Merge remote-tracking branch 'origin/main' into styling

# Conflicts:
#	flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatButtonBorder.java
#	flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatToolBarUI.java

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatCapsLockIcon.java

@@ -57,7 +57,7 @@ public class FlatCapsLockIcon
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
 			  <g fill="none" fill-rule="evenodd">
 			    <rect width="16" height="16" fill="#6E6E6E" rx="3"/>
-			    <rect width="6" height="2" x="5" y="12" fill="#FFF"/>
+			    <rect width="6" height="2" x="5" y="11.5" fill="#FFF"/>
     			<path fill="#FFF" d="M2,8 L8,2 L14,8 L11,8 L11,10 L5,10 L5,8 L2,8 Z"/>
 			  </g>
 			</svg>
@@ -65,7 +65,7 @@ public class FlatCapsLockIcon
 
 		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
 		path.append( new RoundRectangle2D.Float( 0, 0, 16, 16, 6, 6 ), false );
-		path.append( new Rectangle2D.Float( 5, 12, 6, 2 ), false );
+		path.append( new Rectangle2D.Float( 5, 11.5f, 6, 2 ), false );
 		path.append( FlatUIUtils.createPath( 2,8, 8,2, 14,8, 11,8, 11,10, 5,10, 5,8 ), false );
 		g.fill( path );
 	}

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

@@ -20,6 +20,7 @@ import java.awt.Color;
 import java.awt.Component;
 import java.awt.GradientPaint;
 import java.awt.Graphics;
+import java.awt.Graphics2D;
 import java.awt.Insets;
 import java.awt.Paint;
 import javax.swing.AbstractButton;
@@ -43,11 +44,13 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.default.focusedBorderColor	Color
  * @uiDefault Button.default.focusColor			Color
  * @uiDefault Button.default.hoverBorderColor	Color	optional
+ * @uiDefault Button.toolbar.focusColor			Color	optional; defaults to Component.focusColor
  * @uiDefault Button.borderWidth				int
  * @uiDefault Button.default.borderWidth		int
  * @uiDefault Button.innerFocusWidth			int or float	optional; defaults to Component.innerFocusWidth
  * @uiDefault Button.toolbar.margin				Insets
  * @uiDefault Button.toolbar.spacingInsets		Insets
+ * @uiDefault Button.toolbar.focusWidth			int or float		optional; default is 1.5
  * @uiDefault Button.arc						int
  *
  * @author Karl Tauber
@@ -66,11 +69,15 @@ public class FlatButtonBorder
 	@Styleable(dot=true) protected Color defaultFocusedBorderColor = UIManager.getColor( "Button.default.focusedBorderColor" );
 	@Styleable(dot=true) protected Color defaultFocusColor = UIManager.getColor( "Button.default.focusColor" );
 	@Styleable(dot=true) protected Color defaultHoverBorderColor = UIManager.getColor( "Button.default.hoverBorderColor" );
+	/** @since 1.4 */
+	protected final Color toolbarFocusColor = UIManager.getColor( "Button.toolbar.focusColor" );
 
 	@Styleable protected int borderWidth = UIManager.getInt( "Button.borderWidth" );
 	@Styleable(dot=true) protected int defaultBorderWidth = UIManager.getInt( "Button.default.borderWidth" );
 	@Styleable(dot=true) protected Insets toolbarMargin = UIManager.getInsets( "Button.toolbar.margin" );
 	@Styleable(dot=true) protected Insets toolbarSpacingInsets = UIManager.getInsets( "Button.toolbar.spacingInsets" );
+	/** @since 1.4 */
+	protected final float toolbarFocusWidth = FlatUIUtils.getUIFloat( "Button.toolbar.focusWidth", 1.5f );
 	@Styleable protected int arc = UIManager.getInt( "Button.arc" );
 
