src/vs/base/parts/quickinput/browser/quickInput.ts/QuickInput/show
class QuickInput:	show(): void {
		if (this.visible) {
			return;
		}
		this.visibleDisposables.add(
			this.ui.onDidTriggerButton(button => {
				if (this.buttons.indexOf(button) !== -1) {
					this.onDidTriggerButtonEmitter.fire(button);
				}
			}),
		);
		this.ui.show(this);
		this.visible = true;
		this.update();
	}