final id = /** ID of my view **/
IPartListener2 listener = new IPartListener2() {

	@Override
	public void partActivated(IWorkbenchPartReference partRef) {
	}

	@Override
	public void partBroughtToTop(IWorkbenchPartReference partRef) {
	}

	@Override
	public void partClosed(IWorkbenchPartReference partRef) {
	}

	@Override
	public void partDeactivated(final IWorkbenchPartReference partRef) {
		if (!id.equals(partRef.getId()))
			return;
		if (!(partRef.getPart(false) instanceof IViewPart))
		    return;
		final IViewPart vp = (IViewPart)partRef.getPart(false);
		Display.getDefault().asyncExec(new Runnable() {
			@Override
			public void run() {
				try {
					Thread.sleep(200);
				} catch (InterruptedException e) {
				}
				if (vp.getSite()!=null && vp.getSite().getPage()!=null) {
					if (vp.getSite().getPage().findViewReference(partRef.getId())==null)
						/******  MY VIEW REALLY GOT CLOSED! ******/;
				}
			}
		});
	}

	@Override
	public void partOpened(IWorkbenchPartReference partRef) {
	}

	@Override
	public void partHidden(IWorkbenchPartReference partRef) {
	}

	@Override
	public void partVisible(IWorkbenchPartReference partRef) {
	}

	@Override
	public void partInputChanged(IWorkbenchPartReference partRef) {
	}

};
page.addPartListener(listener);