Class DefaultComboBoxModel<E>

java.lang.Object
javax.swing.AbstractListModel<E>
javax.swing.DefaultComboBoxModel<E>
Type Parameters:
E - the type of the elements of this model
All Implemented Interfaces:
Serializable, ComboBoxModel<E>, ListModel<E>, MutableComboBoxModel<E>
public class DefaultComboBoxModel<E> extends AbstractListModel<E> implements MutableComboBoxModel<E>, Serializable
The default model for combo boxes.
Since:
1.2

  • Field Summary

    Fields declared in class AbstractListModel

    listenerList
    Modifier and Type
    Field
    Description
    protected EventListenerList
    listenerList
    The listener list.

  • Constructor Summary

    Constructors
    Constructor
    Description
    DefaultComboBoxModel()
    Constructs an empty DefaultComboBoxModel object.
    DefaultComboBoxModel(E[] items)
    Constructs a DefaultComboBoxModel object initialized with an array of objects.
    DefaultComboBoxModel(Vector<E> v)
    Constructs a DefaultComboBoxModel object initialized with a vector.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    addAll(int index, Collection<? extends E> c)
    Adds all of the elements present in the collection, starting from the specified index.
    void
    addAll(Collection<? extends E> c)
    Adds all of the elements present in the collection.
    void
    addElement(E anObject)
    Adds an item at the end of the model.
    E
    getElementAt(int index)
    Returns the value at the specified index.
    int
    getIndexOf(Object anObject)
    Returns the index-position of the specified object in the list.
    Object
    getSelectedItem()
    Returns the selected item
    int
    getSize()
    Returns the length of the list.
    void
    insertElementAt(E anObject, int index)
    Adds an item at a specific index.
    void
    removeAllElements()
    Empties the list.
    void
    removeElement(Object anObject)
    Removes an item from the model.
    void
    removeElementAt(int index)
    Removes an item at a specific index.
    void
    setSelectedItem(Object anObject)
    Set the value of the selected item.

    Methods declared in class AbstractListModel

    addListDataListener, fireContentsChanged, fireIntervalAdded, fireIntervalRemoved, getListDataListeners, getListeners, removeListDataListener
    Modifier and Type
    Method
    Description
    void
    addListDataListener(ListDataListener l)
    Adds a listener to the list that's notified each time a change to the data model occurs.
    protected void
    fireContentsChanged(Object source, int index0, int index1)
    AbstractListModel subclasses must call this method after one or more elements of the list change.
    protected void
    fireIntervalAdded(Object source, int index0, int index1)
    AbstractListModel subclasses must call this method after one or more elements are added to the model.
    protected void
    fireIntervalRemoved(Object source, int index0, int index1)
    AbstractListModel subclasses must call this method after one or more elements are removed from the model.
    ListDataListener[]
    getListDataListeners()
    Returns an array of all the list data listeners registered on this AbstractListModel.
    <T extends EventListener>
    T[]
    getListeners(Class<T> listenerType)
    Returns an array of all the objects currently registered as FooListeners upon this model.
    void
    removeListDataListener(ListDataListener l)
    Removes a listener from the list that's notified each time a change to the data model occurs.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • DefaultComboBoxModel

      public DefaultComboBoxModel()
      Constructs an empty DefaultComboBoxModel object.

    • DefaultComboBoxModel

      public DefaultComboBoxModel(E[] items)
      Constructs a DefaultComboBoxModel object initialized with an array of objects.
      Parameters:
      items - an array of Object objects

    • DefaultComboBoxModel

      public DefaultComboBoxModel(Vector<E> v)
      Constructs a DefaultComboBoxModel object initialized with a vector.
      Parameters:
      v - a Vector object ...

  • Method Details

    • setSelectedItem

      public void setSelectedItem(Object anObject)
      Set the value of the selected item. The selected item may be null.
      Specified by:
      setSelectedItem in interface ComboBoxModel<E>
      Parameters:
      anObject - The combo box value or null for no selection.

    • getSelectedItem

      public Object getSelectedItem()
      Description copied from interface: ComboBoxModel
      Returns the selected item
      Specified by:
      getSelectedItem in interface ComboBoxModel<E>
      Returns:
      The selected item or null if there is no selection

    • getSize

      public int getSize()
      Description copied from interface: ListModel
      Returns the length of the list.
      Specified by:
      getSize in interface ListModel<E>
      Returns:
      the length of the list

    • getElementAt

      public E getElementAt(int index)
      Description copied from interface: ListModel
      Returns the value at the specified index.
      Specified by:
      getElementAt in interface ListModel<E>
      Parameters:
      index - the requested index
      Returns:
      the value at index

    • getIndexOf

      public int getIndexOf(Object anObject)
      Returns the index-position of the specified object in the list.
      Parameters:
      anObject - the object to return the index of
      Returns:
      an int representing the index position, where 0 is the first position

    • addElement

      public void addElement(E anObject)
      Description copied from interface: MutableComboBoxModel
      Adds an item at the end of the model. The implementation of this method should notify all registered ListDataListeners that the item has been added.
      Specified by:
      addElement in interface MutableComboBoxModel<E>
      Parameters:
      anObject - the item to be added

    • insertElementAt

      public void insertElementAt(E anObject, int index)
      Description copied from interface: MutableComboBoxModel
      Adds an item at a specific index. The implementation of this method should notify all registered ListDataListeners that the item has been added.
      Specified by:
      insertElementAt in interface MutableComboBoxModel<E>
      Parameters:
      anObject - the item to be added
      index - location to add the object

    • removeElementAt

      public void removeElementAt(int index)
      Description copied from interface: MutableComboBoxModel
      Removes an item at a specific index. The implementation of this method should notify all registered ListDataListeners that the item has been removed.
      Specified by:
      removeElementAt in interface MutableComboBoxModel<E>
      Parameters:
      index - location of the item to be removed

    • removeElement

      public void removeElement(Object anObject)
      Description copied from interface: MutableComboBoxModel
      Removes an item from the model. The implementation of this method should should notify all registered ListDataListeners that the item has been removed.
      Specified by:
      removeElement in interface MutableComboBoxModel<E>
      Parameters:
      anObject - the Object to be removed

    • removeAllElements

      public void removeAllElements()
      Empties the list.

    • addAll

      public void addAll(Collection<? extends E> c)
      Adds all of the elements present in the collection.
      Parameters:
      c - the collection which contains the elements to add
      Throws:
      NullPointerException - if c is null
      Since:
      11

    • addAll

      public void addAll(int index, Collection<? extends E> c)
      Adds all of the elements present in the collection, starting from the specified index.
      Parameters:
      index - index at which to insert the first element from the specified collection
      c - the collection which contains the elements to add
      Throws:
      ArrayIndexOutOfBoundsException - if index does not fall within the range of number of elements currently held
      NullPointerException - if c is null
      Since:
      11