tooltiptreeexample.java

tame,扩展了好多SWing组件:JTable

/* (swing1.1beta3) swing#948 */
package tame.examples;

import java.awt.BorderLayout;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreePath;

/**
@author Nobuo Tamemasa
@version 1.0 11/09/98
*/
public class ToolTipTreeExample extends JFrame {
  public ToolTipTreeExample() {
    super("ToolTipTreeExample");
    String[][] strs = {{"swing", "boat"    },     // 0
		       {"platf", "paltform"},     // 1
		       {"basic", "fortran" },     // 2
		       {"metal", "heavy"   },     // 3
		       {"JTree", "three"  }};     // 4

    ToolTipTreeNode[] nodes = new ToolTipTreeNode[strs.length];
    for (int i=0;i<strs.length;i++) {
      nodes[i] = new ToolTipTreeNode(strs[i][0],strs[i][1]);
    }
    nodes[0].add(nodes[1]);
    nodes[1].add(nodes[2]);
    nodes[1].add(nodes[3]);
    nodes[0].add(nodes[4]);
    JTree tree = new JTree( nodes[0] ){
      public String getToolTipText(MouseEvent evt) {
	if (getRowForLocation(evt.getX(), evt.getY()) == -1) return null;
	TreePath curPath = getPathForLocation(evt.getX(), evt.getY());
	return ((ToolTipTreeNode)curPath.getLastPathComponent()).getToolTipText();
      }
    };
    tree.setToolTipText("");
    JScrollPane sp = new JScrollPane(tree);
    getContentPane().add(sp, BorderLayout.CENTER);
  }

  public static void main(String args[]) {
    ToolTipTreeExample frame = new ToolTipTreeExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {System.exit(0);}
    });
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

/**
@version 1.0 11/09/98
@author Nobuo Tamemasa
*/
class ToolTipTreeNode extends DefaultMutableTreeNode {
  private String toolTipText;

  public ToolTipTreeNode(String str, String toolTipText) {
    super(str);
    this.toolTipText = toolTipText;
  }

  public String getToolTipText() {
    return toolTipText;
  }
}