string, string&gt;;</code><br/><code>        readonly siem: {</code><br/><code>            readonly privileges: string;</code><br/><code>            readonly guide: string;</code><br/><code>            readonly gettingStarted: string;</code><br/><code>            readonly ml: string;</code><br/><code>            readonly ruleChangeLog: string;</code><br/><code>            readonly detectionsReq: string;</code><br/><code>            readonly networkMap: string;</code><br/><code>        };</code><br/><code>        readonly query: {</code><br/><code>            readonly eql: string;</code><br/><code>            readonly kueryQuerySyntax: string;</code><br/><code>            readonly luceneQuerySyntax: string;</code><br/><code>            readonly percolate: string;</code><br/><code>            readonly queryDsl: string;</code><br/><code>            readonly autocompleteChanges: string;</code><br/><code>        };</code><br/><code>        readonly date: {</code><br/><code>            readonly dateMath: string;</code><br/><code>            readonly dateMathIndexNames: string;</code><br/><code>        };</code><br/><code>        readonly management: Record&lt;string, string&gt;;</code><br/><code>        readonly ml: Record&lt;string, string&gt;;</code><br/><code>        readonly transforms: Record&lt;string, string&gt;;</code><br/><code>        readonly visualize: Record&lt;string, string&gt;;</code><br/><code>        readonly apis: Readonly&lt;{</code><br/><code>            bulkIndexAlias: string;</code><br/><code>            byteSizeUnits: string;</code><br/><code>            createAutoFollowPattern: string;</code><br/><code>            createFollower: string;</code><br/><code>            createIndex: string;</code><br/><code>            createSnapshotLifecyclePolicy: string;</code><br/><code>            createRoleMapping: string;</code><br/><code>            createRoleMappingTemplates: string;</code><br/><code>            createRollupJobsRequest: string;</code><br/><code>            createApiKey: string;</code><br/><code>            createPipeline: string;</code><br/><code>            createTransformRequest: string;</code><br/><code>            cronExpressions: string;</code><br/><code>            executeWatchActionModes: string;</code><br/><code>            indexExists: string;</code><br/><code>            openIndex: string;</code><br/><code>            putComponentTemplate: string;</code><br/><code>            painlessExecute: string;</code><br/><code>            painlessExecuteAPIContexts: string;</code><br/><code>            putComponentTemplateMetadata: string;</code><br/><code>            putSnapshotLifecyclePolicy: string;</code><br/><code>            putIndexTemplateV1: string;</code><br/><code>            putWatch: string;</code><br/><code>            simulatePipeline: string;</code><br/><code>            timeUnits: string;</code><br/><code>            updateTransform: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly observability: Record&lt;string, string&gt;;</code><br/><code>        readonly alerting: Record&lt;string, string&gt;;</code><br/><code>        readonly maps: Record&lt;string, string&gt;;</code><br/><code>        readonly monitoring: Record&lt;string, string&gt;;</code><br/><code>        readonly security: Readonly&lt;{</code><br/><code>            apiKeyServiceSettings: string;</code><br/><code>            clusterPrivileges: string;</code><br/><code>            elasticsearchSettings: string;</code><br/><code>            elasticsearchEnableSecurity: string;</code><br/><code>            indicesPrivileges: string;</code><br/><code>            kibanaTLS: string;</code><br/><code>            kibanaPrivileges: string;</code><br/><code>            mappingRoles: string;</code><br/><code>            mappingRolesFieldRules: string;</code><br/><code>            runAsPrivilege: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly watcher: Record&lt;string, string&gt;;</code><br/><code>        readonly ccs: Record&lt;string, string&gt;;</code><br/><code>        readonly plugins: Record&lt;string, string&gt;;</code><br/><code>        readonly snapshotRestore: Record&lt;string, string&gt;;</code><br/><code>        readonly ingest: Record&lt;string, string&gt;;</code><br/><code>        readonly fleet: Readonly&lt;{</code><br/><code>            guide: string;</code><br/><code>            fleetServer: string;</code><br/><code>            fleetServerAddFleetServer: string;</code><br/><code>            settings: string;</code><br/><code>            settingsFleetServerHostSettings: string;</code><br/><code>            troubleshooting: string;</code><br/><code>            elasticAgent: string;</code><br/><code>            datastreams: string;</code><br/><code>            datastreamsNamingScheme: string;</code><br/><code>            upgradeElasticAgent: string;</code><br/><code>            upgradeElasticAgent712lower: string;</code><br/><code>        }&gt;;</code><br/><code>        readonly ecs: {</code><br/><code>            readonly guide: string;</code><br/><code>        };</code><br/><code>    }</code> |  |
 
