List of usage examples for javax.swing JTree addTreeWillExpandListener
public void addTreeWillExpandListener(TreeWillExpandListener tel)
TreeWillExpand events. From source file:Main.java
public static void main(String[] args) throws Exception { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); MyTreeNode root = new MyTreeNode(1, 0); DefaultTreeModel model = new DefaultTreeModel(root); JProgressBar bar = new JProgressBar(); PropertyChangeListener progressListener = new PropertyChangeListener() { @Override//w w w . jav a2s . co m public void propertyChange(PropertyChangeEvent evt) { bar.setValue((Integer) evt.getNewValue()); } }; JTree tree = new JTree(); tree.setShowsRootHandles(true); tree.addTreeWillExpandListener(new TreeWillExpandListener() { @Override public void treeWillExpand(TreeExpansionEvent event) throws ExpandVetoException { TreePath path = event.getPath(); if (path.getLastPathComponent() instanceof MyTreeNode) { MyTreeNode node = (MyTreeNode) path.getLastPathComponent(); node.loadChildren(model, progressListener); } } @Override public void treeWillCollapse(TreeExpansionEvent event) throws ExpandVetoException { } }); tree.setModel(model); root.loadChildren(model, progressListener); frame.add(new JScrollPane(tree)); frame.add(bar, BorderLayout.SOUTH); frame.pack(); frame.setVisible(true); }
From source file:Main.java
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); }/*w w w .ja va 2 s . c om*/ 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); }
From source file:TreeExpandSample.java
public static void main(String args[]) { String title = ("JTree Expand Sample"); JFrame frame = new JFrame(title); JTree tree = new JTree(); 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(); if (data.equals("colors")) { throw new ExpandVetoException(treeExpansionEvent); }//from ww w . j av a 2s . c o m } public void treeWillExpand(TreeExpansionEvent treeExpansionEvent) throws ExpandVetoException { TreePath path = treeExpansionEvent.getPath(); DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent(); String data = node.getUserObject().toString(); if (data.equals("sports")) { throw new ExpandVetoException(treeExpansionEvent); } } }; tree.addTreeWillExpandListener(treeWillExpandListener); JScrollPane scrollPane = new JScrollPane(tree); frame.getContentPane().add(scrollPane, BorderLayout.CENTER); frame.setSize(300, 150); frame.setVisible(true); }
From source file:Main.java
public static void main() { JTree tree = new JTree(); tree.addTreeWillExpandListener(new MyTreeWillExpandListener()); tree.addTreeExpansionListener(new MyTreeExpansionListener()); JFrame f = new JFrame(); f.add(new JScrollPane(tree)); f.setSize(300, 300);//w ww . ja v a2 s.com f.setVisible(true); }
From source file:gov.sandia.umf.platform.ui.jobs.RunPanel.java
public RunPanel() { root = new NodeBase(); model = new DefaultTreeModel(root); tree = new JTree(model); tree.setRootVisible(false);/*w w w . j a v a 2 s. com*/ tree.setShowsRootHandles(true); tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION); tree.setCellRenderer(new DefaultTreeCellRenderer() { @Override public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) { super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus); NodeBase node = (NodeBase) value; Icon icon = node.getIcon(expanded); // A node knows whether it should hold other nodes or not, so don't pass leaf to it. if (icon == null) { if (leaf) icon = getDefaultLeafIcon(); else if (expanded) icon = getDefaultOpenIcon(); else icon = getDefaultClosedIcon(); } setIcon(icon); return this; } }); tree.addTreeSelectionListener(new TreeSelectionListener() { public void valueChanged(TreeSelectionEvent e) { NodeBase newNode = (NodeBase) tree.getLastSelectedPathComponent(); if (newNode == null) return; if (newNode == displayNode) return; if (displayThread != null) synchronized (displayText) { displayThread.stop = true; } displayNode = newNode; if (displayNode instanceof NodeFile) viewFile(); else if (displayNode instanceof NodeJob) viewJob(); } }); tree.