Introduction to the Context Menu API

The goal of this quickstart is to introduce you to the the context menu api, so you will be able to add context menu extensions in your IGB Apps.

What is a context menu?

Wikipedia

"A context menu (also called contextual, shortcut, and popup or pop-up menu) is a menu in a graphical user interface (GUI) that appears upon user interaction, such as a right-click mouse operation. A context menu offers a limited set of choices that are available in the current state, or context, of the operating system or application. Usually the available choices are actions related to the selected object."

Example Context Menu on OS X 10.9

IGB Context Menu

Context Menu API Overview

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);
    }
}

MenuSection

package org.lorainelab.igb.context.menu;
/**
 *
 * @author dcnorris
 */
public enum MenuSection {
    INFORMATION, SEQUENCE, APP, UI_ACTION;
}

Context Menu Sections

Conext Menu Quickstart Code

ContextMenuExtension

package org.lorainelab.igb.context.menu.api.quickstart;
import aQute.bnd.annotation.component.Component;
import java.io.InputStream;
import java.util.Optional;
import org.lorainelab.igb.context.menu.AnnotationContextMenuProvider;
import org.lorainelab.igb.context.menu.MenuSection;
import org.lorainelab.igb.context.menu.model.AnnotationContextEvent;
import org.lorainelab.igb.context.menu.model.ContextMenuItem;
import org.lorainelab.igb.context.menu.model.MenuIcon;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
 *
 * @author dcnorris
 */
@Component(immediate = true)
public class ContextMenuExtension implements AnnotationContextMenuProvider {
    private static final Logger logger = LoggerFactory.getLogger(ContextMenuExtension.class);
    private static final String ICONPATH = "terminal.png";
    @Override
    public Optional<ContextMenuItem> buildMenuItem(AnnotationContextEvent event) {
        ContextMenuItem contextMenuItem = new ContextMenuItem("Log Selection ids", (Void t) -> {
            event.getSelectedItems().stream().map(selectedSym -> selectedSym.getID()).forEach(logger::info);
            return t;
        });
        try (InputStream resourceAsStream = ContextMenuExtension.class.getClassLoader().getResourceAsStream(ICONPATH)) {
            contextMenuItem.setMenuIcon(new MenuIcon(resourceAsStream));
        } catch (Exception ex) {
            logger.error(ex.getMessage(), ex);
        }
        return Optional.ofNullable(contextMenuItem);
    }
    @Override
    public MenuSection getMenuSection() {
        return MenuSection.INFORMATION;
    }
}

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.affymetrix</groupId>
        <artifactId>igb-project</artifactId>
        <version>9.0.0</version>
        <relativePath>../../pom.xml</relativePath>
    </parent>
    <groupId>org.lorainelab.igb</groupId>
    <artifactId>context-menu-api</artifactId>
    <packaging>bundle</packaging>
    <name>Context Menu API</name>
    
    <dependencies>
        <dependency>
            <groupId>biz.aQute.bnd</groupId>
            <artifactId>bndlib</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.affymetrix</groupId>
            <artifactId>genometry</artifactId>
            <scope>provided</scope>
        </dependency>  
        <dependency>
            <groupId>com.affymetrix</groupId>
            <artifactId>igb-services</artifactId>
            <scope>provided</scope>
        </dependency>      
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <scope>provided</scope>
        </dependency>
        <!--Start of logging dependencies-->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <scope>provided</scope>
        </dependency>
        <!--End of logging dependencies-->
        <dependency>
            <groupId>com.affymetrix</groupId>
            <artifactId>affymetrix-common</artifactId>
            <scope>provided</scope>           
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <scope>provided</scope>       
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-clean-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
            </plugin>          
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <extensions>true</extensions>
                <configuration>
                    <instructions>
                        <Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
                        <Import-Package>*</Import-Package>
                        <Export-Package>
                            ${project.groupId}.context.menu,
                            ${project.groupId}.context.menu.model
                        </Export-Package>
                        <Service-Component>*</Service-Component>
                    </instructions>
                </configuration>
            </plugin>  
        </plugins>
    </build>
</project>

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Context Menu API QuickStart