Multi-layer PCB support

diy-layout-creator --username bancika@gmail.com/diylc-library/src/org/diylc/components/connectivity/CopperTrace.java

@@ -5,6 +5,7 @@ import java.awt.Graphics2D;
 import java.awt.Shape;
 
 import org.diylc.common.ObjectCache;
+import org.diylc.common.PCBLayer;
 import org.diylc.components.AbstractLeadedComponent;
 import org.diylc.core.ComponentState;
 import org.diylc.core.CreationMethod;
@@ -26,6 +27,7 @@ public class CopperTrace extends AbstractLeadedComponent<Void> {
 
 	private Color leadColor = COLOR;
 	private Size thickness = THICKNESS;
+	private PCBLayer layer = PCBLayer._1;
 
 	@Override
 	public void drawIcon(Graphics2D g2d, int width, int height) {
@@ -63,6 +65,18 @@ public class CopperTrace extends AbstractLeadedComponent<Void> {
 		this.thickness = thickness;
 	}
 	
+	@EditableProperty
+	public PCBLayer getLayer() {
+		if (layer == null) {
+			layer = PCBLayer._1;
+		}
+		return layer;
+	}
+	
+	public void setLayer(PCBLayer layer) {
+		this.layer = layer;
+	}
+
 	@Override
 	protected int getLeadThickness() {
 		return (int) getThickness().convertToPixels();

diy-layout-creator --username bancika@gmail.com/diylc-library/src/org/diylc/components/connectivity/CurvedTrace.java

@@ -5,6 +5,7 @@ import java.awt.Graphics2D;
 import java.awt.geom.CubicCurve2D;
 
 import org.diylc.common.ObjectCache;
+import org.diylc.common.PCBLayer;
 import org.diylc.components.AbstractCurvedComponent;
 import org.diylc.core.ComponentState;
 import org.diylc.core.IDIYComponent;
@@ -23,6 +24,7 @@ public class CurvedTrace extends AbstractCurvedComponent<Void> {
 	public static Size SIZE = new Size(1d, SizeUnit.mm);
 
 	protected Size size = SIZE;
+	private PCBLayer layer = PCBLayer._1;
 
 	@Override
 	protected Color getDefaultColor() {
@@ -47,6 +49,18 @@ public class CurvedTrace extends AbstractCurvedComponent<Void> {
 	public void setThickness(Size size) {
 		this.size = size;
 	}
+	
+	@EditableProperty
+	public PCBLayer getLayer() {
+		if (layer == null) {
+			layer = PCBLayer._1;
+		}
+		return layer;
+	}
+	
+	public void setLayer(PCBLayer layer) {
+		this.layer = layer;
+	}
 
 	@Override
 	public Void getValue() {

diy-layout-creator --username bancika@gmail.com/diylc-library/src/org/diylc/components/connectivity/GroundFill.java

@@ -6,6 +6,7 @@ import java.awt.Point;
 import java.util.Arrays;
 
 import org.diylc.common.ObjectCache;
+import org.diylc.common.PCBLayer;
 import org.diylc.components.AbstractComponent;
 import org.diylc.core.ComponentState;
 import org.diylc.core.IDIYComponent;
@@ -36,6 +37,7 @@ public class GroundFill extends AbstractComponent<Void> {
 
 	protected Color color = COLOR;
 	protected PointCount pointCount = PointCount._4;
+	private PCBLayer layer = PCBLayer._1;
 
 	@Override
 	public void draw(Graphics2D g2d, ComponentState componentState,
@@ -113,6 +115,19 @@ public class GroundFill extends AbstractComponent<Void> {
 		}
 		this.pointCount = pointCount;
 	}
+	
+	@EditableProperty
+	public PCBLayer getLayer() {
+		if (layer == null) {
+			layer = PCBLayer._1;
+		}
+		return layer;
+	}
+	
+	public void setLayer(PCBLayer layer) {
+		this.layer = layer;
+	}
+
 
 	@Deprecated
 	@Override

diy-layout-creator --username bancika@gmail.com/diylc-library/src/org/diylc/components/connectivity/SolderPad.java

@@ -4,6 +4,7 @@ import java.awt.Color;
 import java.awt.Graphics2D;
 import java.awt.Point;
 
+import org.diylc.common.PCBLayer;
 import org.diylc.components.AbstractComponent;
 import org.diylc.core.ComponentState;
 import org.diylc.core.IDIYComponent;
@@ -31,6 +32,7 @@ public class SolderPad extends AbstractComponent<Void> {
 	private Point point = new Point(0, 0);
 	private Type type = Type.ROUND;
 	private Size holeSize = HOLE_SIZE;
+	private PCBLayer layer = PCBLayer._1;
 
 	@Override
 	public void draw(Graphics2D g2d, ComponentState componentState, boolean outlineMode,
@@ -83,6 +85,18 @@ public class SolderPad extends AbstractComponent<Void> {
 	public void setHoleSize(Size holeSize) {
 		this.holeSize = holeSize;
 	}
+	
+	@EditableProperty
+	public PCBLayer getLayer() {
+		if (layer == null) {
+			layer = PCBLayer._1;
+		}
+		return layer;
+	}
+	
+	public void setLayer(PCBLayer layer) {
+		this.layer = layer;
+	}
 
 	@Override
 	public String getName() {