release 1.1.2

Added option for downscaling

.github/workflows/natives.yml

@@ -41,7 +41,9 @@ jobs:
             - name: Cache Gradle cache
               uses: actions/cache@v2
               with:
-                  path: ~/.gradle/caches
+                  path: |
+                    ~/.gradle/caches
+                    !~/.gradle/caches/modules-2/modules-2.lock
                   key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle.kts') }}
                   restore-keys: ${{ runner.os }}-gradle
 

CHANGELOG.md

@@ -1,6 +1,68 @@
 FlatLaf Change Log
 ==================
 
+## 1.1.2
+
+#### New features and improvements
+
+- Native window decorations: Added API to check whether current platform
+  supports window decorations (`FlatLaf.supportsNativeWindowDecorations()`) and
+  to toggle window decorations of all windows
+  (`FlatLaf.setUseNativeWindowDecorations(boolean)`).
+- Native window decorations: Support changing title bar background and
+  foreground colors per window. (set client properties
+  `JRootPane.titleBarBackground` and `JRootPane.titleBarForeground` on root pane
+  to a `java.awt.Color`).
+
+#### Fixed bugs
+
+- Native window decorations: Fixed loading of native library when using Java
+  Platform Module System (JPMS) for application. (issue #289)
+- Native window decorations: Removed superfluous pixel-line at top of screen
+  when window is maximized. (issue #296)
+- Window decorations: Fixed random window title bar background in cases were
+  background is not filled by custom window or root pane components and unified
+  background is enabled.
+- IntelliJ Themes: Fixed window title bar background if unified background is
+  enabled.
+- IntelliJ Themes: Fixed system colors.
+- Button and ToggleButton: Do not paint background of disabled (and unselected)
+  toolBar buttons. (issue #292; regression since fixing #112)
+- ComboBox and Spinner: Fixed too wide arrow button if component is higher than
+  preferred. (issue #302)
+- SplitPane: `JSplitPane.setContinuousLayout(false)` did not work. (issue #301)
+- TabbedPane: Fixed NPE when creating/modifying in another thread. (issue #299)
+- Fixed crash when running in Webswing. (issue #290)
+
+
+## 1.1.1
+
+#### New features and improvements
+
+- Native window decorations: Support disabling native window decorations per
+  window. (set client property `JRootPane.useWindowDecorations` on root pane to
+  `false`).
+- Support running on WinPE. (issue #279)
+
+#### Fixed bugs
+
+- Native window decorations: Fixed missing animations when minimizing,
+  maximizing or restoring a window using window title bar buttons. (issue #282)
+- Native window decorations: Fixed broken maximizing window when restoring frame
+  state at startup. (issue #283)
+- Native window decorations: Fixed double window title bar when first disposing
+  a window with `frame.dispose()` and then showing it again with
+  `frame.setVisible(true)`. (issue #277)
+- Custom window decorations: Fixed NPE in `FlatTitlePane.findHorizontalGlue()`.
+  (issue #275)
+- Custom window decorations: Fixed right aligned progress bar in embedded menu
+  bar was overlapping window title. (issue #272)
+- Fixed missing focus indicators in heavy-weight popups. (issue #273)
+- InternalFrame: Fixed translucent internal frame menu bar background if
+  `TitlePane.unifiedBackground` is `true`. (issue #274)
+- Extras: UI Inspector: Fixed `InaccessibleObjectException` when running in Java 16.
+
+
 ## 1.1
 
 #### New features and improvements

README.md

@@ -104,6 +104,7 @@ Buzz
 ----
 
 - [What others say about FlatLaf on Twitter](https://twitter.com/search?f=live&q=flatlaf)
+- [FlatLaf 1.0 announcement on Reddit](https://www.reddit.com/r/java/comments/lsbcwe/flatlaf_10_swing_look_and_feel/)
 - [FlatLaf announcement on Reddit](https://www.reddit.com/r/java/comments/dl0hu3/flatlaf_flat_look_and_feel/)
 
 

build.gradle.kts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-val releaseVersion = "1.1"
+val releaseVersion = "1.1.2"
 val developmentVersion = "1.2-SNAPSHOT"
 
 version = if( java.lang.Boolean.getBoolean( "release" ) ) releaseVersion else developmentVersion

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatClientProperties.java

@@ -232,14 +232,63 @@ public interface FlatClientProperties
 	//---- JRootPane ----------------------------------------------------------
 
 	/**
-	 * Specifies whether the menu bar is embedded into the title pane if custom
-	 * window decorations are enabled. Default is {@code true}.
+	 * Specifies whether FlatLaf native window decorations should be used
+	 * for {@code JFrame} or {@code JDialog}.
+	 * <p>
+	 * Setting this enables/disables using FlatLaf native window decorations
+	 * for the window that contains the root pane.
+	 * <p>
+	 * This client property has lower priority than system property
+	 * {@link FlatSystemProperties#USE_WINDOW_DECORATIONS}, but higher priority
+	 * than UI default {@code TitlePane.useWindowDecorations}.
+	 * <p>
+	 * (requires Window 10)
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 *
+	 * @since 1.1.1
+	 */
+	String USE_WINDOW_DECORATIONS = "JRootPane.useWindowDecorations";
+
+	/**
+	 * Specifies whether the menu bar is embedded into the window title pane
+	 * if window decorations are enabled.
+	 * <p>
+	 * Setting this enables/disables embedding
+	 * for the window that contains the root pane.
+	 * <p>
+	 * This client property has lower priority than system property
+	 * {@link FlatSystemProperties#MENUBAR_EMBEDDED}, but higher priority
+	 * than UI default {@code TitlePane.menuBarEmbedded}.
+	 * <p>
+	 * (requires Window 10)
 	 * <p>
 	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
 	 * <strong>Value type</strong> {@link java.lang.Boolean}
 	 */
 	String MENU_BAR_EMBEDDED = "JRootPane.menuBarEmbedded";
 
+	/**
+	 * Background color of window title bar (requires enabled window decorations).
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
+	 * <strong>Value type</strong> {@link java.awt.Color}
+	 *
+	 * @since 1.1.2
+	 */
+	String TITLE_BAR_BACKGROUND = "JRootPane.titleBarBackground";
+
+	/**
+	 * Foreground color of window title bar (requires enabled window decorations).
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
+	 * <strong>Value type</strong> {@link java.awt.Color}
+	 *
+	 * @since 1.1.2
+	 */
+	String TITLE_BAR_FOREGROUND = "JRootPane.titleBarForeground";
+
 	//---- JScrollBar / JScrollPane -------------------------------------------
 
 	/**

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java

@@ -46,6 +46,7 @@ import javax.swing.JDialog;
 import javax.swing.JFrame;
 import javax.swing.LookAndFeel;
 import javax.swing.PopupFactory;
+import javax.swing.RootPaneContainer;
 import javax.swing.SwingUtilities;
 import javax.swing.UIDefaults;
 import javax.swing.UIDefaults.ActiveValue;
@@ -59,6 +60,7 @@ import javax.swing.text.StyleContext;
 import javax.swing.text.html.HTMLEditorKit;
 import com.formdev.flatlaf.ui.FlatNativeWindowBorder;
 import com.formdev.flatlaf.ui.FlatPopupFactory;
+import com.formdev.flatlaf.ui.FlatRootPaneUI;
 import com.formdev.flatlaf.util.GrayFilter;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.MultiResolutionImageSupport;
@@ -157,7 +159,7 @@ public abstract class FlatLaf
 	 */
 	@Override
 	public boolean getSupportsWindowDecorations() {
-		if( SystemInfo.isProjector )
+		if( SystemInfo.isProjector || SystemInfo.isWebswing || SystemInfo.isWinPE )
 			return false;
 
 		if( SystemInfo.isWindows_10_orLater &&
@@ -377,6 +379,12 @@ public abstract class FlatLaf
 		initIconColors( defaults, isDark() );
 		FlatInputMaps.initInputMaps( defaults );
 
+		// copy InternalFrame.icon (the Java cup) to TitlePane.icon
+		// (using defaults.remove() to avoid that lazy value is resolved and icon loaded here)
+		Object icon = defaults.remove( "InternalFrame.icon" );
+		defaults.put( "InternalFrame.icon", icon );
+		defaults.put( "TitlePane.icon", icon );
+
 		// get addons and sort them by priority
 		ServiceLoader<FlatDefaultsAddon> addonLoader = ServiceLoader.load( FlatDefaultsAddon.class );
 		List<FlatDefaultsAddon> addons = new ArrayList<>();
@@ -438,8 +446,16 @@ public abstract class FlatLaf
 
 		if( SystemInfo.isWindows ) {
 			Font winFont = (Font) Toolkit.getDefaultToolkit().getDesktopProperty( "win.messagebox.font" );
-			if( winFont != null )
-				uiFont = createCompositeFont( winFont.getFamily(), winFont.getStyle(), winFont.getSize() );
+			if( winFont != null ) {
+				if( SystemInfo.isWinPE ) {
+					// on WinPE use "win.defaultGUI.font", which is usually Tahoma,
+					// because Segoe UI font is not available on WinPE
+					Font winPEFont = (Font) Toolkit.getDefaultToolkit().getDesktopProperty( "win.defaultGUI.font" );
+					if( winPEFont != null )
+						uiFont = createCompositeFont( winPEFont.getFamily(), winPEFont.getStyle(), winFont.getSize() );
+				} else
+					uiFont = createCompositeFont( winFont.getFamily(), winFont.getStyle(), winFont.getSize() );
+			}
 
 		} else if( SystemInfo.isMacOS ) {
 			String fontName;
@@ -701,6 +717,79 @@ public abstract class FlatLaf
 		} );
 	}
 
+	/**
+	 * Returns whether native window decorations are supported on current platform.
+	 * <p>
+	 * This requires Windows 10, but may be disabled if running in special environments
+	 * (JetBrains Projector, Webswing or WinPE) or if loading native library fails.
+	 * If system property {@link FlatSystemProperties#USE_WINDOW_DECORATIONS} is set to
+	 * {@code false}, then this method also returns {@code false}.
+	 *
+	 * @since 1.1.2
+	 */
+	public static boolean supportsNativeWindowDecorations() {
+		return SystemInfo.isWindows_10_orLater && FlatNativeWindowBorder.isSupported();
+	}
+
+	/**
+	 * Returns whether native window decorations are enabled.
+	 *
+	 * @since 1.1.2
+	 */
+	public static boolean isUseNativeWindowDecorations() {
+		return UIManager.getBoolean( "TitlePane.useWindowDecorations" );
+	}
+
+	/**
+	 * Sets whether native window decorations are enabled.
+	 * <p>
+	 * Existing frames and dialogs will be updated.
+	 *
+	 * @since 1.1.2
+	 */
+	public static void setUseNativeWindowDecorations( boolean enabled ) {
+		UIManager.put( "TitlePane.useWindowDecorations", enabled );
+
+		if( !(UIManager.getLookAndFeel() instanceof FlatLaf) )
+			return;
+
+		// update existing frames and dialogs
+		for( Window w : Window.getWindows() ) {
+			if( isDisplayableFrameOrDialog( w ) )
+				FlatRootPaneUI.updateNativeWindowBorder( ((RootPaneContainer)w).getRootPane() );
+		}
+	}
+
+	/**
+	 * Revalidate and repaint all displayable frames and dialogs.
+	 *
+	 * @since 1.1.2
+	 */
+	public static void revalidateAndRepaintAllFramesAndDialogs() {
+		for( Window w : Window.getWindows() ) {
+			if( isDisplayableFrameOrDialog( w ) ) {
+				w.revalidate();
+				w.repaint();
+			}
+		}
+	}
+
+	/**
+	 * Repaint all displayable frames and dialogs.
+	 *
+	 * @since 1.1.2
+	 */
+	public static void repaintAllFramesAndDialogs() {
+		for( Window w : Window.getWindows() ) {
+			if( isDisplayableFrameOrDialog( w ) )
+				w.repaint();
+		}
+	}
+
+	private static boolean isDisplayableFrameOrDialog( Window w ) {
+		return w.isDisplayable() && (w instanceof JFrame || w instanceof JDialog);
+	}
+
 	public static boolean isShowMnemonics() {
 		return MnemonicHandler.isShowMnemonics();
 	}
@@ -744,6 +833,10 @@ public abstract class FlatLaf
 		public Object createValue( UIDefaults table ) {
 			Font defaultFont = UIManager.getFont( "defaultFont" );
 
+			// fallback (to avoid NPE in case that this is used in another Laf)
+			if( defaultFont == null )
+				defaultFont = UIManager.getFont( "Label.font" );
+
 			if( lastDefaultFont != defaultFont ) {
 				lastDefaultFont = defaultFont;
 

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatSystemProperties.java

@@ -16,6 +16,8 @@
 
 package com.formdev.flatlaf;
 
+import com.formdev.flatlaf.util.UIScale;
+
 /**
  * Defines/documents own system properties used in FlatLaf.
  *
@@ -32,6 +34,8 @@ public interface FlatSystemProperties
 	 * To replace the Java 9+ system scale factor, use system property "sun.java2d.uiScale",
 	 * which has the same syntax as this one.
 	 * <p>
+	 * Since FlatLaf 1.1.2: Scale factors less then 100% are allowed.
+	 * <p>
 	 * <strong>Allowed Values</strong> e.g. {@code 1.5}, {@code 1.5x}, {@code 150%} or {@code 144dpi} (96dpi is 100%)<br>
 	 */
 	String UI_SCALE = "flatlaf.uiScale";
@@ -44,6 +48,17 @@ public interface FlatSystemProperties
 	 */
 	String UI_SCALE_ENABLED = "flatlaf.uiScale.enabled";
 
+	/**
+	 * Specifies whether values smaller than 100% are allowed for the user scale factor
+	 * (see {@link UIScale#getUserScaleFactor()}).
+	 * <p>
+	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
+	 * <strong>Default</strong> {@code false}
+	 *
+	 * @since 1.1.2
+	 */
+	String UI_SCALE_ALLOW_SCALE_DOWN = "flatlaf.uiScale.allowScaleDown";
+
 	/**
 	 * Specifies whether Ubuntu font should be used on Ubuntu Linux.
 	 * By default, if not running in a JetBrains Runtime, the Liberation Sans font
@@ -55,13 +70,16 @@ public interface FlatSystemProperties
 	String USE_UBUNTU_FONT = "flatlaf.useUbuntuFont";
 
 	/**
-	 * Specifies whether FlatLaf native window decorations should be used
+	 * Specifies whether native window decorations should be used
 	 * when creating {@code JFrame} or {@code JDialog}.
 	 * <p>
-	 * Setting this to {@code true} forces using FlatLaf native window decorations
-	 * even if they are not enabled by the application.
+	 * Setting this to {@code true} forces using native window decorations
+	 * even if they are not enabled by the application.<br>
+	 * Setting this to {@code false} disables using native window decorations.
 	 * <p>
-	 * Setting this to {@code false} disables using FlatLaf native window decorations.
+	 * This system property has higher priority than client property
+	 * {@link FlatClientProperties#USE_WINDOW_DECORATIONS} and
+	 * UI default {@code TitlePane.useWindowDecorations}.
 	 * <p>
 	 * (requires Window 10)
 	 * <p>
@@ -77,26 +95,32 @@ public interface FlatSystemProperties
 	 * <a href="https://confluence.jetbrains.com/display/JBR/JetBrains+Runtime">JetBrains Runtime</a>
 	 * (based on OpenJDK).
 	 * <p>
-	 * Setting this to {@code true} forces using JetBrains Runtime custom window decorations
-	 * even if they are not enabled by the application.
-	 * <p>
 	 * Setting this to {@code false} disables using JetBrains Runtime custom window decorations.
+	 * Then FlatLaf native window decorations are used.
+	 * <p>
+	 * (requires Window 10)
+	 * <p>
+	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
+	 * <strong>Default</strong> true
+	 */
+	String USE_JETBRAINS_CUSTOM_DECORATIONS = "flatlaf.useJetBrainsCustomDecorations";
+
+	/**
+	 * Specifies whether the menu bar is embedded into the window title pane
+	 * if window decorations are enabled.
+	 * <p>
+	 * Setting this to {@code true} forces embedding.<br>
+	 * Setting this to {@code false} disables embedding.
+	 * <p>
+	 * This system property has higher priority than client property
+	 * {@link FlatClientProperties#MENU_BAR_EMBEDDED} and
+	 * UI default {@code TitlePane.menuBarEmbedded}.
 	 * <p>
 	 * (requires Window 10)
 	 * <p>
 	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
 	 * <strong>Default</strong> none
 	 */
-	String USE_JETBRAINS_CUSTOM_DECORATIONS = "flatlaf.useJetBrainsCustomDecorations";
-
-	/**
-	 * Specifies whether menubar is embedded into custom window decorations.
-	 * <p>
-	 * (requires Window 10)
-	 * <p>
-	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
-	 * <strong>Default</strong> {@code true}
-	 */
 	String MENUBAR_EMBEDDED = "flatlaf.menuBarEmbedded";
 
