Styling: support Label

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

@@ -24,6 +24,7 @@ import java.awt.Rectangle;
 import java.beans.PropertyChangeEvent;
 import java.util.Arrays;
 import java.util.HashSet;
+import java.util.Map;
 import java.util.Set;
 import javax.swing.Icon;
 import javax.swing.JComponent;
@@ -33,7 +34,9 @@ import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicHTML;
 import javax.swing.plaf.basic.BasicLabelUI;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.ui.FlatStyleSupport.Styleable;
 import com.formdev.flatlaf.util.HiDPIUtils;
 import com.formdev.flatlaf.util.UIScale;
 
@@ -55,12 +58,30 @@ import com.formdev.flatlaf.util.UIScale;
 public class FlatLabelUI
 	extends BasicLabelUI
 {
-	private Color disabledForeground;
+	@Styleable protected Color disabledForeground;
 
+	private final boolean shared;
 	private boolean defaults_initialized = false;
+	private Map<String, Object> oldStyleValues;
 
 	public static ComponentUI createUI( JComponent c ) {
-		return FlatUIUtils.createSharedUI( FlatLabelUI.class, FlatLabelUI::new );
+		return FlatUIUtils.canUseSharedUI( c )
+			? FlatUIUtils.createSharedUI( FlatLabelUI.class, () -> new FlatLabelUI( true ) )
+			: new FlatLabelUI( false );
+	}
+
+	/**
+	 * @since TODO
+	 */
+	protected FlatLabelUI( boolean shared ) {
+		this.shared = shared;
+	}
+
+	@Override
+	public void installUI( JComponent c ) {
+		super.installUI( c );
+
+		applyStyle( FlatStyleSupport.getStyle( c ) );
 	}
 
 	@Override
@@ -77,7 +98,9 @@ public class FlatLabelUI
 	@Override
 	protected void uninstallDefaults( JLabel c ) {
 		super.uninstallDefaults( c );
+
 		defaults_initialized = false;
+		oldStyleValues = null;
 	}
 
 	@Override
@@ -94,10 +117,38 @@ public class FlatLabelUI
 		if( name == "text" || name == "font" || name == "foreground" ) {
 			JLabel label = (JLabel) e.getSource();
 			updateHTMLRenderer( label, label.getText(), true );
-		} else
+		} else if( name.equals( FlatClientProperties.STYLE ) )
+			applyStyle( (JLabel) e.getSource(), this, e.getNewValue() );
+		else
 			super.propertyChange( e );
 	}
 
+	private static void applyStyle( JLabel c, FlatLabelUI ui, Object style ) {
+		// unshare component UI if necessary
+		if( style != null && ui.shared ) {
+			c.updateUI();
+			ui = (FlatLabelUI) c.getUI();
+		}
+
+		ui.applyStyle( style );
+		c.revalidate();
+		c.repaint();
+	}
+
+	/**
+	 * @since TODO
+	 */
+	protected void applyStyle( Object style ) {
+		oldStyleValues = FlatStyleSupport.parseAndApply( oldStyleValues, style, this::applyStyleProperty );
+	}
+
+	/**
+	 * @since TODO
+	 */
+	protected Object applyStyleProperty( String key, Object value ) {
+		return FlatStyleSupport.applyToAnnotatedObject( this, key, value );
+	}
+
 	/**
 	 * Checks whether text contains HTML tags that use "absolute-size" keywords
 	 * (e.g. "x-large") for font-size in default style sheet

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

@@ -877,6 +877,10 @@ debug*/
 	protected class FlatTitleLabelUI
 		extends FlatLabelUI
 	{
+		protected FlatTitleLabelUI() {
+			super( false );
+		}
+
 		@Override
 		protected void paintEnabledText( JLabel l, Graphics g, String s, int textX, int textY ) {
 			boolean hasEmbeddedMenuBar = hasVisibleEmbeddedMenuBar( rootPane.getJMenuBar() );

flatlaf-core/src/test/java/com/formdev/flatlaf/ui/FlatStylingTests.java

@@ -173,6 +173,13 @@ public class FlatStylingTests
 		textField( ui );
 	}
 
+	@Test
+	void label() {
+		FlatLabelUI ui = new FlatLabelUI( false );
+
+		ui.applyStyle( "disabledForeground: #fff" );
+	}
+
 	@Test
 	void list() {
 		FlatListUI ui = new FlatListUI();