public class DefaultListCellRenderer extends JLabel implements ListCellRenderer<Object>, Serializable
Implementation Note:
This class overrides
invalidate,
validate,
revalidate,
repaint,
isOpaque,
and
firePropertyChange
solely to improve performance.
If not overridden, these frequently called methods would execute code paths
that are unnecessary for the default list cell renderer.
If you write your own renderer,
take care to weigh the benefits and
drawbacks of overriding these methods.
Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing. As of 1.4, support for long term storage
of all JavaBeansTM
has been added to the java.beans package.
Please see XMLEncoder.
| Modifier and Type | Class and Description |
|---|---|
static class |
DefaultListCellRenderer.UIResource
A subclass of DefaultListCellRenderer that implements UIResource.
|
JLabel.AccessibleJLabelJComponent.AccessibleJComponentContainer.AccessibleAWTContainerComponent.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy| Modifier and Type | Field and Description |
|---|---|
protected static Border |
noFocusBorder |
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOWBOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENTBOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WESTABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH| Constructor and Description |
|---|
DefaultListCellRenderer()
Constructs a default renderer object for an item
in a list.
|
| Modifier and Type | Method and Description |
|---|---|
void |
firePropertyChange(String propertyName,
boolean oldValue,
boolean newValue)
Overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
byte oldValue,
byte newValue)
Overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
char oldValue,
char newValue)
Overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
double oldValue,
double newValue)
Overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
float oldValue,
float newValue)
Overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
int oldValue,
int newValue)
Overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
long oldValue,
long newValue)
Overridden for performance reasons.
|
protected void |
firePropertyChange(String propertyName,
Object oldValue,
Object newValue)
Overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
short oldValue,
short newValue)
Overridden for performance reasons.
|
Component |
getListCellRendererComponent(JList<?> list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus)
Return a component that has been configured to display the specified
value.
|
void |
invalidate()
Overridden for performance reasons.
|
boolean |
isOpaque()
Overridden for performance reasons.
|
void |
repaint()
Overridden for performance reasons.
|
void |
repaint(long tm,
int x,
int y,
int width,
int height)
Overridden for performance reasons.
|
void |
repaint(Rectangle r)
Overridden for performance reasons.
|
void |
revalidate()
Overridden for performance reasons.
|
void |
validate()
Overridden for performance reasons.
|
checkHorizontalKey, checkVerticalKey, getAccessibleContext, getDisabledIcon, getDisplayedMnemonic, getDisplayedMnemonicIndex, getHorizontalAlignment, getHorizontalTextPosition, getIcon, getIconTextGap, getLabelFor, getText, getUI, getUIClassID, getVerticalAlignment, getVerticalTextPosition, imageUpdate, paramString, setDisabledIcon, setDisplayedMnemonic, setDisplayedMnemonic, setDisplayedMnemonicIndex, setHorizontalAlignment, setHorizontalTextPosition, setIcon, setIconTextGap, setLabelFor, setText, setUI, setVerticalAlignment, setVerticalTextPosition, updateUIaddAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, updateadd, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validateTreeaction, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycleprotected static Border noFocusBorder
public DefaultListCellRenderer()
public Component getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected, boolean cellHasFocus)
ListCellRendererpaint method is then called to
"render" the cell. If it is necessary to compute the dimensions
of a list because the list cells do not have a fixed size, this method
is called to generate a component on which getPreferredSize
can be invoked.getListCellRendererComponent in interface ListCellRenderer<Object>list - The JList we're painting.value - The value returned by list.getModel().getElementAt(index).index - The cells index.isSelected - True if the specified cell was selected.cellHasFocus - True if the specified cell has the focus.JList,
ListSelectionModel,
ListModelpublic boolean isOpaque()
isOpaque in class JComponenttrue if the background is completely opaque
and differs from the JList's background;
false otherwiseJComponent.setOpaque(boolean)public void validate()
validate in class ContainerContainer.add(java.awt.Component),
Container.invalidate(),
Container.isValidateRoot(),
JComponent.revalidate(),
Container.validateTree()public void invalidate()
invalidate in class ContainerContainer.validate(),
Container.layout(),
LayoutManager2public void repaint()
repaint in class ComponentComponent.update(Graphics)public void revalidate()
revalidate in class JComponentComponent.invalidate(),
Container.validate(),
JComponent.isValidateRoot(),
RepaintManager.addInvalidComponent(javax.swing.JComponent)public void repaint(long tm,
int x,
int y,
int width,
int height)
repaint in class JComponenttm - this parameter is not usedx - the x value of the dirty regiony - the y value of the dirty regionwidth - the width of the dirty regionheight - the height of the dirty regionJComponent.isPaintingOrigin(),
Component.isShowing(),
RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)public void repaint(Rectangle r)
repaint in class JComponentr - a Rectangle containing the dirty regionJComponent.isPaintingOrigin(),
Component.isShowing(),
RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)protected void firePropertyChange(String propertyName, Object oldValue, Object newValue)
firePropertyChange in class ComponentpropertyName - the property whose value has changedoldValue - the property's previous valuenewValue - the property's new valuepublic void firePropertyChange(String propertyName, byte oldValue, byte newValue)
firePropertyChange in class ComponentpropertyName - the programmatic name of the property
that was changedoldValue - the old value of the property (as a byte)newValue - the new value of the property (as a byte)Component.firePropertyChange(java.lang.String, java.lang.Object,
java.lang.Object)public void firePropertyChange(String propertyName, char oldValue, char newValue)
firePropertyChange in class JComponentpropertyName - the programmatic name of the property
that was changedoldValue - the old value of the property (as a char)newValue - the new value of the property (as a char)Component.firePropertyChange(java.lang.String, java.lang.Object,
java.lang.Object)public void firePropertyChange(String propertyName, short oldValue, short newValue)
firePropertyChange in class ComponentpropertyName - the programmatic name of the property
that was changedoldValue - the old value of the property (as a short)newValue - the old value of the property (as a short)Component.firePropertyChange(java.lang.String, java.lang.Object,
java.lang.Object)public void firePropertyChange(String propertyName, int oldValue, int newValue)
firePropertyChange in class JComponentpropertyName - the property whose value has changedoldValue - the property's previous valuenewValue - the property's new valuepublic void firePropertyChange(String propertyName, long oldValue, long newValue)
firePropertyChange in class ComponentpropertyName - the programmatic name of the property
that was changedoldValue - the old value of the property (as a long)newValue - the new value of the property (as a long)Component.firePropertyChange(java.lang.String, java.lang.Object,
java.lang.Object)public void firePropertyChange(String propertyName, float oldValue, float newValue)
firePropertyChange in class ComponentpropertyName - the programmatic name of the property
that was changedoldValue - the old value of the property (as a float)newValue - the new value of the property (as a float)Component.firePropertyChange(java.lang.String, java.lang.Object,
java.lang.Object)public void firePropertyChange(String propertyName, double oldValue, double newValue)
firePropertyChange in class ComponentpropertyName - the programmatic name of the property
that was changedoldValue - the old value of the property (as a double)newValue - the new value of the property (as a double)Component.firePropertyChange(java.lang.String, java.lang.Object,
java.lang.Object)public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue)
firePropertyChange in class JComponentpropertyName - the property whose value has changedoldValue - the property's previous valuenewValue - the property's new value Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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