Java by API/javax.swing/JTree — различия между версиями

Версия 17:43, 31 мая 2010

Содержание

1 JTree: addTreeSelectionListener(TreeSelectionListener tsl)
2 JTree: addTreeWillExpandListener(TreeWillExpandListener tel)
3 JTree: convertValueToText(Object v,boolean s,boolean e,boolean l,int r,boolean h)
4 JTree.DynamicUtilTreeNode: createChildren(DefaultMutableTreeNode parent, Object children)
5 JTree: getCellRenderer()
6 JTree: getLeadSelectionRow()
7 JTree: getMaxSelectionRow()
8 JTree: getMinSelectionRow()
9 JTree: getNextMatch(String prefix, int startingRow, Bias bias)
10 JTree: getPathForLocation(int x, int y)
11 JTree: getRowHeight()
12 JTree: getSelectionRows()
13 JTree: putClientProperty("JTree.lineStyle", "None")
14 JTree: setAutoscrolls(boolean b)
15 JTree: setCellEditor(TreeCellEditor editor)
16 JTree: setExpandedState(TreePath path, boolean state)
17 JTree: setRowHeight(int rowHeight)
18 JTree: setTransferHandler(TransferHandler newHandler) (Drag and drop files from file explore)
19 new JTree()
20 new JTree(TreeNode root)
21 new JTree(Vector vector)
22 Tree.closedIcon
23 Tree.collapsedIcon
24 Tree.expandedIcon
25 Tree.leafIcon
26 Tree.openIcon

JTree: addTreeSelectionListener(TreeSelectionListener tsl)

  
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.io.File;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
public class MainClass extends JPanel {
  public MainClass(File dir) {
    setLayout(new BorderLayout());
    JTree tree = new JTree(addNodes(null, dir));
    tree.addTreeSelectionListener(new TreeSelectionListener() {
      public void valueChanged(TreeSelectionEvent e) {
        DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.getPath().getLastPathComponent();
        System.out.println("You selected " + node);
      }
    });
    JScrollPane scrollpane = new JScrollPane();
    scrollpane.getViewport().add(tree);
    add(BorderLayout.CENTER, scrollpane);
  }
  DefaultMutableTreeNode addNodes(DefaultMutableTreeNode curTop, File dir) {
    String curPath = dir.getPath();
    DefaultMutableTreeNode curDir = new DefaultMutableTreeNode(curPath);
    if (curTop != null) {
      curTop.add(curDir);
    }
    ArrayList ol = new ArrayList();
    String[] tmp = dir.list();
    for (int i = 0; i < tmp.length; i++)
      ol.add(tmp[i]);
    File f;
    ArrayList files = new ArrayList();
    for (int i = 0; i < ol.size(); i++) {
      String thisObject = (String) ol.get(i);
      String newPath;
      if (curPath.equals("."))
        newPath = thisObject;
      else
        newPath = curPath + File.separator + thisObject;
      if ((f = new File(newPath)).isDirectory())
        addNodes(curDir, f);
      else
        files.add(thisObject);
    }
    for (int fnum = 0; fnum < files.size(); fnum++)
      curDir.add(new DefaultMutableTreeNode(files.get(fnum)));
    return curDir;
  }
  public Dimension getMinimumSize() {
    return new Dimension(200, 400);
  }
  public Dimension getPreferredSize() {
    return new Dimension(200, 400);
  }
  public static void main(String[] av) {
    JFrame frame = new JFrame("MainClass");
    frame.setForeground(Color.black);
    frame.setBackground(Color.lightGray);
    Container cp = frame.getContentPane();
    cp.add(new MainClass(new File(".")));
    frame.pack();
    frame.setVisible(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
}

JTree: addTreeWillExpandListener(TreeWillExpandListener tel)

