Implement #37: Save/Load Functionality for Drawings

pom.xml

@@ -68,6 +68,12 @@
     <version>1.0-SNAPSHOT</version>
 
     <dependencies>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.18.3</version>
+        </dependency>
+
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>

src/main/java/ovh/gasser/newshapes/App.java

@@ -11,6 +11,8 @@ import ovh.gasser.newshapes.ui.listeners.MenuEditListener;
 
 import javax.swing.*;
 import java.awt.*;
+import java.awt.event.InputEvent;
+import java.awt.event.KeyEvent;
 import java.io.FileNotFoundException;
 
 public class App {
@@ -19,6 +21,8 @@ public class App {
     private SCollection model;
     private JCheckBoxMenuItem editFill;
     private JCheckBoxMenuItem editBorder;
+    private JMenuItem editGroup;
+    private JMenuItem editUngroup;
 
     private App() throws HeadlessException {
         final JFrame frame = new JFrame("Reactive shapes");
@@ -71,12 +75,38 @@ public class App {
 
     private JMenu buildFileMenu(ShapesView sview) {
         JMenu menuFile = new JMenu("File");
+        JMenuItem openItem = new JMenuItem("Open");
+        JMenuItem saveItem = new JMenuItem("Save");
         JMenuItem addRectItem = new JMenuItem("Add SRectangle");
         JMenuItem addCircleItem = new JMenuItem("Add SCircle");
         JMenuItem addTextItem = new JMenuItem("Add Text");
         JMenuItem htmlExportItem = new JMenuItem("Export to HTML");
         JMenuItem svgExportItem = new JMenuItem("Export to SVG");
         JMenuItem exitItem = new JMenuItem("Exit");
+
+        openItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.CTRL_DOWN_MASK));
+        saveItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_DOWN_MASK));
+
+        openItem.addActionListener(evt -> {
+            JFileChooser chooser = new JFileChooser();
+            chooser.setFileFilter(new javax.swing.filechooser.FileNameExtensionFilter("JSON Files", "json"));
+            if (chooser.showOpenDialog(sview) == JFileChooser.APPROVE_OPTION) {
+                sview.getController().loadDrawing(chooser.getSelectedFile());
+            }
+        });
+
+        saveItem.addActionListener(evt -> {
+            JFileChooser chooser = new JFileChooser();
+            chooser.setFileFilter(new javax.swing.filechooser.FileNameExtensionFilter("JSON Files", "json"));
+            if (chooser.showSaveDialog(sview) == JFileChooser.APPROVE_OPTION) {
+                java.io.File file = chooser.getSelectedFile();
+                if (!file.getName().endsWith(".json")) {
+                    file = new java.io.File(file.getAbsolutePath() + ".json");
+                }
+                sview.getController().saveDrawing(file);
+            }
+        });
+
         addRectItem.addActionListener(new MenuAddListener("SRectangle", model, sview));
         addCircleItem.addActionListener(new MenuAddListener("SCircle", model, sview));
         addTextItem.addActionListener(evt -> sview.getController().enterTextMode());
@@ -95,6 +125,10 @@ public class App {
             }
         });
         exitItem.addActionListener(evt -> System.exit(0));
+
+        menuFile.add(openItem);
+        menuFile.add(saveItem);
+        menuFile.addSeparator();
         menuFile.add(addRectItem);
         menuFile.add(addCircleItem);
         menuFile.add(addTextItem);
@@ -108,32 +142,62 @@ public class App {
     private JMenu buildEditMenu(ShapesView sview) {
         MenuEditListener editListener = new MenuEditListener(model, sview, sview.getController());
         JMenu menuEdit = new JMenu("Edit");
+        JMenuItem cutItem = new JMenuItem("Cut");
+        JMenuItem copyItem = new JMenuItem("Copy");
+        JMenuItem pasteItem = new JMenuItem("Paste");
         JMenuItem editColor = new JMenuItem("Change color");
         JMenuItem editBorderColor = new JMenuItem("Change border color");
         JMenuItem deleteItem = new JMenuItem("Delete");
+        editGroup = new JMenuItem("Group");
+        editUngroup = new JMenuItem("Ungroup");
         editFill = new JCheckBoxMenuItem("Fill Shape");
         editBorder = new JCheckBoxMenuItem("Draw border");
+
+        cutItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_DOWN_MASK));
+        copyItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_DOWN_MASK));
+        pasteItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_DOWN_MASK));
+        editGroup.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_G, InputEvent.CTRL_DOWN_MASK));
+        editUngroup.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_G, InputEvent.CTRL_DOWN_MASK | InputEvent.SHIFT_DOWN_MASK));
+
+        cutItem.addActionListener(evt -> sview.getController().cutSelection());
+        copyItem.addActionListener(evt -> sview.getController().copySelection());
+        pasteItem.addActionListener(evt -> sview.getController().pasteClipboard());
         editColor.addActionListener(editListener);
         editBorderColor.addActionListener(editListener);
         deleteItem.addActionListener(editListener);
+        editGroup.addActionListener(evt -> sview.getController().group());
+        editUngroup.addActionListener(evt -> sview.getController().ungroup());
         editFill.addActionListener(editListener);
         editBorder.addActionListener(editListener);
+        editGroup.setEnabled(false);
+        editUngroup.setEnabled(false);
 
