Field Search in Data panel (opensearch-project#995)

Add ability to search on index fields
Signed-off-by: Abbas Hussain <[email protected]>

src/plugins/wizard/public/application/components/data_tab/field_search.tsx

@@ -0,0 +1,47 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import React from 'react';
+import { i18n } from '@osd/i18n';
+import { EuiFieldSearch, EuiFlexGroup, EuiFlexItem } from '@elastic/eui';
+import { setSearchField } from '../../utils/state_management/datasource_slice';
+import { useTypedDispatch } from '../../utils/state_management';
+
+export interface Props {
+  /**
+   * the input value of the user
+   */
+  value?: string;
+}
+
+/**
+ * Component is Wizard's side bar to  search of available fields
+ * Additionally there's a button displayed that allows the user to show/hide more filter fields
+ */
+export function FieldSearch({ value }: Props) {
+  const searchPlaceholder = i18n.translate('wizard.fieldChooser.searchPlaceHolder', {
+    defaultMessage: 'Search field names',
+  });
+
+  const dispatch = useTypedDispatch();
+
+  return (
+    <React.Fragment>
+      <EuiFlexGroup responsive={false} gutterSize={'s'}>
+        <EuiFlexItem>
+          <EuiFieldSearch
+            aria-label={searchPlaceholder}
+            data-test-subj="fieldFilterSearchInput"
+            compressed
+            fullWidth
+            onChange={(event) => dispatch(setSearchField(event.currentTarget.value))}
+            placeholder={searchPlaceholder}
+            value={value}
+          />
+        </EuiFlexItem>
+      </EuiFlexGroup>
+    </React.Fragment>
+  );
+}

src/plugins/wizard/public/application/components/data_tab/field_selector.tsx

@@ -3,16 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import React from 'react';
-
-import {
-  EuiFormLabel,
-  EuiFlexItem,
-  EuiAccordion,
-  EuiSpacer,
-  EuiNotificationBadge,
-  EuiTitle,
-} from '@elastic/eui';
+import React, { useCallback, useState, useEffect } from 'react';
+import { EuiFlexItem, EuiAccordion, EuiSpacer, EuiNotificationBadge, EuiTitle } from '@elastic/eui';
+import { FieldSearch } from './field_search';
 
 import {
   IndexPatternField,
@@ -39,7 +32,19 @@ const META_FIELDS: string[] = [
 
 export const FieldSelector = () => {
   const indexFields = useTypedSelector((state) => state.dataSource.visualizableFields);
-  const fields = indexFields?.reduce<IFieldCategories>(
+  const [filteredFields, setFilteredFields] = useState(indexFields);
+  const fieldSearchValue = useTypedSelector((state) => state.dataSource.searchField);
+
+  useEffect(() => {
+    const filteredSubset = indexFields.filter((field) =>
+      field.displayName.includes(fieldSearchValue)
+    );
+
+    setFilteredFields(filteredSubset);
+    return;
+  }, [indexFields, fieldSearchValue]);
+
+  const fields = filteredFields?.reduce<IFieldCategories>(
     (fieldGroups, currentField) => {
       const category = getFieldCategory(currentField);
       fieldGroups[category].push(currentField);
@@ -56,7 +61,9 @@ export const FieldSelector = () => {
   return (
     <div className="wizFieldSelector">
       <div>
-        <EuiFormLabel>TODO: Search goes here</EuiFormLabel>
+        <form>
+          <FieldSearch value={fieldSearchValue} />
+        </form>
       </div>
       <div className="wizFieldSelector__fieldGroups">
         <FieldGroup

src/plugins/wizard/public/application/utils/state_management/datasource_slice.ts

@@ -13,11 +13,13 @@ const ALLOWED_FIELDS: string[] = [OSD_FIELD_TYPES.STRING, OSD_FIELD_TYPES.NUMBER
 interface DataSourceState {
   indexPattern: IndexPattern | null;
   visualizableFields: IndexPatternField[];
+  searchField: string;
 }
 
 const initialState: DataSourceState = {
   indexPattern: null,
   visualizableFields: [],
+  searchField: '',
 };
 
 export const slice = createSlice({
@@ -28,14 +30,17 @@ export const slice = createSlice({
       state.indexPattern = action.payload;
       state.visualizableFields = action.payload.fields.filter(isVisualizable);
     },
+    setSearchField: (state, action: PayloadAction<string>) => {
+      state.searchField = action.payload;
+    },
   },
 });
 
 export const { reducer } = slice;
-export const { setIndexPattern } = slice.actions;
+export const { setIndexPattern, setSearchField } = slice.actions;
 
 // TODO: Temporary validate function
-// Need to identify hopw to get fieldCounts to use the standard filter and group functions
+// Need to identify how to get fieldCounts to use the standard filter and group functions
 function isVisualizable(field: IndexPatternField): boolean {
   const isAggregatable = field.aggregatable === true;
   const isNotScripted = !field.scripted;