CB-4134 adjust cursor position

webapp/packages/core-blocks/src/FormControls/Textarea.tsx

@@ -6,7 +6,7 @@
  * you may not use this file except in compliance with the License.
  */
 import { observer } from 'mobx-react-lite';
-import { useCallback, useContext } from 'react';
+import { useCallback, useContext, useLayoutEffect, useRef } from 'react';
 
 import { filterLayoutFakeProps, getLayoutProps } from '../Containers/filterLayoutFakeProps';
 import type { ILayoutSizeProps } from '../Containers/ILayoutSizeProps';
@@ -23,6 +23,7 @@ type BaseProps = Omit<React.TextareaHTMLAttributes<HTMLTextAreaElement>, 'onChan
     description?: string;
     labelTooltip?: string;
     embedded?: boolean;
+    cursorInitiallyAtEnd?: boolean;
   };
 
 type ControlledProps = BaseProps & {
@@ -54,9 +55,11 @@ export const Textarea: TextareaType = observer(function Textarea({
   description,
   labelTooltip,
   embedded,
+  cursorInitiallyAtEnd,
   onChange = () => {},
   ...rest
 }: ControlledProps | ObjectProps<any, any>) {
+  const textareaRef = useRef<HTMLTextAreaElement | null>(null);
   const layoutProps = getLayoutProps(rest);
   rest = filterLayoutFakeProps(rest);
   const styles = useS(textareaStyle);
@@ -79,13 +82,21 @@ export const Textarea: TextareaType = observer(function Textarea({
 
   const value = state ? state[name] : controlledValue;
 
+  useLayoutEffect(() => {
+    if (cursorInitiallyAtEnd && typeof value === 'string') {
+      const position = value.length;
+      textareaRef.current?.setSelectionRange(position, position);
+    }
+  }, [cursorInitiallyAtEnd]);
+
   return (
     <Field {...layoutProps} className={s(styles, { field: true, embedded }, className)}>
-      <FieldLabel  className={s(styles, { fieldLabel: true })} title={labelTooltip || rest.title} required={required}>
+      <FieldLabel className={s(styles, { fieldLabel: true })} title={labelTooltip || rest.title} required={required}>
         {children}
       </FieldLabel>
       <textarea
         {...rest}
+        ref={textareaRef}
         required={required}
         className={s(styles, { textarea: true })}
         value={value ?? ''}

webapp/packages/plugin-codemirror6/src/IReactCodemirrorProps.ts

@@ -5,17 +5,25 @@
  * Licensed under the Apache License, Version 2.0.
  * you may not use this file except in compliance with the License.
  */
-import type { Compartment, Extension } from '@codemirror/state';
+import type { Compartment, Extension, SelectionRange } from '@codemirror/state';
 import type { ViewUpdate } from '@codemirror/view';
 
+/** Currently we support only main selection range */
+interface ISelection {
+  anchor: number;
+  head?: number;
+}
+
 export interface IReactCodeMirrorProps extends React.PropsWithChildren {
   /** in case of using editor in editing mode its better for performance to use getValue instead */
   value?: string;
+  cursor?: ISelection;
   incomingValue?: string;
   getValue?: () => string;
   extensions?: Map<Compartment, Extension>;
   readonly?: boolean;
   autoFocus?: boolean;
   onChange?: (value: string, update: ViewUpdate) => void;
+  onCursorChange?: (selection: SelectionRange, update: ViewUpdate) => void;
   onUpdate?: (update: ViewUpdate) => void;
 }

webapp/packages/plugin-codemirror6/src/ReactCodemirror.tsx

@@ -6,7 +6,7 @@
  * you may not use this file except in compliance with the License.
  */
 import { MergeView } from '@codemirror/merge';
-import { Annotation, Compartment, Extension, StateEffect } from '@codemirror/state';
+import { Annotation, Compartment, Extension, StateEffect, TransactionSpec } from '@codemirror/state';
 import { EditorView, ViewUpdate } from '@codemirror/view';
 import { observer } from 'mobx-react-lite';
 import { forwardRef, useImperativeHandle, useLayoutEffect, useMemo, useRef, useState } from 'react';
@@ -22,7 +22,19 @@ const External = Annotation.define<boolean>();
 
 export const ReactCodemirror = observer<IReactCodeMirrorProps, IEditorRef>(
   forwardRef(function ReactCodemirror(
-    { children, getValue, value, incomingValue, extensions = new Map<Compartment, Extension>(), readonly, autoFocus, onChange, onUpdate },
+    {
+      children,
+      getValue,
+      value,
+      cursor,
+      incomingValue,
+      extensions = new Map<Compartment, Extension>(),
+      readonly,
+      autoFocus,
+      onChange,
+      onCursorChange,
+      onUpdate,
+    },
     ref,
   ) {
     value = value ?? getValue?.();
@@ -32,7 +44,7 @@ export const ReactCodemirror = observer<IReactCodeMirrorProps, IEditorRef>(
     const [container, setContainer] = useState<HTMLDivElement | null>(null);
     const [view, setView] = useState<EditorView | null>(null);
     const [incomingView, setIncomingView] = useState<EditorView | null>(null);
-    const callbackRef = useObjectRef({ onChange, onUpdate });
+    const callbackRef = useObjectRef({ onChange, onCursorChange, onUpdate });
     const [selection, setSelection] = useState(view?.state.selection.main ?? null);
 
     useLayoutEffect(() => {
@@ -50,6 +62,11 @@ export const ReactCodemirror = observer<IReactCodeMirrorProps, IEditorRef>(
             callbackRef.onChange?.(value, update);
           }
 