+        menuEdit.add(cutItem);
+        menuEdit.add(copyItem);
+        menuEdit.add(pasteItem);
+        menuEdit.addSeparator();
         menuEdit.add(editColor);
         menuEdit.add(editBorderColor);
         menuEdit.add(deleteItem);
         menuEdit.addSeparator();
+        menuEdit.add(editGroup);
+        menuEdit.add(editUngroup);
+        menuEdit.addSeparator();
         menuEdit.add(editBorder);
         menuEdit.add(editFill);
         return menuEdit;
     }
 
     private void updateMenuState(Iterable<Shape> selectedShapes) {
+        int selectionCount = 0;
+        boolean singleCollectionSelected = false;
         boolean hasToggleableShapes = false;
         boolean allFilled = true;
         boolean allStroked = true;
 
         for (Shape s : selectedShapes) {
+            selectionCount++;
+            singleCollectionSelected = selectionCount == 1 && s instanceof SCollection;
             if (s instanceof SText) {
                 continue;
             }
@@ -145,6 +209,8 @@ public class App {
             }
         }
 
+        editGroup.setEnabled(selectionCount > 1);
+        editUngroup.setEnabled(selectionCount == 1 && singleCollectionSelected);
         updateMenuItem(editFill, hasToggleableShapes, allFilled);
         updateMenuItem(editBorder, hasToggleableShapes, allStroked);
     }

src/main/java/ovh/gasser/newshapes/persistence/DrawingSerializer.java

@@ -0,0 +1,43 @@
+package ovh.gasser.newshapes.persistence;
+
+import com.fasterxml.jackson.core.Version;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import ovh.gasser.newshapes.shapes.SCollection;
+import ovh.gasser.newshapes.shapes.Shape;
+
+import java.io.File;
+import java.io.IOException;
+
+public class DrawingSerializer {
+    private static final String VERSION = "1.0";
+    private final ObjectMapper mapper;
+
+    public DrawingSerializer() {
+        this.mapper = new ObjectMapper();
+        SimpleModule module = new SimpleModule("ShapeModule", new Version(1, 0, 0, null, null, null));
+        module.addSerializer(Shape.class, new ShapeSerializer());
+        module.addDeserializer(Shape.class, new ShapeDeserializer());
+        this.mapper.registerModule(module);
+    }
+
+    public void save(SCollection model, File file) throws IOException {
+        DrawingData data = new DrawingData();
+        data.version = VERSION;
+        data.shapes = new java.util.ArrayList<>();
+        for (Shape shape : model) {
+            data.shapes.add(shape);
+        }
+        mapper.writerWithDefaultPrettyPrinter().writeValue(file, data);
+    }
+
+    public SCollection load(File file) throws IOException {
+        DrawingData data = mapper.readValue(file, DrawingData.class);
+        return SCollection.of(data.shapes.toArray(new Shape[0]));
+    }
+
+    public static class DrawingData {
+        public String version;
+        public java.util.List<Shape> shapes;
+    }
+}

