[ES|QL] Index editor cell validations (#224728)

## Summary
Related issue https://github.com/elastic/kibana/issues/207330

Adds simple type validations when editing/adding a new cell in the index
editor.

<img width="1271" alt="image"
src="https://github.com/user-attachments/assets/6ec9fae4-f0d6-4ab2-b32e-64dc1594c36a"
/>

src/platform/packages/private/kbn-index-editor/src/components/data_grid.tsx

@@ -113,8 +113,15 @@ const DataGrid: React.FC<ESQLDataGridProps> = (props) => {
   );
 
   const CellValueRenderer = useMemo(() => {
-    return getCellValueRenderer(rows, editingCell, savingDocs, setEditingCell, onValueChange);
-  }, [rows, editingCell, setEditingCell, onValueChange, savingDocs]);
+    return getCellValueRenderer(
+      rows,
+      props.columns,
+      editingCell,
+      savingDocs,
+      setEditingCell,
+      onValueChange
+    );
+  }, [rows, props.columns, editingCell, setEditingCell, onValueChange, savingDocs]);
 
   const externalCustomRenderers: CustomCellRenderer = useMemo(() => {
     return activeColumns.reduce((acc, columnId) => {

src/platform/packages/private/kbn-index-editor/src/components/row_column_creator.tsx

@@ -69,7 +69,7 @@ export const RowColumnCreator = ({ columns }: { columns: DatatableColumn[] }) =>
               onChange={updateRow(column.id)}
               autoFocus={index === 0}
               css={css`
-                min-width: ${230}px;
+                min-width: ${180}px;
               `}
             />
           </EuiFlexItem>

src/platform/packages/private/kbn-index-editor/src/components/value_input.tsx

@@ -7,13 +7,17 @@
  * License v3.0 only", or the "Server Side Public License, v 1".
  */
 
-import { EuiFieldText } from '@elastic/eui';
-import React, { useState } from 'react';
+import React, { useMemo, useState } from 'react';
 import { i18n } from '@kbn/i18n';
+import type { DatatableColumn } from '@kbn/expressions-plugin/common';
+import { useKibana } from '@kbn/kibana-react-plugin/public';
+import { getInputComponentForType } from './value_inputs_factory';
+import { KibanaContextExtra } from '../types';
 
 interface ValueInputProps {
   value?: string;
   columnName?: string;
+  columns?: DatatableColumn[];
   onBlur?: (event: React.FocusEvent<HTMLInputElement>) => void;
   onEnter?: (value: string) => void;
   onChange?: (value: string) => void;
@@ -24,33 +28,55 @@ interface ValueInputProps {
 export const ValueInput = ({
   value = '',
   columnName = '',
+  columns,
   onBlur,
   onEnter,
   onChange,
   autoFocus = false,
   className = '',
 }: ValueInputProps) => {
+  const {
+    services: { notifications },
+  } = useKibana<KibanaContextExtra>();
   const [editValue, setEditValue] = useState(value);
+  const [error, setError] = useState<string | null>(null);
+
+  const columnType = useMemo(() => {
+    if (!columns || !columnName) return;
+    const col = columns.find((c) => c.name === columnName);
+    return col?.meta?.type;
+  }, [columns, columnName]);
 
   const onKeyDown = (event: React.KeyboardEvent<HTMLInputElement>) => {
     if (event.key === 'Enter') {
-      // Perform Validations
+      if (error) {
+        notifications.toasts.addDanger({
+          title: error,
+        });
+        return;
+      }
+
       onEnter?.(editValue);
     }
   };
 
   const onBlurHandler = (event: React.FocusEvent<HTMLInputElement>) => {
-    if (onBlur) {
-      onBlur(event);
+    if (error) {
+      notifications.toasts.addDanger({
+        title: error,
+      });
+      return;
     }
-    // Perform Validations ?
+    onBlur?.(event);
   };
 
+  const InputComponent = useMemo(() => getInputComponentForType(columnType), [columnType]);
+
   return (
-    <EuiFieldText
+    <InputComponent
       autoFocus={autoFocus}
-      compressed
       placeholder={columnName}
+      label={columnName}
       value={editValue}
       aria-label={i18n.translate('indexEditor.cellValueInput.aria', {
         defaultMessage: 'Value for {columnName}',
@@ -60,6 +86,7 @@ export const ValueInput = ({
         setEditValue(e.target.value);
         onChange?.(e.target.value);
       }}
+      onError={setError}
       onBlur={onBlurHandler}
       onKeyDown={onKeyDown}
       className={className}

src/platform/packages/private/kbn-index-editor/src/components/value_input_control.tsx