diff --git a/src/core/public/chrome/chrome_service.mock.ts b/src/core/public/chrome/chrome_service.mock.ts
index 5e29218250fb..893b68ed429b 100644
--- a/src/core/public/chrome/chrome_service.mock.ts
+++ b/src/core/public/chrome/chrome_service.mock.ts
@@ -55,6 +55,7 @@ const createStartContractMock = () => {
     getCustomNavLink$: jest.fn(),
     setCustomNavLink: jest.fn(),
     setHeaderBanner: jest.fn(),
+    hasHeaderBanner$: jest.fn(),
     getBodyClasses$: jest.fn(),
   };
   startContract.navLinks.getAll.mockReturnValue([]);
@@ -66,6 +67,7 @@ const createStartContractMock = () => {
   startContract.getHelpExtension$.mockReturnValue(new BehaviorSubject(undefined));
   startContract.getIsNavDrawerLocked$.mockReturnValue(new BehaviorSubject(false));
   startContract.getBodyClasses$.mockReturnValue(new BehaviorSubject([]));
+  startContract.hasHeaderBanner$.mockReturnValue(new BehaviorSubject(false));
   return startContract;
 };
 
diff --git a/src/core/public/chrome/chrome_service.test.ts b/src/core/public/chrome/chrome_service.test.ts
index 8df8d76a13c4..b3815c02674e 100644
--- a/src/core/public/chrome/chrome_service.test.ts
+++ b/src/core/public/chrome/chrome_service.test.ts
@@ -390,6 +390,19 @@ describe('start', () => {
     });
   });
 
+  describe('header banner', () => {
+    it('updates/emits the state of the header banner', async () => {
+      const { chrome, service } = await start();
+      const promise = chrome.hasHeaderBanner$().pipe(toArray()).toPromise();
+
+      chrome.setHeaderBanner({ content: () => () => undefined });
+      chrome.setHeaderBanner(undefined);
+      service.stop();
+
+      await expect(promise).resolves.toEqual([false, true, false]);
+    });
+  });
+
   describe('erase chrome fields', () => {
     it('while switching an app', async () => {
       const startDeps = defaultStartDeps([new FakeApp('alpha')]);
diff --git a/src/core/public/chrome/chrome_service.tsx b/src/core/public/chrome/chrome_service.tsx
index 5740e1739280..8c8b264b094c 100644
--- a/src/core/public/chrome/chrome_service.tsx
+++ b/src/core/public/chrome/chrome_service.tsx
@@ -273,6 +273,13 @@ export class ChromeService {
         headerBanner$.next(headerBanner);
       },
 
+      hasHeaderBanner$: () => {
+        return headerBanner$.pipe(
+          takeUntil(this.stop$),
+          map((banner) => Boolean(banner))
+        );
+      },
+
       getBodyClasses$: () => bodyClasses$.pipe(takeUntil(this.stop$)),
     };
   }
diff --git a/src/core/public/chrome/types.ts b/src/core/public/chrome/types.ts
index 813f385fc94d..98987678d64c 100644
--- a/src/core/public/chrome/types.ts
+++ b/src/core/public/chrome/types.ts
@@ -168,6 +168,11 @@ export interface ChromeStart {
    * @remarks Using `undefined` when invoking this API will remove the banner.
    */
   setHeaderBanner(headerBanner?: ChromeUserBanner): void;
+
+  /**
+   * Get an observable of the current header banner presence state.
+   */
+  hasHeaderBanner$(): Observable<boolean>;
 }
 
 /** @internal */
diff --git a/src/core/public/public.api.md b/src/core/public/public.api.md
index 78032145a5c7..0038c193c510 100644
--- a/src/core/public/public.api.md
+++ b/src/core/public/public.api.md
@@ -356,6 +356,7 @@ export interface ChromeStart {
     getHelpExtension$(): Observable<ChromeHelpExtension | undefined>;
     getIsNavDrawerLocked$(): Observable<boolean>;
     getIsVisible$(): Observable<boolean>;
+    hasHeaderBanner$(): Observable<boolean>;
     navControls: ChromeNavControls;
     navLinks: ChromeNavLinks;
     recentlyAccessed: ChromeRecentlyAccessed;