src/main/java/ovh/gasser/newshapes/persistence/ShapeDeserializer.java

@@ -0,0 +1,159 @@
+package ovh.gasser.newshapes.persistence;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
+import ovh.gasser.newshapes.shapes.SCircle;
+import ovh.gasser.newshapes.shapes.SCollection;
+import ovh.gasser.newshapes.shapes.SPolygon;
+import ovh.gasser.newshapes.shapes.SRectangle;
+import ovh.gasser.newshapes.shapes.SText;
+import ovh.gasser.newshapes.shapes.STriangle;
+import ovh.gasser.newshapes.shapes.Shape;
+
+import java.awt.*;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ShapeDeserializer extends StdDeserializer<Shape> {
+
+    public ShapeDeserializer() {
+        super(Shape.class);
+    }
+
+    @Override
+    public Shape deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
+        JsonNode node = p.getCodec().readTree(p);
+        String type = node.get("type").asText();
+
+        return switch (type) {
+            case "rectangle" -> deserializeRectangle(node);
+            case "circle" -> deserializeCircle(node);
+            case "triangle" -> deserializeTriangle(node);
+            case "text" -> deserializeText(node);
+            case "polygon" -> deserializePolygon(node);
+            case "collection" -> deserializeCollection(node, p, ctxt);
+            default -> throw new IllegalArgumentException("Unknown shape type: " + type);
+        };
+    }
+
+    private SRectangle deserializeRectangle(JsonNode node) {
+        int x = node.get("x").asInt();
+        int y = node.get("y").asInt();
+        int width = node.get("width").asInt();
+        int height = node.get("height").asInt();
+
+        Color strokeColor = extractStrokeColor(node);
+        return SRectangle.create(x, y, width, height, strokeColor);
+    }
+
+    private SCircle deserializeCircle(JsonNode node) {
+        int x = node.get("x").asInt();
+        int y = node.get("y").asInt();
+        int radius = node.get("radius").asInt();
+
+        Color strokeColor = extractStrokeColor(node);
+        Color fillColor = extractFillColor(node);
+
+        SCircle circle = SCircle.create(x + radius, y + radius, radius);
+        circle.addAttributes(new ovh.gasser.newshapes.attributes.ColorAttributes(
+                fillColor != null, strokeColor != null, strokeColor, fillColor));
+        return circle;
+    }
+
+    private STriangle deserializeTriangle(JsonNode node) {
+        int x = node.get("x").asInt();
+        int y = node.get("y").asInt();
+        int size = node.get("size").asInt();
+
+        Color strokeColor = extractStrokeColor(node);
+        Color fillColor = extractFillColor(node);
+
+        return STriangle.create(x, y, size, fillColor != null ? fillColor : Color.YELLOW,
+                strokeColor != null ? strokeColor : Color.BLACK);
+    }
+
+    private SText deserializeText(JsonNode node) {
+        int x = node.get("x").asInt();
+        int y = node.get("y").asInt();
+        String text = node.get("text").asText();
+
+        Color strokeColor = extractStrokeColor(node);
+
+        SText sText = SText.create(x, y, text);
+        if (strokeColor != null) {
+            sText.addAttributes(new ovh.gasser.newshapes.attributes.ColorAttributes(
+                    true, true, strokeColor, strokeColor));
+        }
+        return sText;
+    }
+
+    private SPolygon deserializePolygon(JsonNode node) {
+        List<Point> points = new ArrayList<>();
+        JsonNode pointsNode = node.get("points");
+        for (JsonNode pointNode : pointsNode) {
+            int x = pointNode.get("x").asInt();
+            int y = pointNode.get("y").asInt();
+            points.add(new Point(x, y));
+        }
+
+        Color strokeColor = extractStrokeColor(node);
+        Color fillColor = extractFillColor(node);
+
+        SPolygon poly = SPolygon.create(points);
+        if (strokeColor != null || fillColor != null) {
+            poly.addAttributes(new ovh.gasser.newshapes.attributes.ColorAttributes(
+                    fillColor != null, strokeColor != null,
+                    strokeColor != null ? strokeColor : Color.BLACK,
+                    fillColor != null ? fillColor : Color.BLACK));
+        }
+        return poly;
+    }
+
+    private SCollection deserializeCollection(JsonNode node, JsonParser p, DeserializationContext ctxt) throws IOException {
+        List<Shape> children = new ArrayList<>();
+        JsonNode shapesNode = node.get("shapes");
+        if (shapesNode != null && shapesNode.isArray()) {
+            for (JsonNode childNode : shapesNode) {
+                JsonParser childParser = childNode.traverse(p.getCodec());
+                children.add(deserialize(childParser, ctxt));
+            }
+        }
+        return SCollection.of(children.toArray(new Shape[0]));
+    }
+
+    private Color extractStrokeColor(JsonNode node) {
+        if (node.has("color")) {
+            JsonNode colorNode = node.get("color");
+            if (colorNode.has("stroked") && colorNode.get("stroked").asBoolean()) {
+                return hexToColor(colorNode.get("strokedColor").asText());
+            }
+        }
+        return null;
+    }
+
+    private Color extractFillColor(JsonNode node) {
+        if (node.has("color")) {
+            JsonNode colorNode = node.get("color");
+            if (colorNode.has("filled") && colorNode.get("filled").asBoolean()) {
+                return hexToColor(colorNode.get("filledColor").asText());
+            }
+        }
+        return null;
+    }
+
+    private Color hexToColor(String hex) {
+        if (hex == null || hex.isEmpty()) return Color.BLACK;
+        try {
+            return new Color(
+                    Integer.parseInt(hex.substring(1, 3), 16),
+                    Integer.parseInt(hex.substring(3, 5), 16),
+                    Integer.parseInt(hex.substring(5, 7), 16)
+            );
+        } catch (Exception e) {
+            return Color.BLACK;
+        }
+    }
+}

