Interface Selection<E>

Type Parameters:
E - the type of elements that can be selected
All Superinterfaces:
Iterable<E>
All Known Subinterfaces:
MutableSelection<E>, MutableSingleSelection<E>, SingleSelection<E>
All Known Implementing Classes:
AbstractMutableSelection, AbstractMutableSingleSelection, AbstractSelection, BeanSingleSelection, NullSelection, NullSingleSelection, PropertySingleSelection, SimpleSelection, SimpleSingleSelection

public interface Selection<E> extends Iterable<E>
This interface represents the current state of a selection. A selection is to be understood in the broad sense and not only related to user interactions.
  • Method Details

    • isActive

      boolean isActive()
      Indicates whether at least one element is currently selected.
      Returns:
      true if at least one element is selected, false otherwise.
    • isSelected

      boolean isSelected(E element)
      Indicates whether a given element is selected or not.
      Parameters:
      element - the element to be tested
      Returns:
      true if the element is selected, false otherwise
    • getSelectedSet

      Set<E> getSelectedSet()
      Returns the selected elements as a Set.
      Returns:
      the Set of selected elements.
    • getSelectedCount

      int getSelectedCount()
      Returns the number of elements currently selected.
      Returns:
      the number of selected elements.
    • addSelectionListener

      void addSelectionListener(SelectionListener<E> listener)
      Add a listener to the list that's notified each time a change to the selection occurs.
      Parameters:
      listener - the SelectionListener
    • addWeakSelectionListener

      void addWeakSelectionListener(SelectionListener<E> listener)
      Add a listener to the list that's notified each time a change to the selection occurs. The listener will automatically be disposed of should no other object have a reference to it.
      Parameters:
      listener - the SelectionListener
    • removeSelectionListener

      void removeSelectionListener(SelectionListener<E> listener)
      Remove a listener to the list that's notified each time a change to the selection occurs.
      Parameters:
      listener - the SelectionListener
    • removeSelectionListeners

      void removeSelectionListeners()
      Remove all listeners to the list that's notified each time a change to the selection occurs.
    • isEnabled

      boolean isEnabled()