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JavaTM 2 Platform Std. Ed. v1.4.2 |
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Identifies components that can be used as "rubber stamps" to paint the cells in a JList. For example, to use a JLabel as a ListCellRenderer, you would write something like this:
class MyCellRenderer extends JLabel implements ListCellRenderer {
public MyCellRenderer() {
setOpaque(true);
}
public Component getListCellRendererComponent(
JList list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus)
{
setText(value.toString());
setBackground(isSelected ? Color.red : Color.white);
setForeground(isSelected ? Color.white : Color.black);
return this;
}
}
JList,
DefaultListCellRenderer| Method Summary | |
Component |
getListCellRendererComponent(JList list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus)
Return a component that has been configured to display the specified value. |
| Method Detail |
public Component getListCellRendererComponent(JList list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus)
paint method is then called to
"render" the cell. If it is necessary to compute the dimensions
of a list because the list cells do not have a fixed size, this method
is called to generate a component on which getPreferredSize
can be invoked.
list - The JList we're painting.value - The value returned by list.getModel().getElementAt(index).index - The cells index.isSelected - True if the specified cell was selected.cellHasFocus - True if the specified cell has the focus.
JList,
ListSelectionModel,
ListModel
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JavaTM 2 Platform Std. Ed. v1.4.2 |
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Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.