jxtreetable.java

java实现浏览器等本地桌面的功能

    /**
     * Overridden to ensure that private renderer state is kept in sync with the
     * state of the component. Calls the inherited version after performing the
     * necessary synchronization. If you override this method, make sure you call
     * this version from your version of this method.
     */
    public void clearSelection() {
        if (renderer != null) {
            renderer.clearSelection();
        }
        super.clearSelection();
    }

    /**
     * Collapses all nodes in the treetable.
     */
    public void collapseAll() {
        renderer.collapseAll();
    }

    /**
     * Expands all nodes in the treetable.
     */
    public void expandAll() {
        renderer.expandAll();
    }

    /**
     * Collapses the node at the specified path in the treetable.
     *
     * @param path path of the node to collapse
     */
    public void collapsePath(TreePath path) {
        renderer.collapsePath(path);
    }

    /**
     * Expands the the node at the specified path in the treetable.
     *
     * @param path path of the node to expand
     */
    public void expandPath(TreePath path) {
        renderer.expandPath(path);
    }

    /**
     * Collapses the row in the treetable. If the specified row index is
     * not valid, this method will have no effect.
     */
    public void collapseRow(int row) {
        renderer.collapseRow(row);
    }

    /**
     * Expands the specified row in the treetable. If the specified row index is
     * not valid, this method will have no effect.
     */
    public void expandRow(int row) {
        renderer.expandRow(row);
    }

    /**
     * Determines whether or not the root node from the TreeModel is visible.
     *
     * @param visible true, if the root node is visible; false, otherwise
     */
    public void setRootVisible(boolean visible) {
        renderer.setRootVisible(visible);
        repaint();
    }

    /**
     * Returns true if the root node of the tree is displayed.
     *
     * @return true if the root node of the tree is displayed
     */
    public boolean isRootVisible() {
        return renderer.isRootVisible();
    }

    /**
     * Returns true if the value identified by path is currently viewable, which
     * means it is either the root or all of its parents are expanded. Otherwise,
     * this method returns false.
     *
     * @return true, if the value identified by path is currently viewable;
     * false, otherwise
     */
    public boolean isVisible(TreePath path) {
        return renderer.isVisible(path);
    }

    /**
     * Returns true if the node identified by path is currently expanded.
     * Otherwise, this method returns false.
     *
     * @param path path
     * @return true, if the value identified by path is currently expanded;
     * false, otherwise
     */
    public boolean isExpanded(TreePath path) {
        return renderer.isExpanded(path);
    }

    /**
     * Returns true if the node at the specified display row is currently expanded.
     * Otherwise, this method returns false.
     *
     * @param row row
     * @return true, if the node at the specified display row is currently expanded.
     * false, otherwise
     */
    public boolean isExpanded(int row) {
        return renderer.isExpanded(row);
    }

    /**
     * Returns true if the node identified by path is currently collapsed, 
     * this will return false if any of the values in path are currently not 
     * being displayed.   
     *
     * @param path path
     * @return true, if the value identified by path is currently collapsed;
     * false, otherwise
     */
    public boolean isCollapsed(TreePath path) {
        return renderer.isCollapsed(path);
    }

    /**
     * Returns true if the node at the specified display row is collapsed.
     *
     * @param row row
     * @return true, if the node at the specified display row is currently collapsed.
     * false, otherwise
     */
    public boolean isCollapsed(int row) {
        return renderer.isCollapsed(row);
    }

    
    /**
     * Returns an <code>Enumeration</code> of the descendants of the
     * path <code>parent</code> that
     * are currently expanded. If <code>parent</code> is not currently
     * expanded, this will return <code>null</code>.
     * If you expand/collapse nodes while
     * iterating over the returned <code>Enumeration</code>
     * this may not return all
     * the expanded paths, or may return paths that are no longer expanded.
     *
     * @param parent  the path which is to be examined
     * @return an <code>Enumeration</code> of the descendents of 
     *		<code>parent</code>, or <code>null</code> if
     *		<code>parent</code> is not currently expanded
     */
    
    public Enumeration getExpandedDescendants(TreePath parent) {
    	return renderer.getExpandedDescendants(parent);
    }

    
    /**
     * Sets the value of the <code>expandsSelectedPaths</code> property for the tree
     * part. This property specifies whether the selected paths should be expanded.
     *
     * @param expand true, if selected paths should be expanded; false, otherwise
     */
    public void setExpandsSelectedPaths(boolean expand) {
        renderer.setExpandsSelectedPaths(expand);
    }

    /**
     * Returns the value of the <code>expandsSelectedPaths</code> property.
     *
     * @return the value of the <code>expandsSelectedPaths</code> property
     */
    public boolean getExpandsSelectedPaths() {
        return renderer.getExpandsSelectedPaths();
    }

