[Curation] Add support for a custom drag handle to the Result component (#94652)

* Update Result component to render a custom drag handle

* Update Result library with a draggable example

- note: this doesn't actually handle reorder logic, it's purely a UI/UX example

* Update CurationResult to pass dragHandleProps through to Result

x-pack/plugins/enterprise_search/public/applications/app_search/components/curations/curation/results/curation_result.test.tsx

@@ -8,6 +8,7 @@
 import { setMockValues } from '../../../../../__mocks__';
 
 import React from 'react';
+import { DraggableProvidedDragHandleProps } from 'react-beautiful-dnd';
 
 import { shallow, ShallowWrapper } from 'enzyme';
 
@@ -29,12 +30,15 @@ describe('CurationResult', () => {
     { title: 'add', iconType: 'plus', onClick: () => {} },
     { title: 'remove', iconType: 'minus', onClick: () => {} },
   ];
+  const mockDragging = {} as DraggableProvidedDragHandleProps; // Passed from EuiDraggable
 
   let wrapper: ShallowWrapper;
 
   beforeAll(() => {
     setMockValues(values);
-    wrapper = shallow(<CurationResult result={mockResult} actions={mockActions} />);
+    wrapper = shallow(
+      <CurationResult result={mockResult} actions={mockActions} dragHandleProps={mockDragging} />
+    );
   });
 
   it('passes EngineLogic state', () => {
@@ -42,8 +46,9 @@ describe('CurationResult', () => {
     expect(wrapper.find(Result).prop('schemaForTypeHighlights')).toEqual('some mock schema');
   });
 
-  it('passes result and actions props', () => {
+  it('passes result, actions, and dragHandleProps props', () => {
     expect(wrapper.find(Result).prop('result')).toEqual(mockResult);
     expect(wrapper.find(Result).prop('actions')).toEqual(mockActions);
+    expect(wrapper.find(Result).prop('dragHandleProps')).toEqual(mockDragging);
   });
 });

x-pack/plugins/enterprise_search/public/applications/app_search/components/curations/curation/results/curation_result.tsx

@@ -6,6 +6,7 @@
  */
 
 import React from 'react';
+import { DraggableProvidedDragHandleProps } from 'react-beautiful-dnd';
 
 import { useValues } from 'kea';
 
@@ -18,9 +19,10 @@ import { Result as ResultType, ResultAction } from '../../../result/types';
 interface Props {
   result: ResultType;
   actions: ResultAction[];
+  dragHandleProps?: DraggableProvidedDragHandleProps;
 }
 
-export const CurationResult: React.FC<Props> = ({ result, actions }) => {
+export const CurationResult: React.FC<Props> = ({ result, actions, dragHandleProps }) => {
   const {
     isMetaEngine,
     engine: { schema },
@@ -33,6 +35,7 @@ export const CurationResult: React.FC<Props> = ({ result, actions }) => {
         actions={actions}
         isMetaEngine={isMetaEngine}
         schemaForTypeHighlights={schema}
+        dragHandleProps={dragHandleProps}
       />
       <EuiSpacer size="m" />
     </>

x-pack/plugins/enterprise_search/public/applications/app_search/components/library/library.tsx

@@ -14,6 +14,9 @@ import {
   EuiTitle,
   EuiPageContentBody,
   EuiPageContent,
+  EuiDragDropContext,
+  EuiDroppable,
+  EuiDraggable,
 } from '@elastic/eui';
 
 import { SetAppSearchChrome as SetPageChrome } from '../../../shared/kibana_chrome';
@@ -228,6 +231,28 @@ export const Library: React.FC = () => {
           <Result {...props} actions={actions} shouldLinkToDetailPage />
           <EuiSpacer />
 