  
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeWillExpandListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.ExpandVetoException;
import javax.swing.tree.TreePath;
public class Main {
  public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    root.add(new DefaultMutableTreeNode("A"));
    root.add(new DefaultMutableTreeNode("B"));
    root.add(new DefaultMutableTreeNode("C"));
    JTree tree = new JTree(root);
    TreeWillExpandListener treeWillExpandListener = new TreeWillExpandListener() {
      public void treeWillCollapse(TreeExpansionEvent treeExpansionEvent)
          throws ExpandVetoException {
        TreePath path = treeExpansionEvent.getPath();
        DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
        String data = node.getUserObject().toString();
        System.out.println("WillCollapse: " + data);
      }
      public void treeWillExpand(TreeExpansionEvent treeExpansionEvent) throws ExpandVetoException {
        TreePath path = treeExpansionEvent.getPath();
        DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
        String data = node.getUserObject().toString();
        System.out.println("WillExpand: " + data);
      }
    };
    tree.addTreeWillExpandListener(treeWillExpandListener);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: convertValueToText(Object v,boolean s,boolean e,boolean l,int r,boolean h)

  
import java.awt.BorderLayout;
import java.awt.ruponent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.ToolTipManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellRenderer;
public class MainClass {
  public static void main(final String args[]) {
    JFrame frame = new JFrame("Tree Tips");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTree tree = new JTree(new String[]{"a","b","c"});
    ToolTipManager.sharedInstance().registerComponent(tree);
    TreeCellRenderer renderer = new ToolTipTreeCellRenderer();
    tree.setCellRenderer(renderer);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}
class ToolTipTreeCellRenderer implements TreeCellRenderer {
  DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer();
  public ToolTipTreeCellRenderer() {
  }
  public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected,
      boolean expanded, boolean leaf, int row, boolean hasFocus) {
    Object tip = null;
    if (value != null) {
      
      if (value instanceof DefaultMutableTreeNode) {
        tip = ((DefaultMutableTreeNode) value).getUserObject();
      } else {
        tip = tree.convertValueToText(value, selected, expanded, leaf, row, hasFocus);
      }
      renderer.setToolTipText((String)tip);
    }
    renderer.setText((String)tip);
    return renderer;
  }
}

JTree.DynamicUtilTreeNode: createChildren(DefaultMutableTreeNode parent, Object children)

  
import java.awt.BorderLayout;
import java.util.Hashtable;
import java.util.Properties;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
public class MainClass {
  public static void main(final String args[]) {
    JFrame frame = new JFrame("DynamicUtilTreeNode Hashtable");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    Hashtable<Object, Object> hashtable = new Hashtable<Object, Object>();
    hashtable.put("A", args);
    hashtable.put("B", new String[] { "a", "b", "c" });
    Hashtable<Object, Object> innerHashtable = new Hashtable<Object, Object>();
    Properties props = System.getProperties();
    innerHashtable.put(props, props);
    hashtable.put("C", innerHashtable);
    JTree.DynamicUtilTreeNode.createChildren(root, hashtable);
    JTree tree = new JTree(root);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: getCellRenderer()

  
import java.awt.BorderLayout;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellEditor;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellEditor;
public class MainClass {
  public static void main(final String args[]) {
    JFrame frame = new JFrame("Editable Tree");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTree tree = new JTree();
    tree.setEditable(true);
    DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) tree.getCellRenderer();
    String elements[] = { "A", "B", "C", "D" };
    JComboBox comboBox = new JComboBox(elements);
    comboBox.setEditable(true);
    TreeCellEditor comboEditor = new DefaultCellEditor(comboBox);
    TreeCellEditor editor = new DefaultTreeCellEditor(tree, renderer, comboEditor);
    tree.setCellEditor(editor);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: getLeadSelectionRow()

  
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
public class Main {
  public static void main(String args[]) {
    String title = "JTree Sample";
    JFrame frame = new JFrame(title);
    JTree tree = new JTree();
    TreeSelectionListener treeSelectionListener = new TreeSelectionListener() {
      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);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: getMaxSelectionRow()

  

import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
public class Main {
  public static void main(String args[]) {
    String title = "JTree Sample";
    JFrame frame = new JFrame(title);
    JTree tree = new JTree();
    TreeSelectionListener treeSelectionListener = new TreeSelectionListener() {
      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);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: getMinSelectionRow()

