jtree.java

linux下建立JAVA虚拟机的源码KAFFE

       * 
       * @return the font for the current node
       */
      public Font getFont()
      {
        return tree.getFont();
      }
      
      /**
       * Gets the FontMetrics of this object.
       * 
       * @param f - the current font.
       * @return the font metrics for the given font.
       */
      public FontMetrics getFontMetrics(Font f)
      {
        return tree.getFontMetrics(f);
      }
      
      /**
       * Get the foreground color of this object.
       * 
       * @return the foreground for this object.
       */
      public Color getForeground()
      {
        return tree.getForeground();
      }
      
      /**
       * Gets the locale of the component.
       * 
       * @return the locale of the component.
       */
      public Locale getLocale()
      {
        return tree.getLocale();
      }
      
      /**
       * Gets the location of the object relative to the 
       * parent in the form of a point specifying the object's 
       * top-left corner in the screen's coordinate space. 
       * 
       * @return the location of the current node.
       */
      public Point getLocation()
      {
        return getLocationInJTree();
      }
      
      /**
       * Returns the location in the tree.
       * 
       * @return the location in the JTree.
       */
      protected Point getLocationInJTree()
      {
        Rectangle bounds = tree.getPathBounds(tp);
        return new Point(bounds.x, bounds.y);
      }
      
      /**
       * Returns the location of the object on the screen.
       * 
       * @return the location of the object on the screen.
       */
      public Point getLocationOnScreen()
      {
        Point loc = getLocation();
        SwingUtilities.convertPointToScreen(loc, tree);
        return loc;
      }
      
      /**
       * Returns the size of this object in the form of a Dimension object.
       * 
       * @return the size of the object
       */
      public Dimension getSize()
      {
        Rectangle b = getBounds();
        return b.getSize();
      }
      
      /**
       * Returns true if the current child of this object is selected.
       * 
       * @param i - the child of the current node
       * @return true if the child is selected.
       */
      public boolean isAccessibleChildSelected(int i)
      {
        Object child = mod.getChild(tp.getLastPathComponent(), i);
        if (child != null)
          return tree.isPathSelected(tp.pathByAddingChild(child));
        return false;
      }
      
      /**
       * Determines if the object is enabled.
       * 
       * @return true if the tree is enabled
       */
      public boolean isEnabled()
      {
        return tree.isEnabled();
      }
      
      /**
       * Returns whether this object can accept focus or not.
       * 
       * @return true, it is always focus traversable
       */
      public boolean isFocusTraversable()
      {
        return true;
      }
      
      /**
       * Determines if the object is showing.
       * 
       * @return true if the object is visible and the
       * parent is visible.
       */
      public boolean isShowing()
      {
        return isVisible() && tree.isShowing();
      }
      
      /**
       * Determines if the object is visible.
       * 
       * @return true if the object is visible.
       */
      public boolean isVisible()
      {
        return tree.isVisible(tp);
      }
      
      /**
       * Removes the specified selected item in the object from the
       * object's selection.
       * 
       * @param i - the specified item to remove
       */
      public void removeAccessibleSelection(int i)
      {
        if (mod != null)
          {
            Object child = mod.getChild(tp.getLastPathComponent(), i);
            if (child != null)
              {
                if (!states.contains(AccessibleState.MULTISELECTABLE))
                  clearAccessibleSelection();
                if (selectionList.contains(child))
                  {
                    selectionList.remove(child);                  
                    tree.removeSelectionPath(tp.pathByAddingChild(child));
                  }
              }
          }
      }
      
      /**
       * Removes the specified focus listener so it no longer receives focus 
       * events from this component.
       * 
       * @param l - the focus listener to remove
       */
      public void removeFocusListener(FocusListener l)
      {
        tree.removeFocusListener(l);
      }
      
      /**
       * Remove a PropertyChangeListener from the listener list.
       * 
       * @param l - the property change listener to remove.
       */
      public void removePropertyChangeListener(PropertyChangeListener l)
      {
        // Nothing to do here.
      }
      
      /**
       * Requests focus for this object.
       */
      public void requestFocus()
      {
        tree.requestFocus();
      }
      
      /**
       * Causes every selected item in the object to be selected if the object 
       * supports multiple selections.
       */
      public void selectAllAccessibleSelection()
      {
        Object parent = tp.getLastPathComponent();
        if (mod != null)
          {
            for (int i = 0; i < mod.getChildCount(parent); i++)
              {
                Object child = mod.getChild(parent, i);
                if (child != null)
                  {
                    if (!states.contains(AccessibleState.MULTISELECTABLE))
                      clearAccessibleSelection();
                    if (selectionList.contains(child))
                      {
                        selectionList.add(child);
                        tree.addSelectionPath(tp.pathByAddingChild(child));
                      }
                  }
              }
          }
      }
      
      /**
       * Set the accessible description of this object.
       * 
       * @param s - the string to set the accessible description to.
       */
      public void setAccessibleDescription(String s)
      {
        super.setAccessibleDescription(s);
      }
      
      /**
       * Set the localized accessible name of this object.
       * 
       * @param s - the string to set the accessible name to.
       */
      public void setAccessibleName(String s)
      {
        super.setAccessibleName(s);
      }
      
      /**
       * Set the background color of this object.
       * 
       * @param c - the color to set the background to.
       */
      public void setBackground(Color c)
      {
        // Nothing to do here.
      }
      
      /**
       * Sets the bounds of this object in the form of a Rectangle object.
       * 
       * @param r - the bounds to set the object o
       */
      public void setBounds(Rectangle r)
      {
        // Nothing to do here.
      }
      