+          <EuiSpacer />
+          <EuiTitle size="s">
+            <h3>With a drag handle</h3>
+          </EuiTitle>
+          <EuiSpacer />
+          <EuiDragDropContext onDragEnd={() => {}}>
+            <EuiDroppable spacing="m" droppableId="DraggableResultsTest">
+              {[1, 2, 3].map((_, i) => (
+                <EuiDraggable
+                  spacing="m"
+                  key={`draggable-${i}`}
+                  index={i}
+                  draggableId={`draggable-${i}`}
+                  customDragHandle
+                >
+                  {(provided) => <Result {...props} dragHandleProps={provided.dragHandleProps} />}
+                </EuiDraggable>
+              ))}
+            </EuiDroppable>
+          </EuiDragDropContext>
+          <EuiSpacer />
+
           <EuiSpacer />
           <EuiTitle size="s">
             <h3>With field value type highlights</h3>

x-pack/plugins/enterprise_search/public/applications/app_search/components/result/result.scss

@@ -1,10 +1,10 @@
 .appSearchResult {
   display: grid;
-  grid-template-columns: 1fr auto;
-  grid-template-rows: 1fr auto;
+  grid-template-columns: auto 1fr auto;
+  grid-template-rows: auto 1fr auto;
   grid-template-areas:
-    'content actions'
-    'toggle actions';
+    'drag content actions'
+    'drag toggle actions';
   overflow: hidden; // Prevents child background-colors from clipping outside of panel border-radius
 
   &__content {
@@ -52,6 +52,15 @@
       background-color: $euiPageBackgroundColor;
     }
   }
+
+  &__dragHandle {
+    grid-area: drag;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    width: $euiSizeXL;
+    border-right: $euiBorderThin;
+  }
 }
 
 /**

x-pack/plugins/enterprise_search/public/applications/app_search/components/result/result.test.tsx

@@ -6,6 +6,7 @@
  */
 
 import React from 'react';
+import { DraggableProvidedDragHandleProps } from 'react-beautiful-dnd';
 
 import { shallow, ShallowWrapper } from 'enzyme';
 
@@ -129,6 +130,20 @@ describe('Result', () => {
     });
   });
 
+  describe('dragging', () => {
+    // In the real world, the drag library sets data attributes, role, tabIndex, etc.
+    const mockDragHandleProps = ({
+      someMockProp: true,
+    } as unknown) as DraggableProvidedDragHandleProps;
+
+    it('will render a drag handle with the passed props', () => {
+      const wrapper = shallow(<Result {...props} dragHandleProps={mockDragHandleProps} />);
+
+      expect(wrapper.find('.appSearchResult__dragHandle')).toHaveLength(1);
+      expect(wrapper.find('.appSearchResult__dragHandle').prop('someMockProp')).toEqual(true);
+    });
+  });
+
   it('will render field details with type highlights if schemaForTypeHighlights has been provided', () => {
     const wrapper = shallow(
       <Result {...props} shouldLinkToDetailPage schemaForTypeHighlights={schema} />

x-pack/plugins/enterprise_search/public/applications/app_search/components/result/result.tsx

@@ -6,6 +6,7 @@
  */
 
 import React, { useState, useMemo } from 'react';
+import { DraggableProvidedDragHandleProps } from 'react-beautiful-dnd';
 
 import classNames from 'classnames';
 
@@ -31,6 +32,7 @@ interface Props {
   shouldLinkToDetailPage?: boolean;
   schemaForTypeHighlights?: Schema;
   actions?: ResultAction[];
+  dragHandleProps?: DraggableProvidedDragHandleProps;
 }
 
 const RESULT_CUTOFF = 5;
@@ -42,6 +44,7 @@ export const Result: React.FC<Props> = ({
   shouldLinkToDetailPage = false,
   schemaForTypeHighlights,
   actions = [],
+  dragHandleProps,
 }) => {
   const [isOpen, setIsOpen] = useState(false);
 
@@ -87,6 +90,11 @@ export const Result: React.FC<Props> = ({
         values: { id: result[ID].raw },
       })}
     >
+      {dragHandleProps && (
+        <div {...dragHandleProps} className="appSearchResult__dragHandle">
+          <EuiIcon type="grab" />
+        </div>
+      )}
       {conditionallyLinkedArticle(
         <>
           <ResultHeader