 	/**

flatlaf-core/src/main/java/com/formdev/flatlaf/MnemonicHandler.java

@@ -28,6 +28,7 @@ import java.awt.event.WindowEvent;
 import java.awt.event.WindowListener;
 import java.lang.ref.WeakReference;
 import javax.swing.AbstractButton;
+import javax.swing.JDialog;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
 import javax.swing.JMenu;
@@ -137,10 +138,17 @@ class MnemonicHandler
 					// get menu bar and first menu
 					Component c = e.getComponent();
 					JRootPane rootPane = SwingUtilities.getRootPane( c );
-					Window window = (rootPane != null) ? SwingUtilities.getWindowAncestor( rootPane ) : null;
 					JMenuBar menuBar = (rootPane != null) ? rootPane.getJMenuBar() : null;
-					if( menuBar == null && window instanceof JFrame )
-						menuBar = ((JFrame)window).getJMenuBar();
+					if( menuBar == null ) {
+						// get menu bar from frame/dialog because there
+						// may be multiple nested root panes in a frame/dialog
+						// (e.g. each internal frame has its own root pane)
+						Window window = SwingUtilities.getWindowAncestor( c );
+						if( window instanceof JFrame )
+							menuBar = ((JFrame)window).getJMenuBar();
+						else if( window instanceof JDialog )
+							menuBar = ((JDialog)window).getJMenuBar();
+					}
 					JMenu firstMenu = (menuBar != null) ? menuBar.getMenu( 0 ) : null;
 
 					// select first menu and show mnemonics

flatlaf-core/src/main/java/com/formdev/flatlaf/resources/EmptyPackage.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2021 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.resources;
+
+/**
+ * The only purpose of this file is to add a .class file to this package to make it non-empty.
+ * Otherwise the compiler outputs a warning because this package is opend in module-info.java.
+ * Also when using --patch-module (e.g. from an IDE), an error would occur for empty packages.
+ *
+ * @author Karl Tauber
+ */
+interface EmptyPackage
+{
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatButtonUI.java

@@ -388,41 +388,35 @@ public class FlatButtonUI
 	}
 
 	protected Color getBackground( JComponent c ) {
+		boolean toolBarButton = isToolBarButton( c );
+
+		// selected state
 		if( ((AbstractButton)c).isSelected() ) {
-			// in toolbar use same colors for disabled and enabled because
+			// in toolbar use same background colors for disabled and enabled because
 			// we assume that toolbar icon is shown disabled
-			boolean toolBarButton = isToolBarButton( c );
 			return buttonStateColor( c,
 				toolBarButton ? toolbarSelectedBackground : selectedBackground,
 				toolBarButton ? toolbarSelectedBackground : disabledSelectedBackground,
-				null, null,
+				null,
+				null,
 				toolBarButton ? toolbarPressedBackground : pressedBackground );
 		}
 
-		if( !c.isEnabled() )
-			return disabledBackground;
-
 		// toolbar button
-		if( isToolBarButton( c ) ) {
-			ButtonModel model = ((AbstractButton)c).getModel();
-			if( model.isPressed() )
-				return toolbarPressedBackground;
-			if( model.isRollover() )
-				return toolbarHoverBackground;
-
-			// use component background if explicitly set
+		if( toolBarButton ) {
 			Color bg = c.getBackground();
-			if( isCustomBackground( bg ) )
-				return bg;
-
-			// do not paint background
-			return null;
+			return buttonStateColor( c,
+				isCustomBackground( bg ) ? bg : null,
+				null,
+				null,
+				toolbarHoverBackground,
+				toolbarPressedBackground );
 		}
 
 		boolean def = isDefaultButton( c );
 		return buttonStateColor( c,
 			getBackgroundBase( c, def ),
-			null,
+			disabledBackground,
 			isCustomBackground( c.getBackground() ) ? null : (def ? defaultFocusedBackground : focusedBackground),
 			def ? defaultHoverBackground : hoverBackground,
 			def ? defaultPressedBackground : pressedBackground );
@@ -444,16 +438,18 @@ public class FlatButtonUI
 	public static Color buttonStateColor( Component c, Color enabledColor, Color disabledColor,
 		Color focusedColor, Color hoverColor, Color pressedColor )
 	{
-		AbstractButton b = (c instanceof AbstractButton) ? (AbstractButton) c : null;
-
 		if( !c.isEnabled() )
 			return disabledColor;
 
-		if( pressedColor != null && b != null && b.getModel().isPressed() )
-			return pressedColor;
+		if( c instanceof AbstractButton ) {
+			ButtonModel model = ((AbstractButton)c).getModel();
 
-		if( hoverColor != null && b != null && b.getModel().isRollover() )
-			return hoverColor;
+			if( pressedColor != null && model.isPressed() )
+				return pressedColor;
+
+			if( hoverColor != null && model.isRollover() )
+				return hoverColor;
+		}
 
 		if( focusedColor != null && isFocusPainted( c ) && FlatUIUtils.isPermanentFocusOwner( c ) )
 			return focusedColor;

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatComboBoxUI.java

@@ -243,7 +243,24 @@ public class FlatComboBoxUI
 			public void layoutContainer( Container parent ) {
 				super.layoutContainer( parent );
 
-				if ( editor != null && padding != null ) {
+				if( arrowButton != null ) {
+					Insets insets = getInsets();
+					int buttonWidth = parent.getPreferredSize().height - insets.top - insets.bottom;
+					if( buttonWidth != arrowButton.getWidth() ) {
+						// set width of arrow button to preferred height of combobox
+						int xOffset = comboBox.getComponentOrientation().isLeftToRight()
+							? arrowButton.getWidth() - buttonWidth
+							: 0;
+						arrowButton.setBounds( arrowButton.getX() + xOffset, arrowButton.getY(),
+							buttonWidth, arrowButton.getHeight() );
+
+						// update editor bounds
+						if( editor != null )
+							editor.setBounds( rectangleForCurrentValue() );
+					}
+				}
+
+				if( editor != null && padding != null ) {
 					// fix editor bounds by subtracting padding
 					editor.setBounds( FlatUIUtils.subtractInsets( editor.getBounds(), padding ) );
 				}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarUI.java

@@ -16,7 +16,9 @@
 
 package com.formdev.flatlaf.ui;
 
+import java.awt.Color;
 import java.awt.Graphics;
+import java.awt.Window;
 import java.awt.event.ActionEvent;
 import javax.swing.AbstractAction;
 import javax.swing.ActionMap;
@@ -52,8 +54,6 @@ import com.formdev.flatlaf.util.SystemInfo;
 public class FlatMenuBarUI
 	extends BasicMenuBarUI
 {
-	protected boolean unifiedBackground;
-
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatMenuBarUI();
 	}
@@ -68,8 +68,6 @@ public class FlatMenuBarUI
 		super.installDefaults();
 
 		LookAndFeel.installProperty( menuBar, "opaque", false );
-
-		unifiedBackground = UIManager.getBoolean( "TitlePane.unifiedBackground" );
 	}
 
 	@Override
@@ -86,31 +84,40 @@ public class FlatMenuBarUI
 
 	@Override
 	public void update( Graphics g, JComponent c ) {
-		// do not fill background if menubar is embedded into title pane
-		if( isFillBackground( c ) ) {
-			g.setColor( c.getBackground() );
+		// paint background
+		Color background = getBackground( c );
+		if( background != null ) {
+			g.setColor( background );
 			g.fillRect( 0, 0, c.getWidth(), c.getHeight() );
 		}
 
 		paint( g, c );
 	}
 
-	protected boolean isFillBackground( JComponent c ) {
-		// paint background in opaque or having custom background color
-		if( c.isOpaque() || !(c.getBackground() instanceof UIResource) )
-			return true;
+	protected Color getBackground( JComponent c ) {
+		Color background = c.getBackground();
 
-		// do not paint background for unified title pane
-		if( unifiedBackground )
-			return false;
+		// paint background if opaque or if having custom background color
+		if( c.isOpaque() || !(background instanceof UIResource) )
+			return background;
+
+		// paint background if menu bar is not the "main" menu bar
+		JRootPane rootPane = SwingUtilities.getRootPane( c );
+		if( rootPane == null || !(rootPane.getParent() instanceof Window) || rootPane.getJMenuBar() != c )
+			return background;
+
+		// use parent background for unified title pane
+		// (not storing value of "TitlePane.unifiedBackground" in class to allow changing at runtime)
+		if( UIManager.getBoolean( "TitlePane.unifiedBackground" ) &&
+			FlatNativeWindowBorder.hasCustomDecoration( (Window) rootPane.getParent() ) )
+		  background = FlatUIUtils.getParentBackground( c );
 
 		// paint background in full screen mode
-		JRootPane rootPane = SwingUtilities.getRootPane( c );
-		if( rootPane == null || FlatUIUtils.isFullScreen( rootPane ) )
-			return true;
+		if( FlatUIUtils.isFullScreen( rootPane ) )
+			return background;
 
 		// do not paint background if menu bar is embedded into title pane
-		return rootPane.getJMenuBar() != c || !FlatRootPaneUI.isMenuBarEmbedded( rootPane );
+		return FlatRootPaneUI.isMenuBarEmbedded( rootPane ) ? null : background;
 	}
 
 	//---- class TakeFocus ----------------------------------------------------

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeWindowBorder.java

@@ -27,6 +27,7 @@ import javax.swing.JRootPane;
 import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.event.ChangeListener;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.FlatSystemProperties;
 import com.formdev.flatlaf.ui.JBRCustomDecorations.JBRWindowTopBorder;
@@ -40,9 +41,22 @@ import com.formdev.flatlaf.util.SystemInfo;
  */
 public class FlatNativeWindowBorder
 {
+	// can use window decorations if:
+	// - on Windows 10
+	// - not when running in JetBrains Projector, Webswing or WinPE
+	// - not disabled via system property
+	private static final boolean canUseWindowDecorations =
+		SystemInfo.isWindows_10_orLater &&
+		!SystemInfo.isProjector &&
+		!SystemInfo.isWebswing &&
+		!SystemInfo.isWinPE &&
+		FlatSystemProperties.getBoolean( FlatSystemProperties.USE_WINDOW_DECORATIONS, true );
+
 	// check this field before using class JBRCustomDecorations to avoid unnecessary loading of that class
-	private static final boolean canUseJBRCustomDecorations
-		= SystemInfo.isJetBrainsJVM_11_orLater && SystemInfo.isWindows_10_orLater;
+	private static final boolean canUseJBRCustomDecorations =
+		canUseWindowDecorations &&
+		SystemInfo.isJetBrainsJVM_11_orLater &&
+		FlatSystemProperties.getBoolean( FlatSystemProperties.USE_JETBRAINS_CUSTOM_DECORATIONS, true );
 
 	private static Boolean supported;
 	private static Provider nativeProvider;
@@ -62,25 +76,25 @@ public class FlatNativeWindowBorder
 		if( !isSupported() )
 			return null;
 
-		// Check whether root pane already has a window, which is the case when switching LaF.
+		// Check whether root pane already has a window, which is the case when
+		// switching from another LaF to FlatLaf.
 		// Also check whether the window is displayable, which is required to install
 		// FlatLaf native window border.
 		// If the window is not displayable, then it was probably closed/disposed but not yet removed
 		// from the list of windows that AWT maintains and returns with Window.getWindows().
 		// It could be also be a window that is currently hidden, but may be shown later.
 		Window window = SwingUtilities.windowForComponent( rootPane );
-		if( window != null && window.isDisplayable() ) {
-			install( window, FlatSystemProperties.USE_WINDOW_DECORATIONS );
-			return null;
-		}
+		if( window != null && window.isDisplayable() )
+			install( window );
 
 		// Install FlatLaf native window border, which must be done late,
 		// when the native window is already created, because it needs access to the window.
+		// Uninstall FlatLaf native window border when window is disposed (or root pane removed).
 		// "ancestor" property change event is fired from JComponent.addNotify() and removeNotify().
 		PropertyChangeListener ancestorListener = e -> {
 			Object newValue = e.getNewValue();
 			if( newValue instanceof Window )
-				install( (Window) newValue, FlatSystemProperties.USE_WINDOW_DECORATIONS );
+				install( (Window) newValue );
 			else if( newValue == null && e.getOldValue() instanceof Window )
 				uninstall( (Window) e.getOldValue() );
 		};
@@ -88,7 +102,7 @@ public class FlatNativeWindowBorder
 		return ancestorListener;
 	}
 
-	static void install( Window window, String systemPropertyKey ) {
+	static void install( Window window ) {
 		if( hasCustomDecoration( window ) )
 			return;
 
@@ -98,13 +112,11 @@ public class FlatNativeWindowBorder
 
 		if( window instanceof JFrame ) {
 			JFrame frame = (JFrame) window;
+			JRootPane rootPane = frame.getRootPane();
 
-			// do not enable native window border if JFrame should use system window decorations
-			// and if not forced to use FlatLaf/JBR native window decorations
-			if( !JFrame.isDefaultLookAndFeelDecorated() &&
-				!UIManager.getBoolean( "TitlePane.useWindowDecorations" ) &&
-				!FlatSystemProperties.getBoolean( systemPropertyKey, false ) )
-			  return;
+			// check whether disabled via system property, client property or UI default
+			if( !useWindowDecorations( rootPane ) )
+				return;
 
 			// do not enable native window border if frame is undecorated
 			if( frame.isUndecorated() )
@@ -114,17 +126,15 @@ public class FlatNativeWindowBorder
 			setHasCustomDecoration( frame, true );
 
 			// enable Swing window decoration
-			frame.getRootPane().setWindowDecorationStyle( JRootPane.FRAME );
+			rootPane.setWindowDecorationStyle( JRootPane.FRAME );
 
 		} else if( window instanceof JDialog ) {
 			JDialog dialog = (JDialog) window;
+			JRootPane rootPane = dialog.getRootPane();
 
-			// do not enable native window border if JDialog should use system window decorations
-			// and if not forced to use FlatLaf/JBR native window decorations
-			if( !JDialog.isDefaultLookAndFeelDecorated() &&
-				!UIManager.getBoolean( "TitlePane.useWindowDecorations" ) &&
-				!FlatSystemProperties.getBoolean( systemPropertyKey, false ) )
-			  return;
+			// check whether disabled via system property, client property or UI default
+			if( !useWindowDecorations( rootPane ) )
+				return;
 
 			// do not enable native window border if dialog is undecorated
 			if( dialog.isUndecorated() )
@@ -134,7 +144,7 @@ public class FlatNativeWindowBorder
 			setHasCustomDecoration( dialog, true );
 
