RowMapper
public class FixedHeightLayoutCache extends AbstractLayoutCache
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 JavaBeans has been added to the java.beans
package. Please see XMLEncoder
.
AbstractLayoutCache.NodeDimensions
nodeDimensions, rootVisible, rowHeight, treeModel, treeSelectionModel
Constructor | Description |
---|---|
FixedHeightLayoutCache() |
Constructs a FixedHeightLayoutCache . |
Modifier and Type | Method | Description |
---|---|---|
Rectangle |
getBounds |
Returns a rectangle giving the bounds needed to draw path. |
boolean |
getExpandedState |
Returns true if the path is expanded, and visible. |
TreePath |
getPathClosestTo |
Returns the path to the node that is closest to x,y. |
TreePath |
getPathForRow |
Returns the path for passed in row. |
int |
getRowCount() |
Returns the number of visible rows. |
int |
getRowForPath |
Returns the row that the last item identified in path is visible at. |
int |
getVisibleChildCount |
Returns the number of visible children for row. |
Enumeration |
getVisiblePathsFrom |
Returns an Enumerator that increments over the visible paths starting at the passed in location. |
void |
invalidatePathBounds |
Does nothing, FixedHeightLayoutCache doesn't cache width, and that is all that could change. |
void |
invalidateSizes() |
Informs the TreeState that it needs to recalculate all the sizes it is referencing. |
boolean |
isExpanded |
Returns true if the value identified by row is currently expanded. |
void |
setExpandedState |
Marks the path path expanded state to isExpanded . |
void |
setModel |
Sets the TreeModel that will provide the data. |
void |
setRootVisible |
Determines whether or not the root node from the TreeModel is visible. |
void |
setRowHeight |
Sets the height of each cell. |
void |
treeNodesChanged |
Invoked after a node (or a set of siblings) has changed in some way. |
void |
treeNodesInserted |
Invoked after nodes have been inserted into the tree. |
void |
treeNodesRemoved |
Invoked after nodes have been removed from the tree. |
void |
treeStructureChanged |
Invoked after the tree has drastically changed structure from a given node down. |
getModel, getNodeDimensions, getNodeDimensions, getPreferredHeight, getPreferredWidth, getRowHeight, getRowsForPaths, getSelectionModel, isFixedRowHeight, isRootVisible, setNodeDimensions, setSelectionModel
public FixedHeightLayoutCache()
FixedHeightLayoutCache
.public void setModel(TreeModel newModel)
setModel
in class AbstractLayoutCache
newModel
- the TreeModel that is to provide the datapublic void setRootVisible(boolean rootVisible)
setRootVisible
in class AbstractLayoutCache
rootVisible
- true if the root node of the tree is to be displayedpublic void setRowHeight(int rowHeight)
setRowHeight
in class AbstractLayoutCache
rowHeight
- the height of each cell, in pixelspublic int getRowCount()
getRowCount
in class AbstractLayoutCache
public void invalidatePathBounds(TreePath path)
invalidatePathBounds
in class AbstractLayoutCache
path
- the path being updatedpublic void invalidateSizes()
invalidateSizes
in class AbstractLayoutCache
public boolean isExpanded(TreePath path)
isExpanded
in class AbstractLayoutCache
path
- TreePath to checkpublic Rectangle getBounds(TreePath path, Rectangle placeIn)
getBounds
in class AbstractLayoutCache
path
- a TreePath specifying a nodeplaceIn
- a Rectangle object giving the available spacepublic TreePath getPathForRow(int row)
getPathForRow
in class AbstractLayoutCache
row
- the row being queriedTreePath
for the given rowpublic int getRowForPath(TreePath path)
getRowForPath
in class AbstractLayoutCache
path
- the TreePath
being queriedpublic TreePath getPathClosestTo(int x, int y)
getPathClosestTo
in class AbstractLayoutCache
x
- the horizontal component of the desired locationy
- the vertical component of the desired locationTreePath
closest to the specified pointpublic int getVisibleChildCount(TreePath path)
getVisibleChildCount
in class AbstractLayoutCache
path
- the path being queriedpublic Enumeration<TreePath> getVisiblePathsFrom(TreePath path)
getVisiblePathsFrom
in class AbstractLayoutCache
path
- the starting location for the enumerationEnumerator
starting at the desired locationpublic void setExpandedState(TreePath path, boolean isExpanded)
path
expanded state to isExpanded
.setExpandedState
in class AbstractLayoutCache
path
- the path being expanded or collapsedisExpanded
- true if the path should be expanded, false otherwisepublic boolean getExpandedState(TreePath path)
getExpandedState
in class AbstractLayoutCache
path
- the path being queriedpublic 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 AbstractLayoutCache
e
- the TreeModelEvent
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.
treeNodesInserted
in class AbstractLayoutCache
e
- the TreeModelEvent
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.
treeNodesRemoved
in class AbstractLayoutCache
e
- the TreeModelEvent
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.
treeStructureChanged
in class AbstractLayoutCache
e
- the TreeModelEvent
© 1993, 2023, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/tree/FixedHeightLayoutCache.html