TypeScript CursorColumns.visibleColumnFromColumn方法代碼示例

	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 shiftIndentCount(line: string, column: number, tabSize: number): number {
		// Determine the visible column where the content starts
		let contentStartVisibleColumn = CursorColumns.visibleColumnFromColumn(line, column, tabSize);

		let desiredTabStop = CursorColumns.nextTabStop(contentStartVisibleColumn, tabSize);

		// The `desiredTabStop` is a multiple of `tabSize` => determine the number of indents
		return desiredTabStop / tabSize;
	}

	public static shiftIndent(line: string, column: number, tabSize: number, indentSize: number, insertSpaces: boolean): string {
		// Determine the visible column where the content starts
		const contentStartVisibleColumn = CursorColumns.visibleColumnFromColumn(line, column, tabSize);

		if (insertSpaces) {
			const indent = cachedStringRepeat(' ', indentSize);
			const desiredTabStop = CursorColumns.nextIndentTabStop(contentStartVisibleColumn, indentSize);
			const indentCount = desiredTabStop / indentSize; // will be an integer
			return cachedStringRepeat(indent, indentCount);
		} else {
			const indent = '\t';
			const desiredTabStop = CursorColumns.nextRenderTabStop(contentStartVisibleColumn, tabSize);
			const indentCount = desiredTabStop / tabSize; // will be an integer
			return cachedStringRepeat(indent, indentCount);
		}
	}

	public getEditOperations(model: ITokenizedModel, builder: IEditOperationBuilder): void {
		const startLine = this._selection.startLineNumber;

		let endLine = this._selection.endLineNumber;
		if (this._selection.endColumn === 1 && startLine !== endLine) {
			endLine = endLine - 1;
		}

		const tabSize = this._opts.tabSize;
		const oneIndent = this._opts.oneIndent;
		const shouldIndentEmptyLines = (startLine === endLine);

		// if indenting or outdenting on a whitespace only line
		if (this._selection.isEmpty()) {
			if (/^\s*$/.test(model.getLineContent(startLine))) {
				this._useLastEditRangeForCursorEndPosition = true;
			}
		}

		if (this._opts.useTabStops) {
			// indents[i] represents i * oneIndent
			let indents: string[] = ['', oneIndent];

			// keep track of previous line's "miss-alignment"
			let previousLineExtraSpaces = 0, extraSpaces = 0;
			for (let lineNumber = startLine; lineNumber <= endLine; lineNumber++ , previousLineExtraSpaces = extraSpaces) {
				extraSpaces = 0;
				let lineText = model.getLineContent(lineNumber);
				let indentationEndIndex = strings.firstNonWhitespaceIndex(lineText);

				if (this._opts.isUnshift && (lineText.length === 0 || indentationEndIndex === 0)) {
					// empty line or line with no leading whitespace => nothing to do
					continue;
				}

				if (!shouldIndentEmptyLines && !this._opts.isUnshift && lineText.length === 0) {
					// do not indent empty lines => nothing to do
					continue;
				}

				if (indentationEndIndex === -1) {
					// the entire line is whitespace
					indentationEndIndex = lineText.length;
				}

				if (lineNumber > 1) {
					let contentStartVisibleColumn = CursorColumns.visibleColumnFromColumn(lineText, indentationEndIndex + 1, tabSize);
					if (contentStartVisibleColumn % tabSize !== 0) {
						// The current line is "miss-aligned", so let's see if this is expected...
						// This can only happen when it has trailing commas in the indent
						if (model.isCheapToTokenize(lineNumber - 1)) {
							let enterAction = LanguageConfigurationRegistry.getRawEnterActionAtPosition(model, lineNumber - 1, model.getLineMaxColumn(lineNumber - 1));
							if (enterAction) {
								extraSpaces = previousLineExtraSpaces;
								if (enterAction.appendText) {
									for (let j = 0, lenJ = enterAction.appendText.length; j < lenJ && extraSpaces < tabSize; j++) {
										if (enterAction.appendText.charCodeAt(j) === CharCode.Space) {
											extraSpaces++;
										} else {
											break;
										}
									}
								}
								if (enterAction.removeText) {
									extraSpaces = Math.max(0, extraSpaces - enterAction.removeText);
								}

								// Act as if `prefixSpaces` is not part of the indentation
								for (let j = 0; j < extraSpaces; j++) {
									if (indentationEndIndex === 0 || lineText.charCodeAt(indentationEndIndex - 1) !== CharCode.Space) {
										break;
									}
									indentationEndIndex--;
								}
							}
						}
					}
				}


				if (this._opts.isUnshift && indentationEndIndex === 0) {
					// line with no leading whitespace => nothing to do
					continue;
				}

				let desiredIndentCount: number;
				if (this._opts.isUnshift) {
					desiredIndentCount = ShiftCommand.unshiftIndentCount(lineText, indentationEndIndex + 1, tabSize);
				} else {
					desiredIndentCount = ShiftCommand.shiftIndentCount(lineText, indentationEndIndex + 1, tabSize);
				}

				// Fill `indents`, as needed
				for (let j = indents.length; j <= desiredIndentCount; j++) {
					indents[j] = indents[j - 1] + oneIndent;
				}

				this._addEditOperation(builder, new Range(lineNumber, 1, lineNumber, indentationEndIndex + 1), indents[desiredIndentCount]);
				if (lineNumber === startLine) {
					// Force the startColumn to stay put because we're inserting after it
//.........這裏部分代碼省略.........

		function testVisibleColumnFromColumn(text: string, tabSize: number, column: number, expected: number): void {
			assert.equal(CursorColumns.visibleColumnFromColumn(text, column, tabSize), expected);
		}