Class DefaultListCellRenderer
- java.lang.Object
-
- java.awt.Component
-
- java.awt.Container
-
- javax.swing.JComponent
-
- javax.swing.JLabel
-
- javax.swing.DefaultListCellRenderer
- All Implemented Interfaces:
-
ImageObserver
,MenuContainer
,Serializable
,Accessible
,ListCellRenderer<Object>
,SwingConstants
- Direct Known Subclasses:
-
DefaultListCellRenderer.UIResource
,MetalFileChooserUI.FileRenderer
,MetalFileChooserUI.FilterComboBoxRenderer
public class DefaultListCellRenderer extends JLabel implements ListCellRenderer<Object>, Serializable
Renders an item in a list.
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 JavaBeans™ has been added to the java.beans
package. Please see XMLEncoder
.
- Since:
- 1.2
- See Also:
- Serialized Form
Nested Class Summary
Modifier and Type | Class | Description |
---|---|---|
static class | DefaultListCellRenderer.UIResource | A subclass of DefaultListCellRenderer that implements UIResource. |
Nested classes/interfaces declared in class javax.swing.JLabel
JLabel.AccessibleJLabel
Nested classes/interfaces declared in class javax.swing.JComponent
JComponent.AccessibleJComponent
Nested classes/interfaces declared in class java.awt.Container
Container.AccessibleAWTContainer
Nested classes/interfaces declared in class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
Field Summary
Modifier and Type | Field | Description |
---|---|---|
protected static Border | noFocusBorder | No focus border |
Fields declared in class javax.swing.JLabel
labelFor
Fields declared in class javax.swing.JComponent
listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
Fields declared in class java.awt.Component
accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
Fields declared in interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
Fields declared in interface javax.swing.SwingConstants
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
Constructor Summary
Constructor | Description |
---|---|
DefaultListCellRenderer() | Constructs a default renderer object for an item in a list. |
Method Summary
Modifier and Type | Method | 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. |
void | firePropertyChange(String propertyName,
short oldValue,
short newValue) | Overridden for performance reasons. |
protected void | firePropertyChange(String propertyName,
Object oldValue,
Object newValue) | Overridden for performance reasons. |
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. |
Methods declared in class javax.swing.JLabel
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, updateUI
Methods declared in class javax.swing.JComponent
addAncestorListener, 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, update
Methods declared in class java.awt.Container
add, 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, validateTree
Methods declared in class java.awt.Component
action, 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, 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, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods declared in interface javax.swing.ListCellRenderer
getListCellRendererComponent
Field Detail
noFocusBorder
protected static Border noFocusBorder
No focus border
Constructor Detail
DefaultListCellRenderer
public DefaultListCellRenderer()
Constructs a default renderer object for an item in a list.
Method Detail
isOpaque
public boolean isOpaque()
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
isOpaque
in classJComponent
- Returns:
-
true
if the background is completely opaque and differs from the JList's background;false
otherwise - Since:
- 1.5
- See Also:
JComponent.setOpaque(boolean)
validate
public void validate()
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
validate
in classContainer
- See Also:
-
Container.add(java.awt.Component)
,Container.invalidate()
,Container.isValidateRoot()
,JComponent.revalidate()
,Container.validateTree()
invalidate
public void invalidate()
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
invalidate
in classContainer
- Since:
- 1.5
- See Also:
-
Container.validate()
,Container.layout()
,LayoutManager2
repaint
public void repaint()
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
repaint
in classComponent
- Since:
- 1.5
- See Also:
Component.update(Graphics)
revalidate
public void revalidate()
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
revalidate
in classJComponent
- See Also:
-
Component.invalidate()
,Container.validate()
,JComponent.isValidateRoot()
,RepaintManager.addInvalidComponent(javax.swing.JComponent)
repaint
public void repaint(long tm, int x, int y, int width, int height)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
repaint
in classJComponent
- Parameters:
-
tm
- this parameter is not used -
x
- the x value of the dirty region -
y
- the y value of the dirty region -
width
- the width of the dirty region -
height
- the height of the dirty region - See Also:
-
JComponent.isPaintingOrigin()
,Component.isShowing()
,RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)
repaint
public void repaint(Rectangle r)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
repaint
in classJComponent
- Parameters:
-
r
- aRectangle
containing the dirty region - See Also:
-
JComponent.isPaintingOrigin()
,Component.isShowing()
,RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)
firePropertyChange
protected void firePropertyChange(String propertyName, Object oldValue, Object newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classComponent
- Parameters:
-
propertyName
- the property whose value has changed -
oldValue
- the property's previous value -
newValue
- the property's new value
firePropertyChange
public void firePropertyChange(String propertyName, byte oldValue, byte newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classComponent
- Parameters:
-
propertyName
- the programmatic name of the property that was changed -
oldValue
- the old value of the property (as a byte) -
newValue
- the new value of the property (as a byte) - See Also:
Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
firePropertyChange
public void firePropertyChange(String propertyName, char oldValue, char newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classComponent
- Parameters:
-
propertyName
- the programmatic name of the property that was changed -
oldValue
- the old value of the property (as a char) -
newValue
- the new value of the property (as a char) - See Also:
Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
firePropertyChange
public void firePropertyChange(String propertyName, short oldValue, short newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classComponent
- Parameters:
-
propertyName
- the programmatic name of the property that was changed -
oldValue
- the old value of the property (as a short) -
newValue
- the new value of the property (as a short) - See Also:
Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
firePropertyChange
public void firePropertyChange(String propertyName, int oldValue, int newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classJComponent
- Parameters:
-
propertyName
- the property whose value has changed -
oldValue
- the property's previous value -
newValue
- the property's new value
firePropertyChange
public void firePropertyChange(String propertyName, long oldValue, long newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classComponent
- Parameters:
-
propertyName
- the programmatic name of the property that was changed -
oldValue
- the old value of the property (as a long) -
newValue
- the new value of the property (as a long) - See Also:
Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
firePropertyChange
public void firePropertyChange(String propertyName, float oldValue, float newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classComponent
- Parameters:
-
propertyName
- the programmatic name of the property that was changed -
oldValue
- the old value of the property (as a float) -
newValue
- the new value of the property (as a float) - See Also:
Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
firePropertyChange
public void firePropertyChange(String propertyName, double oldValue, double newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classComponent
- Parameters:
-
propertyName
- the programmatic name of the property that was changed -
oldValue
- the old value of the property (as a double) -
newValue
- the new value of the property (as a double) - See Also:
Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
firePropertyChange
public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue)
Overridden for performance reasons. See the Implementation Note for more information.
- Overrides:
-
firePropertyChange
in classJComponent
- Parameters:
-
propertyName
- the property whose value has changed -
oldValue
- the property's previous value -
newValue
- the property's new value