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JavaTM 2 Platform Standard Edition |
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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--java.awt.Component | +--java.awt.Container | +--javax.swing.CellRendererPane
This class is inserted in between cell renderers and the components that use them. It just exists to thwart the repaint() and invalidate() methods which would otherwise propogate up the tree when the renderer was configured. It's used by the implementations of JTable, JTree, and JList. For example, here's how CellRendererPane is used in the code the paints each row in a JList:
cellRendererPane = new CellRendererPane(); ... Component rendererComponent = renderer.getListCellRendererComponent(); renderer.configureListCellRenderer(dataModel.getElementAt(row), row); cellRendererPane.paintComponent(g, rendererComponent, this, x, y, w, h);
A renderer component must override isShowing() and unconditionally return true to work correctly because the Swing paint does nothing for components with isShowing false.
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 | |
protected class |
CellRendererPane.AccessibleCellRendererPane
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Field Summary | |
protected AccessibleContext |
accessibleContext
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Fields inherited from class java.awt.Component |
BOTTOM_ALIGNMENT,
CENTER_ALIGNMENT,
LEFT_ALIGNMENT,
RIGHT_ALIGNMENT,
TOP_ALIGNMENT |
Constructor Summary | |
CellRendererPane()
Construct a CellRendererPane object. |
Method Summary | |
protected void |
addImpl(Component x,
Object constraints,
int index)
If the specified component is already a child of this then we don't bother doing anything - stacking order doesn't matter for cell renderer components (CellRendererPane doesn't paint anyway).< |
AccessibleContext |
getAccessibleContext()
Get the AccessibleContext associated with this CellRendererPane |
void |
invalidate()
Overridden to avoid propogating a invalidate up the tree when the cell renderer child is configured. |
void |
paint(Graphics g)
Shouldn't be called. |
void |
paintComponent(Graphics g,
Component c,
Container p,
int x,
int y,
int w,
int h)
Calls this.paintComponent(g, c, p, x, y, w, h, false). |
void |
paintComponent(Graphics g,
Component c,
Container p,
int x,
int y,
int w,
int h,
boolean shouldValidate)
Paint a cell renderer component c on graphics object g. |
void |
paintComponent(Graphics g,
Component c,
Container p,
Rectangle r)
Calls this.paintComponent() with the rectangles x,y,width,height fields. |
void |
update(Graphics g)
Shouldn't be called. |
Methods inherited from class java.awt.Container |
add,
add,
add,
add,
add,
addContainerListener,
addNotify,
countComponents,
deliverEvent,
doLayout,
findComponentAt,
findComponentAt,
getAlignmentX,
getAlignmentY,
getComponent,
getComponentAt,
getComponentAt,
getComponentCount,
getComponents,
getInsets,
getLayout,
getMaximumSize,
getMinimumSize,
getPreferredSize,
insets,
isAncestorOf,
layout,
list,
list,
locate,
minimumSize,
paintComponents,
paramString,
preferredSize,
print,
printComponents,
processContainerEvent,
processEvent,
remove,
remove,
removeAll,
removeContainerListener,
removeNotify,
setCursor,
setFont,
setLayout,
validate,
validateTree |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
wait,
wait,
wait |
Field Detail |
protected AccessibleContext accessibleContext
Constructor Detail |
public CellRendererPane()
Method Detail |
public void invalidate()
Container.validate()
,
Container.layout()
,
LayoutManager
public void paint(Graphics g)
g
- the specified Graphics windowComponent.update(java.awt.Graphics)
public void update(Graphics g)
g
- the specified Graphics windowComponent.update(java.awt.Graphics)
protected void addImpl(Component x, Object constraints, int index)
comp
- the component to be added.constraints
- an object expressing layout contraints
for this component.index
- the position in the container's list at which to
insert the component, where -1
means insert at the end.Container.add(java.awt.Component)
,
Container.add(java.awt.Component, int)
,
Container.add(java.awt.Component, java.lang.Object)
,
LayoutManager
public void paintComponent(Graphics g, Component c, Container p, int x, int y, int w, int h, boolean shouldValidate)
public void paintComponent(Graphics g, Component c, Container p, int x, int y, int w, int h)
public void paintComponent(Graphics g, Component c, Container p, Rectangle r)
public AccessibleContext getAccessibleContext()
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JavaTM 2 Platform Standard Edition |
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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |