edu.virginia.cs.mng.hypercast.demo
Class JTreeTable.TreeTableCellEditor

java.lang.Object
  |
  +--edu.virginia.cs.mng.hypercast.demo.AbstractCellEditor
        |
        +--edu.virginia.cs.mng.hypercast.demo.JTreeTable.TreeTableCellEditor

public class JTreeTable.TreeTableCellEditor

extends AbstractCellEditor

implements javax.swing.table.TableCellEditor

TreeTableCellEditor implementation. Component returned is the JTree.

Fields inherited from class edu.virginia.cs.mng.hypercast.demo.AbstractCellEditor

listenerList

Constructor Summary

JTreeTable.TreeTableCellEditor()

Method Summary

java.awt.Component	getTableCellEditorComponent(javax.swing.JTable table, java.lang.Object value, boolean isSelected, int r, int c)
boolean	isCellEditable(java.util.EventObject e) Overridden to return false, and if the event is a mouse event it is forwarded to the tree. The behavior for this is debatable, and should really be offered as a property.

Methods inherited from class edu.virginia.cs.mng.hypercast.demo.AbstractCellEditor

addCellEditorListener, cancelCellEditing, fireEditingCanceled, fireEditingStopped, getCellEditorValue, removeCellEditorListener, shouldSelectCell, stopCellEditing

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Constructor Detail

JTreeTable.TreeTableCellEditor

public JTreeTable.TreeTableCellEditor()

Method Detail

getTableCellEditorComponent

public java.awt.Component getTableCellEditorComponent(javax.swing.JTable table,
                                                      java.lang.Object value,
                                                      boolean isSelected,
                                                      int r,
                                                      int c)

Specified by:

getTableCellEditorComponent in interface javax.swing.table.TableCellEditor

isCellEditable

public boolean isCellEditable(java.util.EventObject e)

Overridden to return false, and if the event is a mouse event it is forwarded to the tree.

The behavior for this is debatable, and should really be offered as a property. By returning false, all keyboard actions are implemented in terms of the table. By returning true, the tree would get a chance to do something with the keyboard events. For the most part this is ok. But for certain keys, such as left/right, the tree will expand/collapse where as the table focus should really move to a different column. Page up/down should also be implemented in terms of the table. By returning false this also has the added benefit that clicking outside of the bounds of the tree node, but still in the tree column will select the row, whereas if this returned true that wouldn't be the case.

By returning false we are also enforcing the policy that the tree will never be editable (at least by a key sequence).

Overrides:

isCellEditable in class AbstractCellEditor