@@ -12,6 +12,7 @@ import { EuiFlexGroup, EuiFlexItem, EuiLoadingSpinner } from '@elastic/eui';
 import { type DataGridCellValueElementProps } from '@kbn/unified-data-table';
 import type { DataTableRecord } from '@kbn/discover-utils';
 import { isNil } from 'lodash';
+import type { DatatableColumn } from '@kbn/expressions-plugin/common';
 import type { PendingSave } from '../index_update_service';
 import { ValueInput } from './value_input';
 
@@ -20,6 +21,7 @@ export type OnCellValueChange = (docId: string, update: any) => void;
 export const getCellValueRenderer =
   (
     rows: DataTableRecord[],
+    columns: DatatableColumn[],
     editingCell: { row: number | null; col: string | null },
     savingDocs: PendingSave | undefined,
     onEditStart: (update: { row: number | null; col: string | null }) => void,
@@ -40,9 +42,8 @@ export const getCellValueRenderer =
       cellValue = pendingSaveValue;
     } else if (row.flattened) {
       // Otherwise, use the value from the row
-      cellValue = row.flattened[columnId];
+      cellValue = row.flattened[columnId]?.toString();
     }
-
     if (cellValue == null) {
       return null;
     }
@@ -60,6 +61,7 @@ export const getCellValueRenderer =
               onValueChange(docId!, { [columnId]: value });
             }}
             columnName={columnId}
+            columns={columns}
             value={cellValue}
             autoFocus
           />

src/platform/packages/private/kbn-index-editor/src/components/value_inputs_factory.tsx

@@ -0,0 +1,72 @@
+/*
+ * 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", the "GNU Affero General Public License v3.0 only", 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", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+import React, { useCallback } from 'react';
+import { EuiFieldText, EuiFieldNumber } from '@elastic/eui';
+import { DatatableColumnType } from '@kbn/expressions-plugin/common';
+import { i18n } from '@kbn/i18n';
+
+export interface ValueInputProps {
+  onError?: (error: string | null) => void;
+  value: string;
+  label?: string;
+  onChange: (event: React.ChangeEvent<HTMLInputElement>) => void;
+  onBlur?: (event: React.FocusEvent<HTMLInputElement>) => void;
+  onKeyDown?: (event: React.KeyboardEvent<HTMLInputElement>) => void;
+  autoFocus?: boolean;
+  className?: string;
+  isInvalid?: boolean;
+  placeholder?: string;
+}
+
+export const StringInput: React.FC<ValueInputProps> = ({ onError, ...restOfProps }) => (
+  <EuiFieldText compressed {...restOfProps} />
+);
+
+export const NumberInput: React.FC<ValueInputProps> = ({ onError, ...restOfProps }) => (
+  <EuiFieldNumber compressed {...restOfProps} />
+);
+
+export const BooleanInput: React.FC<ValueInputProps> = ({ onError, onChange, ...restOfProps }) => {
+  const [error, setError] = React.useState<string | null>(null);
+
+  const onChangeHandler = useCallback(
+    (e: React.ChangeEvent<HTMLInputElement>) => {
+      if (!['true', 'false'].includes(e.target.value.toLowerCase())) {
+        const booleanError = i18n.translate('indexEditor.cellValueInput.validation.boolean', {
+          defaultMessage: 'Value must be true or false',
+        });
+        setError(booleanError);
+        onError?.(booleanError);
+      } else {
+        setError(null);
+        onError?.(null);
+      }
+      onChange?.(e);
+    },
+    [onError, onChange]
+  );
+
+  return (
+    <EuiFieldText compressed {...restOfProps} onChange={onChangeHandler} isInvalid={!!error} />
+  );
+};
+
+export function getInputComponentForType(
+  type: DatatableColumnType | undefined
+): React.FC<ValueInputProps> {
+  switch (type) {
+    case 'number':
+      return NumberInput;
+    case 'boolean':
+      return BooleanInput;
+    default:
+      return StringInput;
+  }
+}