libjava/classpath/javax/swing/tree/TreeCellRenderer.java

/* TreeCellRenderer.java --
   Copyright (C) 2002, 2004, 2006,  Free Software Foundation, Inc.

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package javax.swing.tree;

import java.awt.Component;

import javax.swing.JTree;

/**
 * A <code>TreeCellRenderer</code> is used by the {@link JTree} component to
 * paint individual tree elements (nodes).
 *
 * @author Andrew Selkirk
 */
public interface TreeCellRenderer
{
  /**
   * Returns a component that has been configured to display one element (or
   * node) in a {@link JTree} component.  The arguments to this method are used
   * to pass in the value and state of the element to be rendered.
   *
   * @param tree  the tree.
   * @param value  the value to render.
   * @param selected  is the tree element selected?
   * @param expanded  is the tree element expanded?
   * @param leaf  is the tree element a leaf node?
   * @param row  the row index.
   * @param hasFocus  does the tree element have the focus?
   *
   * @return A component that is configured for rendering the tree element.
   */
  Component getTreeCellRendererComponent(JTree tree, Object value,
                                         boolean selected, boolean expanded,
                                         boolean leaf, int row,
                                         boolean hasFocus);

}