 	public FlatButtonBorder() {
@@ -85,11 +92,41 @@ public class FlatButtonBorder
 			!FlatButtonUI.isHelpButton( c ) &&
 			!FlatToggleButtonUI.isTabButton( c ) )
 		  super.paintBorder( c, g, x, y, width, height );
+		else if( FlatButtonUI.isToolBarButton( c ) && isFocused( c ) )
+			paintToolBarFocus( c, g, x, y, width, height );
+	}
+
+	/**
+	 * @since 1.4
+	 */
+	protected void paintToolBarFocus( Component c, Graphics g, int x, int y, int width, int height ) {
+		Graphics2D g2 = (Graphics2D) g.create();
+		try {
+			FlatUIUtils.setRenderingHints( g2 );
+
+			float focusWidth = UIScale.scale( toolbarFocusWidth );
+			float arc = UIScale.scale( (float) getArc( c ) );
+			Color outlineColor = getOutlineColor( c );
+
+			Insets spacing = UIScale.scale( toolbarSpacingInsets );
+			x += spacing.left;
+			y += spacing.top;
+			width -= spacing.left + spacing.right;
+			height -= spacing.top + spacing.bottom;
+
+			g2.setColor( (outlineColor != null) ? outlineColor : getFocusColor( c ) );
+			// not using paintComponentOuterBorder() here because its round edges look too "thick"
+			FlatUIUtils.paintComponentBorder( g2, x, y, width, height, 0, focusWidth, arc );
+		} finally {
+			g2.dispose();
+		}
 	}
 
 	@Override
 	protected Color getFocusColor( Component c ) {
-		return FlatButtonUI.isDefaultButton( c ) ? defaultFocusColor : super.getFocusColor( c );
+		return (toolbarFocusColor != null && FlatButtonUI.isToolBarButton( c ))
+			? toolbarFocusColor
+			: (FlatButtonUI.isDefaultButton( c ) ? defaultFocusColor : super.getFocusColor( c ));
 	}
 
 	@Override

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

@@ -24,6 +24,7 @@ import java.awt.event.FocusEvent;
 import java.awt.event.MouseEvent;
 import javax.swing.JFormattedTextField;
 import javax.swing.plaf.UIResource;
+import javax.swing.text.BadLocationException;
 import javax.swing.text.DefaultCaret;
 import javax.swing.text.Document;
 import javax.swing.text.JTextComponent;
@@ -142,4 +143,23 @@ public class FlatCaret
 			moveDot( doc.getLength() );
 		}
 	}
+
+	/**
+	 * @since 1.4
+	 */
+	public void scrollCaretToVisible() {
+		JTextComponent c = getComponent();
+		if( c == null || c.getUI() == null )
+			return;
+
+		try {
+			Rectangle loc = c.getUI().modelToView( c, getDot(), getDotBias() );
+			if( loc != null ) {
+				adjustVisibility( loc );
+				damage( loc );
+			}
+		} catch( BadLocationException ex ) {
+			// ignore
+		}
+	}
 }

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

@@ -377,13 +377,9 @@ public class FlatComboBoxUI
 	protected void configureEditor() {
 		super.configureEditor();
 
-		if( editor instanceof JTextField ) {
-			JTextField textField = (JTextField) editor;
-
-			// remove default text field border from editor
-			if( textField.getBorder() instanceof FlatTextBorder )
-				textField.setBorder( BorderFactory.createEmptyBorder() );
-		}
+		// remove default text field border from editor
+		if( editor instanceof JTextField && ((JTextField)editor).getBorder() instanceof FlatTextBorder )
+			((JTextField)editor).setBorder( BorderFactory.createEmptyBorder() );
 
 		// explicitly make non-opaque
 		if( editor instanceof JComponent )
@@ -612,7 +608,6 @@ public class FlatComboBoxUI
 
 	@Override
 	protected Dimension getDisplaySize() {
-
 		paddingBorder.uninstall();
 		Dimension displaySize = super.getDisplaySize();
 		paddingBorder.uninstall();
@@ -863,14 +858,20 @@ public class FlatComboBoxUI
 			if( oldBorder == this )
 				return; // already installed
 
+			// component already has a padding border --> uninstall it
+			// (may happen if single renderer instance is used in multiple comboboxes)
+			if( oldBorder instanceof CellPaddingBorder )
+				((CellPaddingBorder)oldBorder).uninstall();
+
 			// this border can be installed only at one component
+			// (may happen if a renderer returns varying components)
 			uninstall();
 
 			// remember component where this border was installed for uninstall
 			rendererComponent = jc;
 
