Module javafx.graphics
Package javafx.css

Class 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 Detail

      • PseudoClass

        public PseudoClass​()

    • Method Detail

      • getPseudoClass

        public static PseudoClass getPseudoClass​(String pseudoClass)
        There is only one PseudoClass instance for a given pseudoClass.
        Parameters:
        pseudoClass - the pseudo-class
        Returns:
        The PseudoClass for the given pseudoClass. Will not return null.
        Throws:
        IllegalArgumentException - if pseudoClass parameter is null or an empty String

      • getPseudoClassName

        public abstract String getPseudoClassName​()
        Returns:
        the pseudo-class state