java.awt
Class Choice
- Accessible, ImageObserver, ItemSelectable, MenuContainer, Serializable
This class implements a drop down choice list.
Choice()- Initializes a new instance of
Choice.
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action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, extends EventListener> T[] getListeners, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFocusable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paint, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFocusable, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, update, validate |
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
Choice
public Choice()
Initializes a new instance of Choice.
add
public void add(String item)
Adds the specified item to this choice box.
addItem
public void addItem(String item)
Adds the specified item to this choice box.
This method is oboslete since Java 2 platform 1.1. Please use
add(String) instead.
countItems
public int countItems()
This method is deprecated in favor of getItemCount.
Returns the number of items in the list.
- The number of items in the list.
extends EventListener> T[] getListeners
public extends EventListener> T[] getListeners(Class listenerType)
Returns an array of all the objects currently registered as FooListeners
upon this Choice. FooListeners are registered using the addFooListener
method.
- extends EventListener> T[] getListeners in interface Component
ClassCastException - If listenerType doesn't specify a class or
interface that implements java.util.EventListener.
getItem
public String getItem(int index)
Returns the item at the specified index in the list.
index - The index into the list to return the item from.
getItemCount
public int getItemCount()
Returns the number of items in the list.
- The number of items in the list.
getSelectedIndex
public int getSelectedIndex()
Returns the index of the selected item.
- The index of the selected item.
getSelectedItem
public String getSelectedItem()
Returns the currently selected item, or null if no item is
selected.
- The currently selected item.
insert
public void insert(String item,
int index)Inserts an item into this Choice. Existing items are shifted
upwards. If the new item is the only item, then it is selected.
If the currently selected item is shifted, then the first item is
selected. If the currently selected item is not shifted, then it
remains selected.
item - The item to add.index - The index at which the item should be inserted.
processEvent
protected void processEvent(AWTEvent event)
Processes this event by invoking processItemEvent() if the
event is an instance of ItemEvent, otherwise the event
is passed to the superclass.
- processEvent in interface Component
event - The event to process.
processItemEvent
protected void processItemEvent(ItemEvent event)
Processes item event by dispatching to any registered listeners.
event - The event to process.
remove
public void remove(int index)
Removes the item at the specified index from the choice box.
index - The index of the item to remove.
remove
public void remove(String item)
Removes the specified item from the choice box.
item - The item to remove.
removeAll
public void removeAll()
Removes all of the objects from this choice box.
select
public void select(int index)
Forces the item at the specified index to be selected.
index - The index of the row to make selected.
select
public void select(String item)
Forces the named item to be selected.
item - The item to be selected.
Choice.java -- Java choice button widget.
Copyright (C) 1999, 2000, 2001, 2002, 2004, 2006 Free Software Foundation, Inc.
This file is part of GNU Classpath.
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