  
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
public class Main {
  public static void main(String args[]) {
    String title = "JTree Sample";
    JFrame frame = new JFrame(title);
    JTree tree = new JTree();
    TreeSelectionListener treeSelectionListener = new TreeSelectionListener() {
      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);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: getNextMatch(String prefix, int startingRow, Bias bias)

  
import javax.swing.JTree;
import javax.swing.text.Position;
import javax.swing.tree.TreePath;
public class Main {
  public static void main(String[] argv) throws Exception {
    JTree tree = new JTree();
    int startRow = tree.getRowCount() - 1;
    String prefix = "b";
    TreePath path = tree.getNextMatch(prefix, startRow, Position.Bias.Backward);
    System.out.println(path);
  }
}

JTree: getPathForLocation(int x, int y)

  
import java.awt.BorderLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.ScrollPaneConstants;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreePath;
public class MainClass extends JPanel {
  public MainClass() {
    final JTree tree;
    final JTextField jtf;
    DefaultMutableTreeNode top = new DefaultMutableTreeNode("Options");
    DefaultMutableTreeNode a = new DefaultMutableTreeNode("A");
    top.add(a);
    DefaultMutableTreeNode a1 = new DefaultMutableTreeNode("A1");
    a.add(a1);
    DefaultMutableTreeNode a2 = new DefaultMutableTreeNode("A2");
    a.add(a2);
    DefaultMutableTreeNode b = new DefaultMutableTreeNode("B");
    top.add(b);
    DefaultMutableTreeNode b1 = new DefaultMutableTreeNode("B1");
    b.add(b1);
    DefaultMutableTreeNode b2 = new DefaultMutableTreeNode("B2");
    b.add(b2);
    DefaultMutableTreeNode b3 = new DefaultMutableTreeNode("B3");
    b.add(b3);
    tree = new JTree(top);
    JScrollPane jsp = new JScrollPane(tree);
    add(jsp, BorderLayout.CENTER);
    jtf = new JTextField("", 20);
    add(jtf, BorderLayout.SOUTH);
    tree.addMouseListener(new MouseAdapter() {
      public void mouseClicked(MouseEvent me) {
        TreePath tp = tree.getPathForLocation(me.getX(), me.getY());
        if (tp != null)
          jtf.setText(tp.toString());
        else
          jtf.setText("");
      }
    });
  }
  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.getContentPane().add(new MainClass());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200, 200);
    frame.setVisible(true);
  }
}

JTree: getRowHeight()

  
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;
public class MainClass {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Changed Renderer");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTree tree = new JTree();
    DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) tree.getCellRenderer();
    renderer.setFont(new Font("Dialog", Font.BOLD | Font.ITALIC, 32));
    int rowHeight = tree.getRowHeight();
    if (rowHeight <= 0) {
      tree.setRowHeight(rowHeight - 1);
    }
    Color backgroundSelection = renderer.getBackgroundSelectionColor();
    renderer.setBackgroundSelectionColor(Color.blue);
    renderer.setBackgroundNonSelectionColor(backgroundSelection);
    // Swap text colors
    Color textSelection = renderer.getTextSelectionColor();
    renderer.setTextSelectionColor(Color.green);
    renderer.setTextNonSelectionColor(textSelection);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: getSelectionRows()

  
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
public class Main {
  public static void main(String args[]) {
    String title = "JTree Sample";
    JFrame frame = new JFrame(title);
    JTree tree = new JTree();
    TreeSelectionListener treeSelectionListener = new TreeSelectionListener() {
      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);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: putClientProperty("JTree.lineStyle", "None")

  
import java.awt.BorderLayout;
import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
public class MainClass {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Tree Lines");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Box box = Box.createHorizontalBox();
    JTree tree1 = new JTree();
    JScrollPane scrollPane1 = new JScrollPane(tree1);
    tree1.setAutoscrolls(true);
    JTree tree2 = new JTree();
    tree2.putClientProperty("JTree.lineStyle", "None");
    JScrollPane scrollPane2 = new JScrollPane(tree2);
    box.add(scrollPane1, BorderLayout.WEST);
    box.add(scrollPane2, BorderLayout.EAST);
    frame.add(box, BorderLayout.CENTER);
    frame.setSize(300, 240);
    frame.setVisible(true);
  }
}

