diff --git a/src/main/java/ai/nets/samj/ij/ui/Consumer.java b/src/main/java/ai/nets/samj/ij/ui/Consumer.java
new file mode 100644
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+++ b/src/main/java/ai/nets/samj/ij/ui/Consumer.java
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+package ai.nets.samj.ij.ui;
+
+import java.awt.Polygon;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Stack;
+import java.util.stream.Collectors;
+
+import javax.swing.SwingUtilities;
+
+import ai.nets.samj.annotation.Mask;
+import ai.nets.samj.gui.components.ComboBoxItem;
+import ai.nets.samj.ui.ConsumerInterface;
+import ij.IJ;
+import ij.ImagePlus;
+import ij.Prefs;
+import ij.gui.ImageCanvas;
+import ij.gui.ImageWindow;
+import ij.gui.PolygonRoi;
+import ij.gui.Roi;
+import ij.plugin.frame.RoiManager;
+import net.imglib2.Localizable;
+import net.imglib2.RandomAccessibleInterval;
+import net.imglib2.img.display.imagej.ImageJFunctions;
+import net.imglib2.type.numeric.integer.UnsignedShortType;
+
+public class Consumer extends ConsumerInterface {
+	/**
+	 * The image being processed
+	 */
+	private final ImagePlus activeImage;
+	/**
+	 * Canvas of the image selected. Used to record the prompts drawn by the user
+	 */
+	private final ImageCanvas activeCanvas;
+	/**
+	 * Window of the selected image. Used to record the prompts drawn by the user
+	 */
+	private final ImageWindow activeWindow;
+	/**
+	 * Instance of the ROI manager to save the ROIs created
+	 */
+	private final RoiManager roiManager;
+	/**
+	 * Whether to add the ROIs created to the ROI manager or not
+	 */
+	private boolean isAddingToRoiManager = true;
+	/**
+	 * A list to save several ROIs that are being created for the same prompt.
+	 * Whenever the prompt is sent to the model, this list is emptied
+	 */
+	private List<Roi> temporalROIs = new ArrayList<Roi>();
+	/**
+	 * A list to save several ROIs that are being created from the same prompt.
+	 * This list saves only the "negative" ROIs, those that are not part of the instance of interest,
+	 * but part of the background.
+	 * Whenever the prompt is sent to the model, this list is emptied. 
+	 */
+	private List<Roi> temporalNegROIs = new ArrayList<Roi>();
+	/**
+	 * For the point prompts, whether if hte user is collecting several prompts (pressing the ctrl key)
+	 * or just one
+	 */
+	private boolean isCollectingPoints = false;
+	/**
+	 * All the points being collected that reference the instance of interest
+	 */
+	private List<Localizable> collectedPoints = new ArrayList<Localizable>();
+	/**
+	 * All the points being collected that reference the background (ctrl + alt)
+	 */
+	private List<Localizable> collecteNegPoints = new ArrayList<Localizable>();
+	/**
+	 * Save lists of rois that have been added at the same time to delete them if necessary
+	 */
+    private Stack<List<PolygonRoi>> undoStack = new Stack<>();
+    /**
+     * Save lists of polygons deleted at the same time to undo their deleting
+     */
+    private Stack<List<PolygonRoi>> redoStack = new Stack<>();
+    /**
+     * List of the annotated masks on an image
+     */
+    private Stack<List<Mask>> annotatedMask = new Stack<List<Mask>>();
+    /**
+     * List that keeps track of the annotated masks
+     */
+    private Stack<List<Mask>> redoAnnotatedMask = new Stack<List<Mask>>();
+    /**
+     * Tracks if Ctrl+Z has already been handled
+     */
+    private boolean undoPressed = false;
+    /**
+     * Tracks if Ctrl+Y has already been handled
+     */
+    private boolean redoPressed = false;
+    /**
+     * Whether the SAMJ specific listeners are registered or not.
+     */
+    private boolean registered = false;
+
+	@Override
+	public List<ComboBoxItem> getListOfOpenImages() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public List<Polygon> getPolygonsFromRoiManager() {
+		return Arrays.stream(roiManager.getRoisAsArray()).map(i -> i.getPolygon()).collect(Collectors.toList());
+	}
+
+	@Override
+	public void enableAddingToRoiManager(boolean shouldBeAdding) {
+		this.isAddingToRoiManager = shouldBeAdding;
+	}
+
+	@Override
+	public void exportImageLabeling() {
+		int width = activeImage.getWidth();
+		int height = activeImage.getHeight();
+		List<Mask> masks = new ArrayList<Mask>();
+		this.annotatedMask.stream().forEach(mm -> masks.addAll(mm));
+		RandomAccessibleInterval<UnsignedShortType> raiMask = Mask.getMask(width, height, masks);
+		ImagePlus impMask = ImageJFunctions.show(raiMask);
+		impMask.setTitle(activeImage.getTitle() + "-labeling");
+		impMask.getProcessor().setMinAndMax(0, annotatedMask.size());
+	}
+
+	@Override
+	public void activateListeners() {
+		if (registered) return;
+		SwingUtilities.invokeLater(() -> {
+			IJ.addEventListener(this);
+			activeCanvas.removeKeyListener(IJ.getInstance());
+			activeWindow.removeKeyListener(IJ.getInstance());
+			activeCanvas.addMouseListener(this);
+			activeCanvas.addKeyListener(this);
+			activeWindow.addWindowListener(this);
+			activeWindow.addKeyListener(this);
+		});
+		registered = true;
+	}
+
+	@Override
+	public void deactivateListeners() {
+		if (!registered) return;
+		SwingUtilities.invokeLater(() -> {
+			IJ.removeEventListener(this);
+			activeCanvas.removeMouseListener(this);
+			activeCanvas.removeKeyListener(this);
+			activeWindow.removeWindowListener(this);
+			activeWindow.removeKeyListener(this);
+			
+			activeWindow.addKeyListener(IJ.getInstance());
+			activeCanvas.addKeyListener(IJ.getInstance());
+		});
+		registered = false;
+	}
+
+	@Override
+	public void setFocusedImage(Object image) {
+		activeImage = (ImagePlus) image;
+	}
+
+	private RoiManager startRoiManager() {
+		RoiManager roiManager = RoiManager.getInstance();
+		if (roiManager == null) {
+			roiManager = new RoiManager();
+		}
+		roiManager.reset();
+		roiManager.setVisible(true);
+		roiManager.setTitle("SAM Roi Manager");
+		Prefs.useNamesAsLabels = true;
+		roiManager.setEditMode(activeImage, true);
+		return roiManager;
+	}
+
+}