TypeScript ITextModel.getValueInRange方法代码示例

	resolve(variable: Variable): string {

		const { name } = variable;

		if (name === 'SELECTION' || name === 'TM_SELECTED_TEXT') {
			let value = this._model.getValueInRange(this._selection) || undefined;
			if (value && this._selection.startLineNumber !== this._selection.endLineNumber) {
				// Selection is a multiline string which we indentation we now
				// need to adjust. We compare the indentation of this variable
				// with the indentation at the editor position and add potential
				// extra indentation to the value

				const line = this._model.getLineContent(this._selection.startLineNumber);
				const lineLeadingWhitespace = getLeadingWhitespace(line, 0, this._selection.startColumn - 1);

				let varLeadingWhitespace = lineLeadingWhitespace;
				variable.snippet.walk(marker => {
					if (marker === variable) {
						return false;
					}
					if (marker instanceof Text) {
						varLeadingWhitespace = getLeadingWhitespace(marker.value.split(/\r\n|\r|\n/).pop());
					}
					return true;
				});
				const whitespaceCommonLength = commonPrefixLength(varLeadingWhitespace, lineLeadingWhitespace);

				value = value.replace(
					/(\r\n|\r|\n)(.*)/g,
					(m, newline, rest) => `${newline}${varLeadingWhitespace.substr(whitespaceCommonLength)}${rest}`
				);
			}
			return value;

		} else if (name === 'TM_CURRENT_LINE') {
			return this._model.getLineContent(this._selection.positionLineNumber);

		} else if (name === 'TM_CURRENT_WORD') {
			const info = this._model.getWordAtPosition({
				lineNumber: this._selection.positionLineNumber,
				column: this._selection.positionColumn
			});
			return info && info.word || undefined;

		} else if (name === 'TM_LINE_INDEX') {
			return String(this._selection.positionLineNumber - 1);

		} else if (name === 'TM_LINE_NUMBER') {
			return String(this._selection.positionLineNumber);
		}
		return undefined;
	}

	private static _isSurroundSelectionType(config: CursorConfiguration, model: ITextModel, selections: Selection[], ch: string): boolean {
		if (!TypeOperations._shouldSurroundChar(config, ch) || !config.surroundingPairs.hasOwnProperty(ch)) {
			return false;
		}

		const isTypingAQuoteCharacter = isQuote(ch);

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

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

			let selectionContainsOnlyWhitespace = true;

			for (let lineNumber = selection.startLineNumber; lineNumber <= selection.endLineNumber; lineNumber++) {
				const lineText = model.getLineContent(lineNumber);
				const startIndex = (lineNumber === selection.startLineNumber ? selection.startColumn - 1 : 0);
				const endIndex = (lineNumber === selection.endLineNumber ? selection.endColumn - 1 : lineText.length);
				const selectedText = lineText.substring(startIndex, endIndex);
				if (/[^ \t]/.test(selectedText)) {
					// this selected text contains something other than whitespace
					selectionContainsOnlyWhitespace = false;
					break;
				}
			}

			if (selectionContainsOnlyWhitespace) {
				return false;
			}

			if (isTypingAQuoteCharacter && selection.startLineNumber === selection.endLineNumber && selection.startColumn + 1 === selection.endColumn) {
				const selectionText = model.getValueInRange(selection);
				if (isQuote(selectionText)) {
					// Typing a quote character on top of another quote character
					// => disable surround selection type
					return false;
				}
			}
		}

		return true;
	}

	static _trimEdit(editRange: Range, editText: string, editForceMoveMarkers: boolean, model: ITextModel): ISingleEditOperation {

		let currentText = model.getValueInRange(editRange);

		// Find the equal characters in the front
		let commonPrefixLength = strings.commonPrefixLength(editText, currentText);

		// If the two strings are identical, return no edit (no-op)
		if (commonPrefixLength === currentText.length && commonPrefixLength === editText.length) {
			return null;
		}

		if (commonPrefixLength > 0) {
			// Apply front trimming
			let newStartPosition = model.modifyPosition(editRange.getStartPosition(), commonPrefixLength);
			editRange = new Range(newStartPosition.lineNumber, newStartPosition.column, editRange.endLineNumber, editRange.endColumn);
			editText = editText.substring(commonPrefixLength);
			currentText = currentText.substr(commonPrefixLength);
		}