JTree: setAutoscrolls(boolean b)

  
import java.awt.BorderLayout;
import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
public class MainClass {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Tree Lines");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Box box = Box.createHorizontalBox();
    JTree tree1 = new JTree();
    JScrollPane scrollPane1 = new JScrollPane(tree1);
    tree1.setAutoscrolls(true);
    JTree tree2 = new JTree();
    tree2.putClientProperty("JTree.lineStyle", "None");
    JScrollPane scrollPane2 = new JScrollPane(tree2);
    box.add(scrollPane1, BorderLayout.WEST);
    box.add(scrollPane2, BorderLayout.EAST);
    frame.add(box, BorderLayout.CENTER);
    frame.setSize(300, 240);
    frame.setVisible(true);
  }
}

JTree: setCellEditor(TreeCellEditor editor)

  
import java.awt.BorderLayout;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellEditor;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellEditor;
public class MainClass {
  public static void main(final String args[]) {
    JFrame frame = new JFrame("Editable Tree");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTree tree = new JTree();
    tree.setEditable(true);
    DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) tree.getCellRenderer();
    String elements[] = { "A", "B", "C", "D" };
    JComboBox comboBox = new JComboBox(elements);
    comboBox.setEditable(true);
    TreeCellEditor comboEditor = new DefaultCellEditor(comboBox);
    TreeCellEditor editor = new DefaultTreeCellEditor(tree, renderer, comboEditor);
    tree.setCellEditor(editor);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: setExpandedState(TreePath path, boolean state)

  

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.TreePath;
public class Main {
  public static void main(String[] argv) {
    JTree tree = new JTree() {
      protected void setExpandedState(TreePath path, boolean state) {
        
        if (state) {
          super.setExpandedState(path, state);
        }
      }
    };
    JFrame frame = new JFrame("Ignore all collapse requests");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(new JScrollPane(tree));
    frame.setSize(380, 320);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
  }
}

JTree: setRowHeight(int rowHeight)

  
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;
public class MainClass {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Changed Renderer");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTree tree = new JTree();
    DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) tree.getCellRenderer();
    renderer.setFont(new Font("Dialog", Font.BOLD | Font.ITALIC, 32));
    int rowHeight = tree.getRowHeight();
    if (rowHeight <= 0) {
      tree.setRowHeight(rowHeight - 1);
    }
    Color backgroundSelection = renderer.getBackgroundSelectionColor();
    renderer.setBackgroundSelectionColor(Color.blue);
    renderer.setBackgroundNonSelectionColor(backgroundSelection);
    // Swap text colors
    Color textSelection = renderer.getTextSelectionColor();
    renderer.setTextSelectionColor(Color.green);
    renderer.setTextNonSelectionColor(textSelection);
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

JTree: setTransferHandler(TransferHandler newHandler) (Drag and drop files from file explore)

  
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.TransferHandler;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeNode;
public class FSTest extends JFrame {
  public FSTest() {
    super("FSTree Component Test");
    setSize(300, 300);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    FSTree fst = new FSTree(new DefaultMutableTreeNode("Starter"));
    getContentPane().add(new JScrollPane(fst));
    setVisible(true);
  }
  public static void main(String args[]) {
    new FSTest();
  }
}
class FSTree extends JTree {
  public FSTree() {
    super();
    init();
  }
  public FSTree(TreeModel newModel) {
    super(newModel);
    init();
  }
  public FSTree(TreeNode root) {
    super(root);
    init();
  }
  public FSTree(TreeNode root, boolean asks) {
    super(root, asks);
    init();
  }
  private void init() {
    setDragEnabled(false);
    setTransferHandler(new FSTransfer());
  }
  public class FSTransfer extends TransferHandler {
    public boolean importData(JComponent comp, Transferable t) {
      if (!(comp instanceof FSTree)) {
        return false;
      }
      if (!t.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
        return false;
      }
      FSTree tree = (FSTree) comp;
      DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
      DefaultMutableTreeNode root = (DefaultMutableTreeNode) model.getRoot();
      try {
        List data = (List) t.getTransferData(DataFlavor.javaFileListFlavor);
        Iterator i = data.iterator();
        while (i.hasNext()) {
          File f = (File) i.next();
          root.add(new DefaultMutableTreeNode(f.getName()));
        }
        model.reload();
        return true;
      } catch (UnsupportedFlavorException ufe) {
        System.err.println("Ack! we should not be here.\nBad Flavor.");
      } catch (IOException ioe) {
        System.out.println("Something failed during import:\n" + ioe);
      }
      return false;
    }
    // We only support file lists on FSTrees...
    public boolean canImport(JComponent comp, DataFlavor[] transferFlavors) {
      if (comp instanceof FSTree) {
        for (int i = 0; i < transferFlavors.length; i++) {
          if (!transferFlavors[i].equals(DataFlavor.javaFileListFlavor)) {
            return false;
          }
        }
        return true;
      }
      return false;
    }
  }
}

new JTree()

