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java.lang.Objectjavax.swing.tree.DefaultTreeModel
public class DefaultTreeModel
DefaultTreeModel
Field Summary | |
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protected boolean |
asksAllowsChildren
asksAllowsChildren |
protected EventListenerList |
listenerList
listenerList |
protected TreeNode |
root
root |
Constructor Summary | |
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DefaultTreeModel(TreeNode root)
Constructor DefaultTreeModel where any node can have children. |
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DefaultTreeModel(TreeNode aRoot,
boolean asksAllowsChildren)
Create the DefaultTreeModel that may check if the nodes can have children or not. |
Method Summary | ||
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void |
addTreeModelListener(TreeModelListener listener)
Registers a listere to the model. |
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boolean |
asksAllowsChildren()
asksAllowsChildren |
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protected void |
fireTreeNodesChanged(Object source,
Object[] path,
int[] childIndices,
Object[] children)
Notifies all listeners that have registered interest for notification on this event type. |
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protected void |
fireTreeNodesInserted(Object source,
Object[] path,
int[] childIndices,
Object[] children)
fireTreeNodesInserted |
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protected void |
fireTreeNodesRemoved(Object source,
Object[] path,
int[] childIndices,
Object[] children)
fireTreeNodesRemoved |
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protected void |
fireTreeStructureChanged(Object source,
Object[] path,
int[] childIndices,
Object[] children)
fireTreeStructureChanged |
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Object |
getChild(Object node,
int idx)
getChild |
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int |
getChildCount(Object node)
getChildCount |
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int |
getIndexOfChild(Object parent,
Object child)
getIndexOfChild |
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getListeners(Class<T> listenerType)
Returns the registered listeners of a given type. |
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TreeNode[] |
getPathToRoot(TreeNode node)
Builds the parents of node up to and including the root node, where the original node is the last element in the returned array. |
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protected TreeNode[] |
getPathToRoot(TreeNode node,
int depth)
Builds the parents of node up to and including the root node, where the original node is the last element in the returned array. |
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Object |
getRoot()
getRoot |
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TreeModelListener[] |
getTreeModelListeners()
Returns all registered TreeModelListener listeners. |
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void |
insertNodeInto(MutableTreeNode newChild,
MutableTreeNode parent,
int index)
Invoked this to insert newChild at location index in parents children. |
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boolean |
isLeaf(Object node)
Returns if the specified node is a leaf or not. |
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void |
nodeChanged(TreeNode node)
Invoke this method after you've changed how node is to be represented in the tree. |
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void |
nodesChanged(TreeNode node,
int[] childIndices)
Invoke this method after you've changed how the children identified by childIndices are to be represented in the tree. |
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void |
nodeStructureChanged(TreeNode node)
Invoke this method if you've totally changed the children of node and its childrens children. |
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void |
nodesWereInserted(TreeNode parent,
int[] childIndices)
Invoke this method after you've inserted some TreeNodes into node. childIndices should be the index of the new elements and must be sorted in ascending order. |
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void |
nodesWereRemoved(TreeNode parent,
int[] childIndices,
Object[] removedChildren)
Invoke this method after you've removed some TreeNodes from node. |
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void |
reload()
Invoke this method if you've modified the TreeNodes upon which this model depends. |
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void |
reload(TreeNode node)
Invoke this method if you've modified the TreeNodes upon which this model depends. |
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void |
removeNodeFromParent(MutableTreeNode node)
Message this to remove node from its parent. |
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void |
removeTreeModelListener(TreeModelListener listener)
Removes a listener from the model. |
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void |
setAsksAllowsChildren(boolean value)
setAsksAllowsChildren |
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void |
setRoot(TreeNode root)
setRoot |
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void |
valueForPathChanged(TreePath path,
Object newValue)
Messaged when the user has altered the value for the item identified by path to newValue. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected TreeNode root
protected EventListenerList listenerList
protected boolean asksAllowsChildren
Constructor Detail |
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public DefaultTreeModel(TreeNode root)
root
- the tree root.public DefaultTreeModel(TreeNode aRoot, boolean asksAllowsChildren)
aRoot
- the tree root.asksAllowsChildren
- if true, each node is asked if it can have
children. If false, the model does not care about this, supposing, that
any node can have children.Method Detail |
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public boolean asksAllowsChildren()
public void setAsksAllowsChildren(boolean value)
value
- TODOpublic void setRoot(TreeNode root)
root
- the root node.public Object getRoot()
getRoot
in interface TreeModel
public int getIndexOfChild(Object parent, Object child)
getIndexOfChild
in interface TreeModel
parent
- TODOchild
- TODO
public Object getChild(Object node, int idx)
getChild
in interface TreeModel
node
- TODOidx
- TODO
public int getChildCount(Object node)
getChildCount
in interface TreeModel
node
- TODO
public boolean isLeaf(Object node)
asksAllowsChildren
is true, then this checks if the TreeNode
allows children, otherwise it returns the TreeNode's leaf
property.
