56 lines
2.4 KiB
TypeScript
56 lines
2.4 KiB
TypeScript
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { Range } from 'vs/editor/common/core/range';
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import { Selection } from 'vs/editor/common/core/selection';
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import { ICommand, ICursorStateComputerData, IEditOperationBuilder } from 'vs/editor/common/editorCommon';
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import { ITextModel } from 'vs/editor/common/model';
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export class MoveCaretCommand implements ICommand {
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private readonly _selection: Selection;
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private readonly _isMovingLeft: boolean;
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constructor(selection: Selection, isMovingLeft: boolean) {
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this._selection = selection;
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this._isMovingLeft = isMovingLeft;
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}
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public getEditOperations(model: ITextModel, builder: IEditOperationBuilder): void {
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if (this._selection.startLineNumber !== this._selection.endLineNumber || this._selection.isEmpty()) {
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return;
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}
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const lineNumber = this._selection.startLineNumber;
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const startColumn = this._selection.startColumn;
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const endColumn = this._selection.endColumn;
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if (this._isMovingLeft && startColumn === 1) {
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return;
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}
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if (!this._isMovingLeft && endColumn === model.getLineMaxColumn(lineNumber)) {
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return;
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}
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if (this._isMovingLeft) {
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const rangeBefore = new Range(lineNumber, startColumn - 1, lineNumber, startColumn);
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const charBefore = model.getValueInRange(rangeBefore);
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builder.addEditOperation(rangeBefore, null);
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builder.addEditOperation(new Range(lineNumber, endColumn, lineNumber, endColumn), charBefore);
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} else {
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const rangeAfter = new Range(lineNumber, endColumn, lineNumber, endColumn + 1);
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const charAfter = model.getValueInRange(rangeAfter);
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builder.addEditOperation(rangeAfter, null);
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builder.addEditOperation(new Range(lineNumber, startColumn, lineNumber, startColumn), charAfter);
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}
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}
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public computeCursorState(model: ITextModel, helper: ICursorStateComputerData): Selection {
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if (this._isMovingLeft) {
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return new Selection(this._selection.startLineNumber, this._selection.startColumn - 1, this._selection.endLineNumber, this._selection.endColumn - 1);
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} else {
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return new Selection(this._selection.startLineNumber, this._selection.startColumn + 1, this._selection.endLineNumber, this._selection.endColumn + 1);
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}
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}
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}
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