  
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
public class MainClass {
  public static void main(String args[]) {
    JFrame f = new JFrame("JTree Sample");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTree tree = new JTree();
    JScrollPane scrollPane = new JScrollPane(tree);
    f.add(scrollPane, BorderLayout.CENTER);
    f.setSize(300, 200);
    f.setVisible(true);
  }
}

new JTree(TreeNode root)

  
import java.awt.BorderLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.ScrollPaneConstants;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreePath;
public class MainClass extends JPanel {
  public MainClass() {
    final JTree tree;
    final JTextField jtf;
    DefaultMutableTreeNode top = new DefaultMutableTreeNode("Options");
    DefaultMutableTreeNode a = new DefaultMutableTreeNode("A");
    top.add(a);
    DefaultMutableTreeNode a1 = new DefaultMutableTreeNode("A1");
    a.add(a1);
    DefaultMutableTreeNode a2 = new DefaultMutableTreeNode("A2");
    a.add(a2);
    DefaultMutableTreeNode b = new DefaultMutableTreeNode("B");
    top.add(b);
    DefaultMutableTreeNode b1 = new DefaultMutableTreeNode("B1");
    b.add(b1);
    DefaultMutableTreeNode b2 = new DefaultMutableTreeNode("B2");
    b.add(b2);
    DefaultMutableTreeNode b3 = new DefaultMutableTreeNode("B3");
    b.add(b3);
    tree = new JTree(top);
    JScrollPane jsp = new JScrollPane(tree);
    add(jsp, BorderLayout.CENTER);
    jtf = new JTextField("", 20);
    add(jtf, BorderLayout.SOUTH);
    tree.addMouseListener(new MouseAdapter() {
      public void mouseClicked(MouseEvent me) {
        TreePath tp = tree.getPathForLocation(me.getX(), me.getY());
        if (tp != null)
          jtf.setText(tp.toString());
        else
          jtf.setText("");
      }
    });
  }
  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.getContentPane().add(new MainClass());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200, 200);
    frame.setVisible(true);
  }
}

new JTree(Vector vector)

  
import java.awt.BorderLayout;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;
public class MainClass {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Swing Package Hierarchy");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Vector rootVector = new TreeVector("A", new String[] { "a" });
    JTree tree = new JTree(rootVector);
    tree.setRootVisible(true);
    TreeModel model = tree.getModel();
    model.valueForPathChanged(new TreePath(model.getRoot()), "javax.swing");
    ((DefaultTreeModel) model).reload();
    JScrollPane scrollPane = new JScrollPane(tree);
    frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 300);
    frame.setVisible(true);
  }
}
class TreeVector extends Vector {
  String name;
  TreeVector(String name) {
    this.name = name;
  }
  TreeVector(String name, Object elements[]) {
    this.name = name;
    for (int i = 0, n = elements.length; i < n; i++) {
      add(elements[i]);
    }
  }
  public String toString() {
    return name;
  }
}

Tree.closedIcon

  
import java.awt.BorderLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
public class MainClass extends JFrame {
  JTree tree;
  DefaultTreeModel treeModel;
  public MainClass() {
    super("Tree Test Example");
    setSize(200, 150);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    UIManager.put("Tree.leafIcon", new ImageIcon("leafIcon.gif"));
    UIManager.put("Tree.openIcon", new ImageIcon("openIcon.gif"));
    UIManager.put("Tree.closedIcon", new ImageIcon("closedIcon.gif"));
    UIManager.put("Tree.expandedIcon", new ImageIcon("expandedIcon.gif"));
    UIManager.put("Tree.collapsedIcon", new ImageIcon("collapsedIcon"));
  }
  public void init() {
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    DefaultMutableTreeNode subroot = new DefaultMutableTreeNode("SubRoot");
    DefaultMutableTreeNode leaf1 = new DefaultMutableTreeNode("Leaf 1");
    DefaultMutableTreeNode leaf2 = new DefaultMutableTreeNode("Leaf 2");
    treeModel = new DefaultTreeModel(root);
    tree = new JTree(treeModel);
    treeModel.insertNodeInto(subroot, root, 0);
    subroot.add(leaf1);
    root.add(leaf2);
    tree.putClientProperty("JTree.lineStyle", "Angled");
    getContentPane().add(tree, BorderLayout.CENTER);
  }
  public static void main(String args[]) {
    MainClass tt = new MainClass();
    tt.init();
    tt.setVisible(true);
  }
}

