Fixed getTitleBarHeight method.

Uninstall decorations when window is disposed.

core/src/main/java/com/github/weisj/darklaf/LafManager.java

@@ -193,28 +193,8 @@ public final class LafManager {
         }
         SwingUtilities.updateComponentTreeUI(window);
         //  Use custom decorations when supported by the LAF
-        if (window instanceof JFrame) {
-            JFrame frame = (JFrame) window;
-            frame.dispose();
-            if (UIManager.getLookAndFeel().getSupportsWindowDecorations()) {
-                frame.setUndecorated(true);
-                frame.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
-            } else {
-                frame.setUndecorated(false);
-            }
-            frame.setVisible(true);
-        } else if (window instanceof JDialog) {
-            JDialog dialog = (JDialog) window;
-            boolean isVisible = dialog.isVisible();
-            dialog.dispose();
-            if (UIManager.getLookAndFeel().getSupportsWindowDecorations()) {
-                dialog.setUndecorated(true);
-                dialog.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
-            } else {
-                dialog.setUndecorated(false);
-            }
-            dialog.setVisible(isVisible);
-        }
+        window.dispose();
+        window.setVisible(true);
     }
 
     /**

core/src/main/java/com/github/weisj/darklaf/ui/rootpane/DarkRootPaneUI.java

@@ -34,6 +34,8 @@ import javax.swing.plaf.basic.BasicRootPaneUI;
 import java.awt.*;
 import java.awt.event.HierarchyEvent;
 import java.awt.event.HierarchyListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
 import java.beans.PropertyChangeEvent;
 
 
@@ -48,6 +50,7 @@ public class DarkRootPaneUI extends BasicRootPaneUI implements HierarchyListener
     private LayoutManager layoutManager;
     private LayoutManager oldLayout;
     private JRootPane rootPane;
+    private DisposeListener disposeListener = new DisposeListener();
 
     private boolean decorationStyleLock = false;
     private int windowDecorationsStyle = -1;
@@ -110,6 +113,7 @@ public class DarkRootPaneUI extends BasicRootPaneUI implements HierarchyListener
         }
         if (window != null) {
             window.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
+            window.removeWindowListener(disposeListener);
         }
         window = null;
     }
@@ -159,7 +163,9 @@ public class DarkRootPaneUI extends BasicRootPaneUI implements HierarchyListener
     }
 
     private void updateWindow(final Component parent) {
+        if (window != null) window.removeWindowListener(disposeListener);
         window = DarkUIUtil.getWindow(parent);
+        if (window != null) window.addWindowListener(disposeListener);
     }
 
     private void installLayout(final JRootPane root) {
@@ -225,4 +231,11 @@ public class DarkRootPaneUI extends BasicRootPaneUI implements HierarchyListener
             installClientDecorations(rootPane);
         }
     }
+
+    protected class DisposeListener extends WindowAdapter {
+        @Override
+        public void windowClosing(final WindowEvent e) {
+            uninstallClientDecorations(rootPane);
+        }
+    }
 }

macos/src/main/objectiveCpp/JNIDecorations.mm

@@ -67,9 +67,10 @@ Java_com_github_weisj_darklaf_platform_macos_JNIDecorationsMacOS_releaseWindow(J
 JNIEXPORT jdouble JNICALL
 Java_com_github_weisj_darklaf_platform_macos_JNIDecorationsMacOS_getTitleBarHeight(JNIEnv *env, jclass obj, jlong hwnd) {
      NSWindow *nsWindow = OBJC(hwnd);
-     CGFloat windowFrameHeight = nsWindow.contentView.frame.size.height;
-     CGFloat contentLayoutRectHeight  = nsWindow.contentLayoutRect.size.height;
-     return (jdouble)(windowFrameHeight - contentLayoutRectHeight);
+     NSRect frame = NSMakeRect(0.0, 0.0, 100.0, 100.0);
+     NSUInteger windowStyle = nsWindow.styleMask & ~NSWindowStyleMaskFullSizeContentView;
+     NSRect rect = [NSWindow contentRectForFrameRect:frame styleMask:windowStyle];
+     return (jdouble)(frame.size.height - rect.size.height);
 }
 
 JNIEXPORT jboolean JNICALL