TypeScript viewLines.ViewLines類代碼示例

	private _actualRender(): void {
		if (!dom.isInDOM(this.domNode.domNode)) {
			return;
		}

		let viewPartsToRender = this._getViewPartsToRender();

		if (!this.viewLines.shouldRender() && viewPartsToRender.length === 0) {
			// Nothing to render
			return;
		}

		const partialViewportData = this._context.viewLayout.getLinesViewportData();
		this._context.model.setViewport(partialViewportData.startLineNumber, partialViewportData.endLineNumber, partialViewportData.centeredLineNumber);

		let viewportData = new ViewportData(
			this._cursor.getViewSelections(),
			partialViewportData,
			this._context.viewLayout.getWhitespaceViewportData(),
			this._context.model
		);

		if (this.contentWidgets.shouldRender()) {
			// Give the content widgets a chance to set their max width before a possible synchronous layout
			this.contentWidgets.onBeforeRender(viewportData);
		}

		if (this.viewLines.shouldRender()) {
			this.viewLines.renderText(viewportData);
			this.viewLines.onDidRender();

			// Rendering of viewLines might cause scroll events to occur, so collect view parts to render again
			viewPartsToRender = this._getViewPartsToRender();
		}

		let renderingContext = new RenderingContext(this._context.viewLayout, viewportData, this.viewLines);

		// Render the rest of the parts
		for (let i = 0, len = viewPartsToRender.length; i < len; i++) {
			let viewPart = viewPartsToRender[i];
			viewPart.prepareRender(renderingContext);
		}

		for (let i = 0, len = viewPartsToRender.length; i < len; i++) {
			let viewPart = viewPartsToRender[i];
			viewPart.render(renderingContext);
			viewPart.onDidRender();
		}
	}

	public dispose(): void {
		this._isDisposed = true;
		if (this.handleAccumulatedModelEventsTimeout !== -1) {
			clearTimeout(this.handleAccumulatedModelEventsTimeout);
			this.handleAccumulatedModelEventsTimeout = -1;
		}
		if (this._renderAnimationFrame !== null) {
			this._renderAnimationFrame.dispose();
			this._renderAnimationFrame = null;
		}
		this.accumulatedModelEvents = [];

		this.eventDispatcher.removeEventHandler(this);
		this.outgoingEvents.dispose();
		this.listenersToRemove = dispose(this.listenersToRemove);
		this.listenersToDispose = dispose(this.listenersToDispose);

		this.keyboardHandler.dispose();
		this.pointerHandler.dispose();

		this.viewLines.dispose();

		// Destroy view parts
		for (let i = 0, len = this.viewParts.length; i < len; i++) {
			this.viewParts[i].dispose();
		}
		this.viewParts = [];

		this.layoutProvider.dispose();
	}

			getLineWidth: (lineNumber: number) => {
				if (this._isDisposed) {
					throw new Error('ViewImpl.pointerHandler.getLineWidth: View is disposed');
				}
				this._flushAccumulatedAndRenderNow();
				return this.viewLines.getLineWidth(lineNumber);
			}

	public restoreState(scrollPosition: { scrollLeft: number; scrollTop: number; }): void {
		this._context.viewLayout.setScrollPositionNow({ scrollTop: scrollPosition.scrollTop });
		this._context.model.tokenizeViewport();
		this._renderNow();
		this.viewLines.updateLineWidths();
		this._context.viewLayout.setScrollPositionNow({ scrollLeft: scrollPosition.scrollLeft });
	}

			visibleRangeForPositionRelativeToEditor: (lineNumber: number, column: number) => {
				this._flushAccumulatedAndRenderNow();
				let visibleRanges = this.viewLines.visibleRangesForRange2(new Range(lineNumber, column, lineNumber, column));
				if (!visibleRanges) {
					return null;
				}
				return visibleRanges[0];
			}

	private _actualRender(): void {
		if (!dom.isInDOM(this.domNode.domNode)) {
			return;
		}

		let viewPartsToRender = this._getViewPartsToRender();

		if (!this.viewLines.shouldRender() && viewPartsToRender.length === 0) {
			// Nothing to render
			this._textAreaHandler.writeToTextArea();
			return;
		}

		let partialViewportData = this.layoutProvider.getLinesViewportData();
		this._context.model.setViewport(partialViewportData.startLineNumber, partialViewportData.endLineNumber, partialViewportData.centeredLineNumber);

		let viewportData = new ViewportData(partialViewportData, this._context.model);

		if (this.viewLines.shouldRender()) {
			this.viewLines.renderText(viewportData, () => {
				this._textAreaHandler.writeToTextArea();
			});
			this.viewLines.onDidRender();

			// Rendering of viewLines might cause scroll events to occur, so collect view parts to render again
			viewPartsToRender = this._getViewPartsToRender();
		} else {
			this._textAreaHandler.writeToTextArea();
		}

		let renderingContext = new RenderingContext(this.layoutProvider, viewportData, this.viewLines);

		// Render the rest of the parts
		for (let i = 0, len = viewPartsToRender.length; i < len; i++) {
			let viewPart = viewPartsToRender[i];
			viewPart.prepareRender(renderingContext);
		}

		for (let i = 0, len = viewPartsToRender.length; i < len; i++) {
			let viewPart = viewPartsToRender[i];
			viewPart.render(renderingContext);
			viewPart.onDidRender();
		}
	}

	public getOffsetForColumn(modelLineNumber: number, modelColumn: number): number {
		let modelPosition = this._context.model.validateModelPosition({
			lineNumber: modelLineNumber,
			column: modelColumn
		});
		let viewPosition = this._context.model.coordinatesConverter.convertModelPositionToViewPosition(modelPosition);
		this._flushAccumulatedAndRenderNow();
		let visibleRanges = this.viewLines.visibleRangesForRange2(new Range(viewPosition.lineNumber, viewPosition.column, viewPosition.lineNumber, viewPosition.column));
		if (!visibleRanges) {
			return -1;
		}
		return visibleRanges[0].left;
	}