public ActionsTree()

in idea-plugin/src/main/java/com/jetbrains/ide/streamdeck/keymap/ActionsTree.java [84:172]
80 lines of code
13 McCabe index (conditional complexity)

  public ActionsTree() {
    myRoot = new DefaultMutableTreeNode(ROOT);

    myTree = new Tree(new MyModel(myRoot)) {
      @Override
      public void paint(Graphics g) {
        super.paint(g);
        Rectangle visibleRect = getVisibleRect();
        Insets insets = getInsets();
        if (insets != null && insets.right > 0) {
          visibleRect.width -= JBUIScale.scale(9);
        }
        Rectangle clip = g.getClipBounds();
        for (int row = 0; row < getRowCount(); row++) {
          Rectangle rowBounds = getRowBounds(row);
          rowBounds.x = 0;
          rowBounds.width = Integer.MAX_VALUE;

          if (rowBounds.intersects(clip)) {
            Object node = getPathForRow(row).getLastPathComponent();
            if (node instanceof DefaultMutableTreeNode) {
              Object data = ((DefaultMutableTreeNode)node).getUserObject();
              if (!(data instanceof Hyperlink)) {
                Rectangle fullRowRect = new Rectangle(visibleRect.x, rowBounds.y, visibleRect.width, rowBounds.height);
                paintRowData(this, data, fullRowRect, (Graphics2D)g);
              }
            }
          }
        }
      }

      @Override
      public String convertValueToText(Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
        if (value instanceof DefaultMutableTreeNode) {
          String path = ActionsTree.this.getPath((DefaultMutableTreeNode)value, true);
          return StringUtil.notNullize(path);
        }
        return super.convertValueToText(value, selected, expanded, leaf, row, hasFocus);
      }
    };
    myTree.setRootVisible(false);
    myTree.setShowsRootHandles(true);

    myTree.putClientProperty(WideSelectionTreeUI.STRIPED_CLIENT_PROPERTY, Boolean.TRUE);
    myTree.setCellRenderer(new KeymapsRenderer());
    new TreeLinkMouseListener(new KeymapsRenderer()) {
      @Override
      protected boolean doCacheLastNode() {
        return false;
      }

      @Override
      protected void handleTagClick(@Nullable Object tag, @NotNull MouseEvent event) {
        if (tag instanceof Hyperlink) {
          ((Hyperlink)tag).onClick(event);
        }
        else {
          super.handleTagClick(tag, event);
        }
      }
    }.installOn(myTree);

    myTree.addMouseMotionListener(new MouseMotionAdapter() {
      @Override
      public void mouseMoved(MouseEvent e) {
        String description = getDescription(e);
        ActionMenu.showDescriptionInStatusBar(description != null, myTree, description);
      }

      @Nullable
      @NlsActions.ActionDescription
      private String getDescription(@NotNull MouseEvent e) {
        TreePath path = myTree.getPathForLocation(e.getX(), e.getY());
        DefaultMutableTreeNode node = path == null ? null : (DefaultMutableTreeNode)path.getLastPathComponent();
        Object userObject = node == null ? null : node.getUserObject();
        if (!(userObject instanceof String)) {
          return null;
        }

        AnAction action = ActionManager.getInstance().getActionOrStub((String)userObject);
        return action == null ? null : action.getTemplatePresentation().getDescription();
      }
    });

    myTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
    myComponent = ScrollPaneFactory.createScrollPane(myTree,
                                                     ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
                                                     ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
  }