Class JTree.TreeModelHandler

java.lang.Object
javax.swing.JTree.TreeModelHandler
All Implemented Interfaces:
EventListener, TreeModelListener
Enclosing class:
JTree
protected class JTree.TreeModelHandler extends Object implements TreeModelListener
Listens to the model and updates the expandedState accordingly when nodes are removed, or changed.
Since:
1.2

  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    protected
    TreeModelHandler()
    Constructs a TreeModelHandler.

  • Method Summary

    Modifier and Type
    Method
    Description
    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 declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • TreeModelHandler

      protected TreeModelHandler()
      Constructs a TreeModelHandler.

  • Method Details

    • treeNodesChanged

      public void treeNodesChanged(TreeModelEvent e)
      Description copied from interface: TreeModelListener

      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.

      To indicate the root has changed, childIndices and children will be null.

      Use e.getPath() to get the parent of the changed node(s). e.getChildIndices() returns the index(es) of the changed node(s).

      Specified by:
      treeNodesChanged in interface TreeModelListener
      Parameters:
      e - a TreeModelEvent describing changes to a tree model

    • treeNodesInserted

      public void treeNodesInserted(TreeModelEvent e)
      Description copied from interface: TreeModelListener

      Invoked after nodes have been inserted into the tree.

      Use e.getPath() to get the parent of the new node(s). e.getChildIndices() returns the index(es) of the new node(s) in ascending order.

      Specified by:
      treeNodesInserted in interface TreeModelListener
      Parameters:
      e - a TreeModelEvent describing changes to a tree model

    • treeStructureChanged

      public void treeStructureChanged(TreeModelEvent e)
      Description copied from interface: TreeModelListener

      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.

      Use e.getPath() to get the path to the node. e.getChildIndices() returns null.

      Specified by:
      treeStructureChanged in interface TreeModelListener
      Parameters:
      e - a TreeModelEvent describing changes to a tree model

    • treeNodesRemoved

      public void treeNodesRemoved(TreeModelEvent e)
      Description copied from interface: TreeModelListener

      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.

      Use e.getPath() to get the former parent of the deleted node(s). e.getChildIndices() returns, in ascending order, the index(es) the node(s) had before being deleted.

      Specified by:
      treeNodesRemoved in interface TreeModelListener
      Parameters:
      e - a TreeModelEvent describing changes to a tree model