monaco-editor
Version:
A browser based code editor
288 lines (287 loc) • 15.3 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import * as strings from '../../../base/common/strings.js';
import { CursorColumns } from '../core/cursorColumns.js';
import { Position } from '../core/position.js';
import { Range } from '../core/range.js';
import { AtomicTabMoveOperations } from './cursorAtomicMoveOperations.js';
import { SingleCursorState } from '../cursorCommon.js';
export class CursorPosition {
constructor(lineNumber, column, leftoverVisibleColumns) {
this._cursorPositionBrand = undefined;
this.lineNumber = lineNumber;
this.column = column;
this.leftoverVisibleColumns = leftoverVisibleColumns;
}
}
export class MoveOperations {
static leftPosition(model, position) {
if (position.column > model.getLineMinColumn(position.lineNumber)) {
return position.delta(undefined, -strings.prevCharLength(model.getLineContent(position.lineNumber), position.column - 1));
}
else if (position.lineNumber > 1) {
const newLineNumber = position.lineNumber - 1;
return new Position(newLineNumber, model.getLineMaxColumn(newLineNumber));
}
else {
return position;
}
}
static leftPositionAtomicSoftTabs(model, position, tabSize) {
if (position.column <= model.getLineIndentColumn(position.lineNumber)) {
const minColumn = model.getLineMinColumn(position.lineNumber);
const lineContent = model.getLineContent(position.lineNumber);
const newPosition = AtomicTabMoveOperations.atomicPosition(lineContent, position.column - 1, tabSize, 0 /* Direction.Left */);
if (newPosition !== -1 && newPosition + 1 >= minColumn) {
return new Position(position.lineNumber, newPosition + 1);
}
}
return this.leftPosition(model, position);
}
static left(config, model, position) {
const pos = config.stickyTabStops
? MoveOperations.leftPositionAtomicSoftTabs(model, position, config.tabSize)
: MoveOperations.leftPosition(model, position);
return new CursorPosition(pos.lineNumber, pos.column, 0);
}
/**
* @param noOfColumns Must be either `1`
* or `Math.round(viewModel.getLineContent(viewLineNumber).length / 2)` (for half lines).
*/
static moveLeft(config, model, cursor, inSelectionMode, noOfColumns) {
let lineNumber, column;
if (cursor.hasSelection() && !inSelectionMode) {
// If the user has a selection and does not want to extend it,
// put the cursor at the beginning of the selection.
lineNumber = cursor.selection.startLineNumber;
column = cursor.selection.startColumn;
}
else {
// This has no effect if noOfColumns === 1.
// It is ok to do so in the half-line scenario.
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), 0 /* PositionAffinity.Left */);
const p = MoveOperations.left(config, model, normalizedPos);
lineNumber = p.lineNumber;
column = p.column;
}
return cursor.move(inSelectionMode, lineNumber, column, 0);
}
/**
* Adjusts the column so that it is within min/max of the line.
*/
static clipPositionColumn(position, model) {
return new Position(position.lineNumber, MoveOperations.clipRange(position.column, model.getLineMinColumn(position.lineNumber), model.getLineMaxColumn(position.lineNumber)));
}
static clipRange(value, min, max) {
if (value < min) {
return min;
}
if (value > max) {
return max;
}
return value;
}
static rightPosition(model, lineNumber, column) {
if (column < model.getLineMaxColumn(lineNumber)) {
column = column + strings.nextCharLength(model.getLineContent(lineNumber), column - 1);
}
else if (lineNumber < model.getLineCount()) {
lineNumber = lineNumber + 1;
column = model.getLineMinColumn(lineNumber);
}
return new Position(lineNumber, column);
}
static rightPositionAtomicSoftTabs(model, lineNumber, column, tabSize, indentSize) {
if (column < model.getLineIndentColumn(lineNumber)) {
const lineContent = model.getLineContent(lineNumber);
const newPosition = AtomicTabMoveOperations.atomicPosition(lineContent, column - 1, tabSize, 1 /* Direction.Right */);
if (newPosition !== -1) {
return new Position(lineNumber, newPosition + 1);
}
}
return this.rightPosition(model, lineNumber, column);
}
static right(config, model, position) {
const pos = config.stickyTabStops
? MoveOperations.rightPositionAtomicSoftTabs(model, position.lineNumber, position.column, config.tabSize, config.indentSize)
