[EuiTable] New responsiveBreakpoint prop + initial setup for mobile vs desktop styles

changelogs/upcoming/7625.md

@@ -0,0 +1,7 @@
+- Updated `EuiTable`, `EuiBasicTable`, and `EuiInMemoryTable` with a new `responsiveBreakpoint` prop, which allows customizing the point at which the table collapses into a mobile-friendly view with cards
+- Updated `EuiProvider`'s `componentDefaults` prop to allow configuring `EuiTable.responsiveBreakpoint`
+
+**Deprecations**
+
+- Deprecated the `responsive` prop from `EuiTable`, `EuiBasicTable`, and `EuiInMemoryTable`. Use the new `responsiveBreakpoint` prop instead
+- `EuiTable` mobile headers no longer render in the DOM when not visible (previously rendered with `display: none`). This may affect DOM testing assertions.

src-docs/src/views/provider/provider_component_defaults.tsx

@@ -12,6 +12,7 @@ export const EuiComponentDefaultsProps: FunctionComponent<
 // Exported in one place for DRYness
 export const euiProviderComponentDefaultsSnippet = `<EuiProvider
   componentDefaults={{
+    EuiTable: { responsiveBreakpoint: 's', },
     EuiTablePagination: { itemsPerPage: 20, },
     EuiFocusTrap: { crossFrame: true },
     EuiPortal: { insert },

src-docs/src/views/tables/mobile/mobile.tsx

@@ -302,7 +302,7 @@ export default () => {
         selection={selection}
         isSelectable={true}
         hasActions={true}
-        responsive={isResponsive}
+        responsiveBreakpoint={isResponsive}
         onChange={onTableChange}
       />
     </>

src-docs/src/views/tables/mobile/mobile_section.js

@@ -1,4 +1,5 @@
 import React from 'react';
+import { Link } from 'react-router-dom';
 import { GuideSectionTypes } from '../../../components';
 
 import Table from './mobile';
@@ -32,14 +33,26 @@ export const section = {
   text: (
     <>
       <p>
-        Allowing a table to be responsive means breaking each row down into its
-        own section and individually displaying each table header above the cell
-        contents. There are few times when you may want to exclude this behavior
-        from your table, for instance, when the table has very few columns or
-        the table does not break down easily into this format. For these use
-        cases, you may set <EuiCode language="js">responsive=false</EuiCode>.
+        Tables will be mobile-responsive by default, breaking down each row into
+        its own card section and individually displaying each table header above
+        the cell contents. The default breakpoint at which the table will
+        responsively shift into cards is the{' '}
+        <Link to="/theming/breakpoints/values">
+          <EuiCode>m</EuiCode> window size
+        </Link>
+        , which can be customized with the{' '}
+        <EuiCode>responsiveBreakpoint</EuiCode> prop (e.g.,{' '}
+        <EuiCode language="js">{'responsiveBreakpoint="s"'}</EuiCode>).
       </p>
       <p>
+        To never render your table responsively (e.g. for tables with very few
+        columns), you may set{' '}
+        <EuiCode language="js">{'responsiveBreakpoint={false}'}</EuiCode>.
+        Inversely, if you always want your table to render in a mobile-friendly
+        manner, pass <EuiCode>true</EuiCode>.
+      </p>
+      <p>
+        {/* TODO: This shouldn't be true by the end of the Emotion conversion */}
         To make your table work responsively, please make sure you add the
         following <EuiTextColor color="danger">additional</EuiTextColor> props
         to the top level table component (<strong>EuiBasicTable</strong> or{' '}