+ private static final int VERTICAL_MENUS_COUNT = 7;
+ private static final Dimension CONTENT_PANEL_SIZE = new Dimension(1024, 900);
+ private final InstantLauncher instantLauncher;
+ private final ArrayList<Menu> menus = new ArrayList<>();
+
+ private final ArrayList<JPanel> panels = new ArrayList<>();
+ private JPanel contentPane;
+
+ public MultiLevelMenu(final InstantLauncher instantLauncher) {
+ this.instantLauncher = instantLauncher;
+ }
+
+ /**
+ * Adds new vertical menu.
+ *
+ * @return <code>true</code> if operation succeeded, or <code>false</code>
+ * if there was not enough space left for a new menu.
+ */
+ private boolean addMenu(final File directory) {
+ final int newMenuHorizontalIndex = menus.size();
+
+ if (newMenuHorizontalIndex >= VERTICAL_MENUS_COUNT) {
+ return false;
+ }
+
+ final Menu menu = new Menu(directory);
+ menu.addMenuListener(this);
+
+ final JPanel placeholderPanel = panels.get(newMenuHorizontalIndex);
+ final JPanel menuPanel = menu.getMenuPanel();
+ placeholderPanel.add(menuPanel, BorderLayout.CENTER);
+
+ menus.add(menu);
+ return true;
+ }
+
+ public JPanel buildContentPanel() {
+
+ contentPane = new JPanel();
+ contentPane.setBackground(Color.BLACK);
+ contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.X_AXIS));
+ Utils.setComponentSize(contentPane, CONTENT_PANEL_SIZE);
+
+ // initialize panels
+ for (int i = 0; i < VERTICAL_MENUS_COUNT; i++) {
+ contentPane.add(Box.createHorizontalStrut(10));
+
+ final JPanel panel = new JPanel(new BorderLayout());
+ panel.setBackground(Color.BLACK);
+
+ Utils.setComponentSize(panel, Menu.SIZE_MENU_PANEL);
+
+ panels.add(panel);
+ contentPane.add(panel);
+ }
+
+ final File directory = instantLauncher.configurationManager.getConfiguration().getNavigationRootDirectory();
+ addMenu(directory);
+
+ return contentPane;
+ }
+
+ private int getMenuIndex(final Menu menu) {
+ int i = 0;
+ for (final Menu m : menus) {
+ if (m == menu) {
+ return i;
+ }
+ i++;
+ }
+ return -1;
+ }
+
+ @Override
+ public void menuItemHighlighted(final Menu menu, final File chosenFile) {
+
+ if (chosenFile.isDirectory()) {
+ final int menuIndex = getMenuIndex(menu);
+
+ if (menuIndex >= 0) {
+ removeMenus(menuIndex + 1);
+ if (addMenu(chosenFile)) {
+ contentPane.validate();
+ contentPane.repaint();
+ }
+ }
+ }
+
+ }
+
+ @Override
+ public void menuItemSelected(final File chosenFile) {
+ if (chosenFile.isFile()) {
+ if (chosenFile.canExecute()) {
+ executeCommand(chosenFile.getAbsolutePath());
+ } else {
+ boolean fileOpened;
+ try {
+ fileOpened = instantLauncher.openFile(chosenFile.getCanonicalFile());
+ if (fileOpened)
+ InstantLauncher.exitProgram();
+
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+ }
+
+ if (chosenFile.isDirectory()) {
+ try {
+ instantLauncher.openDirectory(chosenFile.getCanonicalFile());
+ InstantLauncher.exitProgram();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+ }
+
+ @Override
+ public void menuItemSelectedAlternative(final File chosenFile) {
+ if (chosenFile.isFile())
+ chosenFile.setExecutable(!chosenFile.canExecute());
+ else {
+ instantLauncher.openDirectoryInTerminal(chosenFile);
+ InstantLauncher.exitProgram();
+ }
+ }
+
+ private void removeMenus(final int fromIndex) {
+
+ for (int i = fromIndex; i < menus.size(); i++) {
+ final JPanel jPanel = panels.get(i);
+ jPanel.removeAll();
+ }
+
+ while (menus.size() > fromIndex) {
+ menus.remove(fromIndex);
+ }
+ }
+
+ @Override
+ public void menuItemSelectedAlternative2(File chosenFile) {
+ // TODO: define some middle mouse click functions
+ }