Cannot edit "Hookup Wire" properties when opening existing files

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

@@ -26,6 +26,7 @@ import java.awt.geom.CubicCurve2D;
 import java.awt.geom.Path2D;
 import java.awt.geom.Point2D;
 
+import org.apache.log4j.Logger;
 import org.diylc.appframework.miscutils.ConfigurationManager;
 import org.diylc.common.IPlugInPort;
 import org.diylc.common.LineStyle;
@@ -43,6 +44,8 @@ public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComp
 
   private static final long serialVersionUID = 1L;
   
+  private static final Logger LOG = Logger.getLogger(AbstractCurvedComponent.class);
+
   public static Color GUIDELINE_COLOR = Color.blue;
   public static Size DEFAULT_SIZE = new Size(1d, SizeUnit.in);
 
@@ -328,6 +331,7 @@ public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComp
   @EditableProperty
   public Size getLength() {
     double d = 0;
+      try {
       Point[] p = getControlPoints();
       if (getPointCount() == PointCount.TWO) {
         d = p[0].distance(p[1]);
@@ -349,6 +353,10 @@ public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComp
       
       d = d * SizeUnit.px.getFactor() / unit.getFactor();    
       return new Size(d, unit);
+    } catch (Exception e) {
+      LOG.error("Error calculating length of " + getName(), e);
+      return null;
+    }
   }
 
   public enum PointCount {
@@ -391,12 +399,17 @@ public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComp
         / (8 * Math.pow(uu, 1.5)));
   }
   
-  private double curveThreshold = 10;
+  // do not use this property
+  @Deprecated
+  private double curveThreshold;
+  
+  // tweak this value if needed
+  private static final double curveDivisionThreshold = 5d;
    
   // approximately calculate length of Bezier curves by subdivision
   private double calculateLength(Point2D a, Point2D b, Point2D c, Point2D d) {
     double distance = a.distance(d);
-    if (distance < curveThreshold)
+    if (distance < curveDivisionThreshold)
       return distance;
     CubicCurve2D curve = new CubicCurve2D.Double(a.getX(), a.getY(), b.getX(), b.getY(), c.getX(), c.getY(), d.getX(), d.getY());
     CubicCurve2D left = new CubicCurve2D.Double();

diylc/diylc-core/src/org/diylc/presenter/ProjectFileManager.java

@@ -233,6 +233,7 @@ public class ProjectFileManager {
       project = (Project) xStreamOld.fromXML(fis);
     }
     if (!missingFields.isEmpty()) {
+      LOG.warn("The opened file is missing the following properties: " + String.join(", ", missingFields));
       warnings.add("The project references unknown component properties, most likely because it was created with a newer version of DIYLC.");
     }
     fis.close();

diylc/diylc-core/src/org/diylc/presenter/update.xml

@@ -2800,11 +2800,11 @@
 				</org.diylc.appframework.update.Change>	
 				<org.diylc.appframework.update.Change>
 					<changeType>IMPROVEMENT</changeType>
-					<description>Refactor dependencies to internal Java classes that are market as proprietary (could potentially affect "Hi-Quality Rendering" mode and loading older DIY files that contain images)</description>
+					<description>Refactor dependencies to internal Java classes that are market as proprietary in Java 8 (could potentially affect "Hi-Quality Rendering" mode and loading older DIY files that contain images)</description>
 				</org.diylc.appframework.update.Change>	
 				<org.diylc.appframework.update.Change>
 					<changeType>BUG_FIX</changeType>
-					<description>Fix "Ohm" symbol rendering issue with some fonts.</description>
+					<description>Fix "Ohm" symbol rendering issue with some fonts by switching to the regular Omega character instead of the dedicated Ohm symbol that is absent in most fonts</description>
 				</org.diylc.appframework.update.Change>				
 				<org.diylc.appframework.update.Change>
 					<changeType>BUG_FIX</changeType>
@@ -2830,6 +2830,10 @@
 					<changeType>BUG_FIX</changeType>
 					<description>Minor fix in tracking conductive areas</description>
 				</org.diylc.appframework.update.Change>	
+				<org.diylc.appframework.update.Change>
+					<changeType>BUG_FIX</changeType>
+					<description>Cannot edit "Hookup Wire" properties when opening existing files</description>
+				</org.diylc.appframework.update.Change>	
 			</changes>
 			<url>https://github.com/bancika/diy-layout-creator/releases</url>
 		</org.diylc.appframework.update.Version>