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Class com.sun.java.swing.CellRendererPane 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----com.sun.java.swing.CellRendererPane
public class CellRendererPane
extends Container
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);

Constructor Index

o CellRendererPane()

Method Index

o addImpl(Component, Object, int)
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).<
o invalidate()
Overridden to avoid propogating a invalidate up the tree when the cell renderer child is configured.
o paint(Graphics)
Shouldn't be called.
o paintComponent(Graphics, Component, Container, int, int, int, int)
Paint a cell renderer component c on graphics object g.
o paintComponent(Graphics, Component, Container, Rectangle)
Calls this.paintComponent() with the rectangles x,y,width,height fields.
o repaint(long, int, int, int, int)
Overridden to avoid propogating a repaint up the tree when the cell renderer child is configured.
o update(Graphics)
Shouldn't be called.

Constructors

o CellRendererPane 
 public CellRendererPane()

Methods

o repaint 
 public void repaint(long tm,
                     int x,
                     int y,
                     int width,
                     int height)
Overridden to avoid propogating a repaint up the tree when the cell renderer child is configured.

Overrides:
repaint in class Component
o invalidate 
 public void invalidate()
Overridden to avoid propogating a invalidate up the tree when the cell renderer child is configured.

Overrides:
invalidate in class Container
o paint 
 public void paint(Graphics g)
Shouldn't be called.

Overrides:
paint in class Container
o update 
 public void update(Graphics g)
Shouldn't be called.

Overrides:
update in class Container
o addImpl 
 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).<

Overrides:
addImpl in class Container
o paintComponent 
 public void paintComponent(Graphics g,
                            Component c,
                            Container p,
                            int x,
                            int y,
                            int w,
                            int h)
Paint a cell renderer component c on graphics object g. Before the component is drawn it's reparented to this (if that's neccessary), it's bounds are set to w,y and the graphics object is (effectively) translated to x,y. After the component is painted it's bounds are reset to -w, -h, 0, 0 so that, if it's the last renderer component painted, it will not start consuming input. The Container p is the component we're actually drawing on, typically it's equal to this.getParent().

o paintComponent 
 public void paintComponent(Graphics g,
                            Component c,
                            Container p,
                            Rectangle r)
Calls this.paintComponent() with the rectangles x,y,width,height fields. 

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