    /**
     * Returns the TreePath for a given x,y location.
     *
     * @param x x value
     * @param y y value
     *
     * @return the <code>TreePath</code> for the givern location.
     */
     public TreePath getPathForLocation(int x, int y) {
        int row = rowAtPoint(new Point(x,y));
        if (row == -1) {
          return null;  
        }
        return renderer.getPathForRow(row);
     }

    /**
     * Returns the TreePath for a given row.
     *
     * @param row
     *
     * @return the <code>TreePath</code> for the given row.
     */
     public TreePath getPathForRow(int row) {
        return renderer.getPathForRow(row);
     }

     /**
      * Returns the row for a given TreePath.
      *
      * @param path
      * @return the row for the given <code>TreePath</code>.
      */
     public int getRowForPath(TreePath path) {
       return renderer.getRowForPath(path);
     }

    /**
     * Sets the value of the <code>scrollsOnExpand</code> property for the tree
     * part. This property specifies whether the expanded paths should be scrolled
     * into view. In a look and feel in which a tree might not need to scroll
     * when expanded, this property may be ignored.
     *
     * @param scroll true, if expanded paths should be scrolled into view;
     * false, otherwise
     */
    public void setScrollsOnExpand(boolean scroll) {
        renderer.setScrollsOnExpand(scroll);
    }

    /**
     * Returns the value of the <code>scrollsOnExpand</code> property.
     *
     * @return the value of the <code>scrollsOnExpand</code> property
     */
    public boolean getScrollsOnExpand() {
        return renderer.getScrollsOnExpand();
    }

    /**
     * Sets the value of the <code>showsRootHandles</code> property for the tree
     * part. This property specifies whether the node handles should be displayed.
     * If handles are not supported by a particular look and feel, this property
     * may be ignored.
     *
     * @param visible true, if root handles should be shown; false, otherwise
     */
    public void setShowsRootHandles(boolean visible) {
        renderer.setShowsRootHandles(visible);
        repaint();
    }

    /**
     * Returns the value of the <code>showsRootHandles</code> property.
     *
     * @return the value of the <code>showsRootHandles</code> property
     */
    public boolean getShowsRootHandles() {
        return renderer.getShowsRootHandles();
    }

    /**
     * Adds a listener for <code>TreeExpansion</code> events.
     * 
     * TODO (JW): redirect event source to this. 
     * 
     * @param tel a TreeExpansionListener that will be notified 
     * when a tree node is expanded or collapsed
     */
    public void addTreeExpansionListener(TreeExpansionListener tel) {
        renderer.addTreeExpansionListener(tel);
    }

    /**
     * Removes a listener for <code>TreeExpansion</code> events.
     * @param tel the <code>TreeExpansionListener</code> to remove
     */
    public void removeTreeExpansionListener(TreeExpansionListener tel) {
        renderer.removeTreeExpansionListener(tel);
    }

    /**
     * Adds a listener for <code>TreeSelection</code> events.
     * TODO (JW): redirect event source to this. 
     * 
     * @param tsl a TreeSelectionListener that will be notified 
     * when a tree node is selected or deselected
     */
    public void addTreeSelectionListener(TreeSelectionListener tsl) {
        renderer.addTreeSelectionListener(tsl);
    }

    /**
     * Removes a listener for <code>TreeSelection</code> events.
     * @param tsl the <code>TreeSelectionListener</code> to remove
     */
    public void removeTreeSelectionListener(TreeSelectionListener tsl) {
        renderer.removeTreeSelectionListener(tsl);
    }

    /**
     * Adds a listener for <code>TreeWillExpand</code> events.
     * TODO (JW): redirect event source to this. 
     * 
     * @param tel a TreeWillExpandListener that will be notified 
     * when a tree node will be expanded or collapsed 
     */
    public void addTreeWillExpandListener(TreeWillExpandListener tel) {
        renderer.addTreeWillExpandListener(tel);
    }

    /**
     * Removes a listener for <code>TreeWillExpand</code> events.
     * @param tel the <code>TreeWillExpandListener</code> to remove
     */
    public void removeTreeWillExpandListener(TreeWillExpandListener tel) {
        renderer.removeTreeWillExpandListener(tel);
     }
 
    
    /**
     * Returns the selection model for the tree portion of the this treetable.
     *
     * @return selection model for the tree portion of the this treetable
     */
    public TreeSelectionModel getTreeSelectionModel() {
        return renderer.getSelectionModel();    // RG: Fix JDNC issue 41
    }

    /**
     * Overriden to invoke supers implementation, and then,
     * if the receiver is editing a Tree column, the editors bounds is
     * reset. The reason we have to do this is because JTable doesn't