 			// enable Swing window decoration
-			dialog.getRootPane().setWindowDecorationStyle( JRootPane.PLAIN_DIALOG );
+			rootPane.setWindowDecorationStyle( JRootPane.PLAIN_DIALOG );
 		}
 	}
 
@@ -144,11 +154,18 @@ public class FlatNativeWindowBorder
 			return;
 		}
 
+		if( !isSupported() )
+			return;
+
 		// remove listener
 		if( data instanceof PropertyChangeListener )
 			rootPane.removePropertyChangeListener( "ancestor", (PropertyChangeListener) data );
 
-		// uninstall native window border, except when switching to another FlatLaf theme
+		// do not uninstall when switching to another FlatLaf theme and if still enabled
+		if( UIManager.getLookAndFeel() instanceof FlatLaf && useWindowDecorations( rootPane ) )
+			return;
+
+		// uninstall native window border
 		Window window = SwingUtilities.windowForComponent( rootPane );
 		if( window != null )
 			uninstall( window );
@@ -158,10 +175,6 @@ public class FlatNativeWindowBorder
 		if( !hasCustomDecoration( window ) )
 			return;
 
-		// do not uninstall when switching to another FlatLaf theme
-		if( UIManager.getLookAndFeel() instanceof FlatLaf )
-			return;
-
 		// disable native window border for window
 		setHasCustomDecoration( window, false );
 
@@ -179,6 +192,14 @@ public class FlatNativeWindowBorder
 		}
 	}
 
+	private static boolean useWindowDecorations( JRootPane rootPane ) {
+		return FlatUIUtils.getBoolean( rootPane,
+			FlatSystemProperties.USE_WINDOW_DECORATIONS,
+			FlatClientProperties.USE_WINDOW_DECORATIONS,
+			"TitlePane.useWindowDecorations",
+			false );
+	}
+
 	public static boolean hasCustomDecoration( Window window ) {
 		if( canUseJBRCustomDecorations )
 			return JBRCustomDecorations.hasCustomDecoration( window );
@@ -217,37 +238,44 @@ public class FlatNativeWindowBorder
 		nativeProvider.setTitleBarAppIconBounds( window, appIconBounds );
 	}
 
+	static boolean showWindow( Window window, int cmd ) {
+		if( canUseJBRCustomDecorations || !isSupported() )
+			return false;
+
+		return nativeProvider.showWindow( window, cmd );
+	}
+
 	private static void initialize() {
 		if( supported != null )
 			return;
 		supported = false;
 
-		// requires Windows 10
-		if( !SystemInfo.isWindows_10_orLater )
-			return;
-
-		// do not use when running in JetBrains Projector
-		if( SystemInfo.isProjector )
-			return;
-
-		// check whether disabled via system property
-		if( !FlatSystemProperties.getBoolean( FlatSystemProperties.USE_WINDOW_DECORATIONS, true ) )
+		if( !canUseWindowDecorations )
 			return;
 
 		try {
 /*
 			Class<?> cls = Class.forName( "com.formdev.flatlaf.natives.jna.windows.FlatWindowsNativeWindowBorder" );
 			Method m = cls.getMethod( "getInstance" );
-			nativeProvider = (Provider) m.invoke( null );
+			setNativeProvider( (Provider) m.invoke( null ) );
 */
-			nativeProvider = FlatWindowsNativeWindowBorder.getInstance();
-
-			supported = (nativeProvider != null);
+			setNativeProvider( FlatWindowsNativeWindowBorder.getInstance() );
 		} catch( Exception ex ) {
 			// ignore
 		}
 	}
 
+	/**
+	 * @since 1.1.1
+	 */
+	public static void setNativeProvider( Provider provider ) {
+		if( nativeProvider != null )
+			throw new IllegalStateException();
+
+		nativeProvider = provider;
+		supported = (nativeProvider != null);
+	}
+
 	//---- interface Provider -------------------------------------------------
 
 	public interface Provider
@@ -258,6 +286,13 @@ public class FlatNativeWindowBorder
 		void setTitleBarHitTestSpots( Window window, List<Rectangle> hitTestSpots );
 		void setTitleBarAppIconBounds( Window window, Rectangle appIconBounds );
 
+		// commands for showWindow(); values must match Win32 API
+		// https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-showwindow
+		int SW_MAXIMIZE = 3;
+		int SW_MINIMIZE = 6;
+		int SW_RESTORE = 9;
+		boolean showWindow( Window window, int cmd );
+
 		boolean isColorizationColorAffectsBorders();
 		Color getColorizationColor();
 		int getColorizationColorBalance();

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPopupFactory.java

@@ -70,7 +70,7 @@ public class FlatPopupFactory
 
 		boolean forceHeavyWeight = isOptionEnabled( owner, contents, FlatClientProperties.POPUP_FORCE_HEAVY_WEIGHT, "Popup.forceHeavyWeight" );
 
-		if( !isOptionEnabled( owner, contents, FlatClientProperties.POPUP_DROP_SHADOW_PAINTED, "Popup.dropShadowPainted" ) || SystemInfo.isProjector )
+		if( !isOptionEnabled( owner, contents, FlatClientProperties.POPUP_DROP_SHADOW_PAINTED, "Popup.dropShadowPainted" ) || SystemInfo.isProjector || SystemInfo.isWebswing )
 			return new NonFlashingPopup( getPopupForScreenOfOwner( owner, contents, x, y, forceHeavyWeight ), contents );
 
 		// macOS and Linux adds drop shadow to heavy weight popups

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRootPaneUI.java

@@ -95,7 +95,7 @@ public class FlatRootPaneUI
 		else
 			installBorder();
 
-		nativeWindowBorderData = FlatNativeWindowBorder.install( rootPane );
+		installNativeWindowBorder();
 	}
 
 	protected void installBorder() {
@@ -110,8 +110,7 @@ public class FlatRootPaneUI
 	public void uninstallUI( JComponent c ) {
 		super.uninstallUI( c );
 
-		FlatNativeWindowBorder.uninstall( rootPane, nativeWindowBorderData );
-
+		uninstallNativeWindowBorder();
 		uninstallClientDecorations();
 		rootPane = null;
 	}
@@ -137,6 +136,34 @@ public class FlatRootPaneUI
 			c.putClientProperty( "jetbrains.awt.windowDarkAppearance", FlatLaf.isLafDark() );
 	}
 
+	/**
+	 * @since 1.1.2
+	 */
+	protected void installNativeWindowBorder() {
+		nativeWindowBorderData = FlatNativeWindowBorder.install( rootPane );
+	}
+
+	/**
+	 * @since 1.1.2
+	 */
+	protected void uninstallNativeWindowBorder() {
+		FlatNativeWindowBorder.uninstall( rootPane, nativeWindowBorderData );
+		nativeWindowBorderData = null;
+	}
+
+	/**
+	 * @since 1.1.2
+	 */
+	public static void updateNativeWindowBorder( JRootPane rootPane ) {
+		RootPaneUI rui = rootPane.getUI();
+		if( !(rui instanceof FlatRootPaneUI) )
+			return;
+
+		FlatRootPaneUI ui = (FlatRootPaneUI) rui;
+		ui.uninstallNativeWindowBorder();
+		ui.installNativeWindowBorder();
+	}
+
 	protected void installClientDecorations() {
 		boolean isNativeWindowBorderSupported = FlatNativeWindowBorder.isSupported();
 
@@ -218,6 +245,10 @@ public class FlatRootPaneUI
 					installBorder();
 				break;
 
+			case FlatClientProperties.USE_WINDOW_DECORATIONS:
+				updateNativeWindowBorder( rootPane );
+				break;
+
 			case FlatClientProperties.MENU_BAR_EMBEDDED:
 				if( titlePane != null ) {
 					titlePane.menuBarChanged();
@@ -225,6 +256,12 @@ public class FlatRootPaneUI
 					rootPane.repaint();
 				}
 				break;
+
+			case FlatClientProperties.TITLE_BAR_BACKGROUND:
+			case FlatClientProperties.TITLE_BAR_FOREGROUND:
+				if( titlePane != null )
+					titlePane.titleBarColorsChanged();
+				break;
 		}
 	}
 
@@ -431,7 +468,9 @@ public class FlatRootPaneUI
 				(parent instanceof JFrame &&
 				 (((JFrame)parent).getJMenuBar() == null ||
 				  !((JFrame)parent).getJMenuBar().isVisible())) ||
-				parent instanceof JDialog;
+				(parent instanceof JDialog &&
+				 (((JDialog)parent).getJMenuBar() == null ||
+				  !((JDialog)parent).getJMenuBar().isVisible()));
 		}
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSpinnerUI.java

@@ -375,8 +375,8 @@ public class FlatSpinnerUI
 			Rectangle editorRect = new Rectangle( r );
 			Rectangle buttonsRect = new Rectangle( r );
 
-			// make button area square
-			int buttonsWidth = r.height;
+			// make button area square (if spinner has preferred height)
+			int buttonsWidth = parent.getPreferredSize().height - insets.top - insets.bottom;
 			buttonsRect.width = buttonsWidth;
 
 			if( parent.getComponentOrientation().isLeftToRight() ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSplitPaneUI.java

@@ -46,10 +46,13 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault SplitPaneDivider.border					Border
  * @uiDefault SplitPaneDivider.draggingColor			Color	only used if continuousLayout is false
  *
+ * <!-- JSplitPane -->
+ *
+ * @uiDefault SplitPane.continuousLayout				boolean
+ *
  * <!-- FlatSplitPaneUI -->
  *
  * @uiDefault Component.arrowType						String	chevron (default) or triangle
- * @uiDefault SplitPane.continuousLayout				boolean
  * @uiDefault SplitPaneDivider.oneTouchArrowColor		Color
  * @uiDefault SplitPaneDivider.oneTouchHoverArrowColor	Color
  * @uiDefault SplitPaneDivider.oneTouchPressedArrowColor Color
@@ -65,7 +68,6 @@ public class FlatSplitPaneUI
 	extends BasicSplitPaneUI
 {
 	protected String arrowType;
-	private Boolean continuousLayout;
 	protected Color oneTouchArrowColor;
 	protected Color oneTouchHoverArrowColor;
 	protected Color oneTouchPressedArrowColor;
@@ -85,8 +87,6 @@ public class FlatSplitPaneUI
 		oneTouchPressedArrowColor = UIManager.getColor( "SplitPaneDivider.oneTouchPressedArrowColor" );
 
 		super.installDefaults();
-
-		continuousLayout = (Boolean) UIManager.get( "SplitPane.continuousLayout" );
 	}
 
 	@Override
@@ -98,11 +98,6 @@ public class FlatSplitPaneUI
 		oneTouchPressedArrowColor = null;
 	}
 
-	@Override
-	public boolean isContinuousLayout() {
-		return super.isContinuousLayout() || (continuousLayout != null && Boolean.TRUE.equals( continuousLayout ));
-	}
-
 	@Override
 	public BasicSplitPaneDivider createDefaultDivider() {
 		return new FlatSplitPaneDivider( this );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTabbedPaneUI.java

@@ -722,6 +722,13 @@ public class FlatTabbedPaneUI
 	}
 
 	protected Insets getRealTabAreaInsets( int tabPlacement ) {
+		// this is to avoid potential NPE in ensureSelectedTabIsVisible()
+		// (see https://github.com/JFormDesigner/FlatLaf/issues/299)
+		// but now should actually never occur because added more checks to
+		// ensureSelectedTabIsVisibleLater() and ensureSelectedTabIsVisible()
+		if( tabAreaInsets == null )
+			tabAreaInsets = new Insets( 0, 0, 0, 0 );
+
 		Insets currentTabAreaInsets = super.getTabAreaInsets( tabPlacement );
 		Insets insets = (Insets) currentTabAreaInsets.clone();
 
@@ -1386,13 +1393,18 @@ public class FlatTabbedPaneUI
 	}
 
 	protected void ensureSelectedTabIsVisibleLater() {
+		// do nothing if not yet displayable or if not invoked from dispatch thread,
+		// which may be the case when creating/modifying in another thread
+		if( !tabPane.isDisplayable() || !EventQueue.isDispatchThread() )
+			return;
+
 		EventQueue.invokeLater( () -> {
 			ensureSelectedTabIsVisible();
 		} );
 	}
 
 	protected void ensureSelectedTabIsVisible() {
-		if( tabPane == null || tabViewport == null )
+		if( tabPane == null || tabViewport == null || !tabPane.isDisplayable() )
 			return;
 
 		ensureCurrentLayout();

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java

@@ -16,6 +16,7 @@
 
 package com.formdev.flatlaf.ui;
 
+import static com.formdev.flatlaf.FlatClientProperties.*;
 import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.Component;
@@ -87,6 +88,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault TitlePane.centerTitle							boolean
  * @uiDefault TitlePane.centerTitleIfMenuBarEmbedded		boolean
  * @uiDefault TitlePane.menuBarTitleGap						int
+ * @uiDefault TitlePane.icon								Icon
  * @uiDefault TitlePane.closeIcon							Icon
  * @uiDefault TitlePane.iconifyIcon							Icon
  * @uiDefault TitlePane.maximizeIcon						Icon
@@ -104,7 +106,6 @@ public class FlatTitlePane
 	protected final Color embeddedForeground = UIManager.getColor( "TitlePane.embeddedForeground" );
 	protected final Color borderColor = UIManager.getColor( "TitlePane.borderColor" );
 
-	protected final boolean unifiedBackground = UIManager.getBoolean( "TitlePane.unifiedBackground" );
 	protected final Dimension iconSize = UIManager.getDimension( "TitlePane.iconSize" );
 	protected final int buttonMaximizedHeight = UIManager.getInt( "TitlePane.buttonMaximizedHeight" );
 	protected final boolean centerTitle = UIManager.getBoolean( "TitlePane.centerTitle" );
@@ -197,14 +198,16 @@ public class FlatTitlePane
 				}
 