 			// remember old border and replace it
-			rendererBorder = oldBorder;
+			rendererBorder = jc.getBorder();
 			rendererComponent.setBorder( this );
 		}
 

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

@@ -22,7 +22,10 @@ import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.GridBagConstraints;
 import java.awt.Insets;
+import javax.swing.Box;
+import javax.swing.BoxLayout;
 import javax.swing.JComponent;
+import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
@@ -160,12 +163,30 @@ public class FlatOptionPaneUI
 		if( msg instanceof String && BasicHTML.isHTMLString( (String) msg ) )
 			maxll = Integer.MAX_VALUE;
 
+		// fix right-to-left alignment if super.addMessageComponents() breaks longer lines
+		// into multiple labels and puts them into a box that aligns them to the left
+		if( msg instanceof Box ) {
+			Box box = (Box) msg;
+			if( "OptionPane.verticalBox".equals( box.getName() ) &&
+				box.getLayout() instanceof BoxLayout &&
+				((BoxLayout)box.getLayout()).getAxis() == BoxLayout.Y_AXIS )
+			{
+				box.addPropertyChangeListener( "componentOrientation", e -> {
+					float alignX = box.getComponentOrientation().isLeftToRight() ? 0 : 1;
+					for( Component c : box.getComponents() ) {
+						if( c instanceof JLabel && "OptionPane.label".equals( c.getName() ) )
+							((JLabel)c).setAlignmentX( alignX );
+					}
+				} );
+			}
+		}
+
 		super.addMessageComponents( container, cons, msg, maxll, internallyCreated );
 	}
 
 	private void updateChildPanels( Container c ) {
 		for( Component child : c.getComponents() ) {
-			if( child instanceof JPanel ) {
+			if( child.getClass() == JPanel.class ) {
 				JPanel panel = (JPanel)child;
 
 				// make sub-panel non-opaque for OptionPane.background
@@ -177,9 +198,8 @@ public class FlatOptionPaneUI
 					panel.setBorder( new NonUIResourceBorder( border ) );
 			}
 
-			if( child instanceof Container ) {
+			if( child instanceof Container )
 				updateChildPanels( (Container) child );
-			}
 		}
 	}
 

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

@@ -17,6 +17,7 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Graphics;
+import java.awt.Insets;
 import java.awt.Shape;
 import java.awt.Toolkit;
 import java.awt.event.KeyAdapter;
@@ -127,8 +128,10 @@ public class FlatPasswordFieldUI
 				repaint( e );
 			}
 			private void repaint( KeyEvent e ) {
-				if( e.getKeyCode() == KeyEvent.VK_CAPS_LOCK )
+				if( e.getKeyCode() == KeyEvent.VK_CAPS_LOCK ) {
 					e.getComponent().repaint();
+					scrollCaretToVisible();
+				}
 			}
 		};
 
@@ -186,16 +189,40 @@ public class FlatPasswordFieldUI
 	}
 
 	protected void paintCapsLock( Graphics g ) {
-		if( !showCapsLock )
+		if( !isCapsLockVisible() )
 			return;
 
 		JTextComponent c = getComponent();
-		if( !FlatUIUtils.isPermanentFocusOwner( c ) ||
-			!Toolkit.getDefaultToolkit().getLockingKeyState( KeyEvent.VK_CAPS_LOCK ) )
-		  return;
-
 		int y = (c.getHeight() - capsLockIcon.getIconHeight()) / 2;
-		int x = c.getWidth() - capsLockIcon.getIconWidth() - y;
+		int x = c.getComponentOrientation().isLeftToRight()
+			? c.getWidth() - capsLockIcon.getIconWidth() - y
+			: y;
 		capsLockIcon.paintIcon( c, g, x, y );
 	}
+
+	/**
+	 * @since 1.4
+	 */
+	protected boolean isCapsLockVisible() {
+		if( !showCapsLock )
+			return false;
+
+		JTextComponent c = getComponent();
+		return FlatUIUtils.isPermanentFocusOwner( c ) &&
+			Toolkit.getDefaultToolkit().getLockingKeyState( KeyEvent.VK_CAPS_LOCK );
+	}
+
+	/**
+	 * @since 1.4
+	 */
+	@Override
+	protected Insets getPadding() {
+		Insets padding = super.getPadding();
+		if( !isCapsLockVisible() )
+			return padding;
+
+		boolean ltr = getComponent().getComponentOrientation().isLeftToRight();
+		int iconWidth = capsLockIcon.getIconWidth();
+		return FlatUIUtils.addInsets( padding, new Insets( 0, ltr ? 0 : iconWidth, 0, ltr ? iconWidth : 0 ) );
+	}
 }

