TypeScript ICursorSimpleModel.getLineContent方法代码示例

	public static deleteWordPartLeft(wordSeparators: WordCharacterClassifier, model: ICursorSimpleModel, selection: Selection, whitespaceHeuristics: boolean, wordNavigationType: WordNavigationType): Range {
		if (!selection.isEmpty()) {
			return selection;
		}

		const position = new Position(selection.positionLineNumber, selection.positionColumn);
		const lineNumber = position.lineNumber;
		const column = position.column;

		if (lineNumber === 1 && column === 1) {
			// Ignore deleting at beginning of file
			return null;
		}

		if (whitespaceHeuristics) {
			let r = WordOperations._deleteWordLeftWhitespace(model, position);
			if (r) {
				return r;
			}
		}

		const wordRange = WordOperations.deleteWordLeft(wordSeparators, model, selection, whitespaceHeuristics, wordNavigationType);
		const lastWordPartEnd = _lastWordPartEnd(model.getLineContent(position.lineNumber), position.column - 2);
		const wordPartRange = new Range(lineNumber, column, lineNumber, lastWordPartEnd + 2);

		if (wordPartRange.getStartPosition().isBeforeOrEqual(wordRange.getStartPosition())) {
			return wordRange;
		}
		return wordPartRange;
	}

	public static down(config: CursorConfiguration, model: ICursorSimpleModel, lineNumber: number, column: number, leftoverVisibleColumns: number, count: number, allowMoveOnLastLine: boolean): CursorPosition {
		const currentVisibleColumn = CursorColumns.visibleColumnFromColumn(model.getLineContent(lineNumber), column, config.tabSize) + leftoverVisibleColumns;

		lineNumber = lineNumber + count;
		let lineCount = model.getLineCount();
		if (lineNumber > lineCount) {
			lineNumber = lineCount;
			if (allowMoveOnLastLine) {
				column = model.getLineMaxColumn(lineNumber);
			} else {
				column = Math.min(model.getLineMaxColumn(lineNumber), column);
				if (CursorColumns.isInsideSurrogatePair(model, lineNumber, column)) {
					column = column - 1;
				}
			}
		} else {
			column = CursorColumns.columnFromVisibleColumn2(config, model, lineNumber, currentVisibleColumn);
			if (CursorColumns.isInsideSurrogatePair(model, lineNumber, column)) {
				column = column - 1;
			}
		}

		leftoverVisibleColumns = currentVisibleColumn - CursorColumns.visibleColumnFromColumn(model.getLineContent(lineNumber), column, config.tabSize);

		return new CursorPosition(lineNumber, column, leftoverVisibleColumns);
	}

	public static deleteWordPartRight(wordSeparators: WordCharacterClassifier, model: ICursorSimpleModel, selection: Selection, whitespaceHeuristics: boolean, wordNavigationType: WordNavigationType): Range {
		if (!selection.isEmpty()) {
			return selection;
		}

		const position = new Position(selection.positionLineNumber, selection.positionColumn);
		const lineNumber = position.lineNumber;
		const column = position.column;

		const lineCount = model.getLineCount();
		const maxColumn = model.getLineMaxColumn(lineNumber);
		if (lineNumber === lineCount && column === maxColumn) {
			// Ignore deleting at end of file
			return null;
		}

		if (whitespaceHeuristics) {
			let r = WordOperations._deleteWordRightWhitespace(model, position);
			if (r) {
				return r;
			}
		}

		const wordRange = WordOperations.deleteWordRight(wordSeparators, model, selection, whitespaceHeuristics, wordNavigationType);
		const nextWordPartBegin = _nextWordPartBegin(model.getLineContent(position.lineNumber), position.column);
		const wordPartRange = new Range(lineNumber, column, lineNumber, nextWordPartBegin);

		if (wordRange.getEndPosition().isBeforeOrEqual(wordPartRange.getEndPosition())) {
			return wordRange;
		}
		return wordPartRange;
	}

