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| public class TreeCellRendererDemo {
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> new TreeCellRendererDemo());
}
public TreeCellRendererDemo() {
JFrame frame = new JFrame("Démo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new JScrollPane(createTree()));
frame.setSize(300, 300);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private Component createTree() {
JTree tree = new JTree(createTreeNode(FileSystemView
.getFileSystemView().getDefaultDirectory().toPath()));
tree.setRootVisible(false);
tree.setShowsRootHandles(true);
tree.setCellRenderer(new PathNodeTreeCellRenderer());
PathNodeCellEditor editor = new PathNodeCellEditor();
tree.setCellEditor(editor);
editor.addCellEditorListener(new CellEditorListener() {
@Override
public void editingStopped(ChangeEvent e) {
// ******************************************************************************* POUR VOIR CHANGEMENT POLICE SI UN DES FILS EST SELECTIONNE
tree.repaint();
// ******************************************************************************* POUR VOIR CHANGEMENT POLICE SI UN DES FILS EST SELECTIONNE
}
@Override
public void editingCanceled(ChangeEvent e) {
}
});
tree.setEditable(true);
return tree;
}
private PathNode createTreeNode(Path parent) {
boolean isDirectory = Files.isDirectory(parent);
PathNode parentNode = new PathNode(parent, isDirectory);
if (isDirectory) {
Set<Path> paths = new TreeSet<>((p1, p2) -> {
boolean d1 = Files.isDirectory(p1);
boolean d2 = Files.isDirectory(p2);
if ((d1 && d2) || (!d1 && !d2)) {
return p1.toString().compareTo(p2.toString());
} else if (d1) {
return -1;
} else {
return 1;
}
});
try (DirectoryStream<Path> ds = Files.newDirectoryStream(parent)) {
for (Path child : ds) {
paths.add(child);
}
for (Path path : paths) {
parentNode.add(createTreeNode(path));
}
} catch (IOException e) {
// throw new RuntimeException(e);
}
}
return parentNode;
}
private static class PathNode extends DefaultMutableTreeNode {
private static final long serialVersionUID = 1L;
private Path path;
private boolean directory;
private boolean checked;
public PathNode(Path path, boolean directory) {
setUserObject(path);
this.directory = directory;
}
public boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
public String getName() {
return path.getFileName().toString();
}
public boolean isDirectory() {
return directory;
}
@Override
public void setUserObject(Object userObject) {
Objects.requireNonNull(userObject);
this.path = (Path) userObject;
super.setUserObject(userObject);
}
/*public Path getPathObject() {
return path;
}*/
public boolean isChecked(boolean deep) {
if ( deep ) {
boolean checked = false;
for(int i=0; i<getChildCount(); i++) {
PathNode child = (PathNode) getChildAt(i);
if ( child.isChecked() ) {
checked = true;
break;
}
if ( child.isChecked(true) ) {
checked = true;
break;
}
}
return checked;
}
else {
return isChecked();
}
}
}
private static class PathTreeCellRenderer extends DefaultTreeCellRenderer {
private static final long serialVersionUID = 1L;
@Override
public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean selected, boolean expanded, boolean leaf, int row,
boolean hasFocus) {
PathNode node = (PathNode) value;
if (node.isDirectory()) {
leaf = false;
}
Component component = super.getTreeCellRendererComponent(tree,
value, selected, expanded, leaf, row, hasFocus);
setText(node.getName());
// ******************************************************************************* CHANGEMENT POLICE SI UN DES FILS EST SELECTIONNE
if ( node.isChecked(true) ) {
setFont(tree.getFont().deriveFont(Font.BOLD));
}
else {
setFont(null);
}
// ******************************************************************************* CHANGEMENT POLICE SI UN DES FILS EST SELECTIONNE
component.revalidate();
return component;
}
}
private static class PathNodeTreeCellRenderer extends PathTreeCellRenderer {
private static final long serialVersionUID = 1L;
private JCheckBox checkBox = new JCheckBox();
private JPanel panel;
private int workAroundWidth;
private int workAroundHeight;
PathNodeTreeCellRenderer() {
panel = new JPanel() {
@Override
public void reshape(int x, int y, int w, int h) {
w=workAroundWidth;
h=workAroundHeight;
super.reshape(x, y, w, h);
}
};
panel.setLayout(new FlowLayout(FlowLayout.LEADING, 0, 0));
panel.setOpaque(false);
checkBox.setOpaque(false);
panel.add(checkBox);
panel.add(this);
panel.revalidate();
}
@Override
public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean selected, boolean expanded, boolean leaf, int row,
boolean hasFocus) {
PathNode node = (PathNode) value;
checkBox.setSelected(node.isChecked());
Component comp = super.getTreeCellRendererComponent(tree,
value, selected, expanded, leaf, row, hasFocus);
panel.revalidate();
Dimension dim = panel.getPreferredSize();
workAroundWidth=dim.width;
workAroundHeight=dim.height;
return panel;
}
}
private static class PathNodeCellEditor extends DefaultCellEditor {
private static final long serialVersionUID = 1L;
private PathNode node;
private PathTreeCellRenderer cellRenderer = new PathTreeCellRenderer();
private JPanel panel = new JPanel();
public PathNodeCellEditor() {
super(new JCheckBox());
panel.setLayout(new FlowLayout(FlowLayout.LEADING, 0, 0));
panel.setOpaque(false);
JCheckBox checkBox = (JCheckBox) (super.getComponent());
checkBox.setOpaque(false);
panel.add(checkBox);
panel.add(cellRenderer);
panel.revalidate();
}
public Component getTreeCellEditorComponent(JTree tree,
Object value, boolean selected, boolean expanded,
boolean leaf, int row) {
JCheckBox editor = null;
node = (PathNode) value;
if (node != null) {
editor = (JCheckBox) (super.getComponent());
editor.setSelected(node.isChecked());
}
cellRenderer.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, true);
panel.revalidate();
return panel;
}
public Object getCellEditorValue() {
JCheckBox editor = (JCheckBox) (super.getComponent());
node.setChecked(editor.isSelected());
return node.getUserObject();
}
}
} |
JTree : modifier le font du label du node parent
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