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

@@ -44,6 +44,7 @@ import javax.swing.Popup;
 import javax.swing.PopupFactory;
 import javax.swing.RootPaneContainer;
 import javax.swing.SwingUtilities;
+import javax.swing.ToolTipManager;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
 import com.formdev.flatlaf.FlatClientProperties;
@@ -260,13 +261,7 @@ public class FlatPopupFactory
 	}
 
 	private boolean wasInvokedFromToolTipManager() {
-		StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
-		for( StackTraceElement stackTraceElement : stackTrace ) {
-			if( "javax.swing.ToolTipManager".equals( stackTraceElement.getClassName() ) &&
-				"showTipWindow".equals( stackTraceElement.getMethodName() ) )
-			  return true;
-		}
-		return false;
+		return StackUtils.wasInvokedFrom( ToolTipManager.class.getName(), "showTipWindow", 8 );
 	}
 
 	//---- class NonFlashingPopup ---------------------------------------------

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

@@ -342,7 +342,7 @@ public class FlatRootPaneUI
 				? getSizeFunc.apply( rootPane.getContentPane() )
 				: rootPane.getSize();
 
-			int width = Math.max( titlePaneSize.width, contentSize.width );
+			int width = contentSize.width; // title pane width is not considered here
 			int height = titlePaneSize.height + contentSize.height;
 			if( titlePane == null || !titlePane.isMenuBarEmbedded() ) {
 				JMenuBar menuBar = rootPane.getJMenuBar();

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

@@ -315,7 +315,7 @@ public class FlatTableUI
 					if( isDragging &&
 						SystemInfo.isJava_9_orLater &&
 						((horizontalLines && y1 == y2) || (verticalLines && x1 == x2)) &&
-						wasInvokedFromPaintDraggedArea() )
+						wasInvokedFromMethod( "paintDraggedArea" ) )
 					{
 						if( y1 == y2 ) {
 							// horizontal grid line
@@ -357,22 +357,8 @@ public class FlatTableUI
 					return wasInvokedFromMethod( "paintGrid" );
 				}
 
-				private boolean wasInvokedFromPaintDraggedArea() {
-					return wasInvokedFromMethod( "paintDraggedArea" );
-				}
-
 				private boolean wasInvokedFromMethod( String methodName ) {
-					StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
-					for( int i = 0; i < 10 || i < stackTrace.length; i++ ) {
-						if( "javax.swing.plaf.basic.BasicTableUI".equals( stackTrace[i].getClassName() ) ) {
-							String methodName2 = stackTrace[i].getMethodName();
-							if( "paintCell".equals( methodName2 ) )
-								return false;
-							if( methodName.equals( methodName2 ) )
-								return true;
-						}
-					}
-					return false;
+					return StackUtils.wasInvokedFrom( BasicTableUI.class.getName(), methodName, 8 );
 				}
 			};
 		}

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

@@ -252,7 +252,7 @@ public class FlatTextFieldUI
 	@Override
 	protected void paintSafely( Graphics g ) {
 		paintBackground( g, getComponent(), isIntelliJTheme, focusedBackground );
-		paintPlaceholder( g, getComponent(), placeholderForeground );
+		paintPlaceholder( g );
 
 		super.paintSafely( HiDPIUtils.createGraphicsTextYCorrection( (Graphics2D) g ) );
 	}
@@ -308,7 +308,9 @@ public class FlatTextFieldUI
 		return background;
 	}
 
-	static void paintPlaceholder( Graphics g, JTextComponent c, Color placeholderForeground ) {
+	protected void paintPlaceholder( Graphics g ) {
+		JTextComponent c = getComponent();
+
 		// check whether text component is empty
 		if( c.getDocument().getLength() > 0 )
 			return;
@@ -323,16 +325,14 @@ public class FlatTextFieldUI
 			return;
 