+          if (update.selectionSet && !remote) {
+            const selection = update.state.selection.main;
+            callbackRef.onCursorChange?.(selection, update);
+          }
+
           callbackRef.onUpdate?.(update);
         });
 
@@ -136,13 +153,22 @@ export const ReactCodemirror = observer<IReactCodeMirrorProps, IEditorRef>(
     });
 
     useLayoutEffect(() => {
-      if (value !== undefined && view && value !== view.state.doc.toString()) {
-        view.dispatch({
-          changes: { from: 0, to: view.state.doc.length, insert: value },
-          annotations: [External.of(true)],
-        });
+      if (view) {
+        const transaction: TransactionSpec = { annotations: [External.of(true)] };
+
+        if (value !== undefined && value !== view.state.doc.toString()) {
+          transaction.changes = { from: 0, to: view.state.doc.length, insert: value };
+        }
+
+        if (cursor && (view.state.selection.main.anchor !== cursor.anchor || view.state.selection.main.head !== cursor.head)) {
+          transaction.selection = cursor;
+        }
+
+        if (transaction.changes || transaction.selection) {
+          view.dispatch(transaction);
+        }
       }
-    }, [value, view]);
+    });
 
     useLayoutEffect(() => {
       if (incomingValue !== undefined && incomingView && incomingValue !== incomingView.state.doc.toString()) {

webapp/packages/plugin-sql-editor-new/src/SQLEditor/SQLCodeEditorPanel/SQLCodeEditorPanel.tsx

@@ -125,12 +125,17 @@ export const SQLCodeEditorPanel: TabContainerPanelComponent<ISqlEditorModeProps>
       <SQLCodeEditorLoader
         ref={setEditorRef}
         getValue={() => data.value}
+        cursor={{
+          anchor: data.cursor.begin,
+          head: data.cursor.end,
+        }}
         incomingValue={data.incomingValue}
         extensions={extensions}
         readonly={data.readonly}
         autoFocus
         lineNumbers
         onChange={panel.onQueryChange}
+        onCursorChange={selection => panel.onCursorChange(selection.anchor, selection.head)}
         onUpdate={panel.onUpdate}
       >
         {data.isIncomingChanges && (

webapp/packages/plugin-sql-editor-new/src/SQLEditor/SQLCodeEditorPanel/useSQLCodeEditorPanel.ts

@@ -17,6 +17,7 @@ import type { IEditor } from '../SQLCodeEditor/useSQLCodeEditor';
 interface State {
   highlightActiveQuery: () => void;
   onQueryChange: (query: string) => void;
+  onCursorChange: (begin: number, end?: number) => void;
   onUpdate: (update: ViewUpdate) => void;
 }
 
@@ -35,6 +36,9 @@ export function useSQLCodeEditorPanel(data: ISQLEditorData, editor: IEditor) {
       onQueryChange(query: string) {
         this.data.setScript(query);
       },
+      onCursorChange(begin: number, end?: number) {
+        this.data.setCursor(begin, end);
+      },
       onUpdate(update: ViewUpdate) {
         const transactions = update.transactions.filter(t => t.selection !== undefined);
         const lastTransaction = transactions[transactions.length - 1] as Transaction | undefined;

webapp/packages/plugin-sql-editor/src/SqlEditor/useSqlEditor.ts

@@ -138,7 +138,6 @@ export function useSqlEditor(state: ISqlEditorTabState): ISQLEditorData {
       onExecute: new SyncExecutor(),
       onSegmentExecute: new SyncExecutor(),
       onUpdate: new SyncExecutor(),
-      onFormat: new SyncExecutor(),
       parser: new SQLParser(),
 
       cursor: { begin: 0, end: 0 },
@@ -225,8 +224,8 @@ export function useSqlEditor(state: ISqlEditorTabState): ISQLEditorData {
           this.readonlyState = true;
           const formatted = await this.sqlDialectInfoService.formatScript(this.dataSource.executionContext, script.query);
 
-          this.onFormat.execute([script, formatted]);
           this.setScript(query.substring(0, script.begin) + formatted + query.substring(script.end));
+          this.setCursor(script.begin + formatted.length);
         } finally {
           this.readonlyState = false;
         }