 				// If menu bar is embedded and contains a horizontal glue component,
-				// then move the title label to the same location as the glue component.
+				// then move the title label to the same location as the glue component
+				// and give it the same width.
 				// This allows placing any component on the trailing side of the title pane.
 				JMenuBar menuBar = rootPane.getJMenuBar();
 				if( hasVisibleEmbeddedMenuBar( menuBar ) ) {
 					Component horizontalGlue = findHorizontalGlue( menuBar );
 					if( horizontalGlue != null ) {
 						Point glueLocation = SwingUtilities.convertPoint( horizontalGlue, 0, 0, titleLabel );
-						titleLabel.setLocation( titleLabel.getX() + glueLocation.x, titleLabel.getY() );
+						titleLabel.setBounds( titleLabel.getX() + glueLocation.x, titleLabel.getY(),
+							horizontalGlue.getWidth(), titleLabel.getHeight() );
 					}
 				}
 			}
@@ -263,10 +266,17 @@ public class FlatTitlePane
 	}
 
 	protected void activeChanged( boolean active ) {
-		boolean hasEmbeddedMenuBar = hasVisibleEmbeddedMenuBar( rootPane.getJMenuBar() );
-		Color background = FlatUIUtils.nonUIResource( active ? activeBackground : inactiveBackground );
-		Color foreground = FlatUIUtils.nonUIResource( active ? activeForeground : inactiveForeground );
-		Color titleForeground = (hasEmbeddedMenuBar && active) ? FlatUIUtils.nonUIResource( embeddedForeground ) : foreground;
+		Color background = clientPropertyColor( rootPane, TITLE_BAR_BACKGROUND, null );
+		Color foreground = clientPropertyColor( rootPane, TITLE_BAR_FOREGROUND, null );
+		Color titleForeground = foreground;
+		if( background == null )
+			background = FlatUIUtils.nonUIResource( active ? activeBackground : inactiveBackground );
+		if( foreground == null ) {
+			foreground = FlatUIUtils.nonUIResource( active ? activeForeground : inactiveForeground );
+			titleForeground = (active && hasVisibleEmbeddedMenuBar( rootPane.getJMenuBar() ))
+				? FlatUIUtils.nonUIResource( embeddedForeground )
+				: foreground;
+		}
 
 		setBackground( background );
 		titleLabel.setForeground( titleForeground );
@@ -344,7 +354,7 @@ public class FlatTitlePane
 			iconLabel.setIcon( FlatTitlePaneIcon.create( images, iconSize ) );
 		else {
 			// no icon set on window --> use default icon
-			Icon defaultIcon = UIManager.getIcon( "InternalFrame.icon" );
+			Icon defaultIcon = UIManager.getIcon( "TitlePane.icon" );
 			if( defaultIcon != null && (defaultIcon.getIconWidth() == 0 || defaultIcon.getIconHeight() == 0) )
 				defaultIcon = null;
 			if( defaultIcon != null ) {
@@ -427,9 +437,11 @@ public class FlatTitlePane
 	 */
 	protected boolean isMenuBarEmbedded() {
 		// not storing value of "TitlePane.menuBarEmbedded" in class to allow changing at runtime
-		return UIManager.getBoolean( "TitlePane.menuBarEmbedded" ) &&
-			FlatClientProperties.clientPropertyBoolean( rootPane, FlatClientProperties.MENU_BAR_EMBEDDED, true ) &&
-			FlatSystemProperties.getBoolean( FlatSystemProperties.MENUBAR_EMBEDDED, true );
+		return FlatUIUtils.getBoolean( rootPane,
+			FlatSystemProperties.MENUBAR_EMBEDDED,
+			FlatClientProperties.MENU_BAR_EMBEDDED,
+			"TitlePane.menuBarEmbedded",
+			false );
 	}
 
 	protected Rectangle getMenuBarBounds() {
@@ -450,9 +462,13 @@ public class FlatTitlePane
 		// This allows placing any component on the trailing side of the title pane.
 		Component horizontalGlue = findHorizontalGlue( rootPane.getJMenuBar() );
 		if( horizontalGlue != null ) {
-			int titleWidth = Math.max( titleLabel.getWidth(), 0 ); // title width may be negative
+			boolean leftToRight = getComponentOrientation().isLeftToRight();
+			int titleWidth = leftToRight
+				? buttonPanel.getX() - (leftPanel.getX() + leftPanel.getWidth())
+				: leftPanel.getX() - (buttonPanel.getX() + buttonPanel.getWidth());
+			titleWidth = Math.max( titleWidth, 0 ); // title width may be negative
 			bounds.width += titleWidth;
-			if( !getComponentOrientation().isLeftToRight() )
+			if( !leftToRight )
 				bounds.x -= titleWidth;
 		}
 
@@ -460,6 +476,9 @@ public class FlatTitlePane
 	}
 
 	protected Component findHorizontalGlue( JMenuBar menuBar ) {
+		if( menuBar == null )
+			return null;
+
 		int count = menuBar.getComponentCount();
 		for( int i = count - 1; i >= 0; i-- ) {
 			Component c = menuBar.getComponent( i );
@@ -469,6 +488,11 @@ public class FlatTitlePane
 		return null;
 	}
 
+	protected void titleBarColorsChanged() {
+		activeChanged( window == null || window.isActive() );
+		repaint();
+	}
+
 	protected void menuBarChanged() {
 		menuBarPlaceholder.invalidate();
 
@@ -513,10 +537,12 @@ debug*/
 
 	@Override
 	protected void paintComponent( Graphics g ) {
-		if( !unifiedBackground ) {
-			g.setColor( getBackground() );
-			g.fillRect( 0, 0, getWidth(), getHeight() );
-		}
+		// not storing value of "TitlePane.unifiedBackground" in class to allow changing at runtime
+		g.setColor( (UIManager.getBoolean( "TitlePane.unifiedBackground" ) &&
+				clientPropertyColor( rootPane, TITLE_BAR_BACKGROUND, null ) == null)
+			? FlatUIUtils.getParentBackground( this )
+			: getBackground() );
+		g.fillRect( 0, 0, getWidth(), getHeight() );
 	}
 
 	protected void repaintWindowBorder() {
@@ -533,10 +559,12 @@ debug*/
 	 * Iconifies the window.
 	 */
 	protected void iconify() {
-		if( window instanceof Frame ) {
-			Frame frame = (Frame) window;
+		if( !(window instanceof Frame) )
+			return;
+
+		Frame frame = (Frame) window;
+		if( !FlatNativeWindowBorder.showWindow( window, FlatNativeWindowBorder.Provider.SW_MINIMIZE ) )
 			frame.setExtendedState( frame.getExtendedState() | Frame.ICONIFIED );
-		}
 	}
 
 	/**
@@ -554,7 +582,8 @@ debug*/
 		rootPane.putClientProperty( "_flatlaf.maximizedBoundsUpToDate", true );
 
 		// maximize window
-		frame.setExtendedState( frame.getExtendedState() | Frame.MAXIMIZED_BOTH );
+		if( !FlatNativeWindowBorder.showWindow( frame, FlatNativeWindowBorder.Provider.SW_MAXIMIZE ) )
+			frame.setExtendedState( frame.getExtendedState() | Frame.MAXIMIZED_BOTH );
 	}
 
 	protected void updateMaximizedBounds() {
@@ -642,8 +671,11 @@ debug*/
 	 * Restores the window size.
 	 */
 	protected void restore() {
-		if( window instanceof Frame ) {
-			Frame frame = (Frame) window;
+		if( !(window instanceof Frame) )
+			return;
+
+		Frame frame = (Frame) window;
+		if( !FlatNativeWindowBorder.showWindow( window, FlatNativeWindowBorder.Provider.SW_RESTORE ) ) {
 			int state = frame.getExtendedState();
 			frame.setExtendedState( ((state & Frame.ICONIFIED) != 0)
 				? (state & ~Frame.ICONIFIED)
@@ -710,31 +742,34 @@ debug*/
 		if( r != null )
 			hitTestSpots.add( r );
 
-		r = getNativeHitTestSpot( menuBarPlaceholder );
-		if( r != null ) {
-			Component horizontalGlue = findHorizontalGlue( rootPane.getJMenuBar() );
-			if( horizontalGlue != null ) {
-				// If menu bar is embedded and contains a horizontal glue component,
-				// then split the hit test spot into two spots so that
-				// the glue component area can used to move the window.
+		JMenuBar menuBar = rootPane.getJMenuBar();
+		if( hasVisibleEmbeddedMenuBar( menuBar ) ) {
+			r = getNativeHitTestSpot( menuBarPlaceholder );
+			if( r != null ) {
+				Component horizontalGlue = findHorizontalGlue( menuBar );
+				if( horizontalGlue != null ) {
+					// If menu bar is embedded and contains a horizontal glue component,
+					// then split the hit test spot into two spots so that
+					// the glue component area can used to move the window.
 
-				Point glueLocation = SwingUtilities.convertPoint( horizontalGlue, 0, 0, window );
-				Rectangle r2;
-				if( getComponentOrientation().isLeftToRight() ) {
-					int trailingWidth = (r.x + r.width - HIT_TEST_SPOT_GROW) - glueLocation.x;
-					r.width -= trailingWidth;
-					r2 = new Rectangle( glueLocation.x + horizontalGlue.getWidth(), r.y, trailingWidth, r.height );
-				} else {
-					int leadingWidth = (glueLocation.x + horizontalGlue.getWidth()) - (r.x + HIT_TEST_SPOT_GROW);
-					r.x += leadingWidth;
-					r.width -= leadingWidth;
-					r2 = new Rectangle( glueLocation.x -leadingWidth, r.y, leadingWidth, r.height );
+					Point glueLocation = SwingUtilities.convertPoint( horizontalGlue, 0, 0, window );
+					Rectangle r2;
+					if( getComponentOrientation().isLeftToRight() ) {
+						int trailingWidth = (r.x + r.width - HIT_TEST_SPOT_GROW) - glueLocation.x;
+						r.width -= trailingWidth;
+						r2 = new Rectangle( glueLocation.x + horizontalGlue.getWidth(), r.y, trailingWidth, r.height );
+					} else {
+						int leadingWidth = (glueLocation.x + horizontalGlue.getWidth()) - (r.x + HIT_TEST_SPOT_GROW);
+						r.x += leadingWidth;
+						r.width -= leadingWidth;
+						r2 = new Rectangle( glueLocation.x -leadingWidth, r.y, leadingWidth, r.height );
+					}
+					r2.grow( HIT_TEST_SPOT_GROW, HIT_TEST_SPOT_GROW );
+					hitTestSpots.add( r2 );
 				}
-				r2.grow( HIT_TEST_SPOT_GROW, HIT_TEST_SPOT_GROW );
-				hitTestSpots.add( r2 );
-			}
 
-			hitTestSpots.add( r );
+				hitTestSpots.add( r );
+			}
 		}
 
 		FlatNativeWindowBorder.setTitleBarHeightAndHitTestSpots( window, titleBarHeight, hitTestSpots, appIconBounds );
@@ -784,7 +819,7 @@ debug*/
 			} else if( borderColor != null && (rootPane.getJMenuBar() == null || !rootPane.getJMenuBar().isVisible()) )
 				insets.bottom += UIScale.scale( 1 );
 
-			if( hasNativeCustomDecoration() )
+			if( hasNativeCustomDecoration() && !isWindowMaximized( c ) )
 				insets = FlatUIUtils.addInsets( insets, WindowTopBorder.getInstance().getBorderInsets() );
 
 			return insets;
@@ -803,7 +838,7 @@ debug*/
 				FlatUIUtils.paintFilledRectangle( g, borderColor, x, y + height - lineHeight, width, lineHeight );
 			}
 
-			if( hasNativeCustomDecoration() )
+			if( hasNativeCustomDecoration() && !isWindowMaximized( c ) )
 				WindowTopBorder.getInstance().paintBorder( c, g, x, y, width, height );
 		}
 
@@ -811,6 +846,12 @@ debug*/
 			JMenuBar menuBar = rootPane.getJMenuBar();
 			return hasVisibleEmbeddedMenuBar( menuBar ) ? menuBar.getBorder() : null;
 		}
+
+		protected boolean isWindowMaximized( Component c ) {
+			return window instanceof Frame
+				? (((Frame)window).getExtendedState() & Frame.MAXIMIZED_BOTH) != 0
+				: false;
+		}
 	}
 
 	//---- class FlatTitleLabelUI ---------------------------------------------

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java

@@ -54,6 +54,7 @@ import javax.swing.border.CompoundBorder;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
 import com.formdev.flatlaf.FlatClientProperties;
+import com.formdev.flatlaf.FlatSystemProperties;
 import com.formdev.flatlaf.util.DerivedColor;
 import com.formdev.flatlaf.util.Graphics2DProxy;
 import com.formdev.flatlaf.util.HiDPIUtils;
@@ -140,6 +141,25 @@ public class FlatUIUtils
 		return (value instanceof Number) ? ((Number)value).floatValue() : defaultValue;
 	}
 
+	/**
+	 * @since 1.1.2
+	 */
+	public static boolean getBoolean( JComponent c, String systemPropertyKey,
+		String clientPropertyKey, String uiKey, boolean defaultValue )
+	{
+		// check whether forced to true/false via system property
+		Boolean value = FlatSystemProperties.getBooleanStrict( systemPropertyKey, null );
+		if( value != null )
+			return value;
+
+		// check whether forced to true/false via client property
+		value = FlatClientProperties.clientPropertyBooleanStrict( c, clientPropertyKey, null );
+		if( value != null )
+			return value;
+
+		return getUIBoolean( uiKey, defaultValue );
+	}
+
 	public static boolean isChevron( String arrowType ) {
 		return !"triangle".equals( arrowType );
 	}
@@ -185,7 +205,8 @@ public class FlatUIUtils
 
 	/**
 	 * Returns whether the given component is the permanent focus owner and
-	 * is in the active window. Used to paint focus indicators.
+	 * is in the active window or in a popup window owned by the active window.
+	 * Used to paint focus indicators.
 	 */
 	@SuppressWarnings( "unchecked" )
 	public static boolean isPermanentFocusOwner( Component c ) {
@@ -195,12 +216,18 @@ public class FlatUIUtils
 			Object value = ((JComponent)c).getClientProperty( FlatClientProperties.COMPONENT_FOCUS_OWNER );
 			if( value instanceof Predicate ) {
 				return ((Predicate<JComponent>)value).test( (JComponent) c ) &&
-					keyboardFocusManager.getActiveWindow() == SwingUtilities.windowForComponent( c );
+					isInActiveWindow( c, keyboardFocusManager.getActiveWindow() );
 			}
 		}
 
 		return keyboardFocusManager.getPermanentFocusOwner() == c &&
-			keyboardFocusManager.getActiveWindow() == SwingUtilities.windowForComponent( c );
+			isInActiveWindow( c, keyboardFocusManager.getActiveWindow() );
+	}
+
+	private static boolean isInActiveWindow( Component c, Window activeWindow ) {
+		Window window = SwingUtilities.windowForComponent( c );
+		return window == activeWindow ||
+			(window != null && window.getType() == Window.Type.POPUP && window.getOwner() == activeWindow);
 	}
 
 	/**

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatWindowsNativeWindowBorder.java

@@ -103,8 +103,7 @@ class FlatWindowsNativeWindowBorder
 			if( SystemInfo.isX86_64 )
 				libraryName += "_64";
 
-			nativeLibrary = new NativeLibrary( libraryName,
-				FlatWindowsNativeWindowBorder.class.getClassLoader(), true );
+			nativeLibrary = new NativeLibrary( libraryName, null, true );
 		}
 
 		// check whether native library was successfully loaded
@@ -197,6 +196,16 @@ class FlatWindowsNativeWindowBorder
 		wndProc.appIconBounds = (appIconBounds != null) ? new Rectangle( appIconBounds ) : null;
 	}
 
+	@Override
+	public boolean showWindow( Window window, int cmd ) {
+		WndProc wndProc = windowsMap.get( window );
+		if( wndProc == null )
+			return false;
+
+		wndProc.showWindow( wndProc.hwnd, cmd );
+		return true;
+	}
+
 	@Override
 	public boolean isColorizationColorAffectsBorders() {
 		updateColorization();
@@ -299,6 +308,18 @@ class FlatWindowsNativeWindowBorder
 			this.window = window;
 
 			hwnd = installImpl( window );
+
+			// remove the OS window title bar
+			if( window instanceof JFrame && ((JFrame)window).getExtendedState() != 0 ) {
+				// In case that the frame should be maximized or minimized immediately
+				// when showing, then it is necessary to defer ::SetWindowPos() invocation.
+				// Otherwise the frame will not be maximized or minimized.
+				// This occurs only if frame.pack() was no invoked.
+				EventQueue.invokeLater( () -> {
+					updateFrame( hwnd );
+				});
+			} else
+				updateFrame( hwnd );
 		}
 
 		void uninstall() {
@@ -310,6 +331,8 @@ class FlatWindowsNativeWindowBorder
 
 		private native long installImpl( Window window );
 		private native void uninstallImpl( long hwnd );
+		private native void updateFrame( long hwnd );
+		private native void showWindow( long hwnd, int cmd );
 
 		// invoked from native code
 		private int onNcHitTest( int x, int y, boolean isOnResizeBorder ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/JBRCustomDecorations.java

@@ -36,7 +36,6 @@ import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.plaf.BorderUIResource;
 import com.formdev.flatlaf.FlatLaf;
-import com.formdev.flatlaf.FlatSystemProperties;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.HiDPIUtils;
 import com.formdev.flatlaf.util.SystemInfo;
@@ -73,7 +72,7 @@ public class JBRCustomDecorations
 		// check whether root pane already has a parent, which is the case when switching LaF
 		Window window = SwingUtilities.windowForComponent( rootPane );
 		if( window != null ) {
-			FlatNativeWindowBorder.install( window, FlatSystemProperties.USE_JETBRAINS_CUSTOM_DECORATIONS );
+			FlatNativeWindowBorder.install( window );
 			return null;
 		}
 
