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javax.swing.tree
public class: VariableHeightLayoutCache [javadoc | source]
java.lang.Object
   javax.swing.tree.AbstractLayoutCache
      javax.swing.tree.VariableHeightLayoutCache

All Implemented Interfaces:
    RowMapper

NOTE: This will become more open in a future release.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeansTM has been added to the java.beans package. Please see java.beans.XMLEncoder .

Fields inherited from javax.swing.tree.AbstractLayoutCache:
nodeDimensions,  treeModel,  treeSelectionModel,  rootVisible,  rowHeight
Constructor:
 public VariableHeightLayoutCache() 
Method from javax.swing.tree.VariableHeightLayoutCache Summary:
getBounds,   getExpandedState,   getPathClosestTo,   getPathForRow,   getPreferredHeight,   getPreferredWidth,   getRowCount,   getRowForPath,   getVisibleChildCount,   getVisiblePathsFrom,   invalidatePathBounds,   invalidateSizes,   isExpanded,   setExpandedState,   setModel,   setNodeDimensions,   setRootVisible,   setRowHeight,   treeNodesChanged,   treeNodesInserted,   treeNodesRemoved,   treeStructureChanged
Methods from javax.swing.tree.AbstractLayoutCache:
getBounds,   getExpandedState,   getModel,   getNodeDimensions,   getNodeDimensions,   getPathClosestTo,   getPathForRow,   getPreferredHeight,   getPreferredWidth,   getRowCount,   getRowForPath,   getRowHeight,   getRowsForPaths,   getSelectionModel,   getVisibleChildCount,   getVisiblePathsFrom,   invalidatePathBounds,   invalidateSizes,   isExpanded,   isFixedRowHeight,   isRootVisible,   setExpandedState,   setModel,   setNodeDimensions,   setRootVisible,   setRowHeight,   setSelectionModel,   treeNodesChanged,   treeNodesInserted,   treeNodesRemoved,   treeStructureChanged
Methods from java.lang.Object:
clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait
Method from javax.swing.tree.VariableHeightLayoutCache Detail:
 public Rectangle getBounds(TreePath path,
    Rectangle placeIn) 
    Returns the Rectangle enclosing the label portion into which the item identified by path will be drawn.
 public boolean getExpandedState(TreePath path) 
    Returns true if the path is expanded, and visible.
 public TreePath getPathClosestTo(int x,
    int y) 
    Returns the path to the node that is closest to x,y. If there is nothing currently visible this will return null, otherwise it will always return a valid path. If you need to test if the returned object is exactly at x, y you should get the bounds for the returned path and test x, y against that.
 public TreePath getPathForRow(int row) 
    Returns the path for row. If row is not visible, null is returned.
 public int getPreferredHeight() 
    Returns the preferred height.
 public int getPreferredWidth(Rectangle bounds) 
    Returns the preferred width and height for the region in visibleRegion.
 public int getRowCount() 
    Returns the number of visible rows.
 public int getRowForPath(TreePath path) 
    Returns the row where the last item identified in path is visible. Will return -1 if any of the elements in path are not currently visible.
 public int getVisibleChildCount(TreePath path) 
    Returns the number of visible children for path.
 public Enumeration<TreePath> getVisiblePathsFrom(TreePath path) 
    Returns an Enumerator that increments over the visible paths starting at the passed in location. The ordering of the enumeration is based on how the paths are displayed.
 public  void invalidatePathBounds(TreePath path) 
    Instructs the LayoutCache that the bounds for path are invalid, and need to be updated.
 public  void invalidateSizes() 
    Informs the TreeState that it needs to recalculate all the sizes it is referencing.
 public boolean isExpanded(TreePath path) 
    Returns true if the value identified by path is currently expanded.
 public  void setExpandedState(TreePath path,
    boolean isExpanded) 
    Marks the path path expanded state to isExpanded.
 public  void setModel(TreeModel newModel) 
    Sets the TreeModel that will provide the data.
 public  void setNodeDimensions(NodeDimensions nd) 
    Sets the renderer that is responsible for drawing nodes in the tree.
 public  void setRootVisible(boolean rootVisible) 
    Determines whether or not the root node from the TreeModel is visible.
 public  void setRowHeight(int rowHeight) 
    Sets the height of each cell. If the specified value is less than or equal to zero the current cell renderer is queried for each row's height.
 public  void treeNodesChanged(TreeModelEvent e) 
    Invoked after a node (or a set of siblings) has changed in some way. The node(s) have not changed locations in the tree or altered their children arrays, but other attributes have changed and may affect presentation. Example: the name of a file has changed, but it is in the same location in the file system.

    e.path returns the path the parent of the changed node(s).

    e.childIndices returns the index(es) of the changed node(s).

 public  void treeNodesInserted(TreeModelEvent e) 
    Invoked after nodes have been inserted into the tree.

    e.path returns the parent of the new nodes.

    e.childIndices returns the indices of the new nodes in ascending order.

 public  void treeNodesRemoved(TreeModelEvent e) 
    Invoked after nodes have been removed from the tree. Note that if a subtree is removed from the tree, this method may only be invoked once for the root of the removed subtree, not once for each individual set of siblings removed.

    e.path returns the former parent of the deleted nodes.

    e.childIndices returns the indices the nodes had before they were deleted in ascending order.

 public  void treeStructureChanged(TreeModelEvent e) 
    Invoked after the tree has drastically changed structure from a given node down. If the path returned by e.getPath is of length one and the first element does not identify the current root node the first element should become the new root of the tree.

    e.path holds the path to the node.

    e.childIndices returns null.