initial

diylc/.gitignore

@@ -147,10 +147,3 @@ buildNumber.properties
 
 # Avoid ignoring Maven wrapper jar file (.jar files are usually ignored)
 !/.mvn/wrapper/maven-wrapper.jar
-
-######################
-######  Custom  ######
-######################
-
-# Deployment folder
-deploy/

diylc/HEADER.txt

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/build-all-profiles.sh

@@ -1,123 +0,0 @@
-#!/bin/bash
-
-# Script to build all Maven profiles and copy zip files to deployment folder
-# Usage: ./build-all-profiles.sh [to-deploy-folder]
-
-set -e  # Exit on error
-
-# Parse arguments
-DEPLOY_DIR="${1:-}"
-
-# Configuration
-PROJECT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-SWING_MODULE_DIR="${PROJECT_DIR}/diylc-swing"
-DEPLOY_DIR="${DEPLOY_DIR:-${PROJECT_DIR}/deploy}"
-
-# List of profiles to build
-PROFILES=(
-    "universal-zip"
-    "linux-appimage"
-    "win64-zip"
-    "win64-installer"
-    "mac-x86"
-    "mac-arm"
-)
-
-echo "=========================================="
-echo "Building all Maven profiles"
-echo "=========================================="
-echo "Project directory: ${PROJECT_DIR}"
-echo "Swing module directory: ${SWING_MODULE_DIR}"
-echo "Deployment directory: ${DEPLOY_DIR}"
-echo "Tests: Skipped"
-echo ""
-
-# Create deployment directory if it doesn't exist
-mkdir -p "${DEPLOY_DIR}"
-
-# Change to project root directory
-cd "${PROJECT_DIR}"
-
-# Build each profile (clean before each one)
-TARGET_DIR="${SWING_MODULE_DIR}/target"
-TOTAL_ZIP_COUNT=0
-
-for profile in "${PROFILES[@]}"; do
-    echo "----------------------------------------"
-    echo "Building profile: ${profile}"
-    echo "----------------------------------------"
-    
-    # Clean and build from root, specifying the swing module and profile
-    # This ensures dependencies (diylc-core, diylc-library) are built first
-    mvn clean package -pl diylc-swing -am -P"${profile}" -DskipTests || {
-        echo "ERROR: Failed to build profile ${profile}"
-        echo "Continuing with next profile..."
-        continue
-    }
-    
-    echo "✓ Profile ${profile} built successfully"
-    
-    # Copy zip and exe files immediately after each build (before next clean)
-    if [ -d "${TARGET_DIR}" ]; then
-        echo "Looking for artifacts in ${TARGET_DIR}..."
-        PROFILE_FILE_COUNT=0
-        
-        # Find all zip files in target directory (excluding DIYLC-notarize.zip)
-        while IFS= read -r -d '' zipfile; do
-            filename=$(basename "${zipfile}")
-            # Skip DIYLC-notarize.zip files
-            if [[ "${filename}" != "DIYLC-notarize.zip" ]] && [ -f "${zipfile}" ]; then
-                dest="${DEPLOY_DIR}/${filename}"
-                
-                echo "  → Copying: ${filename}"
-                cp "${zipfile}" "${dest}"
-                TOTAL_ZIP_COUNT=$((TOTAL_ZIP_COUNT + 1))
-                PROFILE_FILE_COUNT=$((PROFILE_FILE_COUNT + 1))
-            fi
-        done < <(find "${TARGET_DIR}" -maxdepth 1 -type f -name "*.zip" -print0 2>/dev/null)
-        
-        # Find all exe files in target directory
-        while IFS= read -r -d '' exefile; do
-            if [ -f "${exefile}" ]; then
-                filename=$(basename "${exefile}")
-                dest="${DEPLOY_DIR}/${filename}"
-                
-                echo "  → Copying: ${filename}"
-                cp "${exefile}" "${dest}"
-                TOTAL_ZIP_COUNT=$((TOTAL_ZIP_COUNT + 1))
-                PROFILE_FILE_COUNT=$((PROFILE_FILE_COUNT + 1))
-            fi
-        done < <(find "${TARGET_DIR}" -maxdepth 1 -type f -name "*.exe" -print0 2>/dev/null)
-        
-        if [ ${PROFILE_FILE_COUNT} -eq 0 ]; then
-            echo "  ⚠ Warning: No artifacts found for profile ${profile}"
-            # List what's actually in the target directory for debugging
-            echo "  Debug: Files in target directory:"
-            ls -la "${TARGET_DIR}"/*.{zip,exe} 2>/dev/null | head -5 || echo "    (no zip/exe files found)"
-        else
-            echo "  ✓ Copied ${PROFILE_FILE_COUNT} file(s) from ${profile}"
-        fi
-    else
-        echo "  ⚠ Warning: Target directory ${TARGET_DIR} does not exist"
-    fi
-    
-    echo ""
-done
-
-echo "=========================================="
-echo "Copying summary"
-echo "=========================================="
-if [ ${TOTAL_ZIP_COUNT} -eq 0 ]; then
-    echo "No artifacts were copied"
-else
-    echo "✓ Copied ${TOTAL_ZIP_COUNT} file(s) total to ${DEPLOY_DIR}"
-fi
-
-echo ""
-echo "=========================================="
-echo "Build and deployment complete!"
-echo "=========================================="
-echo "Deployment folder: ${DEPLOY_DIR}"
-echo "Files:"
-ls -lh "${DEPLOY_DIR}"/*.{zip,exe} 2>/dev/null || echo "  (no zip/exe files found)"
-

