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JavaTM 2 Platform Std. Ed. v1.3 |
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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--java.awt.Component | +--java.awt.Container | +--javax.swing.JComponent | +--javax.swing.JLabel | +--javax.swing.DefaultListCellRenderer
Renders an item in a list.
Implementation Note:
This class overrides
validate
,
revalidate
,
repaint
,
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. A future release of Swing will provide support for long term persistence.
Inner Class Summary | |
static class |
DefaultListCellRenderer.UIResource
A subclass of DefaultListCellRenderer that implements UIResource. |
Inner classes inherited from class javax.swing.JLabel |
JLabel.AccessibleJLabel |
Inner classes inherited from class javax.swing.JComponent |
JComponent.AccessibleJComponent |
Inner classes inherited from class java.awt.Container |
Container.AccessibleAWTContainer |
Inner classes inherited from class java.awt.Component |
Component.AccessibleAWTComponent |
Field Summary | |
protected static Border |
noFocusBorder
|
Fields inherited from class javax.swing.JLabel |
labelFor |
Fields inherited from class javax.swing.JComponent |
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW |
Fields inherited from class java.awt.Component |
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Fields inherited from interface javax.swing.SwingConstants |
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NORTH, NORTH_EAST, NORTH_WEST, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST |
Fields inherited from interface java.awt.image.ImageObserver |
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
Constructor Summary | |
DefaultListCellRenderer()
Constructs a default renderer object for an item in a list. |
Method Summary | |
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 |
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 inherited from class java.awt.Container |
add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getLayout, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setLayout, validateTree |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
protected static Border noFocusBorder
Constructor Detail |
public DefaultListCellRenderer()
Method Detail |
public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus)
ListCellRenderer
paint
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
javax.swing.ListCellRenderer
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
,
ListModel
public void validate()
validate
in class Container
java.awt.Container
Container.validate()
,
Component.invalidate()
public void revalidate()
revalidate
in class JComponent
javax.swing.JComponent
Component.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 JComponent
javax.swing.JComponent
Component.isShowing()
,
RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)
public void repaint(Rectangle r)
repaint
in class JComponent
javax.swing.JComponent
Component.isShowing()
,
RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)
protected void firePropertyChange(String propertyName, Object oldValue, Object newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
propertyName
- the programmatic name of the property that was changedoldValue
- the old value of the propertynewValue
- the new value of the propertyPropertyChangeSupport
public void firePropertyChange(String propertyName, byte oldValue, byte newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
JComponent.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
public void firePropertyChange(String propertyName, char oldValue, char newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
JComponent.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
public void firePropertyChange(String propertyName, short oldValue, short newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
JComponent.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
public void firePropertyChange(String propertyName, int oldValue, int newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
JComponent.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
public void firePropertyChange(String propertyName, long oldValue, long newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
JComponent.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
public void firePropertyChange(String propertyName, float oldValue, float newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
JComponent.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
public void firePropertyChange(String propertyName, double oldValue, double newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
JComponent.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue)
firePropertyChange
in class JComponent
javax.swing.JComponent
JComponent.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
|
JavaTM 2 Platform Std. Ed. v1.3 |
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