是否能够以编程方式在JTree中选择多个树节点?
我按tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);
我需要的一切 - 让我的应用程序能够以编程方式选择一些节点。但我没有找到如何做到这一点的方式。有人可以提出如何解决这个问题的建议吗?
由于
答案 0 :(得分:6)
请参阅:
答案 1 :(得分:6)
import java.awt.Dimension;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
public class TreeWithMultiDiscontiguousSelections {
public static void main(String[] argv) {
JTree tree = new JTree();
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);
int treeSelectedRows[] = {3, 1};
tree.setSelectionRows(treeSelectedRows);
TreeSelectionListener treeSelectionListener = new TreeSelectionListener() {
@Override
public void valueChanged(TreeSelectionEvent treeSelectionEvent) {
JTree treeSource = (JTree) treeSelectionEvent.getSource();
System.out.println("Min: " + treeSource.getMinSelectionRow());
System.out.println("Max: " + treeSource.getMaxSelectionRow());
System.out.println("Lead: " + treeSource.getLeadSelectionRow());
System.out.println("Row: " + treeSource.getSelectionRows()[0]);
}
};
tree.addTreeSelectionListener(treeSelectionListener);
JFrame frame = new JFrame("JTree With Multi-Discontiguous selection");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new JScrollPane(tree));
frame.setPreferredSize(new Dimension(380, 320));
frame.setLocation(150, 150);
frame.pack();
frame.setVisible(true);
}
private TreeWithMultiDiscontiguousSelections() {
}
}
答案 2 :(得分:0)
将此用于您的JTree
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.CONTIGUOUS_TREE_SELECTION);
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);