	private static _isAutoClosingPairDelete(config: CursorConfiguration, model: ICursorSimpleModel, selections: Selection[]): boolean {
		if (!config.autoClosingBrackets) {
			return false;
		}

		for (let i = 0, len = selections.length; i < len; i++) {
			const selection = selections[i];
			const position = selection.getPosition();

			if (!selection.isEmpty()) {
				return false;
			}

			const lineText = model.getLineContent(position.lineNumber);
			const character = lineText[position.column - 2];

			if (!config.autoClosingPairsOpen.hasOwnProperty(character)) {
				return false;
			}

			const afterCharacter = lineText[position.column - 1];
			const closeCharacter = config.autoClosingPairsOpen[character];

			if (afterCharacter !== closeCharacter) {
				return false;
			}
		}

		return true;
	}

	public static deleteLeft(prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ICursorSimpleModel, selections: Selection[]): [boolean, ICommand[]] {

		if (this._isAutoClosingPairDelete(config, model, selections)) {
			return this._runAutoClosingPairDelete(config, model, selections);
		}

		let commands: ICommand[] = [];
		let shouldPushStackElementBefore = (prevEditOperationType !== EditOperationType.DeletingLeft);
		for (let i = 0, len = selections.length; i < len; i++) {
			const selection = selections[i];

			let deleteSelection: Range = selection;

			if (deleteSelection.isEmpty()) {
				let position = selection.getPosition();

				if (config.useTabStops && position.column > 1) {
					let lineContent = model.getLineContent(position.lineNumber);

					let firstNonWhitespaceIndex = strings.firstNonWhitespaceIndex(lineContent);
					let lastIndentationColumn = (
						firstNonWhitespaceIndex === -1
							? /* entire string is whitespace */lineContent.length + 1
							: firstNonWhitespaceIndex + 1
					);

					if (position.column <= lastIndentationColumn) {
						let fromVisibleColumn = CursorColumns.visibleColumnFromColumn2(config, model, position);
						let toVisibleColumn = CursorColumns.prevTabStop(fromVisibleColumn, config.tabSize);
						let toColumn = CursorColumns.columnFromVisibleColumn2(config, model, position.lineNumber, toVisibleColumn);
						deleteSelection = new Range(position.lineNumber, toColumn, position.lineNumber, position.column);
					} else {
						deleteSelection = new Range(position.lineNumber, position.column - 1, position.lineNumber, position.column);
					}
				} else {
					let leftOfPosition = MoveOperations.left(config, model, position.lineNumber, position.column);
					deleteSelection = new Range(
						leftOfPosition.lineNumber,
						leftOfPosition.column,
						position.lineNumber,
						position.column
					);
				}
			}

			if (deleteSelection.isEmpty()) {
				// Probably at beginning of file => ignore
				commands[i] = null;
				continue;
			}

			if (deleteSelection.startLineNumber !== deleteSelection.endLineNumber) {
				shouldPushStackElementBefore = true;
			}

			commands[i] = new ReplaceCommand(deleteSelection, '');
		}
		return [shouldPushStackElementBefore, commands];
	}

	protected static _deleteWordLeftWhitespace(model: ICursorSimpleModel, position: Position): Range {
		const lineContent = model.getLineContent(position.lineNumber);
		const startIndex = position.column - 2;
		const lastNonWhitespace = strings.lastNonWhitespaceIndex(lineContent, startIndex);
		if (lastNonWhitespace + 1 < startIndex) {
			return new Range(position.lineNumber, lastNonWhitespace + 2, position.lineNumber, position.column);
		}
		return null;
	}

	public static deleteLeft(config: CursorConfiguration, model: ICursorSimpleModel, cursor: SingleCursorState): EditOperationResult {
		let r = this.autoClosingPairDelete(config, model, cursor);
		if (r) {
			// This was a case for an auto-closing pair delete
			return r;
		}