      /**
       * Sets the Cursor of this object.
       * 
       * @param c - the new cursor
       */
      public void setCursor(Cursor c)
      {
        cursor = c;
      }
      
      /**
       * Sets the enabled state of the object.
       * 
       * @param b - boolean to enable or disable object
       */
      public void setEnabled(boolean b)
      {
         // Nothing to do here.
      }
      
      /**
       * Sets the Font of this object.
       * 
       * @param f - the new font.
       */
      public void setFont(Font f)
      {
         // Nothing to do here.
      }
      
      /**
       * Sets the foreground color of this object.
       * 
       * @param c - the new foreground color.
       */
      public void setForeground(Color c)
      {
        // Nothing to do here.
      }
      
      /**
       * Sets the location of the object relative to the parent.
       * 
       * @param p - the new location for the object.
       */
      public void setLocation(Point p)
      {
        // Nothing to do here.
      }
      
      /**
       * Resizes this object so that it has width and height.
       * 
       * @param d - the new size for the object.
       */
      public void setSize(Dimension d)
      {
        // Nothing to do here.
      }
      
      /**
       * Sets the visible state of the object.
       * 
       * @param b - sets the objects visibility.
       */
      public void setVisible(boolean b)
      {
        // Nothing to do here.
      }
    }
    
    /**
     * Constructor
     */
    public AccessibleJTree()
    {
      // Nothing to do here.
    }
    
    /**
     * Adds the specified selected item in the object to the object's selection.
     * 
     * @param i - the row to add to the tree's selection
     */
    public void addAccessibleSelection(int i)
    {
      addSelectionInterval(i, i);
    }
    
    /**
     * Clears the selection in the object, so that nothing in the object is selected.
     */
    public void clearAccessibleSelection()
    {
      clearSelection();
    }
    
    /**
     * Fire a visible data property change notification.
     */
    public void fireVisibleDataPropertyChange()
    {
      treeDidChange();
    }
    
    /**
     * Returns the Accessible child, if one exists, contained at the local 
     * coordinate Point.
     * 
     * @param p - the point of the accessible to get.
     * @return the accessible at point p.
     */
    public Accessible getAccessibleAt(Point p)
    {
      TreePath tp = getClosestPathForLocation(p.x, p.y);
      if (tp != null)
        return new AccessibleJTreeNode(JTree.this, tp, null);
      return null;
    }
    
    /**
     * Return the nth Accessible child of the object.
     * 
     * @param i - the accessible child to get
     * @return the i-th child
     */
    public Accessible getAccessibleChild(int i)
    {
      return null;
    }
    
    /**
     * Returns the number of top-level children nodes of this JTree.
     * 
     * @return the number of top-level children
     */
    public int getAccessibleChildrenCount()
    {
      TreeModel model = getModel();
      if (model != null)
        return model.getChildCount(model.getRoot());
      return 0;
    }
    
    /**
     * Get the index of this object in its accessible parent.
     * 
     * @return the index of this object.
     */
    public int getAccessibleIndexInParent()
    {
      return 0;
    }
    
    /**
     * Get the role of this object.
     * 
     * @return the role of this object
     */
    public AccessibleRole getAccessibleRole()
    {
      return AccessibleRole.TREE;
    }
    
    /**
     * Get the AccessibleSelection associated with this object.
     * 
     * @return the accessible selection of the tree
     */
    public AccessibleSelection getAccessibleSelection()
    {
      TreeModel mod = getModel();
      if (mod != null)
        return (new AccessibleJTreeNode(JTree.this, 
                  new TreePath(mod.getRoot()), null)).getAccessibleSelection();
      return null;
    }
    
    /**
     * Returns an Accessible representing the specified selected item in the object.
     * 
     * @return the i-th accessible in the selection
     */
    public Accessible getAccessibleSelection(int i)
    {
      TreeModel mod = getModel();
      if (mod != null)
        return (new AccessibleJTreeNode(JTree.this, 
                  new TreePath(mod.getRoot()), null)).getAccessibleSelection(i);
      return null;
    }
    
    /**
     * Returns the number of items currently selected.
     * 
     * @return the number of selected accessibles.
     */
    public int getAccessibleSelectionCount()
    {
      return getSelectionCount();
    }
    
    /**
     * Returns true if the current child of this object is selected.
     * 
     * @param i - the child of this object
     * @return true if the i-th child is selected.
     */
    public boolean isAccessibleChildSelected(int i)
    {
      // Nothing to do here.
      return false;
    }
    
    /**
     * Removes the specified selected item in the object from the object's
     * selection.
     * 
     * @param i - the i-th selected item to remove
     */
    public void removeAccessibleSelection(int i)
    {
      removeSelectionInterval(i, i);
    }
    
    /**
     * Causes every selected item in the object to be selected if the object
     * supports multiple selections.
     */
    public void selectAllAccessibleSelection()
    {
      if (getSelectionModel().getSelectionMode() != 
        TreeSelectionModel.SINGLE_TREE_SELECTION)
      addSelectionInterval(0, getVisibleRowCount());
    }
    
    /**
     * Tree Collapsed notification
     * 
     * @param e - the event
     */
    public void treeCollapsed(TreeExpansionEvent e)
    {
      fireTreeCollapsed(e.getPath());
    }
   
    /**
     * Tree Model Expansion notification.
     * 
     * @param e - the event
     */
    public void treeExpanded(TreeExpansionEvent e)
    {
      fireTreeExpanded(e.getPath());
    }
    
    /**
     * Tree Model Node change notification.
     * 
     * @param e - the event
     */
    public void treeNodesChanged(TreeModelEvent e)
    {