isLeaf
in interface TreeModel
node
- the node to check
true
if the node is a leaf node,
false
otherwise
ClassCastException
- if the specified node is not a
TreeNode
instanceTreeNode.getAllowsChildren()
,
TreeNode.isLeaf()
public void reload()
Invoke this method if you've modified the TreeNodes upon which this model depends. The model will notify all of its listeners that the model has changed. It will fire the events, necessary to update the layout caches and repaint the tree. The tree will not be properly refreshed if you call the JTree.repaint instead.
This method will refresh the information about whole tree from the root. If
only part of the tree should be refreshed, it is more effective to call
reload(TreeNode)
.
public void reload(TreeNode node)
node
- - the tree node, from which the tree nodes have changed
(inclusive). If you do not know this node, call reload()
instead.public void valueForPathChanged(TreePath path, Object newValue)
valueForPathChanged
in interface TreeModel
path
- - path to the node that the user has alterednewValue
- - the new value from the TreeCellEditorpublic void insertNodeInto(MutableTreeNode newChild, MutableTreeNode parent, int index)
newChild
- is the node to add to the parent's childrenparent
- is the parent of the newChildindex
- is the index of the newChildpublic void removeNodeFromParent(MutableTreeNode node)
node
- to be removedpublic void nodeChanged(TreeNode node)
node
- that was changedpublic void nodesWereInserted(TreeNode parent, int[] childIndices)
parent
- that had a child added tochildIndices
- of the children addedpublic void nodesWereRemoved(TreeNode parent, int[] childIndices, Object[] removedChildren)
parent
- that had a child added tochildIndices
- of the children addedremovedChildren
- are all the children removed from parent.public void nodesChanged(TreeNode node, int[] childIndices)
node
- that is the parent of the children that changed in a tree.childIndices
- are the child nodes that changed.public void nodeStructureChanged(TreeNode node)
node
- that had its children and grandchildren changed.public TreeNode[] getPathToRoot(TreeNode node)
node
- - the TreeNode to get the path for
protected TreeNode[] getPathToRoot(TreeNode node, int depth)
node
- - the TreeNode to get the path fordepth
- - an int giving the number of steps already taken
towards the root (on recursive calls), used to size the returned array
public void addTreeModelListener(TreeModelListener listener)
addTreeModelListener
in interface TreeModel
listener
- the listener to addpublic void removeTreeModelListener(TreeModelListener listener)
removeTreeModelListener
in interface TreeModel
listener
- the listener to removepublic TreeModelListener[] getTreeModelListeners()
TreeModelListener
listeners.
protected void fireTreeNodesChanged(Object source, Object[] path, int[] childIndices, Object[] children)
source
- the node being changedpath
- the path to the root nodechildIndices
- the indices of the changed elementschildren
- the changed elementsprotected void fireTreeNodesInserted(Object source, Object[] path, int[] childIndices, Object[] children)
source
- the node where new nodes got insertedpath
- the path to the root nodechildIndices
- the indices of the new elementschildren
- the new elementsprotected void fireTreeNodesRemoved(Object source, Object[] path, int[] childIndices, Object[] children)
source
- the node where nodes got removed-path
- the path to the root nodechildIndices
- the indices of the removed elementschildren
- the removed elementsprotected void fireTreeStructureChanged(Object source, Object[] path, int[] childIndices, Object[] children)
source
- the node where the model has changedpath
- the path to the root nodechildIndices
- the indices of the affected elementschildren
- the affected elementspublic <T extends EventListener> T[] getListeners(Class<T> listenerType)
listenerType
- the listener type to return
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