public class BasicTreeUI.TreeTraverseAction extends AbstractAction
TreeTraverseAction是用于左/右键的动作。 
       将切换节点的扩展,以及潜在地增加选择。 
      | Modifier and Type | Field and Description | 
|---|---|
| protected int | direction
              确定要移动的方向,1表示展开,-1表示折叠。 
             | 
changeSupport, enabledACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON| Constructor and Description | 
|---|
| TreeTraverseAction(int direction, String name) | 
| Modifier and Type | Method and Description | 
|---|---|
| void | actionPerformed(ActionEvent e)
              发生动作时调用。 
             | 
| boolean | isEnabled()
              如果启用该操作,则返回true。 
             | 
addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, putValue, removePropertyChangeListener, setEnabledpublic TreeTraverseAction(int direction,
                          String name) public void actionPerformed(ActionEvent e)
ActionListener复制 
          public boolean isEnabled()
AbstractAction 
          isEnabled在接口 
            Action 
           isEnabled在类 
            AbstractAction 
           Action.isEnabled() 
            Submit a bug or feature 
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