@@ -89,7 +88,7 @@ public class JBRCustomDecorations
 
 				Container parent = e.getChangedParent();
 				if( parent instanceof Window )
-					FlatNativeWindowBorder.install( (Window) parent, FlatSystemProperties.USE_JETBRAINS_CUSTOM_DECORATIONS );
+					FlatNativeWindowBorder.install( (Window) parent );
 
 				// remove listener since it is actually not possible to uninstall JBR decorations
 				// use invokeLater to remove listener to avoid that listener
@@ -165,10 +164,6 @@ public class JBRCustomDecorations
 		if( !SystemInfo.isJetBrainsJVM_11_orLater || !SystemInfo.isWindows_10_orLater )
 			return;
 
-		// check whether disabled via system property
-		if( !FlatSystemProperties.getBoolean( FlatSystemProperties.USE_JETBRAINS_CUSTOM_DECORATIONS, true ) )
-			return;
-
 		try {
 			Class<?> awtAcessorClass = Class.forName( "sun.awt.AWTAccessor" );
 			Class<?> compAccessorClass = Class.forName( "sun.awt.AWTAccessor$ComponentAccessor" );

flatlaf-core/src/main/java/com/formdev/flatlaf/util/NativeLibrary.java

@@ -42,9 +42,15 @@ public class NativeLibrary
 
 	/**
 	 * Load native library from given classloader.
+	 * <p>
+	 * Note regarding Java Platform Module System (JPMS):
+	 * If classloader is {@code null}, the library can be only loaded from the module
+	 * that contains this class.
+	 * If classloader is not {@code null}, then the package that contains the library
+	 * must be specified as "open" in module-info.java of the module that contains the library.
 	 *
 	 * @param libraryName resource name of the native library (without "lib" prefix and without extension)
-	 * @param classLoader the classloader used to locate the library
+	 * @param classLoader the classloader used to locate the library, or {@code null}
 	 * @param supported whether the native library is supported on the current platform
 	 */
 	public NativeLibrary( String libraryName, ClassLoader classLoader, boolean supported ) {
@@ -68,7 +74,9 @@ public class NativeLibrary
 		libraryName = decorateLibraryName( libraryName );
 
 		// find library
-		URL libraryUrl = classLoader.getResource( libraryName );
+		URL libraryUrl = (classLoader != null)
+			? classLoader.getResource( libraryName )
+			: NativeLibrary.class.getResource( "/" + libraryName );
 		if( libraryUrl == null ) {
 			log( "Library '" + libraryName + "' not found", null );
 			return false;

flatlaf-core/src/main/java/com/formdev/flatlaf/util/SystemInfo.java

@@ -56,6 +56,8 @@ public class SystemInfo
 
 	// other
 	/** @since 1.1 */ public static final boolean isProjector;
+	/** @since 1.1.2 */ public static final boolean isWebswing;
+	/** @since 1.1.1 */ public static final boolean isWinPE;
 
 	static {
 		// platforms
@@ -91,6 +93,8 @@ public class SystemInfo
 
 		// other
 		isProjector = Boolean.getBoolean( "org.jetbrains.projector.server.enable" );
+		isWebswing = (System.getProperty( "webswing.rootDir" ) != null);
+		isWinPE = isWindows && "X:\\Windows\\System32".equalsIgnoreCase( System.getProperty( "user.dir" ) );
 	}
 
 	public static long scanVersion( String version ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/util/UIScale.java

@@ -180,7 +180,7 @@ public class UIScale
 		// apply custom scale factor specified in system property "flatlaf.uiScale"
 		float customScaleFactor = getCustomScaleFactor();
 		if( customScaleFactor > 0 ) {
-			setUserScaleFactor( customScaleFactor );
+			setUserScaleFactor( customScaleFactor, false );
 			return;
 		}
 
@@ -230,7 +230,7 @@ public class UIScale
 		} else
 			newScaleFactor = computeScaleFactor( font );
 
-		setUserScaleFactor( newScaleFactor );
+		setUserScaleFactor( newScaleFactor, true );
 	}
 
 	private static float computeScaleFactor( Font font ) {
@@ -274,7 +274,7 @@ public class UIScale
 		if( scaleFactor == fontScaleFactor )
 			return font;
 
-		int newFontSize = Math.round( (font.getSize() / fontScaleFactor) * scaleFactor );
+		int newFontSize = Math.max( Math.round( (font.getSize() / fontScaleFactor) * scaleFactor ), 1 );
 		return new FontUIResource( font.deriveFont( (float) newFontSize ) );
 	}
 
@@ -322,11 +322,18 @@ public class UIScale
 	/**
 	 * Sets the user scale factor.
 	 */
-	private static void setUserScaleFactor( float scaleFactor ) {
-		if( scaleFactor <= 1f )
-			scaleFactor = 1f;
-		else // round scale factor to 1/4
-			scaleFactor = Math.round( scaleFactor * 4f ) / 4f;
+	private static void setUserScaleFactor( float scaleFactor, boolean normalize ) {
+		if( normalize ) {
+			if( scaleFactor < 1f ) {
+				scaleFactor = FlatSystemProperties.getBoolean( FlatSystemProperties.UI_SCALE_ALLOW_SCALE_DOWN, false )
+					? Math.round( scaleFactor * 10f ) / 10f // round small scale factor to 1/10
+					: 1f;
+			} else if( scaleFactor > 1f ) // round scale factor to 1/4
+				scaleFactor = Math.round( scaleFactor * 4f ) / 4f;
+		}
+
+		// minimum scale factor
+		scaleFactor = Math.max( scaleFactor, 0.1f );
 
 		float oldScaleFactor = UIScale.scaleFactor;
 		UIScale.scaleFactor = scaleFactor;

flatlaf-core/src/main/resources/com/formdev/flatlaf/IntelliJTheme$ThemeLaf.properties

@@ -22,6 +22,28 @@
 #  - https://www.formdev.com/flatlaf/how-to-customize/
 #
 
+#---- system colors ----
+
+# fix (most) system colors because they are usually not set in .json files
+desktop = lazy(TextField.background)
+activeCaptionText = lazy(TextField.foreground)
+inactiveCaptionText = lazy(TextField.foreground)
+window = lazy(Panel.background)
+windowBorder = lazy(TextField.foreground)
+windowText = lazy(TextField.foreground)
+menu = lazy(Menu.background)
+menuText = lazy(Menu.foreground)
+text = lazy(TextField.background)
+textText = lazy(TextField.foreground)
+textHighlight = lazy(TextField.selectionBackground)
+textHighlightText = lazy(TextField.selectionForeground)
+textInactiveText = lazy(TextField.inactiveForeground)
+control = lazy(Panel.background)
+controlText = lazy(TextField.foreground)
+info = lazy(ToolTip.background)
+infoText = lazy(ToolTip.foreground)
+
+
 #---- Button ----
 
 Button.startBackground = $Button.background

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoFrame.java

@@ -24,7 +24,6 @@ import java.util.prefs.Preferences;
 import javax.swing.*;
 import javax.swing.text.DefaultEditorKit;
 import javax.swing.text.StyleContext;
-import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.demo.HintManager.Hint;
 import com.formdev.flatlaf.demo.extras.*;
@@ -35,8 +34,8 @@ import com.formdev.flatlaf.extras.FlatUIDefaultsInspector;
 import com.formdev.flatlaf.extras.components.FlatButton;
 import com.formdev.flatlaf.extras.components.FlatButton.ButtonType;
 import com.formdev.flatlaf.extras.FlatSVGUtils;
-import com.formdev.flatlaf.ui.FlatNativeWindowBorder;
 import com.formdev.flatlaf.ui.JBRCustomDecorations;
+import com.formdev.flatlaf.util.SystemInfo;
 import net.miginfocom.layout.ConstraintParser;
 import net.miginfocom.layout.LC;
 import net.miginfocom.layout.UnitValue;
@@ -144,35 +143,21 @@ class DemoFrame
 	private void windowDecorationsChanged() {
 		boolean windowDecorations = windowDecorationsCheckBoxMenuItem.isSelected();
 
-		// change window decoration of demo main frame
-		if( FlatNativeWindowBorder.isSupported() ) {
-			FlatNativeWindowBorder.setHasCustomDecoration( this, windowDecorations );
-			getRootPane().setWindowDecorationStyle( windowDecorations ? JRootPane.FRAME : JRootPane.NONE );
-		} else {
-			dispose();
-			setUndecorated( windowDecorations );
-			getRootPane().setWindowDecorationStyle( windowDecorations ? JRootPane.FRAME : JRootPane.NONE );
-			setVisible( true );
-		}
-		menuBarEmbeddedCheckBoxMenuItem.setEnabled( windowDecorations );
+		// change window decoration of all frames and dialogs
+		FlatLaf.setUseNativeWindowDecorations( windowDecorations );
 
-		// enable/disable window decoration for later created frames/dialogs
-		UIManager.put( "TitlePane.useWindowDecorations", windowDecorations );
+		menuBarEmbeddedCheckBoxMenuItem.setEnabled( windowDecorations );
+		unifiedTitleBarMenuItem.setEnabled( windowDecorations );
 	}
 
 	private void menuBarEmbeddedChanged() {
-		getRootPane().putClientProperty( FlatClientProperties.MENU_BAR_EMBEDDED,
-			menuBarEmbeddedCheckBoxMenuItem.isSelected() ? null : false );
-
-// alternative method for all frames and menu bars in an application
-//		UIManager.put( "TitlePane.menuBarEmbedded", menuBarEmbeddedCheckBoxMenuItem.isSelected() );
-//		revalidate();
-//		repaint();
+		UIManager.put( "TitlePane.menuBarEmbedded", menuBarEmbeddedCheckBoxMenuItem.isSelected() );
+		FlatLaf.revalidateAndRepaintAllFramesAndDialogs();
 	}
 
 	private void unifiedTitleBar() {
 		UIManager.put( "TitlePane.unifiedBackground", unifiedTitleBarMenuItem.isSelected() );
-		FlatLaf.updateUI();
+		FlatLaf.repaintAllFramesAndDialogs();
 	}
 
 	private void underlineMenuSelection() {
@@ -280,7 +265,7 @@ class DemoFrame
 		// add font sizes
 		fontMenu.addSeparator();
 		ArrayList<String> sizes = new ArrayList<>( Arrays.asList(
-			"10", "12", "14", "16", "18", "20", "24", "28" ) );
+			"10", "11", "12", "14", "16", "18", "20", "24", "28" ) );
 		if( !sizes.contains( currentSize ) )
 			sizes.add( currentSize );
 		sizes.sort( String.CASE_INSENSITIVE_ORDER );
@@ -602,7 +587,7 @@ class DemoFrame
 				optionsMenu.add(menuBarEmbeddedCheckBoxMenuItem);
 
 				//---- unifiedTitleBarMenuItem ----
-				unifiedTitleBarMenuItem.setText("Unified Title Bar");
+				unifiedTitleBarMenuItem.setText("Unified window title bar");
 				unifiedTitleBarMenuItem.addActionListener(e -> unifiedTitleBar());
 				optionsMenu.add(unifiedTitleBarMenuItem);
 
@@ -748,10 +733,20 @@ class DemoFrame
 		copyMenuItem.addActionListener( new DefaultEditorKit.CopyAction() );
 		pasteMenuItem.addActionListener( new DefaultEditorKit.PasteAction() );
 
-		boolean supportsWindowDecorations = UIManager.getLookAndFeel()
-			.getSupportsWindowDecorations() || FlatNativeWindowBorder.isSupported();
-		windowDecorationsCheckBoxMenuItem.setEnabled( supportsWindowDecorations && !JBRCustomDecorations.isSupported() );
-		menuBarEmbeddedCheckBoxMenuItem.setEnabled( supportsWindowDecorations );
+		if( FlatLaf.supportsNativeWindowDecorations() ) {
+			if( JBRCustomDecorations.isSupported() ) {
+				// If the JetBrains Runtime is used, it forces the use of it's own custom
+				// window decoration, which can not disabled.
+				windowDecorationsCheckBoxMenuItem.setEnabled( false );
+			}
+		} else {
+			unsupported( windowDecorationsCheckBoxMenuItem );
+			unsupported( menuBarEmbeddedCheckBoxMenuItem );
+			unsupported( unifiedTitleBarMenuItem );
+		}
+
+		if( SystemInfo.isMacOS )
+			unsupported( underlineMenuSelectionMenuItem );
 
 		// remove contentPanel bottom insets
 		MigLayout layout = (MigLayout) contentPanel.getLayout();
@@ -766,6 +761,12 @@ class DemoFrame
 		layout.setLayoutConstraints( lc );
 	}
 
+	private void unsupported( JCheckBoxMenuItem menuItem ) {
+		menuItem.setEnabled( false );
+		menuItem.setSelected( false );
+		menuItem.setToolTipText( "Not supported on your system." );
+	}
+
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
 	private JMenu fontMenu;
 	private JMenu optionsMenu;

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoFrame.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.3.1.342" Java: "15" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.3.1.342" Java: "16" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -362,7 +362,7 @@ new FormModel {
 					} )
 					add( new FormComponent( "javax.swing.JCheckBoxMenuItem" ) {
 						name: "unifiedTitleBarMenuItem"
-						"text": "Unified Title Bar"
+						"text": "Unified window title bar"
 						auxiliary() {
 							"JavaCodeGenerator.variableLocal": false
 						}

flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/FlatInspector.java

@@ -475,7 +475,7 @@ public class FlatInspector
 				f.setAccessible( true );
 				Object ui = f.get( c );
 				appendRow( buf, "UI", (ui != null ? ui.getClass().getName() : "null") );
-			} catch( NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException ex ) {
+			} catch( Exception ex ) {
 				// ignore
 			}
 		}

flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/resources/EmptyPackage.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2021 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.extras.resources;
+
+/**
+ * The only purpose of this file is to add a .class file to this package to make it non-empty.
+ * Otherwise the compiler outputs a warning because this package is opend in module-info.java.
+ * Also when using --patch-module (e.g. from an IDE), an error would occur for empty packages.
+ *
+ * @author Karl Tauber
+ */
+interface EmptyPackage
+{
+}

flatlaf-jide-oss/src/main/java/com/formdev/flatlaf/jideoss/FlatJideOssDefaultsAddon.java

@@ -21,6 +21,7 @@ import java.util.HashMap;
 import java.util.Map;
 import javax.swing.LookAndFeel;
 import javax.swing.UIDefaults;
+import javax.swing.UIManager;
 import javax.swing.UIDefaults.ActiveValue;
 import com.formdev.flatlaf.FlatDefaultsAddon;
 import com.formdev.flatlaf.FlatLaf;
@@ -70,6 +71,9 @@ public class FlatJideOssDefaultsAddon
 	 * own UI defaults, we have to first remember our UI defaults in the initializer
 	 * (invoked before JIDE overwrites UI defaults) and then restore them in the customizer.
 	 * <p>
+	 * Do not register this class yourself with JIDE.
+	 * It is automatically registered.
+	 * <p>
 	 * Invoked from {@link LookAndFeelFactory#installJideExtension()}.
 	 */
 	public static class FlatJideUIDefaultsCustomizer
@@ -79,6 +83,10 @@ public class FlatJideOssDefaultsAddon
 