		let deleteSelection: Range = cursor.selection;

		if (deleteSelection.isEmpty()) {
			let position = cursor.position;

			if (config.useTabStops && position.column > 1) {
				let lineContent = model.getLineContent(position.lineNumber);

				let firstNonWhitespaceIndex = strings.firstNonWhitespaceIndex(lineContent);
				let lastIndentationColumn = (
					firstNonWhitespaceIndex === -1
						? /* entire string is whitespace */lineContent.length + 1
						: firstNonWhitespaceIndex + 1
				);

				if (position.column <= lastIndentationColumn) {
					let fromVisibleColumn = CursorColumns.visibleColumnFromColumn2(config, model, position);
					let toVisibleColumn = CursorColumns.prevTabStop(fromVisibleColumn, config.tabSize);
					let toColumn = CursorColumns.columnFromVisibleColumn2(config, model, position.lineNumber, toVisibleColumn);
					deleteSelection = new Range(position.lineNumber, toColumn, position.lineNumber, position.column);
				} else {
					deleteSelection = new Range(position.lineNumber, position.column - 1, position.lineNumber, position.column);
				}
			} else {
				let leftOfPosition = MoveOperations.left(config, model, position.lineNumber, position.column);
				deleteSelection = new Range(
					leftOfPosition.lineNumber,
					leftOfPosition.column,
					position.lineNumber,
					position.column
				);
			}
		}

		if (deleteSelection.isEmpty()) {
			// Probably at beginning of file => ignore
			return null;
		}

		let shouldPushStackElementBefore = false;
		if (deleteSelection.startLineNumber !== deleteSelection.endLineNumber) {
			shouldPushStackElementBefore = true;
		}

		return new EditOperationResult(new ReplaceCommand(deleteSelection, ''), {
			shouldPushStackElementBefore: shouldPushStackElementBefore,
			shouldPushStackElementAfter: false
		});
	}

	protected static _deleteWordRightWhitespace(model: ICursorSimpleModel, position: Position): Range {
		const lineContent = model.getLineContent(position.lineNumber);
		const startIndex = position.column - 1;
		const firstNonWhitespace = this._findFirstNonWhitespaceChar(lineContent, startIndex);
		if (startIndex + 1 < firstNonWhitespace) {
			// bingo
			return new Range(position.lineNumber, position.column, position.lineNumber, firstNonWhitespace + 1);
		}
		return null;
	}

	private static _deleteWordLeftWhitespace(config: CursorConfiguration, model: ICursorSimpleModel, cursor: SingleCursorState): EditOperationResult {
		let position = cursor.position;
		let lineContent = model.getLineContent(position.lineNumber);
		let startIndex = position.column - 2;
		let lastNonWhitespace = strings.lastNonWhitespaceIndex(lineContent, startIndex);
		if (lastNonWhitespace + 1 < startIndex) {
			let deleteRange = new Range(position.lineNumber, lastNonWhitespace + 2, position.lineNumber, position.column);
			return new EditOperationResult(new ReplaceCommand(deleteRange, ''), {
				shouldPushStackElementBefore: false,
				shouldPushStackElementAfter: false
			});
		}
		return null;
	}

	private static _deleteWordRightWhitespace(config: CursorConfiguration, model: ICursorSimpleModel, cursor: SingleCursorState): EditOperationResult {
		let position = cursor.position;
		let lineContent = model.getLineContent(position.lineNumber);
		let startIndex = position.column - 1;
		let firstNonWhitespace = this._findFirstNonWhitespaceChar(lineContent, startIndex);
		if (startIndex + 1 < firstNonWhitespace) {
			// bingo
			let deleteRange = new Range(position.lineNumber, position.column, position.lineNumber, firstNonWhitespace + 1);
			return new EditOperationResult(new ReplaceCommand(deleteRange, ''), {
				shouldPushStackElementBefore: false,
				shouldPushStackElementAfter: false
			});
		}
		return null;
	}