diylc/diylc-core/pom.xml

@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.diylc</groupId>
         <artifactId>diylc-parent</artifactId>
-        <version>5.10.0</version>
+        <version>5.4.0</version>
     </parent>
     
     <artifactId>diylc-core</artifactId>

diylc/diylc-core/src/main/java/org/diylc/announcements/Announcement.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/announcements/AnnouncementProvider.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/announcements/IAnnouncementService.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/clipboard/ComponentTransferable.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -29,7 +29,6 @@ import java.io.Serializable;
 import java.util.List;
 import java.util.Set;
 
-import org.diylc.core.ComponentGroup;
 import org.diylc.core.IDIYComponent;
 
 /**
@@ -45,21 +44,19 @@ public class ComponentTransferable implements Transferable, Serializable {
   public static final DataFlavor listFlavor = new DataFlavor(ComponentTransferable.class, "application/diylc");
   
   private List<IDIYComponent<?>> components;
-  private Set<ComponentGroup> groups;
+  private Set<Set<IDIYComponent<?>>> groups;
-  private String name;
 
   public ComponentTransferable() {
     super();
   }
   
-  public ComponentTransferable(List<IDIYComponent<?>> components, String name) {
+  public ComponentTransferable(List<IDIYComponent<?>> components) {
     super();
     this.components = components;
-    this.name = name;
     this.groups = null;
   }
 
-  public ComponentTransferable(List<IDIYComponent<?>> components, Set<ComponentGroup> groups) {
+  public ComponentTransferable(List<IDIYComponent<?>> components, Set<Set<IDIYComponent<?>>> groups) {
     super();
     this.components = components;
     this.groups = groups;
@@ -87,11 +84,7 @@ public class ComponentTransferable implements Transferable, Serializable {
     return components;
   }
   
-  public Set<ComponentGroup> getGroups() {
+  public Set<Set<IDIYComponent<?>>> getGroups() {
     return groups;
   }
-
-  public String getName() {
-    return name;
-  }
 }

diylc/diylc-core/src/main/java/org/diylc/clipboard/ComponentTransferableFactory.java

@@ -1,6 +1,6 @@
 /*
  * 
- * DIY Layout Creator (DIYLC). Copyright (c) 2009-2025 held jointly by the individual authors.
+ * DIY Layout Creator (DIYLC). Copyright (c) 2009-2018 held jointly by the individual authors.
  * 
  * This file is part of DIYLC.
  * 
@@ -17,11 +17,15 @@
  */
 package org.diylc.clipboard;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
 import java.util.stream.Collectors;
 import org.apache.log4j.Logger;
 
-import org.diylc.core.ComponentGroup;
 import org.diylc.core.IDIYComponent;
 
 public class ComponentTransferableFactory {
@@ -36,19 +40,13 @@ public class ComponentTransferableFactory {
     return instance;
   }
   
