Ejemplo n.º 1
0
 private static int getVisibleRowCount(final JTree tree) {
   final Rectangle visible = tree.getVisibleRect();
   int count = 0;
   for (int i = 0; i < tree.getRowCount(); i++) {
     final Rectangle bounds = tree.getRowBounds(i);
     if (visible.y <= bounds.y && visible.y + visible.height >= bounds.y + bounds.height) {
       count++;
     }
   }
   return count;
 }
Ejemplo n.º 2
0
 private static int getFirstVisibleRow(final JTree tree) {
   final Rectangle visible = tree.getVisibleRect();
   int row = -1;
   for (int i = 0; i < tree.getRowCount(); i++) {
     final Rectangle bounds = tree.getRowBounds(i);
     if (visible.y <= bounds.y && visible.y + visible.height >= bounds.y + bounds.height) {
       row = i;
       break;
     }
   }
   return row;
 }
Ejemplo n.º 3
0
  public static ActionCallback showAndSelect(
      final JTree tree,
      int top,
      int bottom,
      final int row,
      final int previous,
      boolean addToSelection,
      final boolean scroll) {
    final TreePath path = tree.getPathForRow(row);

    if (path == null) return new ActionCallback.Done();

    final int size = tree.getRowCount();
    if (size == 0) {
      tree.clearSelection();
      return new ActionCallback.Done();
    }
    if (top < 0) {
      top = 0;
    }
    if (bottom >= size) {
      bottom = size - 1;
    }

    if (row >= tree.getRowCount()) return new ActionCallback.Done();

    if (!tree.isValid()) {
      tree.validate();
    }

    final Rectangle rowBounds = tree.getRowBounds(row);
    if (rowBounds == null) return new ActionCallback.Done();

    Rectangle topBounds = tree.getRowBounds(top);
    if (topBounds == null) {
      topBounds = rowBounds;
    }

    Rectangle bottomBounds = tree.getRowBounds(bottom);
    if (bottomBounds == null) {
      bottomBounds = rowBounds;
    }

    Rectangle bounds = topBounds.union(bottomBounds);
    bounds.x = rowBounds.x;
    bounds.width = rowBounds.width;

    final Rectangle visible = tree.getVisibleRect();
    if (visible.contains(bounds)) {
      bounds = null;
    } else {
      final Component comp =
          tree.getCellRenderer()
              .getTreeCellRendererComponent(
                  tree, path.getLastPathComponent(), true, true, false, row, false);

      if (comp instanceof SimpleColoredComponent) {
        final SimpleColoredComponent renderer = ((SimpleColoredComponent) comp);
        final Dimension scrollableSize = renderer.computePreferredSize(true);
        bounds.width = scrollableSize.width;
      }
    }

    final ActionCallback callback = new ActionCallback();

    if (!tree.isRowSelected(row)) {
      if (addToSelection) {
        tree.getSelectionModel().addSelectionPath(tree.getPathForRow(row));
      } else {
        tree.setSelectionRow(row);
      }
    }

    if (bounds != null) {
      final Range<Integer> range = getExpandControlRange(tree, path);
      if (range != null) {
        int delta = bounds.x - range.getFrom().intValue();
        bounds.x -= delta;
        bounds.width -= delta;
      }

      if (visible.width < bounds.width) {
        bounds.width = visible.width;
      }

      final Rectangle b1 = bounds;
      final Runnable runnable =
          new Runnable() {
            public void run() {
              if (scroll) {
                tree.scrollRectToVisible(b1);
              }
              callback.setDone();
            }
          };

      if (ApplicationManager.getApplication().isUnitTestMode()) {
        runnable.run();
      } else {
        SwingUtilities.invokeLater(runnable);
      }
    } else {
      callback.setDone();
    }

    return callback;
  }