RowMapper
FixedHeightLayoutCache
, VariableHeightLayoutCache
public abstract class AbstractLayoutCache extends Object implements RowMapper
java.beans
package. Please see XMLEncoder
.Modifier and Type | Class | Description |
---|---|---|
static class |
AbstractLayoutCache.NodeDimensions |
Used by AbstractLayoutCache to determine the size and x origin of a particular node. |
Modifier and Type | Field | Description |
---|---|---|
protected AbstractLayoutCache.NodeDimensions |
nodeDimensions |
Object responsible for getting the size of a node. |
protected boolean |
rootVisible |
True if the root node is displayed, false if its children are the highest visible nodes. |
protected int |
rowHeight |
Height to use for each row. |
protected TreeModel |
treeModel |
Model providing information. |
protected TreeSelectionModel |
treeSelectionModel |
Selection model. |
Modifier | Constructor | Description |
---|---|---|
protected |
Constructor for subclasses to call. |
Modifier and Type | Method | Description |
---|---|---|
abstract Rectangle |
getBounds |
Returns a rectangle giving the bounds needed to draw path. |
abstract boolean |
getExpandedState |
Returns true if the path is expanded, and visible. |
TreeModel |
getModel() |
Returns the TreeModel that is providing the data. |
AbstractLayoutCache.NodeDimensions |
getNodeDimensions() |
Returns the object that renders nodes in the tree, and which is responsible for calculating the dimensions of individual nodes. |
protected Rectangle |
getNodeDimensions |
Returns, by reference in placeIn , the size needed to represent value . |
abstract TreePath |
getPathClosestTo |
Returns the path to the node that is closest to x,y. |
abstract TreePath |
getPathForRow |
Returns the path for passed in row. |
int |
getPreferredHeight() |
Returns the preferred height. |
int |
getPreferredWidth |
Returns the preferred width for the passed in region. |
abstract int |
getRowCount() |
Number of rows being displayed. |
abstract int |
getRowForPath |
Returns the row that the last item identified in path is visible at. |
int |
getRowHeight() |
Returns the height of each row. |
int[] |
getRowsForPaths |
Returns the rows that the TreePath instances in path are being displayed at. |
TreeSelectionModel |
getSelectionModel() |
Returns the model used to maintain the selection. |
abstract int |
getVisibleChildCount |
Returns the number of visible children for row. |
abstract Enumeration |
getVisiblePathsFrom |
Returns an Enumerator that increments over the visible paths starting at the passed in location. |
abstract void |
invalidatePathBounds |
Instructs the LayoutCache that the bounds for path are invalid, and need to be updated. |
abstract void |
invalidateSizes() |
Informs the TreeState that it needs to recalculate all the sizes it is referencing. |
abstract boolean |
isExpanded |
Returns true if the value identified by row is currently expanded. |
protected boolean |
isFixedRowHeight() |
Returns true if the height of each row is a fixed size. |
boolean |
isRootVisible() |
Returns true if the root node of the tree is displayed. |
abstract void |
setExpandedState |
Marks the path path expanded state to isExpanded . |
void |
setModel |
Sets the TreeModel that will provide the data. |
void |
setNodeDimensions |
Sets the renderer that is responsible for drawing nodes in the tree and which is therefore responsible for calculating the dimensions of individual nodes. |
void |
setRootVisible |
Determines whether or not the root node from the TreeModel is visible. |
void |
setRowHeight |
Sets the height of each cell. |
void |
setSelectionModel |
Sets the TreeSelectionModel used to manage the selection to new LSM. |
abstract void |
treeNodesChanged |
Invoked after a node (or a set of siblings) has changed in some way. |
abstract void |
treeNodesInserted |
Invoked after nodes have been inserted into the tree. |
abstract void |
treeNodesRemoved |
Invoked after nodes have been removed from the tree. |
abstract void |
treeStructureChanged |
Invoked after the tree has drastically changed structure from a given node down. |
protected AbstractLayoutCache.NodeDimensions nodeDimensions
protected TreeModel treeModel
protected TreeSelectionModel treeSelectionModel
protected boolean rootVisible
protected int rowHeight
protected AbstractLayoutCache()
public void setNodeDimensions(AbstractLayoutCache.NodeDimensions nd)
nd
- a NodeDimensions
objectpublic AbstractLayoutCache.NodeDimensions getNodeDimensions()
NodeDimensions