-  public ComponentTransferable build(Collection<IDIYComponent<?>> selectedComponents, Set<ComponentGroup> groups) {
+  public ComponentTransferable build(Collection<IDIYComponent<?>> selectedComponents, Set<Set<IDIYComponent<?>>> groups) {
-
+    Set<IDIYComponent<?>> originalComponentSet = new HashSet<IDIYComponent<?>>(selectedComponents);
     List<IDIYComponent<?>> originalComponents = new ArrayList<IDIYComponent<?>>(selectedComponents);
-
-    Map<UUID, UUID> idMap = new HashMap<>();
-
     List<IDIYComponent<?>> clonedComponents = originalComponents.stream(
         ).map(x -> {
           try {
-            IDIYComponent<?> clone = x.clone();
+            return x.clone();
-            clone.setId(UUID.randomUUID());
-            idMap.put(x.getId(), clone.getId());
-            return clone;
           } catch (CloneNotSupportedException e) {
             LOG.error(e);
             return null;
@@ -56,18 +54,22 @@ public class ComponentTransferableFactory {
         })
         .filter(Objects::nonNull)
         .collect(Collectors.toList());
-
+    Set<Set<IDIYComponent<?>>> clonedGroups = new HashSet<Set<IDIYComponent<?>>>();
-    Set<ComponentGroup> clonedGroups = groups.stream()
+    
-        .map(group -> {
+    for (Set<IDIYComponent<?>> group : groups) {
-          Set<UUID> newIds = group.getComponentIds().stream()
+      if (group.isEmpty())
-              .map(idMap::get)
+        continue;
-              .filter(Objects::nonNull)
+      
-              .collect(Collectors.toSet());
+      if (originalComponentSet.contains(group.iterator().next())) {
-          // Only create group if it has at least one valid ID
+        Set<IDIYComponent<?>> clonedGroup = new HashSet<IDIYComponent<?>>();
-          return newIds.isEmpty() ? null : new ComponentGroup(newIds, group.getName());
+        clonedGroups.add(clonedGroup);
-        })
+        for (int i = 0; i < originalComponents.size(); i++) {
-        .filter(Objects::nonNull)
+          if (group.contains(originalComponents.get(i))) {
-        .collect(Collectors.toSet());
+            clonedGroup.add(clonedComponents.get(i));
+          }
+        }
+      }
+    }
     
     return new ComponentTransferable(clonedComponents, clonedGroups);
   }

diylc/diylc-core/src/main/java/org/diylc/common/BadPositionException.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/BuildingBlock.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/BuildingBlockPackage.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/ComponentType.java

@@ -1,6 +1,6 @@
 /*
  * 
- * DIY Layout Creator (DIYLC). Copyright (c) 2009-2025 held jointly by the individual authors.
+ * DIY Layout Creator (DIYLC). Copyright (c) 2009-2018 held jointly by the individual authors.
  * 
  * This file is part of DIYLC.
  * 

diylc/diylc-core/src/main/java/org/diylc/common/Display.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/DrawOption.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -68,9 +68,5 @@ public enum DrawOption {
   /**
    * Whether locked components should be rendered as transparent or not.
    */
-  LOCKED_ALPHA,
+  LOCKED_ALPHA;
-  /**
-   * When applied, all colors will be converted to blackest black or whitest white
-   */
-  MONOCHROMATIC;
 }

diylc/diylc-core/src/main/java/org/diylc/common/EventType.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -21,6 +21,7 @@
 */
 package org.diylc.common;
 
+import java.awt.Rectangle;
 import java.awt.geom.Point2D;
 
 import org.diylc.core.Project;
@@ -54,7 +55,12 @@ public enum EventType {
    */
   FILE_STATUS_CHANGED,
   /**
-   * Called when component selection is changed. New list of components and control point map is attached as a
+   * Called when selection rectangle is changed. Object of type {@link Rectangle} is the only
+   * parameter and it contains the new selection rectangle.
+   */
+  SELECTION_RECT_CHANGED,
+  /**
+   * Called when component selection is changed. New {@link ComponentSelection} is attached as a
    * parameter.
    */
   SELECTION_CHANGED,

diylc/diylc-core/src/main/java/org/diylc/common/Favorite.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/GridType.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/HorizontalAlignment.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/IBlockProcessor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/IComponentFilter.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -19,7 +19,7 @@
     along with DIYLC.  If not, see <http://www.gnu.org/licenses/>.
 
