: Class DefaultGridCellRenderer

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com.eliad.model.defaults
Class DefaultGridCellRenderer

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--javax.swing.JLabel
                          |
                          +--com.eliad.model.defaults.DefaultGridCellRenderer

Direct Known Subclasses:: DefaultGridCellRenderer.UIResource, DefaultStyleModel.DateRenderer, DefaultStyleModel.IconRenderer, DefaultStyleModel.NumberRenderer

public class DefaultGridCellRenderer
extends javax.swing.JLabel
implements GridCellRenderer, java.io.Serializable

The standard class for rendering (drawing) individual cells or spans in a grid (in particular JSmartGrids).

The mechanisms, as well as the following note, are taken directly from the standard JTable renderer;

Implementation Note: This class inherits from JLabel, a standard component class. However JSmartGrid employs the same unique mechanism for rendering its cells as the JTable and therefore requires some slightly modified behavior from its cell renderer. The grid class defines a single cell renderer and uses it as a as a rubber-stamp for rendering all cells in the grid; it renders the first cell, changes the contents of that cell renderer, shifts the origin to the new location, re-draws it, etc. 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. Therefore, this class overrides the validate, revalidate, repaint, and firePropertyChange methods to be no-ops. If you write your own renderer, please keep this performance consideration in mind.

Version:: 1.0
Author:: Stephan Szymkowicz
See Also:: GridContext, JSmartGrid, javax.swing.JTable, Serialized Form

Inner Class Summary
`static class`	`DefaultGridCellRenderer.UIResource` A subclass of `DefaultGridCellRenderer` that implements `UIResource`.

Inner classes inherited from class javax.swing.JLabel

javax.swing.JLabel.AccessibleJLabel

Inner classes inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Inner classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent

Field Summary
`protected static javax.swing.border.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

Constructor Summary
`DefaultGridCellRenderer()` Creates a default table cell renderer.

Method Summary
`void`	`firePropertyChange(java.lang.String propertyName, boolean oldValue, boolean newValue)` Overridden for performance reasons.
`protected void`	`firePropertyChange(java.lang.String propertyName, java.lang.Object oldValue, java.lang.Object newValue)` Overridden for performance reasons.
`java.awt.Component`	`getComponent(java.lang.Object value, boolean isSelected, boolean hasFocus, boolean isEditable, int row, int column, GridContext context)` Returns the grid cell renderer for a given cell.
`void`	`repaint(long tm, int x, int y, int width, int height)` Overridden for performance reasons.
`void`	`repaint(java.awt.Rectangle r)` Overridden for performance reasons.
`void`	`revalidate()` Overridden for performance reasons.
`protected void`	`setValue(java.lang.Object value)` Sets the string 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, 
getHorizontalAlignment, 
getHorizontalTextPosition, 
getIcon, 
getIconTextGap, 
getLabelFor, 
getText, 
getUI, 
getUIClassID, 
getVerticalAlignment, 
getVerticalTextPosition, 
imageUpdate, 
paramString, 
setDisabledIcon, 
setDisplayedMnemonic, 
setDisplayedMnemonic, 
setHorizontalAlignment, 
setHorizontalTextPosition, 
setIcon, 
setIconTextGap, 
setLabelFor, 
setText, 
setUI, 
setVerticalAlignment, 
setVerticalTextPosition

