Package uk.ac.starlink.datanode.tree
Class TreeModelNode
java.lang.Object
uk.ac.starlink.datanode.tree.TreeModelNode
Object used to store information about items in the DataNodeTreeModel
hierarchy. This plays a role somewhat similar to that which
TreeNode
plays for
DefaultTreeModel
, but also takes care of
some of the duties related to asynhronous expansion of the node.
You should generally synchronize on a TreeModelNode when accessing it in a way which might modify it or be sensitive to modification of it.
To create a TreeModelNode, use the
DataNodeTreeModel.makeModelNode(uk.ac.starlink.datanode.nodes.DataNode, uk.ac.starlink.datanode.tree.TreeModelNode)
method of DataNodeTreeModel.
- Author:
- Mark Taylor (Starlink)
-
Method Summary
Modifier and TypeMethodDescriptionReturns the list which contains the children.Returns the DataNode managed by this TreeModelNode.Returns the object which is currently in charge of locating this nodes children.Returns the parent of this node.void
setExpander
(NodeExpander expander) Installs a NodeExpander object to take charge of locating this node's children.
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Method Details
-
getChildren
Returns the list which contains the children. This list may be modified, but only TreeModelNodes should be elements of the list.- Returns:
- mutable list of child nodes
-
getParent
Returns the parent of this node. Will be null for the root.- Returns:
- parent node
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getDataNode
Returns the DataNode managed by this TreeModelNode.- Returns:
- data node
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setExpander
Installs a NodeExpander object to take charge of locating this node's children. Any existing NodeExpander owned by this node will be uninstalled. NodeExpanders behave in such a way that such uninstallation will (at least may) cause them to stop expanding, so an expander should not be deinstalled and installed again later.It is the responsibility of the calling code to ensure that the new expander starts doing its expansion work.
- Parameters:
expander
- new node expander
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getExpander
Returns the object which is currently in charge of locating this nodes children. If null, no node expansion has been attempted on this node.- Returns:
- the expander which has started (and may have finished) locating this node's children
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