 */
-package org.diylc.filter;
+package org.diylc.common;
 
 import org.diylc.core.IDIYComponent;
 

diylc/diylc-core/src/main/java/org/diylc/common/IComponentTransformer.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/IGroupProcessor.java

@@ -1,52 +0,0 @@
-/*
-    DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
-
-    This file is part of DIYLC.
-
-    DIYLC is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    DIYLC is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with DIYLC.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-package org.diylc.common;
-
-import java.util.Set;
-
-import org.diylc.core.ComponentGroup;
-
-/**
- * Interface for component grouping operations.
- * 
- * @author Branislav Stojkovic
- */
-public interface IGroupProcessor {
-
-  /**
-   * Returns the set of component groups in the current project. Each group is a set of components
-   * that are grouped together.
-   *
-   * @return set of component groups
-   */
-  Set<ComponentGroup> getComponentGroups();
-
-  /**
-   * Groups all selected components.
-   */
-  void groupSelectedComponents();
-
-  /**
-   * Ungroups all selected components.
-   */
-  void ungroupSelectedComponents();
-}
-

diylc/diylc-core/src/main/java/org/diylc/common/IKeyProcessor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/IMouseProcessor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/INetlistAnalyzer.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/INetlistProcessor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/IPlugIn.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/IPlugInPort.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -41,18 +41,16 @@ import org.diylc.core.IDIYComponent;
 import org.diylc.core.Project;
 import org.diylc.core.Template;
 import org.diylc.core.Theme;
-import org.diylc.core.measures.ResizeDimensions;
 import org.diylc.core.measures.Size;
-import org.diylc.filter.IComponentFilter;
 import org.diylc.test.ITestProcessor;
 
 /**
  * Interface for communication between plug-ins and the application. Plug-ins may acquire
  * information or make changes through this interface. Application events are dispatched to plug-ins
  * through {@link MessageDispatcher}
- *
+ * 
  * @author Branislav Stojkovic
- *
+ * 
  * @see IPlugIn
  * @see MessageDispatcher
  * @see IMessageListener
@@ -86,20 +84,18 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
   public static final String RENUMBER_ON_PASTE_KEY = "renumberOnPaste";
   public static final String RULER_IN_SUBDIVISION_KEY = "rulerInSubdivision";
   public static final String CACHING_ENABLED_KEY = "cachingEnabled";
-  public static final String FONT_SCALE_FACTOR_KEY = "fontScaleFactor";
+  
-  public static final String SHOW_RESIZE_DIMENSIONS_TOOLTIP_KEY = "showResizeDimensionsTooltip";
-
   public static final String RULER_IN_SUBDIVISION_2 = "base of 2";
   public static final String RULER_IN_SUBDIVISION_10 = "base of 10";
   public static final String RULER_IN_SUBDIVISION_DEFAULT = RULER_IN_SUBDIVISION_10;
-
+  
   public static final String SNAP_TO_NONE = "None";
   public static final String SNAP_TO_GRID = "Grid";
   public static final String SNAP_TO_COMPONENTS = "Components";
   public static final String SNAP_TO_DEFAULT = SNAP_TO_GRID;
-
+  
   public static final String LOCKED_ALPHA = "lockedAlpha";
-
+  
   public static final String LANGUAGE = "language";
   public static final String LANGUAGE_DEFAULT = "English";
 
@@ -112,25 +108,25 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
   public static final int NOBUTTON = 0;
   public static final int BUTTON1 = 1;
   public static final int BUTTON2 = 2;
-  public static final int BUTTON3 = 3;
+  public static final int BUTTON3 = 3;  
 
   /**
    * Returns size of the canvas that takes project dimensions into account as well as zoom level.
    * Each dimension is calculated as the product of the actual size and the number of pixels per
    * unit. If <code>useZoom</code> is set to true, the result is scaled by zoom factor.
-   *
+   * 
    * @param useZoom
    * @param includeExtraSpace
-   *
+   * 
    * @return canvas dimensions
    */
   Dimension getCanvasDimensions(boolean useZoom, boolean includeExtraSpace);
 
   /**
    * Returns an instance of {@link Cursor} that should be used at the specified location.
-   *
+   * 
    * Note: point coordinates are scaled for zoom factor.
-   *
+   * 
    * @param point
    * @param ctrlDown
    * @param shiftDown
@@ -141,14 +137,14 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Returns an instance of currently loaded project.
-   *
+   * 
    * @return
    */
   Project getCurrentProject();
 
   /**
    * Loads specified {@link Project}.
-   *
+   * 
    * @param project
    * @param freshStart
    * @param filename file name when loading from a file
@@ -162,22 +158,22 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Loads a project from the specified file.
-   *
+   * 
    * @param fileName
    */
   void loadProjectFromFile(String fileName);
 
