GWT Close Popup Panels properly?

Question

I want close a Popup Panel clicking an anchor, but this anchor could be inside several panels, then go through parents is not a good idea.

How can I get the Popup Panel where the anchor is?

Answer 1

What about just passing a variable with the PopupPanel into the other panels?

public class PanelWithPopup extends Composite
{
    FlowPanel thisPanel = new FlowPanel();
    PopupPanel popup = new PopupPanel();
    SomeOtherPanel otherPanel;

    public PanelWithPopup()
    {
        // pass the popup panel to the SomeOtherPanel
        otherPanel = new SomeOtherPanel(popup);

        thisPanel.add(otherPanel);
        initWidget(thisPanel);
    }
}

public class SomeOtherPanel
{
    PopupPanel popup;

    public SomeOtherPanel(PopupPanel p)
    {
        this.popup = p;
    }

    void hidePopup()
    {
        popup.hide();
    }
}

Or, if the other panels were defined inside the main panel (i.e. if the SomeOtherPanel was defined within the PanelWithPopup), you could access the PopupPanel popup directly.