 		// compute placeholder location
-		Insets insets = c.getInsets();
+		Rectangle r = getVisibleEditorRect();
 		FontMetrics fm = c.getFontMetrics( c.getFont() );
-		int x = insets.left;
-		int y = insets.top + fm.getAscent() + ((c.getHeight() - insets.top - insets.bottom - fm.getHeight()) / 2);
+		int y = r.y + fm.getAscent() + ((r.height - fm.getHeight()) / 2);
 
 		// paint placeholder
 		g.setColor( placeholderForeground );
-		String clippedPlaceholder = JavaCompatibility.getClippedString( jc, fm,
-				(String) placeholder, c.getWidth() - insets.left - insets.right );
-		FlatUIUtils.drawString( c, g, clippedPlaceholder, x, y );
+		String clippedPlaceholder = JavaCompatibility.getClippedString( c, fm, (String) placeholder, r.width );
+		FlatUIUtils.drawString( c, g, clippedPlaceholder, r.x, y );
 	}
 
 	@Override
@@ -385,4 +385,13 @@ public class FlatTextFieldUI
 		Object padding = getComponent().getClientProperty( FlatClientProperties.TEXT_FIELD_PADDING );
 		return (padding instanceof Insets) ? UIScale.scale( (Insets) padding ) : null;
 	}
+
+	/**
+	 * @since 1.4
+	 */
+	protected void scrollCaretToVisible() {
+		Caret caret = getComponent().getCaret();
+		if( caret instanceof FlatCaret )
+			((FlatCaret)caret).scrollCaretToVisible();
+	}
 }

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

@@ -25,6 +25,7 @@ import java.beans.PropertyChangeListener;
 import java.util.Map;
 import javax.swing.AbstractButton;
 import javax.swing.JComponent;
+import javax.swing.UIManager;
 import javax.swing.border.Border;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicToolBarUI;
@@ -45,6 +46,10 @@ import com.formdev.flatlaf.ui.FlatStyleSupport.Styleable;
  * @uiDefault ToolBar.floatingForeground				Color
  * @uiDefault ToolBar.isRollover						boolean
  *
+ * <!-- FlatToolBarUI -->
+ *
+ * @uiDefault ToolBar.focusableButtons					boolean
+ *
  * <!-- FlatToolBarBorder -->
  *
  * @uiDefault ToolBar.borderMargins				Insets
@@ -55,6 +60,9 @@ import com.formdev.flatlaf.ui.FlatStyleSupport.Styleable;
 public class FlatToolBarUI
 	extends BasicToolBarUI
 {
+	/** @since 1.4 */
+	protected boolean focusableButtons;
+
 	// for FlatToolBarBorder
 	@Styleable protected Insets borderMargins;
 	@Styleable protected Color gripColor;
@@ -69,6 +77,10 @@ public class FlatToolBarUI
 	public void installUI( JComponent c ) {
 		super.installUI( c );
 
+		// disable focusable state of buttons (when switching from another Laf)
+		if( !focusableButtons )
+			setButtonsFocusable( false );
+
 		applyStyle( FlatStyleSupport.getStyle( c ) );
 	}
 
@@ -76,9 +88,20 @@ public class FlatToolBarUI
 	public void uninstallUI( JComponent c ) {
 		super.uninstallUI( c );
 
+		// re-enable focusable state of buttons (when switching to another Laf)
+		if( !focusableButtons )
+			setButtonsFocusable( true );
+
 		oldStyleValues = null;
 	}
 
+	@Override
+	protected void installDefaults() {
+		super.installDefaults();
+
+		focusableButtons = UIManager.getBoolean( "ToolBar.focusableButtons" );
+	}
+
 	@Override
 	protected ContainerListener createToolBarContListener() {
 		return new ToolBarContListener() {
@@ -86,18 +109,22 @@ public class FlatToolBarUI
 			public void componentAdded( ContainerEvent e ) {
 				super.componentAdded( e );
 
-				Component c = e.getChild();
-				if( c instanceof AbstractButton )
-					c.setFocusable( false );
+				if( !focusableButtons ) {
+					Component c = e.getChild();
+					if( c instanceof AbstractButton )
+						c.setFocusable( false );
+				}
 			}
 
 			@Override
 			public void componentRemoved( ContainerEvent e ) {
 				super.componentRemoved( e );
 