   /**
    * Saves the current project into the specified file.
-   *
+   * 
    * @param fileName
    * @param isBackup
    */
   void saveProjectToFile(String fileName, boolean isBackup);
-
+  
   /**
    * Exports the current project into one or more files - one per layer and potentially drill layer.
-   *
+   * 
    * @param fileNameBase
    * @param g2d
    */
@@ -195,7 +191,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Shows a user dialog if there are changes to confirm that it's safe to proceed.
-   *
+   * 
    * @return true, if file actions (new, open, close) can be taken
    */
   boolean allowFileAction();
@@ -204,7 +200,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
    * Returns all available {@link ComponentType}s classified by category. Result is a {@link Map}
    * between category name to a {@link List} of all {@link ComponentType}s that share that category
    * name.
-   *
+   * 
    * @return
    */
   Map<String, List<ComponentType>> getComponentTypes();
@@ -212,7 +208,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
   /**
    * Draws project on the provided {@link Graphics2D}. If the provided filter is not null, it will
    * be used to filter the components that are shown.
-   *
+   * 
    * @param g2d
    * @param drawOptions specific drawing options
    * @param filter
@@ -226,35 +222,35 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Returns current zoom level where <code>zoomLevel = 1.0d</code> means 100%.
-   *
+   * 
    * @return current zoom level
    */
   double getZoomLevel();
 
   /**
    * Changes current zoom level where <code>zoomLevel = 1.0d</code> means 100%
-   *
+   * 
    * @param zoomLevel new zoom leve
    */
   void setZoomLevel(double zoomLevel);
 
   /**
    * Returns current version number.
-   *
+   * 
    * @return
    */
   VersionNumber getCurrentVersionNumber();
-
+  
   /**
-   * Returns few most recent versions.
+   * Returns few most recent versions. 
-   *
+   * 
    * @return
    */
   List<Version> getRecentUpdates();
 
   /**
    * Adds a list of components to the project.
-   *
+   * 
    * @param componentTransferable
    * @param autoGroup
    * @param assignNewNames
@@ -273,7 +269,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Sets default value for the specified property name for currently selected component types.
-   *
+   * 
    * @param propertyName display name for property
    * @param value new default value, must not be null
    */
@@ -281,7 +277,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Sets default value for the specified property name for projects.
-   *
+   * 
    * @param clazz class to set defaults to
    * @param propertyName display name for property
    * @param value new default value, must not be null
@@ -295,15 +291,6 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
    */
   List<PropertyWrapper> getMutualSelectionProperties();
 
-  /**
-   * Available only during resizing, returns the dimensions of the component being resized.
-   * Otherwise returns null.
-   *
-   * @return ResizeDimensions with width, height (in mm or in depending on configuration), 
-   *         and length (if component implements IHaveLength), or null if not resizing
-   */
-  ResizeDimensions getResizeDimensions();
-
   void editSelection();
 
   /**

diylc/diylc-core/src/main/java/org/diylc/common/IProjectEditor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/ISelectionProcessor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -31,7 +31,7 @@ import org.diylc.core.ExpansionMode;
 import org.diylc.core.IDIYComponent;
 import org.diylc.core.measures.Size;
 
-public interface ISelectionProcessor extends IGroupProcessor {
+public interface ISelectionProcessor {
 
   /**
    * Returns the current {@link ComponentTransferable}.
@@ -89,6 +89,16 @@ public interface ISelectionProcessor extends IGroupProcessor {
    */
   void rotateSelection(int direction);
 
+  /**
+   * Groups all selected components.
+   */
+  void groupSelectedComponents();
+
+  /**
+   * Ungroups all selected components.
+   */
+  void ungroupSelectedComponents();
+
   /**
    * Mirrors selected components in the given axis.
    * 

diylc/diylc-core/src/main/java/org/diylc/common/IServiceManager.java

@@ -3,7 +3,6 @@ package org.diylc.common;
 import org.diylc.appframework.simplemq.MessageDispatcher;
 import org.diylc.plugins.chatbot.service.ChatbotService;
 import org.diylc.plugins.cloud.service.CloudService;
-import org.diylc.plugins.compare.service.CompareService;
 import org.diylc.presenter.DrawingManager;
 
 public interface IServiceManager {
@@ -12,8 +11,6 @@ public interface IServiceManager {
 
   ChatbotService getChatbotService();
 
-  CompareService getCompareService();
-
   MessageDispatcher<EventType> getMessageDispatcher();
 
   DrawingManager getDrawingManager();

diylc/diylc-core/src/main/java/org/diylc/common/ITask.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/IVariantProcessor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/LabelPosition.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/LineStyle.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/ObjectCache.java