Tree.collapsedIcon

  
import java.awt.BorderLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
public class MainClass extends JFrame {
  JTree tree;
  DefaultTreeModel treeModel;
  public MainClass() {
    super("Tree Test Example");
    setSize(200, 150);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    UIManager.put("Tree.leafIcon", new ImageIcon("leafIcon.gif"));
    UIManager.put("Tree.openIcon", new ImageIcon("openIcon.gif"));
    UIManager.put("Tree.closedIcon", new ImageIcon("closedIcon.gif"));
    UIManager.put("Tree.expandedIcon", new ImageIcon("expandedIcon.gif"));
    UIManager.put("Tree.collapsedIcon", new ImageIcon("collapsedIcon"));
  }
  public void init() {
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    DefaultMutableTreeNode subroot = new DefaultMutableTreeNode("SubRoot");
    DefaultMutableTreeNode leaf1 = new DefaultMutableTreeNode("Leaf 1");
    DefaultMutableTreeNode leaf2 = new DefaultMutableTreeNode("Leaf 2");
    treeModel = new DefaultTreeModel(root);
    tree = new JTree(treeModel);
    treeModel.insertNodeInto(subroot, root, 0);
    subroot.add(leaf1);
    root.add(leaf2);
    tree.putClientProperty("JTree.lineStyle", "Angled");
    getContentPane().add(tree, BorderLayout.CENTER);
  }
  public static void main(String args[]) {
    MainClass tt = new MainClass();
    tt.init();
    tt.setVisible(true);
  }
}

Tree.expandedIcon

  
import java.awt.BorderLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
public class MainClass extends JFrame {
  JTree tree;
  DefaultTreeModel treeModel;
  public MainClass() {
    super("Tree Test Example");
    setSize(200, 150);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    UIManager.put("Tree.leafIcon", new ImageIcon("leafIcon.gif"));
    UIManager.put("Tree.openIcon", new ImageIcon("openIcon.gif"));
    UIManager.put("Tree.closedIcon", new ImageIcon("closedIcon.gif"));
    UIManager.put("Tree.expandedIcon", new ImageIcon("expandedIcon.gif"));
    UIManager.put("Tree.collapsedIcon", new ImageIcon("collapsedIcon"));
  }
  public void init() {
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    DefaultMutableTreeNode subroot = new DefaultMutableTreeNode("SubRoot");
    DefaultMutableTreeNode leaf1 = new DefaultMutableTreeNode("Leaf 1");
    DefaultMutableTreeNode leaf2 = new DefaultMutableTreeNode("Leaf 2");
    treeModel = new DefaultTreeModel(root);
    tree = new JTree(treeModel);
    treeModel.insertNodeInto(subroot, root, 0);
    subroot.add(leaf1);
    root.add(leaf2);
    tree.putClientProperty("JTree.lineStyle", "Angled");
    getContentPane().add(tree, BorderLayout.CENTER);
  }
  public static void main(String args[]) {
    MainClass tt = new MainClass();
    tt.init();
    tt.setVisible(true);
  }
}

