TypeScript viewModel.ICoordinatesConverter類代碼示例

	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 setSelectionStart(range: Range): void {
		this._setState(
			this.modelState.withSelectionStart(range),
			this.viewState.withSelectionStart(this.coordinatesConverter.convertModelRangeToViewRange(range)),
			false
		);
	}

	private _getDecorationsViewportData(viewportRange: Range): IDecorationsViewportData {
		let viewportModelRange = this._coordinatesConverter.convertViewRangeToModelRange(viewportRange);
		let startLineNumber = viewportRange.startLineNumber;
		let endLineNumber = viewportRange.endLineNumber;
		let modelDecorations = this.model.getDecorationsInRange(viewportModelRange, this.editorId, this.configuration.editor.readOnly);

		let decorationsInViewport: ViewModelDecoration[] = [], decorationsInViewportLen = 0;
		let inlineDecorations: InlineDecoration[][] = [];
		for (let j = startLineNumber; j <= endLineNumber; j++) {
			inlineDecorations[j - startLineNumber] = [];
		}

		for (let i = 0, len = modelDecorations.length; i < len; i++) {
			let modelDecoration = modelDecorations[i];
			let decorationOptions = modelDecoration.options;

			let viewModelDecoration = this._getOrCreateViewModelDecoration(modelDecoration);
			let viewRange = viewModelDecoration.range;

			decorationsInViewport[decorationsInViewportLen++] = viewModelDecoration;

			if (decorationOptions.inlineClassName) {
				let inlineDecoration = new InlineDecoration(viewRange, decorationOptions.inlineClassName, false);
				let intersectedStartLineNumber = Math.max(startLineNumber, viewRange.startLineNumber);
				let intersectedEndLineNumber = Math.min(endLineNumber, viewRange.endLineNumber);
				for (let j = intersectedStartLineNumber; j <= intersectedEndLineNumber; j++) {
					inlineDecorations[j - startLineNumber].push(inlineDecoration);
				}
			}
			if (decorationOptions.beforeContentClassName) {
				if (startLineNumber <= viewRange.startLineNumber && viewRange.startLineNumber <= endLineNumber) {
					// TODO: What happens if the startLineNumber and startColumn is at the end of a line?
					let inlineDecoration = new InlineDecoration(
						new Range(viewRange.startLineNumber, viewRange.startColumn, viewRange.startLineNumber, viewRange.startColumn + 1),
						decorationOptions.beforeContentClassName,
						true
					);
					inlineDecorations[viewRange.startLineNumber - startLineNumber].push(inlineDecoration);
				}
			}
			if (decorationOptions.afterContentClassName) {
				if (startLineNumber <= viewRange.endLineNumber && viewRange.endLineNumber <= endLineNumber && viewRange.endColumn > 1) {
					let inlineDecoration = new InlineDecoration(
						new Range(viewRange.endLineNumber, viewRange.endColumn - 1, viewRange.endLineNumber, viewRange.endColumn),
						decorationOptions.afterContentClassName,
						true
					);
					inlineDecorations[viewRange.endLineNumber - startLineNumber].push(inlineDecoration);
				}
			}
		}

		return {
			decorations: decorationsInViewport,
			inlineDecorations: inlineDecorations
		};
	}

	private _getOrCreateViewModelDecoration(modelDecoration: editorCommon.IModelDecoration): ViewModelDecoration {
		let id = modelDecoration.id;
		let r = this._decorationsCache[id];
		if (!r) {
			r = new ViewModelDecoration(modelDecoration);
			this._decorationsCache[id] = r;
		}
		if (r.range === null) {
			const modelRange = modelDecoration.range;
			if (modelDecoration.options.isWholeLine) {
				let start = this._coordinatesConverter.convertModelPositionToViewPosition(new Position(modelRange.startLineNumber, 1));
				let end = this._coordinatesConverter.convertModelPositionToViewPosition(new Position(modelRange.endLineNumber, this.model.getLineMaxColumn(modelRange.endLineNumber)));
				r.range = new Range(start.lineNumber, start.column, end.lineNumber, end.column);
			} else {
				r.range = this._coordinatesConverter.convertModelRangeToViewRange(modelRange);
			}
		}
		return r;
	}

	private _getOrCreateViewModelDecoration(modelDecoration: IModelDecoration): ViewModelDecoration {
		const id = modelDecoration.id;
		let r = this._decorationsCache[id];
		if (!r) {
			const modelRange = modelDecoration.range;
			const options = modelDecoration.options;
			let viewRange: Range;
			if (options.isWholeLine) {
				const start = this._coordinatesConverter.convertModelPositionToViewPosition(new Position(modelRange.startLineNumber, 1));
				const end = this._coordinatesConverter.convertModelPositionToViewPosition(new Position(modelRange.endLineNumber, this.model.getLineMaxColumn(modelRange.endLineNumber)));
				viewRange = new Range(start.lineNumber, start.column, end.lineNumber, end.column);
			} else {
				viewRange = this._coordinatesConverter.convertModelRangeToViewRange(modelRange);
			}
			r = new ViewModelDecoration(viewRange, options);
			this._decorationsCache[id] = r;
		}
		return r;
	}

	public endRecoverSelectionFromMarkers(ctx: IOneCursorOperationContext, recoveredSelection: Selection): boolean {
		ctx.cursorPositionChangeReason = editorCommon.CursorChangeReason.RecoverFromMarkers;
		ctx.shouldPushStackElementBefore = true;
		ctx.shouldPushStackElementAfter = true;
		ctx.shouldReveal = false;
		ctx.shouldRevealHorizontal = false;

		let selectionStart = new Range(recoveredSelection.selectionStartLineNumber, recoveredSelection.selectionStartColumn, recoveredSelection.selectionStartLineNumber, recoveredSelection.selectionStartColumn);
		let position = new Position(recoveredSelection.positionLineNumber, recoveredSelection.positionColumn);

		let viewSelectionStart = this.coordinatesConverter.convertModelRangeToViewRange(selectionStart);
		let viewPosition = this.coordinatesConverter.convertViewPositionToModelPosition(position);

		this._setState(
			new SingleCursorState(selectionStart, 0, position, 0),
			new SingleCursorState(viewSelectionStart, 0, viewPosition, 0),
			false
		);

		return true;
	}

	public onCursorRevealRange(eventsCollector: ViewEventsCollector, e: ICursorRevealRangeEvent): void {
		// Ensure event has viewRange
		const viewRange = (
			e.viewRange
				? e.viewRange
				: this.coordinatesConverter.convertModelRangeToViewRange(e.range)
		);
		eventsCollector.emit(new viewEvents.ViewRevealRangeRequestEvent(
			viewRange,
			e.verticalType,
			e.revealHorizontal
		));
	}

	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 convertViewPositionToModelPosition(lineNumber: number, column: number): Position {
		return this._coordinatesConverter.convertViewPositionToModelPosition(new Position(lineNumber, column));
	}