--- /dev/null
+
+package be.nikiroo.utils.ui;
+
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.awt.FlowLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.ComponentAdapter;
+import java.awt.event.ComponentEvent;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.swing.AbstractAction;
+import javax.swing.BoxLayout;
+import javax.swing.JPanel;
+import javax.swing.JPopupMenu;
+import javax.swing.JToggleButton;
+import javax.swing.SwingWorker;
+import javax.swing.event.PopupMenuEvent;
+import javax.swing.event.PopupMenuListener;
+
+public class BreadCrumbsBar<T> extends ListenerPanel {
+ private class BreadCrumb extends JPanel {
+ private JToggleButton button;
+ private JToggleButton down;
+
+ public BreadCrumb(final DataNode<T> node) {
+ this.setLayout(new BorderLayout());
+
+ if (!node.isRoot()) {
+ button = new JToggleButton(node.toString());
+ button.addActionListener(new ActionListener() {
+ @Override
+ public void actionPerformed(ActionEvent e) {
+ button.setSelected(false);
+ if (!node.isRoot()) {
+ // TODO: allow clicking on root? option?
+ setSelectedNode(node);
+ }
+ }
+ });
+
+ this.add(button, BorderLayout.CENTER);
+ }
+
+ if (!node.getChildren().isEmpty()) {
+ // TODO (see things with icons included in viewer)
+ down = new JToggleButton(">");
+ final JPopupMenu popup = new JPopupMenu();
+
+ for (final DataNode<T> child : node.getChildren()) {
+ popup.add(new AbstractAction(child.toString()) {
+ private static final long serialVersionUID = 1L;
+
+ @Override
+ public void actionPerformed(ActionEvent e) {
+ setSelectedNode(child);
+ }
+ });
+ }
+
+ down.addActionListener(new ActionListener() {
+ @Override
+ public void actionPerformed(ActionEvent ev) {
+ if (down.isSelected()) {
+ popup.show(down, 0, down.getBounds().height);
+ } else {
+ popup.setVisible(false);
+ }
+ }
+ });
+
+ popup.addPopupMenuListener(new PopupMenuListener() {
+ @Override
+ public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
+ }
+
+ @Override
+ public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
+ down.setSelected(false);
+ }
+
+ @Override
+ public void popupMenuCanceled(PopupMenuEvent e) {
+ }
+ });
+
+ this.add(down, BorderLayout.EAST);
+ }
+ }
+ }
+
+ static public final String CHANGE_ACTION = "change";
+
+ private boolean vertical;
+ private DataNode<T> node;
+ private List<BreadCrumb> crumbs = new ArrayList<BreadCrumb>();
+
+ public BreadCrumbsBar(final DataTree<T> tree) {
+ vertical = true; // to force an update
+ setVertical(false);
+
+ addComponentListener(new ComponentAdapter() {
+ @Override
+ public void componentResized(ComponentEvent e) {
+ super.componentResized(e);
+ synchronized (crumbs) {
+ for (BreadCrumb crumb : crumbs) {
+ setCrumbSize(crumb);
+ }
+ }
+ }
+ });
+
+ new SwingWorker<DataNode<T>, Void>() {
+ @Override
+ protected DataNode<T> doInBackground() throws Exception {
+ tree.loadData();
+ return tree.getRoot();
+ }
+
+ @Override
+ protected void done() {
+ try {
+ node = get();
+ addCrumb(node);
+
+ // TODO: option?
+ if (node.size() > 0) {
+ setSelectedNode(node.getChildren().get(0));
+ } else {
+ revalidate();
+ repaint();
+ }
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ }.execute();
+ }
+
+ public void setVertical(boolean vertical) {
+ if (vertical != this.vertical) {
+ synchronized (crumbs) {
+ this.vertical = vertical;
+
+ for (BreadCrumb crumb : crumbs) {
+ this.remove(crumb);
+ }
+
+ if (vertical) {
+ this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
+ } else {
+ this.setLayout(new WrapLayout(WrapLayout.LEADING));
+ }
+
+ for (BreadCrumb crumb : crumbs) {
+ this.add(crumb);
+ setCrumbSize(crumb);
+ }
+ }
+
+ this.revalidate();
+ this.repaint();
+ }
+ }
+
+ public DataNode<T> getSelectedNode() {
+ return node;
+ }
+
+ public void setSelectedNode(DataNode<T> node) {
+ if (this.node == node) {
+ return;
+ }
+
+ synchronized (crumbs) {
+ // clear until common ancestor (can clear all!)
+ while (this.node != null && !this.node.isParentOf(node)) {
+ this.node = this.node.getParent();
+ this.remove(crumbs.remove(crumbs.size() - 1));
+ }
+
+ // switch root if needed and possible
+ if (this.node == null && node != null) {
+ this.node = node.getRoot();
+ addCrumb(this.node);
+ }
+
+ // re-create until node
+ while (node != null && this.node != node) {
+ DataNode<T> ancestorOrNode = node;
+ for (DataNode<T> child : this.node.getChildren()) {
+ if (child.isParentOf(node))
+ ancestorOrNode = child;
+ }
+
+ this.node = ancestorOrNode;
+ addCrumb(this.node);
+ }
+ }
+
+ this.revalidate();
+ this.repaint();
+
+ fireActionPerformed(CHANGE_ACTION);
+ }
+
+ private void addCrumb(DataNode<T> node) {
+ BreadCrumb crumb = new BreadCrumb(node);
+ this.crumbs.add(crumb);
+ setCrumbSize(crumb);
+ this.add(crumb);
+ }
+
+ private void setCrumbSize(BreadCrumb crumb) {
+ if (vertical) {
+ crumb.setMaximumSize(new Dimension(this.getWidth(),
+ crumb.getMinimumSize().height));
+ } else {
+ crumb.setMaximumSize(null);
+ }
+ }
+}
git://git.nikiroo.be / fanfix.git / blobdiff