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent e) { int keycode = e.getKeyCode(); if (keycode == KeyEvent.VK_DELETE || keycode == KeyEvent.VK_BACK_SPACE) { delete(); } } }); tree.addTreeWillExpandListener(new TreeWillExpandListener() { public void treeWillExpand(TreeExpansionEvent event) throws ExpandVetoException { TreePath path = event.getPath(); // TODO: can this ever be null? Object o = path.getLastPathComponent(); if (o instanceof NodeJob) ((NodeJob) o).build(tree); } public void treeWillCollapse(TreeExpansionEvent event) throws ExpandVetoException { } }); tree.addTreeExpansionListener(new TreeExpansionListener() { public void treeExpanded(TreeExpansionEvent event) { Rectangle node = tree.getPathBounds(event.getPath()); Rectangle visible = treePane.getViewport().getViewRect(); visible.height -= node.y - visible.y; visible.y = node.y; tree.repaint(visible); } public void treeCollapsed(TreeExpansionEvent event) { Rectangle node = tree.getPathBounds(event.getPath()); Rectangle visible = treePane.getViewport().getViewRect(); visible.height -= node.y - visible.y; visible.y = node.y; tree.repaint(visible); } }); Thread refreshThread = new Thread() { public void run() { try { // Initial load synchronized (running) { for (MNode n : AppData.runs) running.add(0, new NodeJob(n)); // This should be efficient on a doubly-linked list. for (NodeJob job : running) root.add(job); } EventQueue.invokeLater(new Runnable() { public void run() { model.nodeStructureChanged(root); if (model.getChildCount(root) > 0) tree.setSelectionRow(0); } }); // Periodic refresh to show status of running jobs int shortCycles = 100; // Force full scan on first cycle. while (true) { NodeBase d = displayNode; // Make local copy (atomic action) to prevent it changing from under us if (d instanceof NodeJob) ((NodeJob) d).monitorProgress(RunPanel.this); if (shortCycles++ < 20) { Thread.sleep(1000); continue; } shortCycles = 0; synchronized (running) { Iterator<NodeJob> i = running.iterator(); while (i.hasNext()) { NodeJob job = i.next(); if (job != d) job.monitorProgress(RunPanel.this); if (job.complete >= 1) i.remove(); } } } } catch (InterruptedException e) { } } }; refreshThread.setDaemon(true); refreshThread.start(); displayText = new JTextArea(); displayText.setEditable(false); final JCheckBox chkFixedWidth = new JCheckBox("Fixed-Width Font"); chkFixedWidth.setFocusable(false); chkFixedWidth.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int size = displayText.getFont().getSize(); if (chkFixedWidth.isSelected()) { displayText.setFont(new Font(Font.MONOSPACED, Font.PLAIN, size)); } else { displayText.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, size)); } } }); displayPane.setViewportView(displayText); ActionListener graphListener = new ActionListener() { public void actionPerformed(ActionEvent e) { if (displayNode instanceof NodeFile) { NodeFile nf = (NodeFile) displayNode; if (nf.type == NodeFile.Type.Output || nf.type == NodeFile.Type.Result) { String graphType = e.getActionCommand(); if (displayPane.getViewport().getView() instanceof ChartPanel && displayGraph.equals(graphType)) { viewFile(); displayGraph = ""; } else { if (graphType.equals("Graph")) { Plot plot = new Plot(nf.path.getAbsolutePath()); if (!plot.columns.isEmpty()) displayPane.setViewportView(plot.createGraphPanel()); } else // Raster { Raster raster = new Raster(nf.path.getAbsolutePath(), displayPane.getHeight()); displayPane.setViewportView(raster.createGraphPanel()); } displayGraph = graphType; } } } } }; buttonGraph = new JButton("Graph", ImageUtil.getImage("analysis.gif")); buttonGraph.setFocusable(false); buttonGraph.addActionListener(graphListener); buttonGraph.setActionCommand("Graph"); buttonRaster = new JButton("Raster", ImageUtil.getImage("prnplot.gif")); buttonRaster.setFocusable(false); buttonRaster.addActionListener(graphListener); buttonRaster.setActionCommand("Raster"); Lay.BLtg(this, "C", Lay.SPL(Lay.BL("C", treePane = Lay.sp(tree)), Lay.BL("N", Lay.FL(chkFixedWidth, Lay.FL(buttonGraph, buttonRaster), "hgap=50"), "C", displayPane), "divpixel=250")); setFocusCycleRoot(true); }