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Styling: support Panel

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This commit is contained in:
Karl Tauber
2021-11-30 18:36:20 +01:00
parent 7c99872278
commit db2452a4ec
4 changed files with 108 additions and 1 deletions
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77
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPanelUI.java
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@@ -16,9 +16,14 @@
package com.formdev.flatlaf.ui;
import java.beans.PropertyChangeListener;
import java.util.Map;
import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicPanelUI;
import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
import com.formdev.flatlaf.util.LoggingFacade;
/**
* Provides the Flat LaF UI delegate for {@link javax.swing.JPanel}.
@@ -34,8 +39,78 @@ import javax.swing.plaf.basic.BasicPanelUI;
*/
public class FlatPanelUI
extends BasicPanelUI
implements StyleableUI
{
private final boolean shared;
private PropertyChangeListener propertyChangeListener;
private Map<String, Object> oldStyleValues;
public static ComponentUI createUI( JComponent c ) {
return FlatUIUtils.createSharedUI( FlatPanelUI.class, FlatPanelUI::new );
return FlatUIUtils.canUseSharedUI( c )
? FlatUIUtils.createSharedUI( FlatPanelUI.class, () -> new FlatPanelUI( true ) )
: new FlatPanelUI( false );
}
/** @since 2 */
protected FlatPanelUI( boolean shared ) {
this.shared = shared;
}
@Override
public void installUI( JComponent c ) {
super.installUI( c );
propertyChangeListener = FlatStylingSupport.createPropertyChangeListener(
c, () -> stylePropertyChange( (JPanel) c ), null );
c.addPropertyChangeListener( propertyChangeListener );
installStyle( (JPanel) c );
}
@Override
public void uninstallUI( JComponent c ) {
super.uninstallUI( c );
c.removePropertyChangeListener( propertyChangeListener );
propertyChangeListener = null;
oldStyleValues = null;
}
private void stylePropertyChange( JPanel c ) {
if( shared && FlatStylingSupport.hasStyleProperty( c ) ) {
// unshare component UI if necessary
// updateUI() invokes installStyle() from installUI()
c.updateUI();
} else
installStyle( c );
c.revalidate();
c.repaint();
}
/** @since 2 */
protected void installStyle( JPanel c ) {
try {
applyStyle( c, FlatStylingSupport.getResolvedStyle( c, "Panel" ) );
} catch( RuntimeException ex ) {
LoggingFacade.INSTANCE.logSevere( null, ex );
}
}
/** @since 2 */
protected void applyStyle( JPanel c, Object style ) {
oldStyleValues = FlatStylingSupport.parseAndApply( oldStyleValues, style,
(key, value) -> applyStyleProperty( c, key, value ) );
}
/** @since 2 */
protected Object applyStyleProperty( JPanel c, String key, Object value ) {
return FlatStylingSupport.applyToAnnotatedObjectOrComponent( this, c, key, value );
}
/** @since 2 */
@Override
public Map<String, Class<?>> getStyleableInfos( JComponent c ) {
return FlatStylingSupport.getAnnotatedStyleableInfos( this );
}
}