Tree.leafIcon

  
import java.awt.BorderLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
public class MainClass extends JFrame {
  JTree tree;
  DefaultTreeModel treeModel;
  public MainClass() {
    super("Tree Test Example");
    setSize(200, 150);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    UIManager.put("Tree.leafIcon", new ImageIcon("leafIcon.gif"));
    UIManager.put("Tree.openIcon", new ImageIcon("openIcon.gif"));
    UIManager.put("Tree.closedIcon", new ImageIcon("closedIcon.gif"));
    UIManager.put("Tree.expandedIcon", new ImageIcon("expandedIcon.gif"));
    UIManager.put("Tree.collapsedIcon", new ImageIcon("collapsedIcon"));
  }
  public void init() {
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    DefaultMutableTreeNode subroot = new DefaultMutableTreeNode("SubRoot");
    DefaultMutableTreeNode leaf1 = new DefaultMutableTreeNode("Leaf 1");
    DefaultMutableTreeNode leaf2 = new DefaultMutableTreeNode("Leaf 2");
    treeModel = new DefaultTreeModel(root);
    tree = new JTree(treeModel);
    treeModel.insertNodeInto(subroot, root, 0);
    subroot.add(leaf1);
    root.add(leaf2);
    tree.putClientProperty("JTree.lineStyle", "Angled");
    getContentPane().add(tree, BorderLayout.CENTER);
  }
  public static void main(String args[]) {
    MainClass tt = new MainClass();
    tt.init();
    tt.setVisible(true);
  }
}

Tree.openIcon

  
import java.awt.BorderLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
public class MainClass extends JFrame {
  JTree tree;
  DefaultTreeModel treeModel;
  public MainClass() {
    super("Tree Test Example");
    setSize(200, 150);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    UIManager.put("Tree.leafIcon", new ImageIcon("leafIcon.gif"));
    UIManager.put("Tree.openIcon", new ImageIcon("openIcon.gif"));
    UIManager.put("Tree.closedIcon", new ImageIcon("closedIcon.gif"));
    UIManager.put("Tree.expandedIcon", new ImageIcon("expandedIcon.gif"));
    UIManager.put("Tree.collapsedIcon", new ImageIcon("collapsedIcon"));
  }
  public void init() {
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
    DefaultMutableTreeNode subroot = new DefaultMutableTreeNode("SubRoot");
    DefaultMutableTreeNode leaf1 = new DefaultMutableTreeNode("Leaf 1");
    DefaultMutableTreeNode leaf2 = new DefaultMutableTreeNode("Leaf 2");
    treeModel = new DefaultTreeModel(root);
    tree = new JTree(treeModel);
    treeModel.insertNodeInto(subroot, root, 0);
    subroot.add(leaf1);
    root.add(leaf2);
    tree.putClientProperty("JTree.lineStyle", "Angled");
    getContentPane().add(tree, BorderLayout.CENTER);
  }
  public static void main(String args[]) {
    MainClass tt = new MainClass();
    tt.init();
    tt.setVisible(true);
  }
}

Java by API/javax.swing/JTree — различия между версиями

Версия 17:43, 31 мая 2010

Содержание

JTree: addTreeSelectionListener(TreeSelectionListener tsl)

JTree: addTreeWillExpandListener(TreeWillExpandListener tel)

JTree: convertValueToText(Object v,boolean s,boolean e,boolean l,int r,boolean h)

JTree.DynamicUtilTreeNode: createChildren(DefaultMutableTreeNode parent, Object children)

JTree: getCellRenderer()

JTree: getLeadSelectionRow()

JTree: getMaxSelectionRow()

JTree: getMinSelectionRow()

JTree: getNextMatch(String prefix, int startingRow, Bias bias)

JTree: getPathForLocation(int x, int y)

JTree: getRowHeight()

JTree: getSelectionRows()

JTree: putClientProperty("JTree.lineStyle", "None")

JTree: setAutoscrolls(boolean b)

JTree: setCellEditor(TreeCellEditor editor)

JTree: setExpandedState(TreePath path, boolean state)

JTree: setRowHeight(int rowHeight)

JTree: setTransferHandler(TransferHandler newHandler) (Drag and drop files from file explore)

new JTree()

new JTree(TreeNode root)

new JTree(Vector vector)

Tree.closedIcon

Tree.collapsedIcon

Tree.expandedIcon

Tree.leafIcon

Tree.openIcon

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Текущая версия на 14:19, 31 мая 2010 (просмотреть исходный код) Admin (обсуждение \| вклад) м (1 версия)	Версия 17:43, 31 мая 2010 (просмотреть исходный код) (обсуждение) Следующая правка →
(нет различий)