import org.eclipse.che.ide.api.parts.base.BasePresenter; //导入依赖的package包/类
/** {@inheritDoc} */
@Override
public void addPart(@NotNull PartPresenter part, @Nullable Constraints constraint) {
  if (containsPart(part)) {
    TabItem tab = getTabByPart(part);
    onTabClicked(tab);
    return;
  }

  if (part instanceof BasePresenter) {
    ((BasePresenter) part).setPartStack(this);
  }

  part.addPropertyListener(propertyListener);

  PartButton partButton =
      tabItemFactory
          .createPartButton(part.getTitle())
          .setTooltip(part.getTitleToolTip())
          .setIcon(part.getTitleImage());
  partButton.setDelegate(this);

  parts.put(partButton, part);
  constraints.put(part, constraint);

  view.addTab(partButton, part);

  sortPartsOnView();

  onRequestFocus();
}
 

import org.eclipse.che.ide.api.parts.base.BasePresenter; //导入依赖的package包/类
@Override
public void updateStack() {
  for (PartPresenter partPresenter : parts.values()) {
    if (partPresenter instanceof BasePresenter) {
      ((BasePresenter) partPresenter).setPartStack(this);
    }
  }
}