: MoveOperations.rightPosition(model, position.lineNumber, position.column);
return new CursorPosition(pos.lineNumber, pos.column, 0);
}
static moveRight(config, model, cursor, inSelectionMode, noOfColumns) {
let lineNumber, column;
if (cursor.hasSelection() && !inSelectionMode) {
// If we are in selection mode, move right without selection cancels selection and puts cursor at the end of the selection
lineNumber = cursor.selection.endLineNumber;
column = cursor.selection.endColumn;
}
else {
const pos = cursor.position.delta(undefined, noOfColumns - 1);
const normalizedPos = model.normalizePosition(MoveOperations.clipPositionColumn(pos, model), 1 /* PositionAffinity.Right */);
const r = MoveOperations.right(config, model, normalizedPos);
lineNumber = r.lineNumber;
column = r.column;
}
return cursor.move(inSelectionMode, lineNumber, column, 0);
}
static vertical(config, model, lineNumber, column, leftoverVisibleColumns, newLineNumber, allowMoveOnEdgeLine, normalizationAffinity) {
const currentVisibleColumn = CursorColumns.visibleColumnFromColumn(model.getLineContent(lineNumber), column, config.tabSize) + leftoverVisibleColumns;
const lineCount = model.getLineCount();
const wasOnFirstPosition = (lineNumber === 1 && column === 1);
const wasOnLastPosition = (lineNumber === lineCount && column === model.getLineMaxColumn(lineNumber));
const wasAtEdgePosition = (newLineNumber < lineNumber ? wasOnFirstPosition : wasOnLastPosition);
lineNumber = newLineNumber;
if (lineNumber < 1) {
lineNumber = 1;
if (allowMoveOnEdgeLine) {
column = model.getLineMinColumn(lineNumber);
}
else {
column = Math.min(model.getLineMaxColumn(lineNumber), column);
}
}
else if (lineNumber > lineCount) {
lineNumber = lineCount;
if (allowMoveOnEdgeLine) {
column = model.getLineMaxColumn(lineNumber);
}
else {
column = Math.min(model.getLineMaxColumn(lineNumber), column);
}
}
else {
column = config.columnFromVisibleColumn(model, lineNumber, currentVisibleColumn);
}
if (wasAtEdgePosition) {
leftoverVisibleColumns = 0;
}
else {
leftoverVisibleColumns = currentVisibleColumn - CursorColumns.visibleColumnFromColumn(model.getLineContent(lineNumber), column, config.tabSize);
}
if (normalizationAffinity !== undefined) {
const position = new Position(lineNumber, column);
const newPosition = model.normalizePosition(position, normalizationAffinity);
leftoverVisibleColumns = leftoverVisibleColumns + (column - newPosition.column);
lineNumber = newPosition.lineNumber;
column = newPosition.column;
}
return new CursorPosition(lineNumber, column, leftoverVisibleColumns);
}
static down(config, model, lineNumber, column, leftoverVisibleColumns, count, allowMoveOnLastLine) {
return this.vertical(config, model, lineNumber, column, leftoverVisibleColumns, lineNumber + count, allowMoveOnLastLine, 4 /* PositionAffinity.RightOfInjectedText */);
}
static moveDown(config, model, cursor, inSelectionMode, linesCount) {
let lineNumber, column;
if (cursor.hasSelection() && !inSelectionMode) {
// If we are in selection mode, move down acts relative to the end of selection
lineNumber = cursor.selection.endLineNumber;
column = cursor.selection.endColumn;
}
else {
lineNumber = cursor.position.lineNumber;
column = cursor.position.column;
}
let i = 0;
let r;
do {
r = MoveOperations.down(config, model, lineNumber + i, column, cursor.leftoverVisibleColumns, linesCount, true);
const np = model.normalizePosition(new Position(r.lineNumber, r.column), 2 /* PositionAffinity.None */);
if (np.lineNumber > lineNumber) {
break;
}
} while (i++ < 10 && lineNumber + i < model.getLineCount());
return cursor.move(inSelectionMode, r.lineNumber, r.column, r.leftoverVisibleColumns);
}
static translateDown(config, model, cursor) {
const selection = cursor.selection;
const selectionStart = MoveOperations.down(config, model, selection.selectionStartLineNumber, selection.selectionStartColumn, cursor.selectionStartLeftoverVisibleColumns, 1, false);
const position = MoveOperations.down(config, model, selection.positionLineNumber, selection.positionColumn, cursor.leftoverVisibleColumns, 1, false);
