Example usage for javax.swing JTree setTransferHandler

Introduction

In this page you can find the example usage for javax.swing JTree setTransferHandler.

Prototype

@BeanProperty(hidden = true, description = "Mechanism for transfer of data to and from the component")
public void setTransferHandler(TransferHandler newHandler) 

Source Link

Document

Sets the TransferHandler , which provides support for transfer of data into and out of this component via cut/copy/paste and drag and drop.

Usage

From source file:DndTree.java

public static void main(String args[]) {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel top = new JPanel(new BorderLayout());
    JLabel dragLabel = new JLabel("Drag me:");
    JTextField text = new JTextField();
    text.setDragEnabled(true);//from  ww  w.ja va  2 s . c o m
    top.add(dragLabel, BorderLayout.WEST);
    top.add(text, BorderLayout.CENTER);
    f.add(top, BorderLayout.NORTH);

    final JTree tree = new JTree();
    final DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
    tree.setTransferHandler(new TransferHandler() {
        public boolean canImport(TransferHandler.TransferSupport support) {
            if (!support.isDataFlavorSupported(DataFlavor.stringFlavor) || !support.isDrop()) {
                return false;
            }
            JTree.DropLocation dropLocation = (JTree.DropLocation) support.getDropLocation();
            return dropLocation.getPath() != null;
        }

        public boolean importData(TransferHandler.TransferSupport support) {
            if (!canImport(support)) {
                return false;
            }
            JTree.DropLocation dropLocation = (JTree.DropLocation) support.getDropLocation();
            TreePath path = dropLocation.getPath();
            Transferable transferable = support.getTransferable();

            String transferData;
            try {
                transferData = (String) transferable.getTransferData(DataFlavor.stringFlavor);
            } catch (IOException e) {
                return false;
            } catch (UnsupportedFlavorException e) {
                return false;
            }

            int childIndex = dropLocation.getChildIndex();
            if (childIndex == -1) {
                childIndex = model.getChildCount(path.getLastPathComponent());
            }

            DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(transferData);
            DefaultMutableTreeNode parentNode = (DefaultMutableTreeNode) path.getLastPathComponent();
            model.insertNodeInto(newNode, parentNode, childIndex);

            TreePath newPath = path.pathByAddingChild(newNode);
            tree.makeVisible(newPath);
            tree.scrollRectToVisible(tree.getPathBounds(newPath));
            return true;
        }
    });

    JScrollPane pane = new JScrollPane(tree);
    f.add(pane, BorderLayout.CENTER);

    tree.setDropMode(DropMode.USE_SELECTION);
    f.setSize(300, 400);
    f.setVisible(true);
}

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From source file:DndTree.java

public static void main(String args[]) {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel top = new JPanel(new BorderLayout());
    JLabel dragLabel = new JLabel("Drag me:");
    JTextField text = new JTextField();
    text.setDragEnabled(true);/*from w  w  w .  j  a v a 2  s. c  o m*/
    top.add(dragLabel, BorderLayout.WEST);
    top.add(text, BorderLayout.CENTER);
    f.add(top, BorderLayout.NORTH);

    final JTree tree = new JTree();
    final DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
    tree.setTransferHandler(new TransferHandler() {
        public boolean canImport(TransferHandler.TransferSupport support) {
            if (!support.isDataFlavorSupported(DataFlavor.stringFlavor) || !support.isDrop()) {
                return false;
            }
            JTree.DropLocation dropLocation = (JTree.DropLocation) support.getDropLocation();
            return dropLocation.getPath() != null;
        }

        public boolean importData(TransferHandler.TransferSupport support) {
            if (!canImport(support)) {
                return false;
            }
            JTree.DropLocation dropLocation = (JTree.DropLocation) support.getDropLocation();
            TreePath path = dropLocation.getPath();
            Transferable transferable = support.getTransferable();

            String transferData;
            try {
                transferData = (String) transferable.getTransferData(DataFlavor.stringFlavor);
            } catch (IOException e) {
                return false;
            } catch (UnsupportedFlavorException e) {
                return false;
            }

            int childIndex = dropLocation.getChildIndex();
            if (childIndex == -1) {
                childIndex = model.getChildCount(path.getLastPathComponent());
            }

            DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(transferData);
            DefaultMutableTreeNode parentNode = (DefaultMutableTreeNode) path.getLastPathComponent();
            model.insertNodeInto(newNode, parentNode, childIndex);

            TreePath newPath = path.pathByAddingChild(newNode);
            tree.makeVisible(newPath);
            tree.scrollRectToVisible(tree.getPathBounds(newPath));
            return true;
        }
    });

    JScrollPane pane = new JScrollPane(tree);
    f.add(pane, BorderLayout.CENTER);

    tree.setDropMode(DropMode.INSERT);
    f.setSize(300, 400);
    f.setVisible(true);
}

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From source file:DndTree.java

public static void main(String args[]) {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel top = new JPanel(new BorderLayout());
    JLabel dragLabel = new JLabel("Drag me:");
    JTextField text = new JTextField();
    text.setDragEnabled(true);/*from   w w w. j  av a  2 s.c  o m*/
    top.add(dragLabel, BorderLayout.WEST);
    top.add(text, BorderLayout.CENTER);
    f.add(top, BorderLayout.NORTH);

    final JTree tree = new JTree();
    final DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
    tree.setTransferHandler(new TransferHandler() {
        public boolean canImport(TransferHandler.TransferSupport support) {
            if (!support.isDataFlavorSupported(DataFlavor.stringFlavor) || !support.isDrop()) {
                return false;
            }
            JTree.DropLocation dropLocation = (JTree.DropLocation) support.getDropLocation();
            return dropLocation.getPath() != null;
        }

        public boolean importData(TransferHandler.TransferSupport support) {
            if (!canImport(support)) {
                return false;
            }
            JTree.DropLocation dropLocation = (JTree.DropLocation) support.getDropLocation();
            TreePath path = dropLocation.getPath();
            Transferable transferable = support.getTransferable();

            String transferData;
            try {
                transferData = (String) transferable.getTransferData(DataFlavor.stringFlavor);
            } catch (IOException e) {
                return false;
            } catch (UnsupportedFlavorException e) {
                return false;
            }

            int childIndex = dropLocation.getChildIndex();
            if (childIndex == -1) {
                childIndex = model.getChildCount(path.getLastPathComponent());
            }

            DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(transferData);
            DefaultMutableTreeNode parentNode = (DefaultMutableTreeNode) path.getLastPathComponent();
            model.insertNodeInto(newNode, parentNode, childIndex);

            TreePath newPath = path.pathByAddingChild(newNode);
            tree.makeVisible(newPath);
            tree.scrollRectToVisible(tree.getPathBounds(newPath));
            return true;
        }
    });

    JScrollPane pane = new JScrollPane(tree);
    f.add(pane, BorderLayout.CENTER);

    tree.setDropMode(DropMode.ON_OR_INSERT);
    f.setSize(300, 400);
    f.setVisible(true);
}

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From source file:Main.java

public Main() {
    setLayout(new GridLayout(1, 3));
    tree = new JTree(getTreeModel());
    tree.setDragEnabled(true);/*from  www . ja  v  a 2 s .c o  m*/
    tree.setPreferredSize(new Dimension(200, 400));
    JScrollPane scroll = new JScrollPane();
    scroll.setViewportView(tree);

    treeModel = getTreeModel();
    JTree secondTree = new JTree(treeModel);
    secondTree.setPreferredSize(new Dimension(200, 400));
    secondTree.setTransferHandler(new TransferHandler() {
        @Override
        public boolean importData(TransferSupport support) {
            if (!canImport(support)) {
                return false;
            }
            JTree.DropLocation dl = (JTree.DropLocation) support.getDropLocation();
            TreePath path = dl.getPath();
            int childIndex = dl.getChildIndex();