Methods inherited from class javax.swing.JComponent

addAncestorListener, 
addNotify, 
addPropertyChangeListener, 
addPropertyChangeListener, 
addVetoableChangeListener, 
computeVisibleRect, 
contains, 
createToolTip, 
disable, 
enable, 
firePropertyChange, 
firePropertyChange, 
firePropertyChange, 
firePropertyChange, 
firePropertyChange, 
firePropertyChange, 
firePropertyChange, 
fireVetoableChange, 
getActionForKeyStroke, 
getActionMap, 
getAlignmentX, 
getAlignmentY, 
getAutoscrolls, 
getBorder, 
getBounds, 
getClientProperty, 
getComponentGraphics, 
getConditionForKeyStroke, 
getDebugGraphicsOptions, 
getGraphics, 
getHeight, 
getInputMap, 
getInputMap, 
getInputVerifier, 
getInsets, 
getInsets, 
getListeners, 
getLocation, 
getMaximumSize, 
getMinimumSize, 
getNextFocusableComponent, 
getPreferredSize, 
getRegisteredKeyStrokes, 
getRootPane, 
getSize, 
getToolTipLocation, 
getToolTipText, 
getToolTipText, 
getTopLevelAncestor, 
getVerifyInputWhenFocusTarget, 
getVisibleRect, 
getWidth, 
getX, 
getY, 
grabFocus, 
hasFocus, 
hide, 
isDoubleBuffered, 
isFocusCycleRoot, 
isFocusTraversable, 
isLightweightComponent, 
isManagingFocus, 
isMaximumSizeSet, 
isMinimumSizeSet, 
isOpaque, 
isOptimizedDrawingEnabled, 
isPaintingTile, 
isPreferredSizeSet, 
isRequestFocusEnabled, 
isValidateRoot, 
paint, 
paintBorder, 
paintChildren, 
paintComponent, 
paintImmediately, 
paintImmediately, 
print, 
printAll, 
printBorder, 
printChildren, 
printComponent, 
processComponentKeyEvent, 
processFocusEvent, 
processKeyBinding, 
processKeyEvent, 
processMouseMotionEvent, 
putClientProperty, 
registerKeyboardAction, 
registerKeyboardAction, 
removeAncestorListener, 
removeNotify, 
removePropertyChangeListener, 
removePropertyChangeListener, 
removeVetoableChangeListener, 
requestDefaultFocus, 
requestFocus, 
resetKeyboardActions, 
reshape, 
scrollRectToVisible, 
setActionMap, 
setAlignmentX, 
setAlignmentY, 
setAutoscrolls, 
setBackground, 
setBorder, 
setDebugGraphicsOptions, 
setDoubleBuffered, 
setEnabled, 
setFont, 
setForeground, 
setInputMap, 
setInputVerifier, 
setMaximumSize, 
setMinimumSize, 
setNextFocusableComponent, 
setOpaque, 
setPreferredSize, 
setRequestFocusEnabled, 
setToolTipText, 
setUI, 
setVerifyInputWhenFocusTarget, 
setVisible, 
unregisterKeyboardAction, 
update

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.awt.Component

action, 
add, 
addComponentListener, 
addFocusListener, 
addHierarchyBoundsListener, 
addHierarchyListener, 
addInputMethodListener, 
addKeyListener, 
addMouseListener, 
addMouseMotionListener, 
bounds, 
checkImage, 
checkImage, 
coalesceEvents, 
contains, 
createImage, 
createImage, 
disableEvents, 
dispatchEvent, 
enable, 
enableEvents, 
enableInputMethods, 
getBackground, 
getBounds, 
getColorModel, 
getComponentOrientation, 
getCursor, 
getDropTarget, 
getFont, 
getFontMetrics, 
getForeground, 
getGraphicsConfiguration, 
getInputContext, 
getInputMethodRequests, 
getLocale, 
getLocation, 
getLocationOnScreen, 
getName, 
getParent, 
getPeer, 
getSize, 
getToolkit, 
getTreeLock, 
gotFocus, 
handleEvent, 
inside, 
isDisplayable, 
isEnabled, 
isLightweight, 
isShowing, 
isValid, 
isVisible, 
keyDown, 
keyUp, 
list, 
list, 
list, 
location, 
lostFocus, 
mouseDown, 
mouseDrag, 
mouseEnter, 
mouseExit, 
mouseMove, 
mouseUp, 
move, 
nextFocus, 
paintAll, 
postEvent, 
prepareImage, 
prepareImage, 
processComponentEvent, 
processHierarchyBoundsEvent, 
processHierarchyEvent, 
processInputMethodEvent, 
processMouseEvent, 
remove, 
removeComponentListener, 
removeFocusListener, 
removeHierarchyBoundsListener, 
removeHierarchyListener, 
removeInputMethodListener, 
removeKeyListener, 
removeMouseListener, 
removeMouseMotionListener, 
repaint, 
repaint, 
repaint, 
resize, 
resize, 
setBounds, 
setBounds, 
setComponentOrientation, 
setCursor, 
setDropTarget, 
setLocale, 
setLocation, 
setLocation, 
setName, 
setSize, 
setSize, 
show, 
show, 
size, 
toString, 
transferFocus

Methods inherited from class java.lang.Object

clone, 
equals, 
finalize, 
getClass, 
hashCode, 
notify, 
notifyAll, 
wait, 
wait, 
wait

Field Detail

noFocusBorder

protected static javax.swing.border.Border noFocusBorder

Constructor Detail

DefaultGridCellRenderer

public DefaultGridCellRenderer()

Creates a default table cell renderer.

Method Detail

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 javax.swing.JLabel
See Also:: JComponent.updateUI()

getComponent

public java.awt.Component getComponent(java.lang.Object value,
                                       boolean isSelected,
                                       boolean hasFocus,
                                       boolean isEditable,
                                       int row,
                                       int column,
                                       GridContext context)

Returns the grid cell renderer for a given cell.

Specified by:: getComponent in interface GridCellRenderer
Parameters:: value - the value to assign to the cell at (row, column); isSelected - true if cell is selected; isFocus - true if cell has focus; isEditable - true if cell is editable; row - the row of the cell to render; column - the column of the cell to render; context - the GridContext
Returns:: the default grid cell renderer as a component.