return new SingleCursorState(new Range(selectionStart.lineNumber, selectionStart.column, selectionStart.lineNumber, selectionStart.column), 0 /* SelectionStartKind.Simple */, selectionStart.leftoverVisibleColumns, new Position(position.lineNumber, position.column), position.leftoverVisibleColumns);
}
static up(config, model, lineNumber, column, leftoverVisibleColumns, count, allowMoveOnFirstLine) {
return this.vertical(config, model, lineNumber, column, leftoverVisibleColumns, lineNumber - count, allowMoveOnFirstLine, 3 /* PositionAffinity.LeftOfInjectedText */);
}
static moveUp(config, model, cursor, inSelectionMode, linesCount) {
let lineNumber, column;
if (cursor.hasSelection() && !inSelectionMode) {
// If we are in selection mode, move up acts relative to the beginning of selection
lineNumber = cursor.selection.startLineNumber;
column = cursor.selection.startColumn;
}
else {
lineNumber = cursor.position.lineNumber;
column = cursor.position.column;
}
const r = MoveOperations.up(config, model, lineNumber, column, cursor.leftoverVisibleColumns, linesCount, true);
return cursor.move(inSelectionMode, r.lineNumber, r.column, r.leftoverVisibleColumns);
}
static translateUp(config, model, cursor) {
const selection = cursor.selection;
const selectionStart = MoveOperations.up(config, model, selection.selectionStartLineNumber, selection.selectionStartColumn, cursor.selectionStartLeftoverVisibleColumns, 1, false);
const position = MoveOperations.up(config, model, selection.positionLineNumber, selection.positionColumn, cursor.leftoverVisibleColumns, 1, false);
return new SingleCursorState(new Range(selectionStart.lineNumber, selectionStart.column, selectionStart.lineNumber, selectionStart.column), 0 /* SelectionStartKind.Simple */, selectionStart.leftoverVisibleColumns, new Position(position.lineNumber, position.column), position.leftoverVisibleColumns);
}
static _isBlankLine(model, lineNumber) {
if (model.getLineFirstNonWhitespaceColumn(lineNumber) === 0) {
// empty or contains only whitespace
return true;
}
return false;
}
static moveToPrevBlankLine(config, model, cursor, inSelectionMode) {
let lineNumber = cursor.position.lineNumber;
// If our current line is blank, move to the previous non-blank line
while (lineNumber > 1 && this._isBlankLine(model, lineNumber)) {
lineNumber--;
}
// Find the previous blank line
while (lineNumber > 1 && !this._isBlankLine(model, lineNumber)) {
lineNumber--;
}
return cursor.move(inSelectionMode, lineNumber, model.getLineMinColumn(lineNumber), 0);
}
static moveToNextBlankLine(config, model, cursor, inSelectionMode) {
const lineCount = model.getLineCount();
let lineNumber = cursor.position.lineNumber;
// If our current line is blank, move to the next non-blank line
while (lineNumber < lineCount && this._isBlankLine(model, lineNumber)) {
lineNumber++;
}
// Find the next blank line
while (lineNumber < lineCount && !this._isBlankLine(model, lineNumber)) {
lineNumber++;
}
return cursor.move(inSelectionMode, lineNumber, model.getLineMinColumn(lineNumber), 0);
}
static moveToBeginningOfLine(config, model, cursor, inSelectionMode) {
const lineNumber = cursor.position.lineNumber;
const minColumn = model.getLineMinColumn(lineNumber);
const firstNonBlankColumn = model.getLineFirstNonWhitespaceColumn(lineNumber) || minColumn;
let column;
const relevantColumnNumber = cursor.position.column;
if (relevantColumnNumber === firstNonBlankColumn) {
column = minColumn;
}
else {
column = firstNonBlankColumn;
}
return cursor.move(inSelectionMode, lineNumber, column, 0);
}
static moveToEndOfLine(config, model, cursor, inSelectionMode, sticky) {
const lineNumber = cursor.position.lineNumber;
const maxColumn = model.getLineMaxColumn(lineNumber);
return cursor.move(inSelectionMode, lineNumber, maxColumn, sticky ? 1073741824 /* Constants.MAX_SAFE_SMALL_INTEGER */ - maxColumn : 0);
}
static moveToBeginningOfBuffer(config, model, cursor, inSelectionMode) {
return cursor.move(inSelectionMode, 1, 1, 0);
}
static moveToEndOfBuffer(config, model, cursor, inSelectionMode) {
const lastLineNumber = model.getLineCount();
const lastColumn = model.getLineMaxColumn(lastLineNumber);
return cursor.move(inSelectionMode, lastLineNumber, lastColumn, 0);
}
}