Prevents cursor to move into injected text. Fixes bracket decoration …

…bug.

src/vs/editor/browser/controller/mouseTarget.ts

@@ -18,6 +18,7 @@ import { IViewModel } from 'vs/editor/common/viewModel/viewModel';
 import { CursorColumns } from 'vs/editor/common/controller/cursorCommon';
 import * as dom from 'vs/base/browser/dom';
 import { AtomicTabMoveOperations, Direction } from 'vs/editor/common/controller/cursorAtomicMoveOperations';
+import { PositionAffinity } from 'vs/editor/common/model';
 
 export interface IViewZoneData {
 	viewZoneId: string;
@@ -955,6 +956,12 @@ export class MouseTargetFactory {
 		} else if ((<any>document).caretPositionFromPoint) {
 			result = this._doHitTestWithCaretPositionFromPoint(ctx, request.pos.toClientCoordinates());
 		}
+		if (result.type === HitTestResultType.Content) {
+			const normalizedPosition = ctx.model.normalizePosition(result.position, PositionAffinity.None);
+			if (!normalizedPosition.equals(result.position)) {
+				result = new ContentHitTestResult(normalizedPosition, result.spanNode);
+			}
+		}
 		// Snap to the nearest soft tab boundary if atomic soft tabs are enabled.
 		if (result.type === HitTestResultType.Content && ctx.stickyTabStops) {
 			result = new ContentHitTestResult(this._snapToSoftTabBoundary(result.position, ctx.model), result.spanNode);

src/vs/editor/common/controller/cursor.ts

@@ -144,7 +144,7 @@ export class CursorsController extends Disposable {
 		this._knownModelVersionId = this._model.getVersionId();
 		this._viewModel = viewModel;
 		this._coordinatesConverter = coordinatesConverter;
-		this.context = new CursorContext(this._model, this._coordinatesConverter, cursorConfig);
+		this.context = new CursorContext(this._model, this._viewModel, this._coordinatesConverter, cursorConfig);
 		this._cursors = new CursorCollection(this.context);
 
 		this._hasFocus = false;
@@ -163,7 +163,7 @@ export class CursorsController extends Disposable {
 	}
 
 	public updateConfiguration(cursorConfig: CursorConfiguration): void {
-		this.context = new CursorContext(this._model, this._coordinatesConverter, cursorConfig);
+		this.context = new CursorContext(this._model, this._viewModel, this._coordinatesConverter, cursorConfig);
 		this._cursors.updateContext(this.context);
 	}
 

src/vs/editor/common/controller/cursorCommon.ts

@@ -11,7 +11,7 @@ import { Position } from 'vs/editor/common/core/position';
 import { Range } from 'vs/editor/common/core/range';
 import { ISelection, Selection } from 'vs/editor/common/core/selection';
 import { ICommand, IConfiguration } from 'vs/editor/common/editorCommon';
-import { ITextModel, PositionNormalizationAffinity, TextModelResolvedOptions } from 'vs/editor/common/model';
+import { ITextModel, PositionAffinity, TextModelResolvedOptions } from 'vs/editor/common/model';
 import { TextModel } from 'vs/editor/common/model/textModel';
 import { LanguageIdentifier } from 'vs/editor/common/modes';
 import { AutoClosingPairs, IAutoClosingPair } from 'vs/editor/common/modes/languageConfiguration';
@@ -221,7 +221,8 @@ export interface ICursorSimpleModel {
 	getLineMaxColumn(lineNumber: number): number;
 	getLineFirstNonWhitespaceColumn(lineNumber: number): number;
 	getLineLastNonWhitespaceColumn(lineNumber: number): number;
-	normalizePosition(position: Position, affinity: PositionNormalizationAffinity): Position;
+	normalizePosition(position: Position, affinity: PositionAffinity): Position;
+
 	/**
 	 * Gets the column at which indentation stops at a given line.
 	 * @internal
@@ -321,11 +322,13 @@ export class CursorContext {
 	_cursorContextBrand: void = undefined;
 
 	public readonly model: ITextModel;
+	public readonly viewModel: ICursorSimpleModel;
 	public readonly coordinatesConverter: ICoordinatesConverter;
 	public readonly cursorConfig: CursorConfiguration;
 