            String data;
            try {
                data = (String) support.getTransferable().getTransferData(DataFlavor.stringFlavor);
            } catch (Exception e) {
                return false;
            }
            if (childIndex == -1) {
                childIndex = tree.getModel().getChildCount(path.getLastPathComponent());
            }

            DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(data);
            DefaultMutableTreeNode parentNode = (DefaultMutableTreeNode) path.getLastPathComponent();
            treeModel.insertNodeInto(newNode, parentNode, childIndex);

            tree.makeVisible(path.pathByAddingChild(newNode));
            tree.scrollRectToVisible(tree.getPathBounds(path.pathByAddingChild(newNode)));
            return true;
        }

        public boolean canImport(TransferSupport support) {
            if (!support.isDrop()) {
                return false;
            }
            support.setShowDropLocation(true);
            if (!support.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                System.out.println("only string is supported");
                return false;
            }
            JTree.DropLocation dl = (JTree.DropLocation) support.getDropLocation();
            TreePath path = dl.getPath();
            if (path == null) {
                return false;
            }
            return true;
        }
    });
    JScrollPane secondScroll = new JScrollPane();
    secondScroll.setViewportView(secondTree);

    JPanel topPanel = new JPanel(new BorderLayout());
    topPanel.add(scroll, BorderLayout.CENTER);
    JPanel btmPanel = new JPanel(new BorderLayout());
    btmPanel.add(secondScroll, BorderLayout.CENTER);

    add(topPanel);
    add(btmPanel);
}

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From source file:com.haulmont.cuba.desktop.gui.components.DesktopFilterDragAndDropSupport.java

public void initDragAndDrop(Tree tree, ConditionsTree conditions) {
    JTree dTree = (JTree) DesktopComponentsHelper.unwrap(tree);
    dTree.setDragEnabled(true);/* w  w  w  .  jav  a 2 s  .co m*/
    dTree.setDropMode(DropMode.ON_OR_INSERT);
    dTree.setTransferHandler(new TreeTransferHandler(tree, conditions));
}

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From source file:org.apache.jmeter.gui.MainFrame.java

/**
 * Create and initialize the GUI representation of the test tree.
 *
 * @param treeModel/*w  ww. ja  va  2s. co  m*/
 *            the test tree model
 * @param treeListener
 *            the test tree listener
 *
 * @return the initialized test tree GUI
 */
private JTree makeTree(TreeModel treeModel, JMeterTreeListener treeListener) {
    JTree treevar = new JTree(treeModel) {
        private static final long serialVersionUID = 240L;

        @Override
        public String getToolTipText(MouseEvent event) {
            TreePath path = this.getPathForLocation(event.getX(), event.getY());
            if (path != null) {
                Object treeNode = path.getLastPathComponent();
                if (treeNode instanceof DefaultMutableTreeNode) {
                    Object testElement = ((DefaultMutableTreeNode) treeNode).getUserObject();
                    if (testElement instanceof TestElement) {
                        String comment = ((TestElement) testElement).getComment();
                        if (comment != null && comment.length() > 0) {
                            return comment;
                        }
                    }
                }
            }
            return null;
        }
    };
    treevar.setToolTipText("");
    treevar.setCellRenderer(getCellRenderer());
    treevar.setRootVisible(false);
    treevar.setShowsRootHandles(true);

    treeListener.setJTree(treevar);
    treevar.addTreeSelectionListener(treeListener);
    treevar.addMouseListener(treeListener);
    treevar.addKeyListener(treeListener);

    // enable drag&drop, install a custom transfer handler
    treevar.setDragEnabled(true);
    treevar.setDropMode(DropMode.ON_OR_INSERT);
    treevar.setTransferHandler(new JMeterTreeTransferHandler());

    addQuickComponentHotkeys(treevar);

    return treevar;
}

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From source file:org.nuclos.client.ui.collect.searcheditor.SearchEditorController.java

/**
 * enables drag&drop, copy&paste
 * @param tree/*from   w w w .j a  va 2s.  com*/
 */
private void setupDataTransfer(final JTree tree) {
    tree.setDragEnabled(true);
    tree.setTransferHandler(this.transferhandler);
}

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