Ejemplo n.º 1
0
 public static List<TreePath> collectExpandedPaths(final JTree tree, TreePath path) {
   final ArrayList<TreePath> result = new ArrayList<TreePath>();
   if (!tree.isExpanded(path)) return result;
   final Object lastPathComponent = path.getLastPathComponent();
   final TreeModel model = tree.getModel();
   if (model.isLeaf(lastPathComponent)) {
     result.add(path);
   } else {
     boolean pathWasAdded = false;
     for (int i = model.getChildCount(lastPathComponent) - 1; i >= 0; i--) {
       final TreePath childPath = path.pathByAddingChild(model.getChild(lastPathComponent, i));
       if (model.isLeaf(lastPathComponent)) {
         if (!pathWasAdded) {
           result.add(path);
           pathWasAdded = true;
         }
       } else if (tree.isExpanded(childPath)) {
         result.addAll(collectExpandedPaths(tree, childPath));
       } else {
         if (!pathWasAdded) {
           result.add(path);
           pathWasAdded = true;
         }
       }
     }
   }
   return result;
 }
Ejemplo n.º 2
0
  private static boolean collectExpandedPathsImpl(
      final JTree tree, final Collection<TreePath> paths, final TreePath path) {
    final TreeModel model = tree.getModel();
    final Object lastPathComponent = path.getLastPathComponent();
    if (model.isLeaf(lastPathComponent)) {
      return false;
    }

    boolean hasExpandedChildren = false;

    for (int i = model.getChildCount(lastPathComponent) - 1; i >= 0; i--) {
      hasExpandedChildren |=
          collectExpandedPathsImpl(
              tree, paths, path.pathByAddingChild(model.getChild(lastPathComponent, i)));
    }

    if (!hasExpandedChildren) {
      paths.add(path);
      return true;
    } else {
      return false;
    }
  }
Ejemplo n.º 3
0
  @Nullable
  public static Range<Integer> getExpandControlRange(final JTree aTree, final TreePath path) {
    TreeModel treeModel = aTree.getModel();

    final BasicTreeUI basicTreeUI = (BasicTreeUI) aTree.getUI();
    Icon expandedIcon = basicTreeUI.getExpandedIcon();

    Range<Integer> box = null;
    if (path != null && !treeModel.isLeaf(path.getLastPathComponent())) {
      int boxWidth;
      Insets i = aTree.getInsets();

      if (expandedIcon != null) {
        boxWidth = expandedIcon.getIconWidth();
      } else {
        boxWidth = 8;
      }

      int boxLeftX = i != null ? i.left : 0;

      boolean leftToRight = aTree.getComponentOrientation().isLeftToRight();
      int depthOffset = getDepthOffset(aTree);
      int totalChildIndent = basicTreeUI.getLeftChildIndent() + basicTreeUI.getRightChildIndent();

      if (leftToRight) {
        boxLeftX +=
            ((path.getPathCount() + depthOffset - 2) * totalChildIndent
                    + basicTreeUI.getLeftChildIndent())
                - boxWidth / 2;
      }
      int boxRightX = boxLeftX + boxWidth;

      box = new Range<Integer>(boxLeftX, boxRightX);
    }
    return box;
  }