-	constructor(model: ITextModel, coordinatesConverter: ICoordinatesConverter, cursorConfig: CursorConfiguration) {
+	constructor(model: ITextModel, viewModel: ICursorSimpleModel, coordinatesConverter: ICoordinatesConverter, cursorConfig: CursorConfiguration) {
 		this.model = model;
+		this.viewModel = viewModel;
 		this.coordinatesConverter = coordinatesConverter;
 		this.cursorConfig = cursorConfig;
 	}

src/vs/editor/common/controller/cursorMoveOperations.ts

@@ -9,7 +9,7 @@ import { Range } from 'vs/editor/common/core/range';
 import * as strings from 'vs/base/common/strings';
 import { Constants } from 'vs/base/common/uint';
 import { AtomicTabMoveOperations, Direction } from 'vs/editor/common/controller/cursorAtomicMoveOperations';
-import { PositionNormalizationAffinity } from 'vs/editor/common/model';
+import { PositionAffinity } from 'vs/editor/common/model';
 
 export class CursorPosition {
 	_cursorPositionBrand: void = undefined;
@@ -75,7 +75,7 @@ export class MoveOperations {
 			const pos = cursor.position.delta(undefined, -(noOfColumns - 1));
 			// We clip the position before normalization, as normalization is not defined
 			// for possibly negative columns.
-			const normalizedPos = model.normalizePosition(MoveOperations.clipPositionColumn(pos, model), PositionNormalizationAffinity.Left);
+			const normalizedPos = model.normalizePosition(MoveOperations.clipPositionColumn(pos, model), PositionAffinity.Left);
 			const p = MoveOperations.left(config, model, normalizedPos);
 
 			lineNumber = p.lineNumber;
@@ -144,7 +144,7 @@ export class MoveOperations {
 			column = cursor.selection.endColumn;
 		} else {
 			const pos = cursor.position.delta(undefined, noOfColumns - 1);
-			const normalizedPos = model.normalizePosition(MoveOperations.clipPositionColumn(pos, model), PositionNormalizationAffinity.Right);
+			const normalizedPos = model.normalizePosition(MoveOperations.clipPositionColumn(pos, model), PositionAffinity.Right);
 			const r = MoveOperations.right(config, model, normalizedPos);
 			lineNumber = r.lineNumber;
 			column = r.column;

src/vs/editor/common/controller/oneCursor.ts

@@ -7,7 +7,7 @@ import { CursorContext, CursorState, SingleCursorState } from 'vs/editor/common/
 import { Position } from 'vs/editor/common/core/position';
 import { Range } from 'vs/editor/common/core/range';
 import { Selection, SelectionDirection } from 'vs/editor/common/core/selection';
-import { TrackedRangeStickiness } from 'vs/editor/common/model';
+import { PositionAffinity, TrackedRangeStickiness } from 'vs/editor/common/model';
 
 /**
  * Represents a single cursor.
@@ -78,6 +78,33 @@ export class Cursor {
 	}
 
 	private _setState(context: CursorContext, modelState: SingleCursorState | null, viewState: SingleCursorState | null): void {
+		if (viewState) {
+			const cache = new Map<string, Position>();
+			function normalize(pos: Position): Position {
+				const existing = cache.get(pos.toString());
+				if (existing) {
+					return existing;
+				}
+				const result = context.viewModel.normalizePosition(pos, PositionAffinity.None);
+				cache.set(pos.toString(), result);
+				return result;
+			}
+			const normalizedPosition = normalize(viewState.position);
+			const columnDelta = viewState.position.column - normalizedPosition.column;
+
+			const updatedState = new SingleCursorState(
+				Selection.fromPositions(
+					normalize(viewState.selectionStart.getStartPosition()),
+					normalize(viewState.selectionStart.getEndPosition())
+				),
+				viewState.selectionStartLeftoverVisibleColumns + columnDelta,
+				normalizedPosition,
+				viewState.leftoverVisibleColumns + columnDelta,
+			);
+
+			viewState = updatedState;
+		}
+
 		if (!modelState) {
 			if (!viewState) {
 				return;

src/vs/editor/common/model.ts

@@ -1293,9 +1293,16 @@ export interface ITextModel {
 	/**
 	 * Among all positions that are projected to the same position in the underlying text model as
 	 * the given position, select a unique position as indicated by the affinity.
+	 *
+	 * PositionAffinity.Left:
+	 * The normalized position must be equal or left to the requested position.
+	 *
+	 * PositionAffinity.Right:
+	 * The normalized position must be equal or right to the requested position.
+	 *
 	 * @internal
 	 */
-	normalizePosition(position: Position, affinity: PositionNormalizationAffinity): Position;
+	normalizePosition(position: Position, affinity: PositionAffinity): Position;
 
 	/**
 	 * Gets the column at which indentation stops at a given line.
@@ -1307,15 +1314,21 @@ export interface ITextModel {
 /**
  * @internal
  */
-export const enum PositionNormalizationAffinity {
+export const enum PositionAffinity {
 	/**
 	 * Prefers the left most position.
 	*/
 	Left = 0,
+
 	/**
 	 * Prefers the right most position.
 	*/
 	Right = 1,
+
+	/**
+	 * No preference.
+	*/
+	None = 2,
 }
 
 /**

src/vs/editor/common/model/textModel.ts

@@ -3122,7 +3122,7 @@ export class TextModel extends Disposable implements model.ITextModel, IDecorati
 	}
 
 	//#endregion
-	normalizePosition(position: Position, affinity: model.PositionNormalizationAffinity): Position {
+	normalizePosition(position: Position, affinity: model.PositionAffinity): Position {
 		return position;
 	}