 		@Override
 		public void initialize( UIDefaults defaults ) {
+			// do nothing in other Lafs if (wrongly) registered with LookAndFeelFactory.addUIDefaultsInitializer()
+			if( !(UIManager.getLookAndFeel() instanceof FlatLaf) )
+				return;
+
 			jideDefaults = new HashMap<>();
 
 			for( Map.Entry<Object, Object> e : defaults.entrySet() ) {
@@ -96,6 +104,10 @@ public class FlatJideOssDefaultsAddon
 
 		@Override
 		public void customize( UIDefaults defaults ) {
+			// do nothing in other Lafs if (wrongly) registered with LookAndFeelFactory.addUIDefaultsCustomizer()
+			if( !(UIManager.getLookAndFeel() instanceof FlatLaf) )
+				return;
+
 			if( jideDefaults != null ) {
 				defaults.putAll( jideDefaults );
 				jideDefaults = null;

flatlaf-natives/flatlaf-natives-jna/src/main/java/com/formdev/flatlaf/natives/jna/windows/FlatWindowsNativeWindowBorder.java

@@ -183,6 +183,16 @@ public class FlatWindowsNativeWindowBorder
 		wndProc.appIconBounds = (appIconBounds != null) ? new Rectangle( appIconBounds ) : null;
 	}
 
+	@Override
+	public boolean showWindow( Window window, int cmd ) {
+		WndProc wndProc = windowsMap.get( window );
+		if( wndProc == null )
+			return false;
+
+		User32.INSTANCE.ShowWindow( wndProc.hwnd, cmd );
+		return true;
+	}
+
 	@Override
 	public boolean isColorizationColorAffectsBorders() {
 		updateColorization();
@@ -328,7 +338,16 @@ public class FlatWindowsNativeWindowBorder
 				defaultWndProc = User32Ex.INSTANCE.SetWindowLong( hwnd, GWLP_WNDPROC, this );
 
 			// remove the OS window title bar
-			updateFrame();
+			if( window instanceof JFrame && ((JFrame)window).getExtendedState() != 0 ) {
+				// In case that the frame should be maximized or minimized immediately
+				// when showing, then it is necessary to defer ::SetWindowPos() invocation.
+				// Otherwise the frame will not be maximized or minimized.
+				// This occurs only if frame.pack() was no invoked.
+				EventQueue.invokeLater( () -> {
+					updateFrame();
+				});
+			} else
+				updateFrame();
 		}
 
 		void uninstall() {
@@ -348,7 +367,7 @@ public class FlatWindowsNativeWindowBorder
 		private void updateFrame() {
 			// this sends WM_NCCALCSIZE and removes/shows the window title bar
 			User32.INSTANCE.SetWindowPos( hwnd, hwnd, 0, 0, 0, 0,
-				SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER );
+				SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 		}
 
 		/**

flatlaf-natives/flatlaf-natives-windows/src/main/cpp/FlatWndProc.cpp

@@ -45,6 +45,20 @@ JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder
 	FlatWndProc::uninstall( env, obj, reinterpret_cast<HWND>( hwnd ) );
 }
 
+extern "C"
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_updateFrame
+	( JNIEnv* env, jobject obj, jlong hwnd )
+{
+	FlatWndProc::updateFrame( reinterpret_cast<HWND>( hwnd ) );
+}
+
+extern "C"
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_showWindow
+	( JNIEnv* env, jobject obj, jlong hwnd, jint cmd )
+{
+	::ShowWindow( reinterpret_cast<HWND>( hwnd ), cmd );
+}
+
 //---- class FlatWndProc fields -----------------------------------------------
 
 int FlatWndProc::initialized = 0;
@@ -89,9 +103,6 @@ HWND FlatWndProc::install( JNIEnv *env, jobject obj, jobject window ) {
 	fwp->defaultWndProc = reinterpret_cast<WNDPROC>(
 		::SetWindowLongPtr( hwnd, GWLP_WNDPROC, (LONG_PTR) FlatWndProc::StaticWindowProc ) );
 
-	// remove the OS window title bar
-	fwp->updateFrame();
-
 	return hwnd;
 }
 
@@ -109,7 +120,7 @@ void FlatWndProc::uninstall( JNIEnv *env, jobject obj, HWND hwnd ) {
 	::SetWindowLongPtr( hwnd, GWLP_WNDPROC, (LONG_PTR) fwp->defaultWndProc );
 
 	// show the OS window title bar
-	fwp->updateFrame();
+	updateFrame( hwnd );
 
 	// cleanup
 	env->DeleteGlobalRef( fwp->obj );
@@ -134,10 +145,10 @@ void FlatWndProc::initIDs( JNIEnv *env, jobject obj ) {
 	  initialized = 1;
 }
 
-void FlatWndProc::updateFrame() {
+void FlatWndProc::updateFrame( HWND hwnd ) {
 	// this sends WM_NCCALCSIZE and removes/shows the window title bar
 	::SetWindowPos( hwnd, hwnd, 0, 0, 0, 0,
-		SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER );
+		SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 }
 
 LRESULT CALLBACK FlatWndProc::StaticWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) {

flatlaf-natives/flatlaf-natives-windows/src/main/cpp/FlatWndProc.h

@@ -25,6 +25,7 @@ class FlatWndProc
 public:
 	static HWND install( JNIEnv *env, jobject obj, jobject window );
 	static void uninstall( JNIEnv *env, jobject obj, HWND hwnd );
+	static void updateFrame( HWND hwnd );
 
 private:
 	static int initialized;
@@ -42,7 +43,6 @@ private:
 
 	FlatWndProc();
 	static void initIDs( JNIEnv *env, jobject obj );
-	void updateFrame();
 
 	static LRESULT CALLBACK StaticWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
 	LRESULT CALLBACK WindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );

flatlaf-natives/flatlaf-natives-windows/src/main/headers/com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_WndProc.h

@@ -31,6 +31,22 @@ JNIEXPORT jlong JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorde
 JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_uninstallImpl
   (JNIEnv *, jobject, jlong);
 
+/*
+ * Class:     com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_WndProc
+ * Method:    updateFrame
+ * Signature: (J)V
+ */
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_updateFrame
+  (JNIEnv *, jobject, jlong);
+
+/*
+ * Class:     com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_WndProc
+ * Method:    showWindow
+ * Signature: (JI)V
+ */
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_showWindow
+  (JNIEnv *, jobject, jlong, jint);
+
 #ifdef __cplusplus
 }
 #endif

flatlaf-testing/dumps/uidefaults/FlatDarkLaf_1.8.0_202.txt

@@ -1175,6 +1175,7 @@ TitlePane.closePressedBackground #e8112399  60%    javax.swing.plaf.ColorUIResou
 TitlePane.closePressedForeground #ffffff    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.embeddedForeground   #959595    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.foreground           #bbbbbb    javax.swing.plaf.ColorUIResource [UI]
+TitlePane.icon                 [lazy] 16,16    sun.swing.ImageIconUIResource [UI]  (sun.awt.image.ToolkitImage)
 TitlePane.iconMargins          3,8,3,8    javax.swing.plaf.InsetsUIResource [UI]
 TitlePane.iconSize             16,16    javax.swing.plaf.DimensionUIResource [UI]
 TitlePane.iconifyIcon          [lazy] 44,30    com.formdev.flatlaf.icons.FlatWindowIconifyIcon [UI]

flatlaf-testing/dumps/uidefaults/FlatLightLaf_1.8.0_202.txt

@@ -1180,6 +1180,7 @@ TitlePane.closePressedBackground #e8112399  60%    javax.swing.plaf.ColorUIResou
 TitlePane.closePressedForeground #ffffff    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.embeddedForeground   #595959    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.foreground           #000000    javax.swing.plaf.ColorUIResource [UI]
+TitlePane.icon                 [lazy] 16,16    sun.swing.ImageIconUIResource [UI]  (sun.awt.image.ToolkitImage)
 TitlePane.iconMargins          3,8,3,8    javax.swing.plaf.InsetsUIResource [UI]
 TitlePane.iconSize             16,16    javax.swing.plaf.DimensionUIResource [UI]
 TitlePane.iconifyIcon          [lazy] 44,30    com.formdev.flatlaf.icons.FlatWindowIconifyIcon [UI]

flatlaf-testing/dumps/uidefaults/FlatTestLaf_1.8.0_202.txt

@@ -1165,6 +1165,7 @@ TextPaneUI                     com.formdev.flatlaf.ui.FlatTextPaneUI
 #---- TitlePane ----
 
 TitlePane.background           #00ff00    javax.swing.plaf.ColorUIResource [UI]
+TitlePane.borderColor          #ff0000    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.buttonMaximizedHeight 22
 TitlePane.buttonSize           44,30    javax.swing.plaf.DimensionUIResource [UI]
 TitlePane.centerTitle          false
@@ -1175,6 +1176,7 @@ TitlePane.closeIcon            [lazy] 44,30    com.formdev.flatlaf.icons.FlatWin
 TitlePane.closePressedBackground #e8112399  60%    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.closePressedForeground #ffffff    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.foreground           #0000ff    javax.swing.plaf.ColorUIResource [UI]
+TitlePane.icon                 [lazy] 16,16    sun.swing.ImageIconUIResource [UI]  (sun.awt.image.ToolkitImage)
 TitlePane.iconMargins          3,8,3,8    javax.swing.plaf.InsetsUIResource [UI]
 TitlePane.iconSize             16,16    javax.swing.plaf.DimensionUIResource [UI]
 TitlePane.iconifyIcon          [lazy] 44,30    com.formdev.flatlaf.icons.FlatWindowIconifyIcon [UI]

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatNativeWindowBorderTest.java

@@ -26,10 +26,18 @@ import java.awt.event.WindowEvent;
 import java.awt.event.WindowListener;
 import java.util.WeakHashMap;
 import javax.swing.*;
+import javax.swing.plaf.metal.MetalLookAndFeel;
+import javax.swing.plaf.nimbus.NimbusLookAndFeel;
+import com.formdev.flatlaf.FlatClientProperties;
+import com.formdev.flatlaf.FlatDarculaLaf;
+import com.formdev.flatlaf.FlatDarkLaf;
+import com.formdev.flatlaf.FlatIntelliJLaf;
+import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.FlatLightLaf;
 import com.formdev.flatlaf.extras.FlatInspector;
+import com.formdev.flatlaf.extras.components.FlatTriStateCheckBox;
 import com.formdev.flatlaf.ui.FlatLineBorder;
-import com.formdev.flatlaf.ui.FlatNativeWindowBorder;
+import com.formdev.flatlaf.util.SystemInfo;
 import net.miginfocom.swing.*;
 
 /**
@@ -63,7 +71,7 @@ public class FlatNativeWindowBorderTest
 			frame.dispose();
 		}, KeyStroke.getKeyStroke( KeyEvent.VK_ESCAPE, 0, false ), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
 
-		frame.pack();
+		frame.setSize( new Dimension( 800, 600 ) );
 		frame.setLocationRelativeTo( null );
 		int offset = 20 * Window.getWindows().length;
 		frame.setLocation( frame.getX() + offset, frame.getY() + offset );
@@ -80,7 +88,7 @@ public class FlatNativeWindowBorderTest
 			dialog.dispose();
 		}, KeyStroke.getKeyStroke( KeyEvent.VK_ESCAPE, 0, false ), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
 
-		dialog.pack();
+		dialog.setSize( new Dimension( 800, 600 ) );
 		dialog.setLocationRelativeTo( owner );
 		dialog.setLocation( dialog.getX() + 20, dialog.getY() + 20 );
 		dialog.setVisible( true );
@@ -96,7 +104,6 @@ public class FlatNativeWindowBorderTest
 			hideWindowButton.setEnabled( false );
 
 		setBorder( new FlatLineBorder( new Insets( 0, 0, 0, 0 ), Color.red ) );
-		setPreferredSize( new Dimension( 800, 600 ) );
 
 		updateInfo();
 
@@ -144,6 +151,26 @@ public class FlatNativeWindowBorderTest
 				System.out.println( windowId + " windowDeactivated" );
 			}
 		} );
+
+		window.addWindowStateListener( e -> {
+			System.out.println( windowId + " windowStateChanged  " + e.getOldState() + " --> " + e.getNewState() );
+		} );
+
+		registerSwitchToLookAndFeel( "F1", FlatLightLaf.class.getName() );
+		registerSwitchToLookAndFeel( "F2", FlatDarkLaf.class.getName() );
+		registerSwitchToLookAndFeel( "F3", FlatIntelliJLaf.class.getName() );
+		registerSwitchToLookAndFeel( "F4", FlatDarculaLaf.class.getName() );
+
+		registerSwitchToLookAndFeel( "F8", FlatTestLaf.class.getName() );
+
+		if( SystemInfo.isWindows )
+			registerSwitchToLookAndFeel( "F9", "com.sun.java.swing.plaf.windows.WindowsLookAndFeel" );
+		else if( SystemInfo.isMacOS )
+			registerSwitchToLookAndFeel( "F9", "com.apple.laf.AquaLookAndFeel" );
+		else if( SystemInfo.isLinux )
+			registerSwitchToLookAndFeel( "F9", "com.sun.java.swing.plaf.gtk.GTKLookAndFeel" );
+		registerSwitchToLookAndFeel( "F12", MetalLookAndFeel.class.getName() );
+		registerSwitchToLookAndFeel( "F11", NimbusLookAndFeel.class.getName() );
 	}
 
 	private void updateInfo() {
@@ -220,6 +247,28 @@ public class FlatNativeWindowBorderTest
 			(r1.y + r1.height) - (r2.y + r2.height) );
 	}
 
+	private void registerSwitchToLookAndFeel( String keyStrokeStr, String lafClassName ) {
+		KeyStroke keyStroke = KeyStroke.getKeyStroke( keyStrokeStr );
+		if( keyStroke == null )
+			throw new IllegalArgumentException( "Invalid key stroke '" + keyStrokeStr + "'" );
+
+		((JComponent)((RootPaneContainer)window).getContentPane()).registerKeyboardAction(
+			e -> applyLookAndFeel( lafClassName ),
+			keyStroke,
+			JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
+	}
+
+	private void applyLookAndFeel( String lafClassName ) {
+		EventQueue.invokeLater( () -> {
+			try {
+				UIManager.setLookAndFeel( lafClassName );
+				FlatLaf.updateUI();
+			} catch( Exception ex ) {
+				ex.printStackTrace();
+			}
+		} );
+	}
+
 	private void resizableChanged() {
 		if( window instanceof Frame )
 			((Frame)window).setResizable( resizableCheckBox.isSelected() );
@@ -255,7 +304,11 @@ public class FlatNativeWindowBorderTest
 	}
 
 	private void nativeChanged() {
-		FlatNativeWindowBorder.setHasCustomDecoration( window, nativeCheckBox.isSelected() );
+		FlatLaf.setUseNativeWindowDecorations( nativeCheckBox.isSelected() );
+	}
+
+	private void native2Changed() {
+		((RootPaneContainer)window).getRootPane().putClientProperty( FlatClientProperties.USE_WINDOW_DECORATIONS, native2CheckBox.getChecked() );
 	}
 
 	private void revalidateLayout() {
@@ -298,6 +351,23 @@ public class FlatNativeWindowBorderTest
 		}
 	}
 
+	private void reopen() {
+		window.dispose();
+		window.setVisible( true );
+	}
+
+	private void reshow() {
+		window.setVisible( false );
+
+		try {
+			Thread.sleep( 100 );
+		} catch( InterruptedException ex ) {
+			// ignore
+		}
+
+		window.setVisible( true );
+	}
+
 	private void close() {
 		window.dispose();
 	}
@@ -310,12 +380,15 @@ public class FlatNativeWindowBorderTest
 		undecoratedCheckBox = new JCheckBox();
 		fullScreenCheckBox = new JCheckBox();
 		nativeCheckBox = new JCheckBox();
-		revalidateButton = new JButton();
-		replaceRootPaneButton = new JButton();
+		native2CheckBox = new FlatTriStateCheckBox();
 		openDialogButton = new JButton();
-		openFrameButton = new JButton();
 		hideWindowButton = new JButton();
+		reopenButton = new JButton();
+		replaceRootPaneButton = new JButton();
+		openFrameButton = new JButton();
 		showHiddenWindowButton = new JButton();
+		reshowButton = new JButton();
+		revalidateButton = new JButton();
 		hSpacer1 = new JPanel(null);
 		closeButton = new JButton();
 
