BloodMagic/BM_src/thaumcraft/api/IGoggles.java

package thaumcraft.api;

import net.minecraft.entity.EntityLivingBase;
import net.minecraft.item.ItemStack;

/**
 * @author Azanor
 *         <p/>
 *         Equipped head slot items that extend this class will be able to perform most functions that
 *         goggles of revealing can apart from view nodes which is handled by IRevealer.
 */

public interface IGoggles {
    /*
     * If this method returns true things like block essentia contents will be shown.
     */
    public boolean showIngamePopups(ItemStack itemstack, EntityLivingBase player);
}