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javax.swing.table
Class DefaultTableCellRenderer
java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JLabel
javax.swing.table.DefaultTableCellRenderer
-
All Implemented Interfaces:
-
ImageObserver
,
MenuContainer
,
Serializable
,
Accessible
,
SwingConstants
,
TableCellRenderer
-
Direct Known Subclasses:
-
DefaultTableCellRenderer.UIResource
-
public class DefaultTableCellRenderer
- extends JLabel
- implements TableCellRenderer, Serializable
The standard class for rendering (displaying) individual cells in a JTable.
Implementation Note:
This class inherits from JLabel, a standard component class. However JTable employs a unique mechanism for rendering its cells and therefore requires some slightly modified behavior from its cell renderer. The table class defines a single cell renderer and uses it as a as a rubber-stamp for rendering all cells in the table; it renders the first cell, changes the contents of that cell renderer, shifts the origin to the new location, re-draws it, and so on. The standard JLabel component was not designed to be used this way and we want to avoid triggering a revalidate each time the cell is drawn. This would greatly decrease performance because the revalidate message would be passed up the hierarchy of the container to determine whether any other components would be affected. As the renderer is only parented for the lifetime of a painting operation we similarly want to avoid the overhead associated with walking the hierarchy for painting operations. So this class overrides the validate, invalidate, revalidate, repaint, and firePropertyChange methods to be no-ops and override the isOpaque method solely to improve performance. If you write your own renderer, please keep this performance consideration in mind.
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
TM
has been added to the java.beans package. Please see
XMLEncoder
.
-
See Also:
-
JTable
Fields inherited from 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
|
Method Summary
|
void |
firePropertyChange
(
String
propertyName, boolean oldValue, boolean newValue)
Overridden for performance reasons. |
protected void |
firePropertyChange
(
String
propertyName,
Object
oldValue,
Object
newValue)
Overridden for performance reasons. |
Component
|
getTableCellRendererComponent
(
JTable
table,
Object
value, boolean isSelected, boolean hasFocus, int row, int column)
Returns the default table cell renderer. |
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 |
setBackground
(
Color
c)
Overrides JComponent.setBackground to assign the unselected-background color to the specified color. |
void |
setForeground
(
Color
c)
Overrides JComponent.setForeground to assign the unselected-foreground color to the specified color. |
protected void |
setValue
(
Object
value)
Sets the String object for the cell being rendered to value. |
void |
updateUI
()
Notification from the UIManager that the look and feel [L&F] has changed. |
void |
validate
()
Overridden for performance reasons. |
Methods inherited from 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
|
Methods inherited from class javax.swing.
JComponent
|
addAncestorListener
,
addNotify
,
addVetoableChangeListener
,
computeVisibleRect
,
contains
,
createToolTip
,
disable
,
enable
,
firePropertyChange
,
firePropertyChange
,
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
,
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
,
setBorder
,
setComponentPopupMenu
,
setDebugGraphicsOptions
,
setDefaultLocale
,
setDoubleBuffered
,
setEnabled
,
setFocusTraversalKeys
,
setFont
,
setInheritsPopupMenu
,
setInputMap
,
setInputVerifier
,
setMaximumSize
,
setMinimumSize
,
setNextFocusableComponent
,
setOpaque
,
setPreferredSize
,
setRequestFocusEnabled
,
setToolTipText
,
setTransferHandler
,
setUI
,
setVerifyInputWhenFocusTarget
,
setVisible
,
unregisterKeyboardAction
,
update
|
Methods inherited from 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
,
transferFocusBackward
,
transferFocusDownCycle
,
validateTree
|
Methods inherited from 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
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
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
,
transferFocusUpCycle
|
noFocusBorder
protected static Border noFocusBorder
-
An empty Border. This field might not be used. To change the Border used by this renderer override the getTableCellRendererComponent method and set the border of the returned component directly.
DefaultTableCellRenderer
public DefaultTableCellRenderer()
-
Creates a default table cell renderer.
setForeground
public void setForeground(Color c)
-
Overrides JComponent.setForeground to assign the unselected-foreground color to the specified color.
