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Class PseudoClass

java.lang.Object
javafx.css.PseudoClass
public abstract class PseudoClass extends Object
PseudoClass represents one unique pseudo-class state. Introducing a pseudo-class into a JavaFX class only requires that the method Node.pseudoClassStateChanged(javafx.css.PseudoClass, boolean) be called when the pseudo-class state changes. Typically, the pseudoClassStateChanged method is called from the protected void invalidated() method of one of the property base classes in the javafx.beans.property package.

Note that if a node has a default pseudo-class state, a horizontal orientation for example, pseudoClassStateChanged should be called from the constructor to set the initial state.

The following example would allow "xyzzy" to be used as a pseudo-class in a CSS selector.


  public boolean isMagic() {
       return magic.get();
   }

   public BooleanProperty magicProperty() {
       return magic;
   }

   public BooleanProperty magic =
       new BooleanPropertyBase(false) {

       @Override protected void invalidated() {
           pseudoClassStateChanged(MAGIC_PSEUDO_CLASS, get());
       }

       @Override public Object getBean() {
           return MyControl.this;
       }

       @Override public String getName() {
           return "magic";
       }
   }

   private static final PseudoClass
       MAGIC_PSEUDO_CLASS = PseudoClass.getPseudoClass("xyzzy");
 
Since:
JavaFX 8.0

Constructor Summary

Constructor Description
PseudoClass()
Constructor for subclasses to call.

Method Summary

Modifier and Type Method Description
static PseudoClass getPseudoClass(String pseudoClass)
Gets the PseudoClass instance for a given pseudo class name.
abstract String getPseudoClassName()
Gets the name of the PseudoClass.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PseudoClass

public PseudoClass()
Constructor for subclasses to call.

Method Details

getPseudoClass

public static PseudoClass getPseudoClass(String pseudoClass)
Gets the PseudoClass instance for a given pseudo class name.

Note: There is only one PseudoClass instance for a given pseudo class name.

Parameters:
pseudoClass - the name of the pseudo class
Returns:
the PseudoClass instance for a given pseudo class name; It will not return null
Throws:
IllegalArgumentException - if pseudoClass parameter is null or an empty String

getPseudoClassName

public abstract String getPseudoClassName()
Gets the name of the PseudoClass.
Returns:
the name of the PseudoClass

Report a bug or suggest an enhancement
Copyright © 2008, 2025, Oracle and/or its affiliates. All rights reserved.

© 2008, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Java, JavaFX and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

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