@@ -1,6 +1,6 @@
 /*
  * 
- * DIY Layout Creator (DIYLC). Copyright (c) 2009-2025 held jointly by the individual authors.
+ * DIY Layout Creator (DIYLC). Copyright (c) 2009-2018 held jointly by the individual authors.
  * 
  * This file is part of DIYLC.
  * 

diylc/diylc-core/src/main/java/org/diylc/common/Orientation.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/Orientation45.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/OrientationHV.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/PCBLayer.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/PropertyWrapper.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/ResistorColorCode.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/VariantPackage.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/VerticalAlignment.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/common/ZoomableStroke.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/components/AbstractAngledComponent.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/components/AbstractComponent.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -30,7 +30,6 @@ import java.lang.reflect.Array;
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 import java.util.Arrays;
-import java.util.UUID;
 import java.util.stream.Collectors;
 
 import org.diylc.core.IDIYComponent;
@@ -53,7 +52,6 @@ public abstract class AbstractComponent<T> implements IDIYComponent<T> {
 
   private static final long serialVersionUID = 1L;
 
-  protected UUID id = UUID.randomUUID();
   protected String name = "";
 
   public static Color SELECTION_COLOR = Color.red;
@@ -64,7 +62,6 @@ public abstract class AbstractComponent<T> implements IDIYComponent<T> {
   public static Color LIGHT_METAL_COLOR = Color.decode("#EEEEEE");
   public static Color COPPER_COLOR = Color.decode("#DA8A67");
   public static Color GOLD_COLOR = Color.decode("#F4B301");
-  public static Color BRASS_COLOR = Color.decode("#B8860B");
   public static Color FR4_COLOR = Color.decode("#6B9B6B");
   public static Color FR4_LIGHT_COLOR = Color.decode("#BABE71");
   public static Color PHENOLIC_COLOR = Color.decode("#F8EBB3");
@@ -81,19 +78,6 @@ public abstract class AbstractComponent<T> implements IDIYComponent<T> {
     this.name = name;
   }
 
-  @Override
-  public UUID getId() {
-    if (id == null) {
-      id = UUID.randomUUID();
-    }
-    return id;
-  }
-
-  @Override
-  public void setId(UUID id) {
-    this.id = id;
-  }
-
   @Override
   public boolean canControlPointOverlap(int index) {
     return false;
@@ -202,10 +186,6 @@ public abstract class AbstractComponent<T> implements IDIYComponent<T> {
             field.setAccessible(true);
             Object value = field.get(this);
 
-            if (field.getName().equalsIgnoreCase("id")) {
-              value = getId();
-            }
-
             // Deep copy point arrays.
             // TODO: something nicer
             if (value != null && value.getClass().isArray()

diylc/diylc-core/src/main/java/org/diylc/components/AbstractCurvedComponent.java

@@ -1,6 +1,6 @@
 /*
  * 
- * DIY Layout Creator (DIYLC). Copyright (c) 2009-2025 held jointly by the individual authors.
+ * DIY Layout Creator (DIYLC). Copyright (c) 2009-2018 held jointly by the individual authors.
  * 
  * This file is part of DIYLC.
  * 
@@ -37,14 +37,16 @@ import com.thoughtworks.xstream.annotations.XStreamOmitField;
 import org.diylc.common.IPlugInPort;
 import org.diylc.common.LineStyle;
 import org.diylc.common.ObjectCache;
-import org.diylc.core.*;
+import org.diylc.core.ComponentState;
+import org.diylc.core.IDrawingObserver;
+import org.diylc.core.Project;
+import org.diylc.core.VisibilityPolicy;
 import org.diylc.core.annotations.EditableProperty;
 import org.diylc.core.measures.Size;
 import org.diylc.core.measures.SizeUnit;
 import org.diylc.utils.Constants;
 
-public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComponent<T> implements
+public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComponent<T> {
-    IHaveLength {
 
   private static final long serialVersionUID = 1L;
   
@@ -335,12 +337,8 @@ public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComp
     // }
   }
   
-  @EditableProperty(name = "Length")
+  @EditableProperty
   public Size getLength() {
-    return calculateLength();
-  }
-
-  public Size calculateLength() {
     double d = 0;
       try {
       Point2D[] p = getControlPoints();

diylc/diylc-core/src/main/java/org/diylc/components/AbstractLabeledComponent.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/components/AbstractTransparentComponent.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/components/transform/DefaultTransformer.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/components/transform/LeadedComponentTransformer.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/components/transform/SimpleComponentTransformer.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/AllowAllValidator.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/ComponentForRender.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/ComponentGroup.java