-
-
Overrides:
-
setForeground
in class
JComponent
-
-
Parameters:
-
c - set the foreground color to this value
-
See Also:
-
Component.getForeground()
setBackground
public void setBackground(Color c)
-
Overrides JComponent.setBackground to assign the unselected-background color to the specified color.
-
-
Overrides:
-
setBackground
in class
JComponent
-
-
Parameters:
-
c - set the background color to this value
-
See Also:
-
Component.getBackground()
,
JComponent.setOpaque(boolean)
updateUI
public void updateUI()
-
Notification from the UIManager that the look and feel [L&F] has changed. Replaces the current UI object with the latest version from the UIManager.
-
-
Overrides:
-
updateUI
in class
JLabel
-
-
See Also:
-
JComponent.updateUI()
getTableCellRendererComponent
public Component getTableCellRendererComponent(JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column)
-
Returns the default table cell renderer.
During a printing operation, this method will be called with isSelected and hasFocus values of false to prevent selection and focus from appearing in the printed output. To do other customization based on whether or not the table is being printed, check the return value from
JComponent.isPaintingForPrint()
.
-
-
Specified by:
-
getTableCellRendererComponent
in interface
TableCellRenderer
-
-
Parameters:
-
table - the JTable
-
value - the value to assign to the cell at [row, column]
-
isSelected - true if cell is selected
-
hasFocus - true if cell has focus
-
row - the row of the cell to render
-
column - the column of the cell to render
-
Returns:
-
the default table cell renderer
-
See Also:
-
JComponent.isPaintingForPrint()
isOpaque
public boolean isOpaque()
-
Overridden for performance reasons. See the
Implementation Note
for more information.
-
-
Overrides:
-
isOpaque
in class
JComponent
-
-
Returns:
-
true if this component is completely opaque
-
See Also:
-
JComponent.setOpaque(boolean)
invalidate
public void invalidate()
-
Overridden for performance reasons. See the
Implementation Note
for more information.
-
-
Overrides:
-
invalidate
in class
Container
-
-
Since:
-
1.5
-
See Also:
-
Container.validate()
,
Container.layout()
,
LayoutManager
,
LayoutManager2.invalidateLayout(Container)
validate
public void validate()
-
Overridden for performance reasons. See the
Implementation Note
for more information.
-
-
Overrides:
-
validate
in class
Container
-
-
See Also:
-
Container.add(java.awt.Component)
,
Component.invalidate()
,
JComponent.revalidate()
,
Container.validateTree()
revalidate
public void revalidate()
-
Overridden for performance reasons. See the
Implementation Note
for more information.
-
-
Overrides:
-
revalidate
in class
JComponent
-
-
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 class
JComponent
-
-
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:
-
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 class
JComponent
-
-
Parameters:
-
r - a Rectangle containing the dirty region
-
See Also:
-
Component.isShowing()
,
RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)
repaint
public void repaint()
-
Overridden for performance reasons. See the
Implementation Note
for more information.
-
-
Overrides:
-
repaint
in class
Component
-
-
Since:
-
1.5
-
See Also:
-
Component.update(Graphics)
firePropertyChange
protected void firePropertyChange(String propertyName,
Object oldValue,
Object newValue)
-
Overridden for performance reasons. See the
Implementation Note
for more information.
-
-
Overrides:
-
firePropertyChange
in class
Component
-
-
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,
boolean oldValue,
boolean newValue)
-
Overridden for performance reasons. See the
Implementation Note
for more information.
-
-
Overrides:
-
firePropertyChange
in class
JComponent
-
-
Parameters:
-
propertyName - the property whose value has changed
-
oldValue - the property's previous value
-
newValue - the property's new value
setValue
protected void setValue(Object value)
-
Sets the String object for the cell being rendered to value.
-
-
-
Parameters:
-
value - the string value for this cell; if value is null it sets the text value to an empty string
-
See Also:
-
JLabel.setText(java.lang.String)