		// Find the equal characters in the rear
		let commonSuffixLength = strings.commonSuffixLength(editText, currentText);

		if (commonSuffixLength > 0) {
			// Apply rear trimming
			let newEndPosition = model.modifyPosition(editRange.getEndPosition(), -commonSuffixLength);
			editRange = new Range(editRange.startLineNumber, editRange.startColumn, newEndPosition.lineNumber, newEndPosition.column);
			editText = editText.substring(0, editText.length - commonSuffixLength);
			currentText = currentText.substring(0, currentText.length - commonSuffixLength);
		}

		return {
			text: editText,
			range: editRange,
			forceMoveMarkers: editForceMoveMarkers
		};
	}

	public getEditOperations(model: ITextModel, builder: editorCommon.IEditOperationBuilder): void {
		let text = model.getValueInRange(this.selection);
		if (!this.copy) {
			builder.addEditOperation(this.selection, null);
		}
		builder.addEditOperation(new Range(this.targetPosition.lineNumber, this.targetPosition.column, this.targetPosition.lineNumber, this.targetPosition.column), text);

		if (this.selection.containsPosition(this.targetPosition) && !(
			this.copy && (
				this.selection.getEndPosition().equals(this.targetPosition) || this.selection.getStartPosition().equals(this.targetPosition)
			) // we allow users to paste content beside the selection
		)) {
			this.targetSelection = this.selection;
			return;
		}

		if (this.copy) {
			this.targetSelection = new Selection(
				this.targetPosition.lineNumber,
				this.targetPosition.column,
				this.selection.endLineNumber - this.selection.startLineNumber + this.targetPosition.lineNumber,
				this.selection.startLineNumber === this.selection.endLineNumber ?
					this.targetPosition.column + this.selection.endColumn - this.selection.startColumn :
					this.selection.endColumn
			);
			return;
		}

		if (this.targetPosition.lineNumber > this.selection.endLineNumber) {
			// Drag the selection downwards
			this.targetSelection = new Selection(
				this.targetPosition.lineNumber - this.selection.endLineNumber + this.selection.startLineNumber,
				this.targetPosition.column,
				this.targetPosition.lineNumber,
				this.selection.startLineNumber === this.selection.endLineNumber ?
					this.targetPosition.column + this.selection.endColumn - this.selection.startColumn :
					this.selection.endColumn
			);
			return;
		}

		if (this.targetPosition.lineNumber < this.selection.endLineNumber) {
			// Drag the selection upwards
			this.targetSelection = new Selection(
				this.targetPosition.lineNumber,
				this.targetPosition.column,
				this.targetPosition.lineNumber + this.selection.endLineNumber - this.selection.startLineNumber,
				this.selection.startLineNumber === this.selection.endLineNumber ?
					this.targetPosition.column + this.selection.endColumn - this.selection.startColumn :
					this.selection.endColumn
			);
			return;
		}

		// The target position is at the same line as the selection's end position.
		if (this.selection.endColumn <= this.targetPosition.column) {
			// The target position is after the selection's end position
			this.targetSelection = new Selection(
				this.targetPosition.lineNumber - this.selection.endLineNumber + this.selection.startLineNumber,
				this.selection.startLineNumber === this.selection.endLineNumber ?
					this.targetPosition.column - this.selection.endColumn + this.selection.startColumn :
					this.targetPosition.column - this.selection.endColumn + this.selection.startColumn,
				this.targetPosition.lineNumber,
				this.selection.startLineNumber === this.selection.endLineNumber ?
					this.targetPosition.column :
					this.selection.endColumn
			);
		} else {
			// The target position is before the selection's end postion. Since the selection doesn't contain the target position, the selection is one-line and target position is before this selection.
			this.targetSelection = new Selection(
				this.targetPosition.lineNumber - this.selection.endLineNumber + this.selection.startLineNumber,
				this.targetPosition.column,
				this.targetPosition.lineNumber,
				this.targetPosition.column + this.selection.endColumn - this.selection.startColumn
			);
		}
	}