@@ -331,6 +404,7 @@ public class FlatNativeWindowBorderTest
 			"[]0" +
 			"[]0" +
 			"[]" +
+			"[]" +
 			"[]"));
 
 		//---- info ----
@@ -368,15 +442,10 @@ public class FlatNativeWindowBorderTest
 		nativeCheckBox.addActionListener(e -> nativeChanged());
 		add(nativeCheckBox, "cell 0 3 3 1");
 
-		//---- revalidateButton ----
-		revalidateButton.setText("revalidate");
-		revalidateButton.addActionListener(e -> revalidateLayout());
-		add(revalidateButton, "cell 0 3 3 1");
-
-		//---- replaceRootPaneButton ----
-		replaceRootPaneButton.setText("replace rootpane");
-		replaceRootPaneButton.addActionListener(e -> replaceRootPane());
-		add(replaceRootPaneButton, "cell 0 3 3 1");
+		//---- native2CheckBox ----
+		native2CheckBox.setText("JRootPane.useWindowDecorations");
+		native2CheckBox.addActionListener(e -> native2Changed());
+		add(native2CheckBox, "cell 0 3 3 1");
 
 		//---- openDialogButton ----
 		openDialogButton.setText("Open Dialog");
@@ -384,27 +453,47 @@ public class FlatNativeWindowBorderTest
 		openDialogButton.addActionListener(e -> openDialog());
 		add(openDialogButton, "cell 0 4 3 1");
 
-		//---- openFrameButton ----
-		openFrameButton.setText("Open Frame");
-		openFrameButton.setMnemonic('A');
-		openFrameButton.addActionListener(e -> openFrame());
-		add(openFrameButton, "cell 0 4 3 1");
-
 		//---- hideWindowButton ----
 		hideWindowButton.setText("Hide");
 		hideWindowButton.addActionListener(e -> hideWindow());
 		add(hideWindowButton, "cell 0 4 3 1");
 
+		//---- reopenButton ----
+		reopenButton.setText("Dispose and Reopen");
+		reopenButton.addActionListener(e -> reopen());
+		add(reopenButton, "cell 0 4 3 1");
+
+		//---- replaceRootPaneButton ----
+		replaceRootPaneButton.setText("replace rootpane");
+		replaceRootPaneButton.addActionListener(e -> replaceRootPane());
+		add(replaceRootPaneButton, "cell 0 4 3 1");
+
+		//---- openFrameButton ----
+		openFrameButton.setText("Open Frame");
+		openFrameButton.setMnemonic('A');
+		openFrameButton.addActionListener(e -> openFrame());
+		add(openFrameButton, "cell 0 5 3 1");
+
 		//---- showHiddenWindowButton ----
 		showHiddenWindowButton.setText("Show hidden");
 		showHiddenWindowButton.addActionListener(e -> showHiddenWindow());
-		add(showHiddenWindowButton, "cell 0 4 3 1");
-		add(hSpacer1, "cell 0 4 3 1,growx");
+		add(showHiddenWindowButton, "cell 0 5 3 1");
+
+		//---- reshowButton ----
+		reshowButton.setText("Hide and Show");
+		reshowButton.addActionListener(e -> reshow());
+		add(reshowButton, "cell 0 5 3 1");
+
+		//---- revalidateButton ----
+		revalidateButton.setText("revalidate");
+		revalidateButton.addActionListener(e -> revalidateLayout());
+		add(revalidateButton, "cell 0 5 3 1");
+		add(hSpacer1, "cell 0 5 3 1,growx");
 
 		//---- closeButton ----
 		closeButton.setText("Close");
 		closeButton.addActionListener(e -> close());
-		add(closeButton, "cell 0 4 3 1");
+		add(closeButton, "cell 0 5 3 1");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
 	}
 
@@ -415,12 +504,15 @@ public class FlatNativeWindowBorderTest
 	private JCheckBox undecoratedCheckBox;
 	private JCheckBox fullScreenCheckBox;
 	private JCheckBox nativeCheckBox;
-	private JButton revalidateButton;
-	private JButton replaceRootPaneButton;
+	private FlatTriStateCheckBox native2CheckBox;
 	private JButton openDialogButton;
-	private JButton openFrameButton;
 	private JButton hideWindowButton;
+	private JButton reopenButton;
+	private JButton replaceRootPaneButton;
+	private JButton openFrameButton;
 	private JButton showHiddenWindowButton;
+	private JButton reshowButton;
+	private JButton revalidateButton;
 	private JPanel hSpacer1;
 	private JButton closeButton;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatNativeWindowBorderTest.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.3.1.342" Java: "15" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.3.1.342" Java: "16" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -6,7 +6,7 @@ new FormModel {
 		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "insets dialog,hidemode 3"
 			"$columnConstraints": "[][][grow,fill]"
-			"$rowConstraints": "[grow,top]para[]0[]0[][]"
+			"$rowConstraints": "[grow,top]para[]0[]0[][][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JLabel" ) {
@@ -65,17 +65,10 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 3 3 1"
 			} )
-			add( new FormComponent( "javax.swing.JButton" ) {
-				name: "revalidateButton"
-				"text": "revalidate"
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "revalidateLayout", false ) )
-			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 3 3 1"
-			} )
-			add( new FormComponent( "javax.swing.JButton" ) {
-				name: "replaceRootPaneButton"
-				"text": "replace rootpane"
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "replaceRootPane", false ) )
+			add( new FormComponent( "com.formdev.flatlaf.extras.components.FlatTriStateCheckBox" ) {
+				name: "native2CheckBox"
+				"text": "JRootPane.useWindowDecorations"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "native2Changed", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 3 3 1"
 			} )
@@ -87,14 +80,6 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 4 3 1"
 			} )
-			add( new FormComponent( "javax.swing.JButton" ) {
-				name: "openFrameButton"
-				"text": "Open Frame"
-				"mnemonic": 65
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openFrame", false ) )
-			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4 3 1"
-			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "hideWindowButton"
 				"text": "Hide"
@@ -102,28 +87,64 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 4 3 1"
 			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "reopenButton"
+				"text": "Dispose and Reopen"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "reopen", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4 3 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "replaceRootPaneButton"
+				"text": "replace rootpane"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "replaceRootPane", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4 3 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "openFrameButton"
+				"text": "Open Frame"
+				"mnemonic": 65
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openFrame", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 5 3 1"
+			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "showHiddenWindowButton"
 				"text": "Show hidden"
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showHiddenWindow", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4 3 1"
+				"value": "cell 0 5 3 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "reshowButton"
+				"text": "Hide and Show"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "reshow", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 5 3 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "revalidateButton"
+				"text": "revalidate"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "revalidateLayout", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 5 3 1"
 			} )
 			add( new FormComponent( "com.jformdesigner.designer.wrapper.HSpacer" ) {
 				name: "hSpacer1"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4 3 1,growx"
+				"value": "cell 0 5 3 1,growx"
 			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "closeButton"
 				"text": "Close"
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "close", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4 3 1"
+				"value": "cell 0 5 3 1"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 500, 300 )
+			"size": new java.awt.Dimension( 520, 300 )
 		} )
 	}
 }

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatTextComponentsTest.java

@@ -74,6 +74,10 @@ public class FlatTextComponentsTest
 		JComboBox<String> comboBox3 = new JComboBox<>();
 		JLabel spinnerLabel = new JLabel();
 		JSpinner spinner1 = new JSpinner();
+		JSpinner spinner2 = new JSpinner();
+		JSpinner spinner3 = new JSpinner();
+		JComboBox<String> comboBox2 = new JComboBox<>();
+		JComboBox<String> comboBox4 = new JComboBox<>();
 		JPopupMenu popupMenu1 = new JPopupMenu();
 		JMenuItem cutMenuItem = new JMenuItem();
 		JMenuItem copyMenuItem = new JMenuItem();
@@ -97,6 +101,10 @@ public class FlatTextComponentsTest
 			"[50,fill]" +
 			"[50,fill]" +
 			"[]" +
+			"[]para" +
+			"[]" +
+			"[]" +
+			"[]" +
 			"[]"));
 
 		//---- textFieldLabel ----
@@ -307,6 +315,24 @@ public class FlatTextComponentsTest
 		spinner1.setName("spinner1");
 		add(spinner1, "cell 1 7,growx");
 
+		//---- spinner2 ----
+		spinner2.setName("spinner2");
+		add(spinner2, "cell 1 8,growx,height 40");
+
+		//---- spinner3 ----
+		spinner3.setName("spinner3");
+		add(spinner3, "cell 1 9,growx,hmax 14");
+
+		//---- comboBox2 ----
+		comboBox2.setEditable(true);
+		comboBox2.setName("comboBox2");
+		add(comboBox2, "cell 1 10,growx,height 40");
+
+		//---- comboBox4 ----
+		comboBox4.setEditable(true);
+		comboBox4.setName("comboBox4");
+		add(comboBox4, "cell 1 11,growx,hmax 14");
+
 		//======== popupMenu1 ========
 		{
 			popupMenu1.setName("popupMenu1");

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatTextComponentsTest.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.0.0.194" Java: "13.0.1" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.3.1.342" Java: "16" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -10,7 +10,7 @@ new FormModel {
 		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "ltr,insets dialog,hidemode 3"
 			"$columnConstraints": "[][][::100][100,fill][fill]"
-			"$rowConstraints": "[][][][50,fill][50,fill][50,fill][][]"
+			"$rowConstraints": "[][][][50,fill][50,fill][50,fill][][]para[][][][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JLabel" ) {
@@ -233,9 +233,37 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 7,growx"
 			} )
+			add( new FormComponent( "javax.swing.JSpinner" ) {
+				name: "spinner2"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 8,growx,height 40"
+			} )
+			add( new FormComponent( "javax.swing.JSpinner" ) {
+				name: "spinner3"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 9,growx,hmax 14"
+			} )
+			add( new FormComponent( "javax.swing.JComboBox" ) {
+				name: "comboBox2"
+				"editable": true
+				auxiliary() {
+					"JavaCodeGenerator.typeParameters": "String"
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 10,growx,height 40"
+			} )
+			add( new FormComponent( "javax.swing.JComboBox" ) {
+				name: "comboBox4"
+				"editable": true
+				auxiliary() {
+					"JavaCodeGenerator.typeParameters": "String"
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 11,growx,hmax 14"
+			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 530, 340 )
+			"size": new java.awt.Dimension( 530, 580 )
 		} )
 		add( new FormContainer( "javax.swing.JPopupMenu", new FormLayoutManager( class javax.swing.JPopupMenu ) ) {
 			name: "popupMenu1"
@@ -252,7 +280,7 @@ new FormModel {
 				"text": "Paste"
 			} )
 		}, new FormLayoutConstraints( null ) {
-			"location": new java.awt.Point( 0, 390 )
+			"location": new java.awt.Point( 0, 680 )
 			"size": new java.awt.Dimension( 91, 87 )
 		} )
 	}

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatWindowDecorationsTest.java

@@ -25,7 +25,6 @@ import java.util.List;
 import java.util.Random;
 import javax.swing.*;
 import com.formdev.flatlaf.FlatClientProperties;
-import com.formdev.flatlaf.FlatLaf;
 import net.miginfocom.swing.*;
 
 /**
@@ -36,17 +35,9 @@ public class FlatWindowDecorationsTest
 {
 	public static void main( String[] args ) {
 		SwingUtilities.invokeLater( () -> {
-			// enable custom window decoration (if LaF supports it)
-			JFrame.setDefaultLookAndFeelDecorated( true );
-			JDialog.setDefaultLookAndFeelDecorated( true );
-
 			FlatTestFrame frame = FlatTestFrame.create( args, "FlatWindowDecorationsTest" );
 			frame.applyComponentOrientationToFrame = true;
 
-			// WARNING: Do not this in real-world programs.
-//			frame.setUndecorated( true );
-//			frame.getRootPane().setWindowDecorationStyle( JRootPane.FRAME );
-
 			Class<?> cls = FlatWindowDecorationsTest.class;
 			List<Image> images = Arrays.asList(
 				new ImageIcon( cls.getResource( "/com/formdev/flatlaf/testing/test16.png" ) ).getImage(),
@@ -75,14 +66,14 @@ public class FlatWindowDecorationsTest
 		super.addNotify();
 
 		Window window = SwingUtilities.windowForComponent( this );
-		menuBarCheckBox.setEnabled( window instanceof JFrame );
-		menuBarEmbeddedCheckBox.setEnabled( window instanceof JFrame );
-		menuBarVisibleCheckBox.setEnabled( window instanceof JFrame );
+		menuBarCheckBox.setSelected( window instanceof JFrame );
 		maximizedBoundsCheckBox.setEnabled( window instanceof Frame );
 
 		addMenuButton.setEnabled( menuBarCheckBox.isEnabled() );
+		addGlueButton.setEnabled( menuBarCheckBox.isEnabled() );
 		removeMenuButton.setEnabled( menuBarCheckBox.isEnabled() );
 		changeMenuButton.setEnabled( menuBarCheckBox.isEnabled() );
+		changeTitleButton.setEnabled( menuBarCheckBox.isEnabled() );
 
 		boolean windowHasIcons = (window != null && !window.getIconImages().isEmpty());
 		iconNoneRadioButton.setEnabled( windowHasIcons );
@@ -112,16 +103,19 @@ public class FlatWindowDecorationsTest
 
 	private void unifiedBackgroundChanged() {
 		UIManager.put( "TitlePane.unifiedBackground", unifiedBackgroundCheckBox.isSelected() );
-		FlatLaf.updateUI();
+		Window window = SwingUtilities.windowForComponent( this );
+		if( window != null )
+			window.repaint();
 	}
 
 	private void menuBarChanged() {
 		Window window = SwingUtilities.windowForComponent( this );
-		if( window instanceof JFrame ) {
+		if( window instanceof JFrame )
 			((JFrame)window).setJMenuBar( menuBarCheckBox.isSelected() ? menuBar : null );
-			window.revalidate();
-			window.repaint();
-		}
+		else if( window instanceof JDialog )
+			((JDialog)window).setJMenuBar( menuBarCheckBox.isSelected() ? menuBar : null );
+		window.revalidate();
+		window.repaint();
 	}
 
 	private void menuBarEmbeddedChanged() {
@@ -134,6 +128,58 @@ public class FlatWindowDecorationsTest
 		menuBar.setVisible( menuBarVisibleCheckBox.isSelected() );
 	}
 