@@ -1,43 +0,0 @@
-package org.diylc.core;
-
-import java.io.Serializable;
-import java.util.Collection;
-import java.util.List;
-import java.util.Set;
-import java.util.UUID;
-import java.util.stream.Collectors;
-
-public class ComponentGroup implements Serializable {
-
-  private Set<UUID> componentIds;
-  private String name;
-
-  public ComponentGroup(Set<UUID> componentIds) {
-    this.componentIds = componentIds;
-  }
-
-  public ComponentGroup(Set<UUID> componentIds, String name) {
-    this.componentIds = componentIds;
-    this.name = name;
-  }
-
-  public static ComponentGroup from(Collection<IDIYComponent<?>> components, String name) {
-    Set<UUID> componentIds = components.stream()
-        .map(IDIYComponent::getId)
-        .filter(id -> id != null)
-        .collect(Collectors.toSet());
-    return new ComponentGroup(componentIds, name);
-  }
-
-  public Set<UUID> getComponentIds() {
-    return componentIds;
-  }
-
-  public String getName() {
-    return name;
-  }
-
-  public void setName(String name) {
-    this.name = name;
-  }
-}

diylc/diylc-core/src/main/java/org/diylc/core/ComponentState.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/CreationMethod.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/ExpansionMode.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/ICommonNode.java

@@ -1,6 +1,6 @@
 /*
  * 
- * DIY Layout Creator (DIYLC). Copyright (c) 2009-2025 held jointly by the individual authors.
+ * DIY Layout Creator (DIYLC). Copyright (c) 2009-2018 held jointly by the individual authors.
  * 
  * This file is part of DIYLC.
  * 

diylc/diylc-core/src/main/java/org/diylc/core/IContinuity.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/IDIYComponent.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -25,7 +25,6 @@ import java.awt.Graphics2D;
 import java.awt.geom.Point2D;
 import java.awt.geom.Rectangle2D;
 import java.io.Serializable;
-import java.util.UUID;
 
 import org.diylc.core.annotations.ComponentDescriptor;
 import org.diylc.core.annotations.EditableProperty;
@@ -56,10 +55,6 @@ public interface IDIYComponent<T> extends Serializable, Cloneable {
   public static final int WIRING = 5;
   public static final int TEXT = 6;
 
-  UUID getId();
-
-  void setId(UUID id);
-
   /**
    * @return component instance name.
    */
@@ -204,13 +199,4 @@ public interface IDIYComponent<T> extends Serializable, Cloneable {
    * @param project
    */
   void createdIn(Project project);
-
-  /**
-   * Returns whether this component is polarized (direction matters for electronic function).
-   * Default implementation returns true, components that are not polarized should override this.
-   * @return true if the component is polarized, false otherwise
-   */
-  default boolean isPolarized() {
-    return true;
-  }
 }

diylc/diylc-core/src/main/java/org/diylc/core/IDatasheetSupport.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/IDrawingObserver.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/IDynamicPropertySource.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/IHaveLength.java

@@ -1,29 +0,0 @@
-/*
-
-    DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
-
-    This file is part of DIYLC.
-
-    DIYLC is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    DIYLC is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with DIYLC.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-package org.diylc.core;
-
-import org.diylc.core.measures.Size;
-
-public interface IHaveLength {
-
-  Size calculateLength();
-}

diylc/diylc-core/src/main/java/org/diylc/core/IPropertyValidator.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/ISwitch.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/IView.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/Project.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 
@@ -23,9 +23,13 @@ package org.diylc.core;
 
 import java.awt.Font;
 import java.io.Serializable;
-import java.util.*;
+import java.util.ArrayList;
-import java.util.stream.Collectors;
+import java.util.HashMap;
-
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 import org.diylc.appframework.update.VersionNumber;
 
 import org.diylc.core.annotations.EditableProperty;
@@ -63,7 +67,6 @@ public class Project implements Serializable, Cloneable {
   private Integer dotSpacing;
   private List<IDIYComponent<?>> components;
   private Set<Set<IDIYComponent<?>>> groups;
-  private Set<ComponentGroup> groupsEx;
   private Set<Integer> lockedLayers;
   private Set<IDIYComponent<?>> lockedComponents;
   private Set<Integer> hiddenLayers;
@@ -72,7 +75,6 @@ public class Project implements Serializable, Cloneable {
   public Project() {
     components = new ArrayList<IDIYComponent<?>>();
     groups = new HashSet<Set<IDIYComponent<?>>>();
-    groupsEx = new HashSet<>();
     lockedLayers = new HashSet<Integer>();
     hiddenLayers = new HashSet<Integer>();
     lockedComponents = new HashSet<IDIYComponent<?>>();
@@ -151,35 +153,22 @@ public class Project implements Serializable, Cloneable {
 