src/main/java/ovh/gasser/newshapes/persistence/ShapeSerializer.java

@@ -0,0 +1,121 @@
+package ovh.gasser.newshapes.persistence;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import ovh.gasser.newshapes.attributes.ColorAttributes;
+import ovh.gasser.newshapes.shapes.SCircle;
+import ovh.gasser.newshapes.shapes.SCollection;
+import ovh.gasser.newshapes.shapes.SPolygon;
+import ovh.gasser.newshapes.shapes.SRectangle;
+import ovh.gasser.newshapes.shapes.SText;
+import ovh.gasser.newshapes.shapes.STriangle;
+import ovh.gasser.newshapes.shapes.Shape;
+
+import java.awt.*;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ShapeSerializer extends JsonSerializer<Shape> {
+
+    @Override
+    public void serialize(Shape shape, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+        gen.writeStartObject();
+
+        if (shape instanceof SRectangle rect) {
+            gen.writeStringField("type", "rectangle");
+            writeRectangle(rect, gen);
+        } else if (shape instanceof SCircle circle) {
+            gen.writeStringField("type", "circle");
+            writeCircle(circle, gen);
+        } else if (shape instanceof STriangle tri) {
+            gen.writeStringField("type", "triangle");
+            writeTriangle(tri, gen);
+        } else if (shape instanceof SText text) {
+            gen.writeStringField("type", "text");
+            writeText(text, gen);
+        } else if (shape instanceof SPolygon poly) {
+            gen.writeStringField("type", "polygon");
+            writePolygon(poly, gen);
+        } else if (shape instanceof SCollection coll) {
+            gen.writeStringField("type", "collection");
+            writeCollection(coll, gen);
+        }
+
+        gen.writeEndObject();
+    }
+
+    private void writeRectangle(SRectangle rect, JsonGenerator gen) throws IOException {
+        Rectangle bounds = rect.getBounds();
+        gen.writeNumberField("x", bounds.x);
+        gen.writeNumberField("y", bounds.y);
+        gen.writeNumberField("width", bounds.width);
+        gen.writeNumberField("height", bounds.height);
+        writeColorAttributes(rect, gen);
+    }
+
+    private void writeCircle(SCircle circle, JsonGenerator gen) throws IOException {
+        Rectangle bounds = circle.getBounds();
+        gen.writeNumberField("x", bounds.x);
+        gen.writeNumberField("y", bounds.y);
+        gen.writeNumberField("radius", circle.getRadius());
+        writeColorAttributes(circle, gen);
+    }
+
+    private void writeTriangle(STriangle tri, JsonGenerator gen) throws IOException {
+        Rectangle bounds = tri.getBounds();
+        gen.writeNumberField("x", bounds.x);
+        gen.writeNumberField("y", bounds.y);
+        gen.writeNumberField("size", bounds.width);
+        writeColorAttributes(tri, gen);
+    }
+
+    private void writeText(SText text, JsonGenerator gen) throws IOException {
+        Rectangle bounds = text.getBounds();
+        gen.writeNumberField("x", bounds.x);
+        gen.writeNumberField("y", bounds.y);
+        gen.writeStringField("text", text.getText());
+        gen.writeStringField("fontName", text.getFontName());
+        gen.writeNumberField("fontSize", text.getFontSize());
+        gen.writeNumberField("fontStyle", text.getFontStyle());
+        writeColorAttributes(text, gen);
+    }
+
+    private void writePolygon(SPolygon poly, JsonGenerator gen) throws IOException {
+        gen.writeArrayFieldStart("points");
+        for (Point p : poly.getPoints()) {
+            gen.writeStartObject();
+            gen.writeNumberField("x", p.x);
+            gen.writeNumberField("y", p.y);
+            gen.writeEndObject();
+        }
+        gen.writeEndArray();
+        writeColorAttributes(poly, gen);
+    }
+
+    private void writeCollection(SCollection coll, JsonGenerator gen) throws IOException {
+        gen.writeArrayFieldStart("shapes");
+        for (Shape child : coll) {
+            serialize(child, gen, null);
+        }
+        gen.writeEndArray();
+    }
+
+    private void writeColorAttributes(Shape shape, JsonGenerator gen) throws IOException {
+        ColorAttributes attrs = (ColorAttributes) shape.getAttributes(ColorAttributes.ID);
+        if (attrs != null) {
+            gen.writeObjectFieldStart("color");
+            gen.writeBooleanField("filled", attrs.filled);
+            gen.writeBooleanField("stroked", attrs.stroked);
+            gen.writeStringField("filledColor", colorToHex(attrs.filledColor));
+            gen.writeStringField("strokedColor", colorToHex(attrs.strokedColor));
+            gen.writeEndObject();
+        }
+    }
+
+    private String colorToHex(Color c) {
+        if (c == null) return "#000000";
+        return String.format("#%02x%02x%02x", c.getRed(), c.getGreen(), c.getBlue());
+    }
+}

