Fixed NPE when accessing evt.getNewValue() on properChange-Events.

Signed-off-by: weisj <weisj@arcor.de>

core/src/main/java/com/github/weisj/darklaf/ui/table/DarkTableUI.java

@@ -51,10 +51,10 @@ public class DarkTableUI extends DarkTableUIBridge {
     private final PropertyChangeListener propertyChangeListener = e -> {
         String key = e.getPropertyName();
         if ("showHorizontalLines".equals(key)) {
-            boolean b = (boolean) e.getNewValue();
+            boolean b = Boolean.TRUE.equals(e.getNewValue());
             table.setRowMargin(b ? 1 : 0);
         } else if ("showVerticalLines".equals(key)) {
-            boolean b = (boolean) e.getNewValue();
+            boolean b = Boolean.TRUE.equals(e.getNewValue());
             table.getColumnModel().setColumnMargin(b ? 1 : 0);
         } else if ("ancestor".equals(key)) {
             Object oldVal = e.getOldValue();

macos/src/main/java/com/github/weisj/darklaf/platform/macos/ui/MacOSTitlePane.java

@@ -243,7 +243,7 @@ public class MacOSTitlePane extends CustomTitlePane {
         public void propertyChange(final PropertyChangeEvent pce) {
             String name = pce.getPropertyName();
             if ("title".equals(name)) {
-                titleLabel.setText(pce.getNewValue().toString());
+                titleLabel.setText(pce.getNewValue() == null ? "" : pce.getNewValue().toString());
                 repaint();
             }
         }

windows/src/main/java/com/github/weisj/darklaf/platform/windows/ui/WindowsTitlePane.java

@@ -771,7 +771,7 @@ public class WindowsTitlePane extends CustomTitlePane {
                     getRootPane().repaint();
                 }
             } else if ("title".equals(name)) {
-                titleLabel.setText(pce.getNewValue().toString());
+                titleLabel.setText(pce.getNewValue() == null ? "" : pce.getNewValue().toString());
                 repaint();
             } else if ("componentOrientation".equals(name)) {
                 revalidate();
@@ -782,6 +782,7 @@ public class WindowsTitlePane extends CustomTitlePane {
                 repaint();
             } else if ("background".equals(name) && pce.getNewValue() instanceof Color) {
                 Color color = (Color) pce.getNewValue();
+                if (color == null) return;
                 JNIDecorationsWindows.setBackground(windowHandle, color.getRed(), color.getGreen(), color.getBlue());
             }
         }