Traces, curved traces, ground fills, solder pads and PCB text call their layer 'Board Side', like every other part, and count as Board Side components in code; the saved field is still 'layer'

diylc/diylc-library/src/main/java/org/diylc/components/connectivity/CopperTrace.java

@@ -52,7 +52,7 @@ import org.diylc.core.measures.Size;
 import org.diylc.core.measures.SizeUnit;
 
 @AiNote(value = "Use for copper on PCB layouts; for a wire link use Jumper or Hookup Wire", scope = Scope.SELECTION)
-@AiNote("A single straight segment on the copper side chosen by 'Layer'; chain segments end to end for bends, or use Curved Trace")
+@AiNote("A single straight segment on the copper side chosen by 'Board Side'; chain segments end to end for bends, or use Curved Trace")
 @AiNote("The whole length is copper: any terminal or copper on the same layer that it touches or crosses is connected, not just its ends, so traces of different nets must not cross")
 @ComponentDescriptor(name = "Copper Trace", author = "Branislav Stojkovic", category = "Connectivity",
     creationMethod = CreationMethod.POINT_BY_POINT, instanceNamePrefix = "Trace",
@@ -117,7 +117,7 @@ public class CopperTrace extends AbstractLeadedComponent<Void>
     this.thickness = thickness;
   }
 
-  @EditableProperty
+  @EditableProperty(name = "Board Side")
   @Override
   public PCBLayer getLayer() {
     if (layer == null) {

diylc/diylc-library/src/main/java/org/diylc/components/connectivity/CurvedTrace.java

@@ -105,7 +105,7 @@ public class CurvedTrace extends AbstractCurvedComponent<Void>
     this.size = size;
   }
 
-  @EditableProperty
+  @EditableProperty(name = "Board Side")
   @Override
   public PCBLayer getLayer() {
     if (layer == null) {

diylc/diylc-library/src/main/java/org/diylc/components/connectivity/GroundFill.java

@@ -152,7 +152,7 @@ public class GroundFill extends AbstractTransparentComponent<Void>
     this.pointCount = pointCount;
   }
 
-  @EditableProperty
+  @EditableProperty(name = "Board Side")
   @Override
   public PCBLayer getLayer() {
     if (layer == null) {

diylc/diylc-library/src/main/java/org/diylc/components/connectivity/SolderPad.java

@@ -190,7 +190,7 @@ public class SolderPad extends AbstractTransparentComponent<Void>
     this.holeSize = holeSize;
   }
 
-  @EditableProperty
+  @EditableProperty(name = "Board Side")
   @Override
   public PCBLayer getLayer() {
     if (layer == null) {

diylc/diylc-library/src/main/java/org/diylc/components/misc/PCBText.java

@@ -325,7 +325,7 @@ public class PCBText extends AbstractComponent<Void>
     this.horizontalAlignment = alignment;
   }
   
-  @EditableProperty
+  @EditableProperty(name = "Board Side")
   @Override
   public PCBLayer getLayer() {
     if (layer == null) {

diylc/diylc-library/src/test/java/org/diylc/components/BoardSideComponentsTest.java

@@ -29,9 +29,11 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.diylc.common.PCBLayer;
+import org.diylc.components.connectivity.CopperTrace;
 import org.diylc.components.misc.Label;
 import org.diylc.core.IBoardSideComponent;
 import org.diylc.core.IDIYComponent;
+import org.diylc.core.IPCBLayerComponent;
 import org.diylc.core.gerber.GerberLayer;
 import org.diylc.core.gerber.IGerberComponentSimple;
 import org.diylc.utils.ReflectionUtils;
@@ -73,10 +75,26 @@ public class BoardSideComponentsTest {
     }
   }
 
+  // copper starts on the bottom, where single-sided boards carry it
+  @Test
+  public void testCopperBoardSideIsItsLayer() {
+    CopperTrace trace = new CopperTrace();
+    assertEquals(PCBLayer._1, trace.getBoardSide());
+
+    trace.setBoardSide(PCBLayer._2);
+    assertEquals(PCBLayer._2, trace.getLayer());
+
+    // the deprecated inner layers are inside the board, which counts as the bottom
+    trace.setLayer(PCBLayer._3);
+    assertEquals(PCBLayer._1, trace.getBoardSide());
+  }
+
+  // parts, which start on top; copper starts on the bottom and is covered above
   private static List<IDIYComponent<?>> createBoardSideComponents() throws Exception {
     List<IDIYComponent<?>> components = new ArrayList<IDIYComponent<?>>();
     for (Class<?> type : ReflectionUtils.getIndexedClasses(IDIYComponent.class)) {
       if (IBoardSideComponent.class.isAssignableFrom(type)
+          && !IPCBLayerComponent.class.isAssignableFrom(type)
           && !Modifier.isAbstract(type.getModifiers())) {
         components.add((IDIYComponent<?>) type.getDeclaredConstructor().newInstance());
       }

diylc/diylc-library/src/test/java/org/diylc/plugins/chatbot/service/ComponentCatalogGeneratorTest.java

@@ -98,7 +98,7 @@ public class ComponentCatalogGeneratorTest {
     assertTrue("a switch carries its switching table", variants.get(0).containsKey("switching"));
 
     // the deprecated inner layers are kept only so that old files load
-    Map<String, Object> layer = findProperty(find(components, "connectivity.CopperTrace"), "Layer");
+    Map<String, Object> layer = findProperty(find(components, "connectivity.CopperTrace"), "Board Side");
     assertEquals(List.of("_1", "_2"), layer.get("possibleValues"));
   }