src/main/java/ovh/gasser/newshapes/ui/ShapeDraftman.java

@@ -117,30 +117,6 @@ public class ShapeDraftman implements ShapeVisitor {
         drawHandlerIfSelected(text);
     }
 
-    @Override
-    public void visitPolygon(SPolygon polygon) {
-        ColorAttributes colAttrs = (ColorAttributes) polygon.getAttributes(ColorAttributes.ID);
-        if (colAttrs == null) {
-            colAttrs = DEFAULT_COLOR_ATTRIBUTES;
-        }
-
-        java.util.List<Point> points = polygon.getPoints();
-        int[] xPoints = points.stream().mapToInt(p -> p.x).toArray();
-        int[] yPoints = points.stream().mapToInt(p -> p.y).toArray();
-        int nPoints = points.size();
-
-        if (colAttrs.filled) {
-            this.g2d.setColor(colAttrs.filledColor);
-            this.g2d.fillPolygon(xPoints, yPoints, nPoints);
-        }
-        if (colAttrs.stroked) {
-            this.g2d.setColor(colAttrs.strokedColor);
-            this.g2d.drawPolygon(xPoints, yPoints, nPoints);
-        }
-
-        drawHandlerIfSelected(polygon);
-    }
-
     private Color resolveTextColor(ColorAttributes attrs) {
         if (attrs == null) {
             return Color.BLACK;

src/main/java/ovh/gasser/newshapes/ui/ShapesView.java

@@ -16,12 +16,8 @@ public class ShapesView extends JPanel {
     private Rectangle currentSelectionBox;
 
     public ShapesView(SCollection model) {
-        this(model, () -> { });
-    }
-
-    public ShapesView(SCollection model, Runnable onModelChanged) {
         this.model = model;
-        this.controller = new Controller(this, model, onModelChanged);
+        this.controller = new Controller(this, model);
     }
 
