Introduction to the Context Menu API

Design

Interface

package org.lorainelab.igb.context.menu;
import java.util.Optional;
import org.lorainelab.igb.context.menu.model.AnnotationContextEvent;
import org.lorainelab.igb.context.menu.model.ContextMenuItem;

/**
 *
 * @author dcnorris
 */
public interface AnnotationContextMenuProvider {
    public Optional<ContextMenuItem> buildMenuItem(AnnotationContextEvent event);
    public MenuSection getMenuSection();
}

Data Model

AnnotationContextEvent

package org.lorainelab.igb.context.menu.model;
import com.affymetrix.genometry.symmetry.impl.SeqSymmetry;
import java.util.List;
/**
 *
 * @author dcnorris
 */
public class AnnotationContextEvent {
    private final List<SeqSymmetry> selectedItems;
    public AnnotationContextEvent(List<SeqSymmetry> selectedItems) {
        this.selectedItems = selectedItems;
    }
    public List<SeqSymmetry> getSelectedItems() {
        return selectedItems;
    }
}

ContextMenuItem

package org.lorainelab.igb.context.menu.model;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableSet;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
/**
 *
 * @author dcnorris
 */
public class ContextMenuItem {
    private final String menuLabel;
    private MenuIcon menuIcon;
    private Function<Void, Void> action;
    private Set<ContextMenuItem> subMenuItems;
    private int weight = 0;
    public ContextMenuItem(String menuLabel, Set<ContextMenuItem> subMenuItems) {
        checkNotNull(menuLabel);
        checkNotNull(subMenuItems);
        checkState(!Strings.isNullOrEmpty(menuLabel));
        checkState(!subMenuItems.isEmpty());
        this.menuLabel = menuLabel;
        this.subMenuItems = ImmutableSet.copyOf(subMenuItems);
    }
    public ContextMenuItem(String menuLabel, Function<Void, Void> action) {
        checkNotNull(menuLabel);
        checkState(!Strings.isNullOrEmpty(menuLabel));
        checkNotNull(action);
        this.menuLabel = menuLabel;
        this.action = action;
        subMenuItems = ImmutableSet.of();
    }
    public String getMenuLabel() {
        return menuLabel;
    }
    public Function<Void, Void> getAction() {
        return action;
    }
    public Set<ContextMenuItem> getSubMenuItems() {
        return subMenuItems;
    }
    public void setWeight(int weight) {
        this.weight = weight;
    }
    public void setMenuIcon(MenuIcon menuIcon) {
        this.menuIcon = menuIcon;
    }
    public Optional<MenuIcon> getMenuIcon() {
        return Optional.ofNullable(menuIcon);
    }
}

MenuIcon

package org.lorainelab.igb.context.menu.model;
import com.google.common.io.BaseEncoding;
import java.io.InputStream;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
 *
 * @author dcnorris
 */
public class MenuIcon {
    private String encodedImage;
    private static final Logger logger = LoggerFactory.getLogger(MenuIcon.class);
    public MenuIcon(InputStream resourceAsStream) {
        try {
            encodedImage = BaseEncoding.base64().encode(IOUtils.toByteArray(resourceAsStream));
        } catch (Exception ex) {
            logger.error(ex.getMessage(), ex);
        }
    }
    public byte[] getEncodedImage() {
        return BaseEncoding.base64().decode(encodedImage);
    }
}