-				Component c = e.getChild();
-				if( c instanceof AbstractButton )
-					c.setFocusable( true );
+				if( !focusableButtons ) {
+					Component c = e.getChild();
+					if( c instanceof AbstractButton )
+						c.setFocusable( true );
+				}
 			}
 		};
 	}
@@ -121,6 +148,16 @@ public class FlatToolBarUI
 		return FlatStyleSupport.applyToAnnotatedObject( this, key, value );
 	}
 
+	/**
+	 * @since 1.4
+	 */
+	protected void setButtonsFocusable( boolean focusable ) {
+		for( Component c : toolBar.getComponents() ) {
+			if( c instanceof AbstractButton )
+				c.setFocusable( focusable );
+		}
+	}
+
 	// disable rollover border
 	@Override protected void setBorderToRollover( Component c ) {}
 	@Override protected void setBorderToNonRollover( Component c ) {}

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

@@ -94,6 +94,11 @@ public class FlatUIUtils
 	}
 
 	public static Insets addInsets( Insets insets1, Insets insets2 ) {
+		if( insets1 == null )
+			return insets2;
+		if( insets2 == null )
+			return insets1;
+
 		return new Insets(
 			insets1.top + insets2.top,
 			insets1.left + insets2.left,

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

@@ -0,0 +1,50 @@
+/*
+ * 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.ui;
+
+import java.util.function.BiPredicate;
+
+/**
+ * @author Karl Tauber
+ */
+class StackUtils
+{
+	private static final StackUtils INSTANCE = new StackUtilsImpl();
+
+	// hide from javadoc
+	StackUtils() {
+	}
+
+	/**
+	 * Checks whether current method was invoked from the given class and method.
+	 */
+	public static boolean wasInvokedFrom( String className, String methodName, int limit ) {
+		return wasInvokedFrom( (c,m) -> c.equals( className ) && m.equals( methodName ), limit );
+	}
+
+	/**
+	 * Checks whether current method was invoked from a class and method using the given predicate,
+	 * which gets the class name of the stack frame as first parameter and the method name as second parameter.
+	 */
+	public static boolean wasInvokedFrom( BiPredicate<String, String> predicate, int limit ) {
+		return INSTANCE.wasInvokedFromImpl( predicate, limit );
+	}
+
+	boolean wasInvokedFromImpl( BiPredicate<String, String> predicate, int limit ) {
+		throw new UnsupportedOperationException();
+	}
+}

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

@@ -0,0 +1,41 @@
+/*
+ * 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.ui;
+
+import java.util.function.BiPredicate;
+
+/**
+ * @author Karl Tauber
+ */
+class StackUtilsImpl
+	extends StackUtils
+{
+	@Override
+	boolean wasInvokedFromImpl( BiPredicate<String, String> predicate, int limit ) {
+		int count = -2;
+		StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
+		for( StackTraceElement stackTraceElement : stackTrace ) {
+			if( predicate.test( stackTraceElement.getClassName(), stackTraceElement.getMethodName() ) )
+				return true;
+
+			count++;
+			if( limit > 0 && count > limit )
+				return false;
+		}
+		return false;
+	}
+}

flatlaf-core/src/main/java9/com/formdev/flatlaf/ui/StackUtilsImpl.java

@@ -0,0 +1,37 @@
+/*
+ * 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.ui;
+
+import java.util.function.BiPredicate;
+
+/**
+ * @author Karl Tauber
+ */
+class StackUtilsImpl
+	extends StackUtils
+{
+	@Override
+	boolean wasInvokedFromImpl( BiPredicate<String, String> predicate, int limit ) {
+		return StackWalker.getInstance().walk( stream -> {
+			if( limit > 0 )
+				stream = stream.limit( limit + 2 );
+			return stream.anyMatch( f -> {
+				return predicate.test( f.getClassName(), f.getMethodName() );
+			} );
+		} );
+	}
+}

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties

@@ -752,6 +752,7 @@ ToolBar.separatorWidth = 7
 ToolBar.separatorColor = $Separator.foreground
 
 ToolBar.spacingBorder = $Button.toolbar.spacingInsets
+ToolBar.focusableButtons = false
 
 
 #---- ToolTipManager ----