     @Override

src/test/java/ovh/gasser/newshapes/ui/BoxSelectionTest.java

@@ -1,128 +0,0 @@
-package ovh.gasser.newshapes.ui;
-
-import org.junit.jupiter.api.Test;
-import ovh.gasser.newshapes.attributes.SelectionAttributes;
-import ovh.gasser.newshapes.shapes.SCollection;
-import ovh.gasser.newshapes.shapes.SRectangle;
-import ovh.gasser.newshapes.shapes.Shape;
-
-import javax.swing.*;
-import java.awt.*;
-import java.awt.event.InputEvent;
-import java.awt.event.MouseEvent;
-import java.awt.image.BufferedImage;
-import java.lang.reflect.InvocationTargetException;
-
-import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-
-class BoxSelectionTest {
-
-    @Test
-    void draggingSelectionBoxSelectsAllIntersectingShapes() throws Exception {
-        SRectangle first = SRectangle.create(20, 20, 30, 30);
-        SRectangle second = SRectangle.create(80, 80, 30, 30);
-        SRectangle outside = SRectangle.create(160, 160, 30, 30);
-        ShapesView view = createView(first, second, outside);
-
-        dragSelection(view, new Point(5, 5), new Point(100, 100), 0);
-
-        assertTrue(isSelected(first));
-        assertTrue(isSelected(second));
-        assertFalse(isSelected(outside));
-    }
-
-    @Test
-    void shiftDraggingSelectionBoxAddsToExistingSelection() throws Exception {
-        SRectangle first = SRectangle.create(10, 10, 30, 30);
-        SRectangle second = SRectangle.create(80, 10, 30, 30);
-        SRectangle outside = SRectangle.create(160, 10, 30, 30);
-        ShapesView view = createView(first, second, outside);
-
-        click(view, new Point(20, 20), 0);
-        dragSelection(view, new Point(70, 5), new Point(120, 50), InputEvent.SHIFT_DOWN_MASK);
-
-        assertTrue(isSelected(first));
-        assertTrue(isSelected(second));
-        assertFalse(isSelected(outside));
-    }
-
-    @Test
-    void shapesViewPaintsSelectionBoxDuringRendering() throws Exception {
-        ShapesView view = createView();
-
-        BufferedImage withoutSelectionBox = paintView(view, null);
-        BufferedImage withSelectionBox = paintView(view, new Rectangle(10, 10, 40, 40));
-
-        assertTrue(imagesDiffer(withoutSelectionBox, withSelectionBox));
-    }
-
-    private ShapesView createView(Shape... shapes) throws InvocationTargetException, InterruptedException {
-        final ShapesView[] ref = new ShapesView[1];
-        SwingUtilities.invokeAndWait(() -> {
-            ref[0] = new ShapesView(SCollection.of(shapes));
-            ref[0].setOpaque(true);
-            ref[0].setBackground(Color.WHITE);
-            ref[0].setSize(240, 240);
-        });
-        return ref[0];
-    }
-
-    private void click(ShapesView view, Point point, int modifiers) throws InvocationTargetException, InterruptedException {
-        dispatch(view, MouseEvent.MOUSE_PRESSED, point, modifiers);
-        dispatch(view, MouseEvent.MOUSE_RELEASED, point, modifiers);
-    }
-
-    private void dragSelection(ShapesView view, Point start, Point end, int modifiers) throws InvocationTargetException, InterruptedException {
-        dispatch(view, MouseEvent.MOUSE_PRESSED, start, modifiers);
-        dispatch(view, MouseEvent.MOUSE_DRAGGED, end, modifiers);
-        dispatch(view, MouseEvent.MOUSE_RELEASED, end, modifiers);
-    }
-
-    private void dispatch(ShapesView view, int eventId, Point point, int modifiers)
-            throws InvocationTargetException, InterruptedException {
-        SwingUtilities.invokeAndWait(() -> view.dispatchEvent(new MouseEvent(
-                view,
-                eventId,
-                System.currentTimeMillis(),
-                modifiers,
-                point.x,
-                point.y,
-                1,
-                false,
-                MouseEvent.BUTTON1
-        )));
-    }
-
-    private BufferedImage paintView(ShapesView view, Rectangle box)
-            throws InvocationTargetException, InterruptedException {
-        final BufferedImage[] ref = new BufferedImage[1];
-        SwingUtilities.invokeAndWait(() -> {
-            view.setCurrentSelectionBox(box);
-            BufferedImage image = new BufferedImage(240, 240, BufferedImage.TYPE_INT_ARGB);
-            Graphics2D graphics = image.createGraphics();
-            try {
-                view.paint(graphics);
-            } finally {
-                graphics.dispose();
-            }
-            ref[0] = image;
-        });
-        return ref[0];
-    }
-
-    private boolean imagesDiffer(BufferedImage first, BufferedImage second) {
-        for (int y = 0; y < first.getHeight(); y++) {
-            for (int x = 0; x < first.getWidth(); x++) {
-                if (first.getRGB(x, y) != second.getRGB(x, y)) {
-                    return true;
-                }
-            }
-        }
-        return false;
-    }
-
-    private boolean isSelected(Shape shape) {
-        return ((SelectionAttributes) shape.getAttributes(SelectionAttributes.ID)).selected;
-    }
-}