public abstract class IlvAbstractCellRenderer extends JLabel
IlvAbstractCellRenderer
is an extension of JLabel
that can be used as the base class for high performance cell renderer
implementations for tables, trees, or other Swing components.
Implementation Note:
This class inherits from JLabel
, a standard component class.
However, Swing components that utilize cell renderers (e.g. JTable
,
JTree
, and so on) require some slightly modified behavior
from their cell renderers. Typically, the Swing component will use the same
cell renderer to rubber-stamp many, if not all, of its cells. It will use
the cell renderer to draw the first cell, it will change the contents of the
cell renderer, it shifts the origin of the renderer 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. So this class overrides the validate()
,
revalidate()
, repaint(long, int, int, int, int)
, and firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)
methods to be no-ops. If you write your own renderers from scratch, you
should keep this performance consideration in mind.
JLabel.AccessibleJLabel
JComponent.AccessibleJComponent
Container.AccessibleAWTContainer
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
Constructor and Description |
---|
IlvAbstractCellRenderer()
Creates an
IlvAbstractCellRenderer instance with no image and
with an empty string for the text. |
Modifier and Type | Method and Description |
---|---|
void |
firePropertyChange(String propertyName,
boolean oldValue,
boolean newValue)
This method is overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
byte oldValue,
byte newValue)
This method is overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
char oldValue,
char newValue)
This method is overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
double oldValue,
double newValue)
This method is overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
float oldValue,
float newValue)
This method is overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
int oldValue,
int newValue)
This method is overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
long oldValue,
long newValue)
This method is overridden for performance reasons.
|
protected void |
firePropertyChange(String propertyName,
Object oldValue,
Object newValue)
This method is overridden for performance reasons.
|
void |
firePropertyChange(String propertyName,
short oldValue,
short newValue)
This method is overridden for performance reasons.
|
void |
repaint(long tm,
int x,
int y,
int width,
int height)
This method is overridden for performance reasons.
|
void |
repaint(Rectangle r)
This method is overridden for performance reasons.
|
void |
revalidate()
This method is overridden for performance reasons.
|
void |
validate()
This method is 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, updateUI
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, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, 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
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, invalidate, 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
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, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, 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, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle
public IlvAbstractCellRenderer()
IlvAbstractCellRenderer
instance with no image and
with an empty string for the text. The label is centered vertically in its
display area. The label's contents, once set, will be displayed on the
leading edge of the label's display area. The renderer will be opaque by
default.public void validate()
public void revalidate()
revalidate
in class JComponent
public void repaint(long tm, int x, int y, int width, int height)
repaint
in class JComponent
public void repaint(Rectangle r)
repaint
in class JComponent
protected void firePropertyChange(String propertyName, Object oldValue, Object newValue)
firePropertyChange
in class Component
public void firePropertyChange(String propertyName, byte oldValue, byte newValue)
firePropertyChange
in class Component
public void firePropertyChange(String propertyName, char oldValue, char newValue)
firePropertyChange
in class JComponent
public void firePropertyChange(String propertyName, short oldValue, short newValue)
firePropertyChange
in class Component
public void firePropertyChange(String propertyName, int oldValue, int newValue)
firePropertyChange
in class JComponent
public void firePropertyChange(String propertyName, long oldValue, long newValue)
firePropertyChange
in class Component
public void firePropertyChange(String propertyName, float oldValue, float newValue)
firePropertyChange
in class Component
public void firePropertyChange(String propertyName, double oldValue, double newValue)
firePropertyChange
in class Component
public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue)
firePropertyChange
in class JComponent
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