function insertMessage(target: HTMLElement, msg: string): void {
	if (!ariaContainer) {
		// console.warn('ARIA support needs a container. Call setARIAContainer() first.');
		return;
	}
	if (target.textContent === msg) {
		msg = nls.localize('repeated', "{0} (occurred again)", msg);
	}

	dom.clearNode(target);
	target.textContent = msg;


	// See https://www.paciellogroup.com/blog/2012/06/html5-accessibility-chops-aria-rolealert-browser-support/
	target.style.visibility = 'hidden';
	target.style.visibility = 'visible';
}

	private render() {
		dom.clearNode(this.domNode);

		if (this.keybinding) {
			let [firstPart, chordPart] = this.keybinding.getParts();
			if (firstPart) {
				this.renderPart(this.domNode, firstPart, this.matches ? this.matches.firstPart : null);
			}
			if (chordPart) {
				dom.append(this.domNode, $('span', null, ' '));
				this.renderPart(this.domNode, chordPart, this.matches ? this.matches.chordPart : null);
			}
			this.domNode.title = this.keybinding.getAriaLabel();
		}

		this.didEverRender = true;
	}

	private render() {
		dom.clearNode(this.domNode);

		if (this.keybinding) {
			let [firstPart, chordPart] = this.keybinding.getParts();
			if (firstPart) {
				this.renderPart(this.domNode, firstPart, this.matches ? this.matches.firstPart : null);
			}
			if (chordPart) {
				dom.append(this.domNode, $('span.monaco-keybinding-key-chord-separator', undefined, ' '));
				this.renderPart(this.domNode, chordPart, this.matches ? this.matches.chordPart : null);
			}
			this.domNode.title = this.keybinding.getAriaLabel() || '';
		}

		this.didEverRender = true;
	}

	private render() {
		dom.clearNode(this.domNode);

		let htmlContent: string[] = [],
			highlight: IHighlight,
			pos = 0;

		for (let i = 0; i < this.highlights.length; i++) {
			highlight = this.highlights[i];
			if (highlight.end === highlight.start) {
				continue;
			}
			if (pos < highlight.start) {
				htmlContent.push('<span>');
				const substring = this.text.substring(pos, highlight.start);
				htmlContent.push(this.supportOcticons ? renderOcticons(substring) : escape(substring));
				htmlContent.push('</span>');
				pos = highlight.end;
			}
			htmlContent.push('<span class="highlight">');
			const substring = this.text.substring(highlight.start, highlight.end);
			htmlContent.push(this.supportOcticons ? renderOcticons(substring) : escape(substring));
			htmlContent.push('</span>');
			pos = highlight.end;
		}

		if (pos < this.text.length) {
			htmlContent.push('<span>');
			const substring = this.text.substring(pos);
			htmlContent.push(this.supportOcticons ? renderOcticons(substring) : escape(substring));
			htmlContent.push('</span>');
		}

		this.domNode.innerHTML = htmlContent.join('');
		this.domNode.title = this.title;
		this.didEverRender = true;
	}

		return new Promise<number>((resolve) => {
			if (!this.element || !this.buttonsContainer || !this.iconElement || !this.toolbarContainer) {
				resolve(0);
				return;
			}

			if (this.modal) {
				this._register(domEvent(this.modal, 'mousedown')(e => {
					// Used to stop focusing of modal with mouse
					EventHelper.stop(e, true);
				}));
			}

			clearNode(this.buttonsContainer);

			let focusedButton = 0;
			this.buttonGroup = new ButtonGroup(this.buttonsContainer, this.buttons.length, { title: true });
			this.buttonGroup.buttons.forEach((button, index) => {
				button.label = mnemonicButtonLabel(this.buttons[index], true);

				this._register(button.onDidClick(e => {
					EventHelper.stop(e);
					resolve(index);
				}));
			});

			this._register(domEvent(window, 'keydown', true)((e: KeyboardEvent) => {
				const evt = new StandardKeyboardEvent(e);
				if (evt.equals(KeyCode.Enter) || evt.equals(KeyCode.Space)) {
					return;
				}

				let eventHandled = false;
				if (this.buttonGroup) {
					if (evt.equals(KeyMod.Shift | KeyCode.Tab) || evt.equals(KeyCode.LeftArrow)) {
						focusedButton = focusedButton + this.buttonGroup.buttons.length - 1;
						focusedButton = focusedButton % this.buttonGroup.buttons.length;
						this.buttonGroup.buttons[focusedButton].focus();
						eventHandled = true;
					} else if (evt.equals(KeyCode.Tab) || evt.equals(KeyCode.RightArrow)) {
						focusedButton++;
						focusedButton = focusedButton % this.buttonGroup.buttons.length;
						this.buttonGroup.buttons[focusedButton].focus();
						eventHandled = true;
					}
				}

				if (eventHandled) {
					EventHelper.stop(e, true);
				} else if (this.options.keyEventProcessor) {
					this.options.keyEventProcessor(evt);
				}
			}));

			this._register(domEvent(window, 'keyup', true)((e: KeyboardEvent) => {
				EventHelper.stop(e, true);
				const evt = new StandardKeyboardEvent(e);

				if (evt.equals(KeyCode.Escape)) {
					resolve(this.options.cancelId || 0);
				}
			}));

			this._register(domEvent(this.element, 'focusout', false)((e: FocusEvent) => {
				if (!!e.relatedTarget && !!this.element) {
					if (!isAncestor(e.relatedTarget as HTMLElement, this.element)) {
						this.focusToReturn = e.relatedTarget as HTMLElement;

						if (e.target) {
							(e.target as HTMLElement).focus();
							EventHelper.stop(e, true);
						}
					}
				}
			}));

			removeClasses(this.iconElement, 'icon-error', 'icon-warning', 'icon-info');

			switch (this.options.type) {
				case 'error':
					addClass(this.iconElement, 'icon-error');
					break;
				case 'warning':
					addClass(this.iconElement, 'icon-warning');
					break;
				case 'pending':
					addClass(this.iconElement, 'icon-pending');
					break;
				case 'none':
				case 'info':
				case 'question':
				default:
					addClass(this.iconElement, 'icon-info');
					break;
			}

			const actionBar = new ActionBar(this.toolbarContainer, {});

			const action = new Action('dialog.close', nls.localize('dialogClose', "Close Dialog"), 'dialog-close-action', true, () => {
				resolve(this.options.cancelId || 0);
//.........这里部分代码省略.........