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JavaTM 2 Platform Std. Ed. v1.3 |
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java.lang.Object
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+--javax.swing.tree.AbstractLayoutCache
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+--javax.swing.tree.VariableHeightLayoutCache
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. A future release of Swing will provide support for long term persistence.
| Inner classes inherited from class javax.swing.tree.AbstractLayoutCache |
AbstractLayoutCache.NodeDimensions |
| Fields inherited from class javax.swing.tree.AbstractLayoutCache |
nodeDimensions, rootVisible, rowHeight, treeModel, treeSelectionModel |
| Constructor Summary | |
VariableHeightLayoutCache()
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| Method Summary | |
Rectangle |
getBounds(TreePath path,
Rectangle placeIn)
Returns the Rectangle enclosing the label portion that the item identified by row will be drawn into. |
boolean |
getExpandedState(TreePath path)
Returns true if the path is expanded, and visible. |
TreePath |
getPathClosestTo(int x,
int y)
Returns the path to the node that is closest to x,y. |
TreePath |
getPathForRow(int row)
Returns the path for passed in row. |
int |
getPreferredHeight()
Returns the preferred height. |
int |
getPreferredWidth(Rectangle bounds)
Returns the preferred width and height for the region in visibleRegion. |
int |
getRowCount()
Returns the number of visible rows. |
int |
getRowForPath(TreePath path)
Returns the row that the last item identified in path is visible at. |
int |
getVisibleChildCount(TreePath path)
Returns the number of visible children for row. |
Enumeration |
getVisiblePathsFrom(TreePath path)
Returns an Enumerator that increments over the visible paths starting at the passed in location. |
void |
invalidatePathBounds(TreePath path)
Instructs the LayoutCache that the bounds for path
are invalid, and need to be updated. |
void |
invalidateSizes()
Informs the TreeState that it needs to recalculate all the sizes it is referencing. |
boolean |
isExpanded(TreePath path)
Returns true if the value identified by row is currently expanded. |
void |
setExpandedState(TreePath path,
boolean isExpanded)
Marks the path path expanded state to
isExpanded. |
void |
setModel(TreeModel newModel)
Sets the TreeModel that will provide the data. |
void |
setNodeDimensions(AbstractLayoutCache.NodeDimensions nd)
Sets the renderer that is responsible for drawing nodes in the tree. |
void |
setRootVisible(boolean rootVisible)
Determines whether or not the root node from the TreeModel is visible. |
void |
setRowHeight(int rowHeight)
Sets the height of each cell. |
void |
treeNodesChanged(TreeModelEvent e)
Invoked after a node (or a set of siblings) has changed in some way. |
void |
treeNodesInserted(TreeModelEvent e)
Invoked after nodes have been inserted into the tree. |
void |
treeNodesRemoved(TreeModelEvent e)
Invoked after nodes have been removed from the tree. |
void |
treeStructureChanged(TreeModelEvent e)
Invoked after the tree has drastically changed structure from a given node down. |
| Methods inherited from class javax.swing.tree.AbstractLayoutCache |
getModel, getNodeDimensions, getNodeDimensions, getRowHeight, getRowsForPaths, getSelectionModel, isFixedRowHeight, isRootVisible, setSelectionModel |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public VariableHeightLayoutCache()
| Method Detail |
public void setModel(TreeModel newModel)
setModel in class AbstractLayoutCachenewModel - the TreeModel that is to provide the datapublic void setRootVisible(boolean rootVisible)
setRootVisible in class AbstractLayoutCacherootVisible - true if the root node of the tree is to be displayedAbstractLayoutCache.rootVisiblepublic void setRowHeight(int rowHeight)
setRowHeight in class AbstractLayoutCacherowHeight - the height of each cell, in pixelspublic void setNodeDimensions(AbstractLayoutCache.NodeDimensions nd)
setNodeDimensions in class AbstractLayoutCachejavax.swing.tree.AbstractLayoutCachend - a NodeDimensions object
public void setExpandedState(TreePath path,
boolean isExpanded)
path expanded state to
isExpanded.setExpandedState in class AbstractLayoutCachepublic boolean getExpandedState(TreePath path)
getExpandedState in class AbstractLayoutCache
public Rectangle getBounds(TreePath path,
Rectangle placeIn)
getBounds in class AbstractLayoutCachejavax.swing.tree.AbstractLayoutCachepath - a TreePath specifying a nodeplaceIn - a Rectangle object giving the available spacepublic TreePath getPathForRow(int row)
getPathForRow in class AbstractLayoutCachepublic int getRowForPath(TreePath path)
getRowForPath in class AbstractLayoutCachepublic int getRowCount()
getRowCount in class AbstractLayoutCachepublic void invalidatePathBounds(TreePath path)
path
are invalid, and need to be updated.invalidatePathBounds in class AbstractLayoutCachepublic int getPreferredHeight()
getPreferredHeight in class AbstractLayoutCachepublic int getPreferredWidth(Rectangle bounds)
visibleRegion.getPreferredWidth in class AbstractLayoutCache
public TreePath getPathClosestTo(int x,
int y)
getPathClosestTo in class AbstractLayoutCachepublic Enumeration getVisiblePathsFrom(TreePath path)
getVisiblePathsFrom in class AbstractLayoutCachepublic int getVisibleChildCount(TreePath path)
getVisibleChildCount in class AbstractLayoutCachepublic void invalidateSizes()
invalidateSizes in class AbstractLayoutCachepublic boolean isExpanded(TreePath path)
isExpanded in class AbstractLayoutCachepublic 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).
treeNodesChanged in class AbstractLayoutCachepublic 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.
treeNodesInserted in class AbstractLayoutCachepublic 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.
treeNodesRemoved in class AbstractLayoutCachepublic 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.
treeStructureChanged in class AbstractLayoutCache
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JavaTM 2 Platform Std. Ed. v1.3 |
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