TypeScript ICoordinatesConverter.validateViewPosition方法代碼示例

	public setSelection(selection: editorCommon.ISelection, viewSelection: editorCommon.ISelection = null): void {
		let position = this.model.validatePosition({
			lineNumber: selection.positionLineNumber,
			column: selection.positionColumn
		});
		let selectionStart = this.model.validatePosition({
			lineNumber: selection.selectionStartLineNumber,
			column: selection.selectionStartColumn
		});

		let viewPosition: Position;
		let viewSelectionStart: Position;

		if (viewSelection) {
			viewPosition = this.coordinatesConverter.validateViewPosition(new Position(viewSelection.positionLineNumber, viewSelection.positionColumn), position);
			viewSelectionStart = this.coordinatesConverter.validateViewPosition(new Position(viewSelection.selectionStartLineNumber, viewSelection.selectionStartColumn), selectionStart);
		} else {
			viewPosition = this.coordinatesConverter.convertModelPositionToViewPosition(position);
			viewSelectionStart = this.coordinatesConverter.convertModelPositionToViewPosition(selectionStart);
		}

		this._setState(
			new SingleCursorState(new Range(selectionStart.lineNumber, selectionStart.column, selectionStart.lineNumber, selectionStart.column), 0, position, 0),
			new SingleCursorState(new Range(viewSelectionStart.lineNumber, viewSelectionStart.column, viewSelectionStart.lineNumber, viewSelectionStart.column), 0, viewPosition, 0),
			false
		);
	}

	private _setState(modelState: SingleCursorState, viewState: SingleCursorState, ensureInEditableRange: boolean): void {
		// Validate new model state
		let selectionStart = this.model.validateRange(modelState.selectionStart);
		let selectionStartLeftoverVisibleColumns = modelState.selectionStart.equalsRange(selectionStart) ? modelState.selectionStartLeftoverVisibleColumns : 0;

		let position = this.model.validatePosition(modelState.position);
		if (ensureInEditableRange) {
			position = this._ensureInEditableRange(position);
		}
		let leftoverVisibleColumns = modelState.position.equals(position) ? modelState.leftoverVisibleColumns : 0;

		modelState = new SingleCursorState(selectionStart, selectionStartLeftoverVisibleColumns, position, leftoverVisibleColumns);

		// Validate new view state
		let viewSelectionStart = this.coordinatesConverter.validateViewRange(viewState.selectionStart, modelState.selectionStart);
		let viewPosition = this.coordinatesConverter.validateViewPosition(viewState.position, modelState.position);
		viewState = new SingleCursorState(viewSelectionStart, selectionStartLeftoverVisibleColumns, viewPosition, leftoverVisibleColumns);

		if (this.modelState && this.viewState && this.modelState.equals(modelState) && this.viewState.equals(viewState)) {
			// No-op, early return
			return;
		}

		this.modelState = modelState;
		this.viewState = viewState;

		this._selStartMarker = this._ensureMarker(this._selStartMarker, this.modelState.selection.startLineNumber, this.modelState.selection.startColumn, true);
		this._selEndMarker = this._ensureMarker(this._selEndMarker, this.modelState.selection.endLineNumber, this.modelState.selection.endColumn, false);
	}

	public restoreState(state: IOneCursorState): void {
		let position = this.model.validatePosition(state.position);
		let selectionStart: Range;
		if (state.selectionStart) {
			selectionStart = this.model.validateRange(state.selectionStart);
		} else {
			selectionStart = new Range(position.lineNumber, position.column, position.lineNumber, position.column);
		}

		let viewPosition = this.coordinatesConverter.validateViewPosition(new Position(state.viewPosition.lineNumber, state.viewPosition.column), position);
		let viewSelectionStart: Range;
		if (state.viewSelectionStart) {
			viewSelectionStart = this.coordinatesConverter.validateViewRange(new Range(state.viewSelectionStart.startLineNumber, state.viewSelectionStart.startColumn, state.viewSelectionStart.endLineNumber, state.viewSelectionStart.endColumn), selectionStart);
		} else {
			viewSelectionStart = this.coordinatesConverter.convertModelRangeToViewRange(selectionStart);
		}

		this._setState(
			new SingleCursorState(selectionStart, state.selectionStartLeftoverVisibleColumns, position, state.leftoverVisibleColumns),
			new SingleCursorState(viewSelectionStart, state.selectionStartLeftoverVisibleColumns, viewPosition, state.leftoverVisibleColumns),
			false
		);
	}

	public validateViewPosition(viewPosition: Position, modelPosition: Position): Position {
		return this._coordinatesConverter.validateViewPosition(viewPosition, modelPosition);
	}

	public validateViewPosition(viewLineNumber: number, viewColumn: number, modelPosition: Position): Position {
		return this.coordinatesConverter.validateViewPosition(new Position(viewLineNumber, viewColumn), modelPosition);
	}