   /**
    * List of components sorted by z-order ascending.
-   * s
+   * 
    * @return
    */
   public List<IDIYComponent<?>> getComponents() {
     return components;
   }
 
-  public Set<ComponentGroup> getGroupsEx() {
+  /**
-    if (groupsEx == null) {
+   * Set of grouped components.
-      groupsEx = new HashSet<>();
+   * 
-
+   * @return
-      if (groups != null && !groups.isEmpty()) {
+   */
-        for (Set<IDIYComponent<?>> group : groups) {
+  public Set<Set<IDIYComponent<?>>> getGroups() {
-          Set<IDIYComponent<?>> nonNullIds =
+    return groups;
-              group.stream().filter(Objects::nonNull).collect(Collectors.toSet());
-          if (!nonNullIds.isEmpty()) {
-            ComponentGroup newGroup = ComponentGroup.from(group, null);
-            groupsEx.add(newGroup);
-          }
-        }
-        groups.clear();
-      }
-    }
-    groupsEx.removeAll(groupsEx.stream().
-        filter(x -> x.getComponentIds() == null ||
-          x.getComponentIds().stream().noneMatch(Objects::nonNull)).collect(Collectors.toSet()));
-    return groupsEx;
   }
-
+  
   public Set<IDIYComponent<?>> getLockedComponents() {
     if (lockedComponents == null)
       lockedComponents = new HashSet<IDIYComponent<?>>();
@@ -303,11 +292,6 @@ public class Project implements Serializable, Cloneable {
         return false;
     } else if (!groups.equals(other.groups))
       return false;
-    if (groupsEx == null) {
-      if (other.groupsEx != null)
-        return false;
-    } else if (!groupsEx.equals(other.groupsEx))
-      return false;
     if (lockedLayers == null) {
       if (other.lockedLayers != null)
         return false;
@@ -372,15 +356,12 @@ public class Project implements Serializable, Cloneable {
       }
     }
 
-    for (ComponentGroup group : this.getGroupsEx()) {
+    for (Set<IDIYComponent<?>> group : this.groups) {
-      // Filter out null IDs when cloning groups
+      Set<IDIYComponent<?>> cloneGroup = new HashSet<IDIYComponent<?>>();
-      Set<UUID> validIds = group.getComponentIds().stream()
+      for (IDIYComponent<?> component : group) {
-          .filter(id -> id != null)
+        cloneGroup.add(cloneMap.get(component));
-          .collect(Collectors.toSet());
-      // Only add group if it has valid component IDs
-      if (!validIds.isEmpty()) {
-        project.getGroupsEx().add(new ComponentGroup(validIds, group.getName()));
       }
+      project.groups.add(cloneGroup);
     }
     
     for (IDIYComponent<?> component : this.getLockedComponents()) {

diylc/diylc-core/src/main/java/org/diylc/core/Template.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/Theme.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/ValidationException.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/VisibilityPolicy.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/BomPolicy.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/ByteArrayProperty.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/ComponentDescriptor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/DynamicEditableProperty.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/DynamicList.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/EditableProperty.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/ElementLabel.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/IAutoCreator.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/KeywordPolicy.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/MultiLineText.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/PercentEditor.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/PositiveMeasureValidator.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/annotations/PositiveNonZeroMeasureValidator.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/gerber/GerberG2DWrapper.java

@@ -300,7 +300,7 @@ public class GerberG2DWrapper extends Graphics2D
 
   @Override
   public AffineTransform getTransform() {
-    return new AffineTransform(tx);
+    return tx;
   }
 
   @Override

diylc/diylc-core/src/main/java/org/diylc/core/images/IconLoader.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/AbstractMeasure.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/Capacitance.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/CapacitanceUnit.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/Current.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/CurrentUnit.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/Frequency.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/FrequencyUnit.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/Inductance.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/InductanceUnit.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.
 

diylc/diylc-core/src/main/java/org/diylc/core/measures/MeasureList.java

@@ -1,7 +1,7 @@
 /*
 
     DIY Layout Creator (DIYLC).
-    Copyright (c) 2009-2025 held jointly by the individual authors.
+    Copyright (c) 2009-2018 held jointly by the individual authors.
 
     This file is part of DIYLC.