package org.docear.plugin.core.ui;
import java.awt.Component;
import java.awt.event.ContainerEvent;
public interface IViewportOverlay {
public enum VIEW_CHANGE {
ADD, REMOVE
};
public void setParent(OverlayViewport parent);
public Component getComponent();
public boolean isVisible();
public void viewChanged(VIEW_CHANGE type, ContainerEvent event);
public String[] getPositionConstraints();
}