treeviewrenderer.java

来自「一个OR Mapping 工具」· Java 代码 · 共 70 行

package org.dbgen.view;

/**
 * This type was created in VisualAge.
 */
import java.awt.*;
import javax.swing.*;
public class TreeViewRenderer extends javax.swing.JLabel implements javax.swing.tree.TreeCellRenderer {
  static ImageIcon tableImage = new ImageIcon((new Table_e16x16()).getImage());
  static ImageIcon projectOpenImage = new ImageIcon((new ProjectOpen_e16x16()).getImage());
  static ImageIcon projectCloseImage = new ImageIcon((new ProjectClose_e16x16()).getImage());

  static JLabel renderer = new JLabel(tableImage);

  static {
    renderer.setOpaque(true);
    renderer.setHorizontalAlignment( SwingConstants.LEFT);
  }

  /**
   * TreeViewRenderer constructor comment.
   */
  public TreeViewRenderer() {
    super();
  }

  /**
   * getTreeCellRendererComponent method comment.
   */
  public java.awt.Component getTreeCellRendererComponent(javax.swing.JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {

    if ( value == null )
      return renderer;

    renderer.setFont(tree.getFont());

    Object userObj = ((javax.swing.tree.DefaultMutableTreeNode) value).getUserObject();


    if ( userObj != null && userObj instanceof org.dbgen.Table )
      renderer.setIcon(tableImage);
    else if (expanded)
      renderer.setIcon(projectOpenImage);
    else
      renderer.setIcon(projectCloseImage);

    if (selected)
    {
      //	  renderer.setForeground( Color.white );
      //	  renderer.setBackground( UIManager.getColor("Table.focusCellBackground") );
      renderer.setForeground(tree.getBackground());
      renderer.setBackground(tree.getForeground());
    } else

    {
      renderer.setBackground( tree.getBackground() );
      renderer.setForeground( tree.getForeground() );
    }

    renderer.setText(value.toString());

    /*
     JTextField txt = new JTextField();
     label.setFont(txt.getFont());
     */

    return renderer;
  }
}