objectpublic void setModel(TreeModel newModel)
TreeModel
that will provide the data.newModel
- the TreeModel
that is to provide the datapublic TreeModel getModel()
TreeModel
that is providing the data.TreeModel
that is providing the data@BeanProperty(description="Whether or not the root node from the TreeModel is visible.") public void setRootVisible(boolean rootVisible)
TreeModel
is visible.rootVisible
- true if the root node of the tree is to be displayedpublic boolean isRootVisible()
@BeanProperty(description="The height of each cell.") public void setRowHeight(int rowHeight)
rowHeight
- the height of each cell, in pixelspublic int getRowHeight()
public void setSelectionModel(TreeSelectionModel newLSM)
TreeSelectionModel
used to manage the selection to new LSM.newLSM
- the new TreeSelectionModel
public TreeSelectionModel getSelectionModel()
treeSelectionModel
public int getPreferredHeight()
public int getPreferredWidth(Rectangle bounds)
(bounds.x, bounds.y)
and ends at bounds.height + bounds.y
. If bounds
is null
, the preferred width for all the nodes will be returned (and this may be a VERY expensive computation).bounds
- the region being queriedpublic abstract boolean isExpanded(TreePath path)
path
- TreePath to checkpublic abstract Rectangle getBounds(TreePath path, Rectangle placeIn)
path
- a TreePath
specifying a nodeplaceIn
- a Rectangle
object giving the available spaceRectangle
object specifying the space to be usedpublic abstract TreePath getPathForRow(int row)
null
is returned.row
- the row being queriedTreePath
for the given rowpublic abstract int getRowForPath(TreePath path)
path
- the TreePath
being queriedpublic abstract TreePath getPathClosestTo(int x, int y)
null
, otherwise it'll 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.x
- the horizontal component of the desired locationy
- the vertical component of the desired locationTreePath
closest to the specified pointpublic abstract Enumeration<TreePath> getVisiblePathsFrom(TreePath path)
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. The first element of the returned enumeration will be path, unless it isn't visible, in which case null
will be returned.path
- the starting location for the enumerationEnumerator
starting at the desired locationpublic abstract int getVisibleChildCount(TreePath path)
path
- the path being queriedpublic abstract void setExpandedState(TreePath path, boolean isExpanded)
path
expanded state to isExpanded
.path
- the path being expanded or collapsedisExpanded
- true if the path should be expanded, false otherwisepublic abstract boolean getExpandedState(TreePath path)
path
- the path being queriedpublic abstract int getRowCount()
public abstract void invalidateSizes()
TreeState
that it needs to recalculate all the sizes it is referencing.public abstract void invalidatePathBounds(TreePath path)
LayoutCache
that the bounds for path
are invalid, and need to be updated.path
- the path being updatedpublic abstract 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).
e
- the TreeModelEvent
public abstract 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.
e
- the TreeModelEvent
public abstract 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.
e
- the TreeModelEvent
public abstract 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.
e
- the TreeModelEvent
public int[] getRowsForPaths(TreePath[] paths)
TreePath
instances in path
are being displayed at. This method should return an array of the same length as that passed in, and if one of the TreePaths
in path
is not valid its entry in the array should be set to -1.getRowsForPaths
in interface RowMapper
paths
- the array of TreePath
s being queriedTreePath
is displayed; if paths
is null
, null
is returnedprotected Rectangle getNodeDimensions(Object value, int row, int depth, boolean expanded, Rectangle placeIn)
placeIn
, the size needed to represent value
. If inPlace
is null
, a newly created Rectangle
should be returned, otherwise the value should be placed in inPlace
and returned. This will return null
if there is no renderer.value
- the value
to be representedrow
- row being querieddepth
- the depth of the rowexpanded
- true if row is expanded, false otherwiseplaceIn
- a Rectangle
containing the size needed to represent value
Rectangle
containing the node dimensions, or null
if node has no dimensionprotected boolean isFixedRowHeight()
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Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/tree/AbstractLayoutCache.html