+	private void rightCompChanged() {
+		removeNonMenusFromMenuBar();
+
+		if( rightCompCheckBox.isSelected() ) {
+			rightStretchCompCheckBox.setSelected( false );
+
+			JButton myButton = new JButton( "?" );
+			myButton.putClientProperty( "JButton.buttonType", "toolBarButton" );
+			myButton.setFocusable( false );
+
+			menuBar.add( Box.createGlue() );
+			menuBar.add( myButton );
+		}
+
+		menuBar.revalidate();
+		menuBar.repaint();
+	}
+
+	private void rightStretchCompChanged() {
+		removeNonMenusFromMenuBar();
+
+		if( rightStretchCompCheckBox.isSelected() ) {
+			rightCompCheckBox.setSelected( false );
+
+			menuBar.add( Box.createGlue() );
+			menuBar.add( new JProgressBar() );
+		}
+
+		menuBar.revalidate();
+		menuBar.repaint();
+	}
+
+	private void removeNonMenusFromMenuBar() {
+		Component[] components = menuBar.getComponents();
+		for( int i = components.length - 1; i >= 0; i-- ) {
+			if( !(components[i] instanceof JMenu) )
+				menuBar.remove( i );
+			else
+				break;
+		}
+	}
+
+	private void colorizeTitleBar() {
+		JRootPane rootPane = getWindowRootPane();
+		if( rootPane == null )
+			return;
+
+		boolean colorize = colorizeTitleBarCheckBox.isSelected();
+		rootPane.putClientProperty( FlatClientProperties.TITLE_BAR_BACKGROUND, colorize ? Color.green : null );
+		rootPane.putClientProperty( FlatClientProperties.TITLE_BAR_FOREGROUND, colorize ? Color.blue : null );
+	}
+
 	private void colorizeMenuBar() {
 		boolean colorize = colorizeMenuBarCheckBox.isSelected();
 		Color menuBarBackground = colorize ? new Color( 0xffccff ) : UIManager.getColor( "MenuBar.background" );
@@ -250,7 +296,7 @@ public class FlatWindowDecorationsTest
 
 	private void openDialog() {
 		Window owner = SwingUtilities.windowForComponent( this );
-		JDialog dialog = new JDialog( owner, "Dialog", ModalityType.APPLICATION_MODAL );
+		JDialog dialog = new JDialog( owner, "Dialog", ModalityType.DOCUMENT_MODAL );
 		dialog.setDefaultCloseOperation( JDialog.DISPOSE_ON_CLOSE );
 		dialog.add( new FlatWindowDecorationsTest() );
 		dialog.pack();
@@ -258,6 +304,17 @@ public class FlatWindowDecorationsTest
 		dialog.setVisible( true );
 	}
 
+	private void openFrame() {
+		FlatWindowDecorationsTest comp = new FlatWindowDecorationsTest();
+		JFrame frame = new JFrame( "Frame" );
+		frame.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
+		frame.add( comp );
+		frame.setJMenuBar( comp.menuBar );
+		frame.pack();
+		frame.setLocationRelativeTo( this );
+		frame.setVisible( true );
+	}
+
 	private void decorationStyleChanged() {
 		int style;
 		if( styleFrameRadioButton.isSelected() )
@@ -312,17 +369,20 @@ public class FlatWindowDecorationsTest
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
 		menuBarCheckBox = new JCheckBox();
-		unifiedBackgroundCheckBox = new JCheckBox();
+		rightCompCheckBox = new JCheckBox();
 		JPanel panel3 = new JPanel();
 		addMenuButton = new JButton();
-		JButton addGlueButton = new JButton();
+		addGlueButton = new JButton();
 		removeMenuButton = new JButton();
 		changeMenuButton = new JButton();
-		JButton changeTitleButton = new JButton();
+		changeTitleButton = new JButton();
 		menuBarEmbeddedCheckBox = new JCheckBox();
-		colorizeMenuBarCheckBox = new JCheckBox();
+		rightStretchCompCheckBox = new JCheckBox();
 		menuBarVisibleCheckBox = new JCheckBox();
+		colorizeMenuBarCheckBox = new JCheckBox();
+		unifiedBackgroundCheckBox = new JCheckBox();
 		colorizeMenusCheckBox = new JCheckBox();
+		colorizeTitleBarCheckBox = new JCheckBox();
 		resizableCheckBox = new JCheckBox();
 		maximizedBoundsCheckBox = new JCheckBox();
 		undecoratedCheckBox = new JCheckBox();
@@ -344,6 +404,7 @@ public class FlatWindowDecorationsTest
 		iconTestAllRadioButton = new JRadioButton();
 		iconTestRandomRadioButton = new JRadioButton();
 		JButton openDialogButton = new JButton();
+		JButton openFrameButton = new JButton();
 		menuBar = new JMenuBar();
 		JMenu fileMenu = new JMenu();
 		JMenuItem newMenuItem = new JMenuItem();
@@ -381,6 +442,8 @@ public class FlatWindowDecorationsTest
 			// rows
 			"para[]0" +
 			"[]0" +
+			"[]0" +
+			"[]0" +
 			"[]unrel" +
 			"[]0" +
 			"[]unrel" +
@@ -394,10 +457,10 @@ public class FlatWindowDecorationsTest
 		menuBarCheckBox.addActionListener(e -> menuBarChanged());
 		add(menuBarCheckBox, "cell 0 0");
 
-		//---- unifiedBackgroundCheckBox ----
-		unifiedBackgroundCheckBox.setText("unified background");
-		unifiedBackgroundCheckBox.addActionListener(e -> unifiedBackgroundChanged());
-		add(unifiedBackgroundCheckBox, "cell 1 0");
+		//---- rightCompCheckBox ----
+		rightCompCheckBox.setText("right aligned component");
+		rightCompCheckBox.addActionListener(e -> rightCompChanged());
+		add(rightCompCheckBox, "cell 1 0");
 
 		//======== panel3 ========
 		{
@@ -437,7 +500,7 @@ public class FlatWindowDecorationsTest
 			changeTitleButton.addActionListener(e -> changeTitle());
 			panel3.add(changeTitleButton, "cell 0 4");
 		}
-		add(panel3, "cell 2 0 1 6,aligny top,growy 0");
+		add(panel3, "cell 2 0 1 8,aligny top,growy 0");
 
 		//---- menuBarEmbeddedCheckBox ----
 		menuBarEmbeddedCheckBox.setText("embedded menu bar");
@@ -445,10 +508,10 @@ public class FlatWindowDecorationsTest
 		menuBarEmbeddedCheckBox.addActionListener(e -> menuBarEmbeddedChanged());
 		add(menuBarEmbeddedCheckBox, "cell 0 1");
 
-		//---- colorizeMenuBarCheckBox ----
-		colorizeMenuBarCheckBox.setText("colorize menu bar");
-		colorizeMenuBarCheckBox.addActionListener(e -> colorizeMenuBar());
-		add(colorizeMenuBarCheckBox, "cell 1 1");
+		//---- rightStretchCompCheckBox ----
+		rightStretchCompCheckBox.setText("right aligned stretching component");
+		rightStretchCompCheckBox.addActionListener(e -> rightStretchCompChanged());
+		add(rightStretchCompCheckBox, "cell 1 1");
 
 		//---- menuBarVisibleCheckBox ----
 		menuBarVisibleCheckBox.setText("menu bar visible");
@@ -456,39 +519,54 @@ public class FlatWindowDecorationsTest
 		menuBarVisibleCheckBox.addActionListener(e -> menuBarVisibleChanged());
 		add(menuBarVisibleCheckBox, "cell 0 2");
 
+		//---- colorizeMenuBarCheckBox ----
+		colorizeMenuBarCheckBox.setText("colorize menu bar");
+		colorizeMenuBarCheckBox.addActionListener(e -> colorizeMenuBar());
+		add(colorizeMenuBarCheckBox, "cell 1 2");
+
+		//---- unifiedBackgroundCheckBox ----
+		unifiedBackgroundCheckBox.setText("unified background");
+		unifiedBackgroundCheckBox.addActionListener(e -> unifiedBackgroundChanged());
+		add(unifiedBackgroundCheckBox, "cell 0 3");
+
 		//---- colorizeMenusCheckBox ----
 		colorizeMenusCheckBox.setText("colorize menus");
 		colorizeMenusCheckBox.addActionListener(e -> colorizeMenus());
-		add(colorizeMenusCheckBox, "cell 1 2");
+		add(colorizeMenusCheckBox, "cell 1 3");
+
+		//---- colorizeTitleBarCheckBox ----
+		colorizeTitleBarCheckBox.setText("colorize title bar");
+		colorizeTitleBarCheckBox.addActionListener(e -> colorizeTitleBar());
+		add(colorizeTitleBarCheckBox, "cell 0 4");
 
 		//---- resizableCheckBox ----
 		resizableCheckBox.setText("resizable");
 		resizableCheckBox.setSelected(true);
 		resizableCheckBox.addActionListener(e -> resizableChanged());
-		add(resizableCheckBox, "cell 0 3");
+		add(resizableCheckBox, "cell 0 5");
 
 		//---- maximizedBoundsCheckBox ----
 		maximizedBoundsCheckBox.setText("maximized bounds (50,100, 1000,700)");
 		maximizedBoundsCheckBox.addActionListener(e -> maximizedBoundsChanged());
-		add(maximizedBoundsCheckBox, "cell 1 3");
+		add(maximizedBoundsCheckBox, "cell 1 5");
 
 		//---- undecoratedCheckBox ----
 		undecoratedCheckBox.setText("undecorated");
 		undecoratedCheckBox.addActionListener(e -> undecoratedChanged());
-		add(undecoratedCheckBox, "cell 0 4");
+		add(undecoratedCheckBox, "cell 0 6");
 
 		//---- fullScreenCheckBox ----
 		fullScreenCheckBox.setText("full screen");
 		fullScreenCheckBox.addActionListener(e -> fullScreenChanged());
-		add(fullScreenCheckBox, "cell 1 4");
+		add(fullScreenCheckBox, "cell 1 6");
 
 		//---- label1 ----
 		label1.setText("Style:");
-		add(label1, "cell 0 5");
+		add(label1, "cell 0 7");
 
 		//---- label2 ----
 		label2.setText("Icon:");
-		add(label2, "cell 1 5");
+		add(label2, "cell 1 7");
 
 		//======== panel1 ========
 		{
@@ -553,7 +631,7 @@ public class FlatWindowDecorationsTest
 			styleFileChooserRadioButton.addActionListener(e -> decorationStyleChanged());
 			panel1.add(styleFileChooserRadioButton, "cell 0 8");
 		}
-		add(panel1, "cell 0 6");
+		add(panel1, "cell 0 8");
 
 		//======== panel2 ========
 		{
@@ -582,12 +660,18 @@ public class FlatWindowDecorationsTest
 			iconTestRandomRadioButton.addActionListener(e -> iconChanged());
 			panel2.add(iconTestRandomRadioButton, "cell 0 2");
 		}
-		add(panel2, "cell 1 6");
+		add(panel2, "cell 1 8");
 
 		//---- openDialogButton ----
 		openDialogButton.setText("Open Dialog");
 		openDialogButton.addActionListener(e -> openDialog());
-		add(openDialogButton, "cell 0 7");
+		add(openDialogButton, "cell 0 9 2 1");
+
+		//---- openFrameButton ----
+		openFrameButton.setText("Open Frame");
+		openFrameButton.setMnemonic('A');
+		openFrameButton.addActionListener(e -> openFrame());
+		add(openFrameButton, "cell 0 9 2 1");
 
 		//======== menuBar ========
 		{
@@ -779,14 +863,19 @@ public class FlatWindowDecorationsTest
 
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
 	private JCheckBox menuBarCheckBox;
-	private JCheckBox unifiedBackgroundCheckBox;
+	private JCheckBox rightCompCheckBox;
 	private JButton addMenuButton;
+	private JButton addGlueButton;
 	private JButton removeMenuButton;
 	private JButton changeMenuButton;
+	private JButton changeTitleButton;
 	private JCheckBox menuBarEmbeddedCheckBox;
-	private JCheckBox colorizeMenuBarCheckBox;
+	private JCheckBox rightStretchCompCheckBox;
 	private JCheckBox menuBarVisibleCheckBox;
+	private JCheckBox colorizeMenuBarCheckBox;
+	private JCheckBox unifiedBackgroundCheckBox;
 	private JCheckBox colorizeMenusCheckBox;
+	private JCheckBox colorizeTitleBarCheckBox;
 	private JCheckBox resizableCheckBox;
 	private JCheckBox maximizedBoundsCheckBox;
 	private JCheckBox undecoratedCheckBox;

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatWindowDecorationsTest.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.3.1.342" Java: "15" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.3.1.342" Java: "16" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -9,7 +9,7 @@ new FormModel {
 		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "ltr,insets dialog,hidemode 3"
 			"$columnConstraints": "[left]para[left][fill]"
-			"$rowConstraints": "para[]0[]0[]unrel[]0[]unrel[][top][]"
+			"$rowConstraints": "para[]0[]0[]0[]0[]unrel[]0[]unrel[][top][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
@@ -24,12 +24,12 @@ new FormModel {
 				"value": "cell 0 0"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
-				name: "unifiedBackgroundCheckBox"
-				"text": "unified background"
+				name: "rightCompCheckBox"
+				"text": "right aligned component"
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "unifiedBackgroundChanged", false ) )
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "rightCompChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 0"
 			} )
@@ -52,6 +52,9 @@ new FormModel {
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "addGlueButton"
 					"text": "Add glue"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "addGlue", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 					"value": "cell 0 1"
@@ -79,12 +82,15 @@ new FormModel {
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "changeTitleButton"
 					"text": "Change title"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "changeTitle", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 					"value": "cell 0 4"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 0 1 6,aligny top,growy 0"
+				"value": "cell 2 0 1 8,aligny top,growy 0"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "menuBarEmbeddedCheckBox"
@@ -98,12 +104,12 @@ new FormModel {
 				"value": "cell 0 1"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
-				name: "colorizeMenuBarCheckBox"
-				"text": "colorize menu bar"
+				name: "rightStretchCompCheckBox"
+				"text": "right aligned stretching component"
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "colorizeMenuBar", false ) )
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "rightStretchCompChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 1"
 			} )
@@ -118,6 +124,26 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 2"
 			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "colorizeMenuBarCheckBox"
+				"text": "colorize menu bar"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "colorizeMenuBar", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 2"
+			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "unifiedBackgroundCheckBox"
+				"text": "unified background"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "unifiedBackgroundChanged", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 3"
+			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "colorizeMenusCheckBox"
 				"text": "colorize menus"
@@ -126,7 +152,17 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "colorizeMenus", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 2"
+				"value": "cell 1 3"
+			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "colorizeTitleBarCheckBox"
+				"text": "colorize title bar"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "colorizeTitleBar", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "resizableCheckBox"
@@ -137,7 +173,7 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "resizableChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 3"
+				"value": "cell 0 5"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "maximizedBoundsCheckBox"
@@ -147,7 +183,7 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "maximizedBoundsChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 3"
+				"value": "cell 1 5"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "undecoratedCheckBox"
@@ -157,7 +193,7 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "undecoratedChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4"
+				"value": "cell 0 6"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "fullScreenCheckBox"
@@ -167,19 +203,19 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "fullScreenChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 4"
+				"value": "cell 1 6"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "label1"
 				"text": "Style:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 5"
+				"value": "cell 0 7"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "label2"
 				"text": "Icon:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 5"
+				"value": "cell 1 7"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 				"$columnConstraints": "[fill]"
@@ -288,7 +324,7 @@ new FormModel {
 					"value": "cell 0 8"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 6"
+				"value": "cell 0 8"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 				"$columnConstraints": "[fill]"
@@ -331,14 +367,22 @@ new FormModel {
 					"value": "cell 0 2"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 6"
+				"value": "cell 1 8"
 			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "openDialogButton"
 				"text": "Open Dialog"
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openDialog", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 7"
+				"value": "cell 0 9 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "openFrameButton"
+				"text": "Open Frame"
+				"mnemonic": 65
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openFrame", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 9 2 1"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )

flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/FlatTestLaf.properties

@@ -344,6 +344,7 @@ TitlePane.background = #0f0
 TitlePane.inactiveBackground = #080
 TitlePane.foreground = #00f
 TitlePane.inactiveForeground = #fff
+TitlePane.borderColor = #f00
 
 
 #---- ToggleButton ----

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt

@@ -873,6 +873,7 @@ TitlePane.closePressedBackground
 TitlePane.closePressedForeground
 TitlePane.embeddedForeground
 TitlePane.foreground
+TitlePane.icon
 TitlePane.iconMargins
 TitlePane.iconSize
 TitlePane.iconifyIcon