Steps to Reproduce

1. run the attached zul
2. click 5 legends to hide 5 series manually
3. click "show all" button to show all series

Current Result

it takes a long time to show all series

Expected Result

the time can be reduced

Debug Information

• since the server call show() for all series, so it causes client-side to redraw each series one by one. Please see the profile.

Workaround

There are 2 workarounds:
1. charts.invalidate();
2. listen to onPlotHide and set visible false

	@Listen("onPlotHide = #charts")
	public void hide(ChartsEvent e){
		e.getSeries().setVisible(false);
	}

only call show() to those invisible series

				if (!charts.getSeries(i).isVisible()){ //workaround 2
					charts.getSeries(i).show();
				};