This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.


javax.swing
interface CellEditor

All Known Subinterfaces:
TableCellEditor, TreeCellEditor
All Known Implementing Classes:
AbstractCellEditor, DefaultCellEditor

public interface CellEditor

This interface defines the methods any general editor should be able to implement.

Having this interface enables complex components (the client of the editor) such as JTree and JTable to allow any generic editor to edit values in a table cell, or tree cell, etc. Without this generic editor interface, JTable would have to know about specific editors, such as JTextField, JCheckBox, JComboBox, etc. In addition, without this interface, clients of editors such as JTable would not be able to work with any editors developed in the future by the user or a 3rd party ISV.

To use this interface, a developer creating a new editor can have the new component implement the interface. Or the developer can choose a wrapper based approach and provide a companion object which implements the CellEditor interface (See JCellEditor for example). The wrapper approach is particularly useful if the user want to use a 3rd party ISV editor with JTable, but the ISV didn't implement the CellEditor interface. The user can simply create an object that contains an instance of the 3rd party editor object and "translate" the CellEditor API into the 3rd party editor's API.


Method Summary
 void

          Adds a listener to the list that's notified when the editor stops, or cancels editing.
 void

          Tells the editor to cancel editing and not accept any partially edited value.
 Object

          Returns the value contained in the editor.
 boolean

          Asks the editor if it can start editing using anEvent.
 void

          Removes a listener from the list that's notified
 boolean

          Returns true if the editing cell should be selected, false otherwise.
 boolean

          Tells the editor to stop editing and accept any partially edited value as the value of the editor.
 

Method Detail

addCellEditorListener

public void addCellEditorListener(CellEditorListener l)
Adds a listener to the list that's notified when the editor stops, or cancels editing.

Parameters:
l - the CellEditorListener

cancelCellEditing

public void cancelCellEditing()
Tells the editor to cancel editing and not accept any partially edited value.


getCellEditorValue

public Object getCellEditorValue()
Returns the value contained in the editor.

Returns:
the value contained in the editor

isCellEditable

public boolean isCellEditable(EventObject anEvent)
Asks the editor if it can start editing using anEvent. anEvent is in the invoking component coordinate system. The editor can not assume the Component returned by getCellEditorComponent is installed. This method is intended for the use of client to avoid the cost of setting up and installing the editor component if editing is not possible. If editing can be started this method returns true.

Parameters:
anEvent - the event the editor should use to consider whether to begin editing or not
Returns:
true if editing can be started

removeCellEditorListener

public void removeCellEditorListener(CellEditorListener l)
Removes a listener from the list that's notified

Parameters:
l - the CellEditorListener

shouldSelectCell

public boolean shouldSelectCell(EventObject anEvent)
Returns true if the editing cell should be selected, false otherwise. Typically, the return value is true, because is most cases the editing cell should be selected. However, it is useful to return false to keep the selection from changing for some types of edits. eg. A table that contains a column of check boxes, the user might want to be able to change those checkboxes without altering the selection. (See Netscape Communicator for just such an example) Of course, it is up to the client of the editor to use the return value, but it doesn't need to if it doesn't want to.

Parameters:
anEvent - the event the editor should use to start editing
Returns:
true if the editor would like the editing cell to be selected; otherwise returns false

stopCellEditing

public boolean stopCellEditing()
Tells the editor to stop editing and accept any partially edited value as the value of the editor. The editor returns false if editing was not stopped; this is useful for editors that validate and can not accept invalid entries.

Returns:
true if editing was stopped; false otherwise


This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.
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Copyright 2008 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.
The official Sun™ documentation can be found here at http://java.sun.com/javase/6/docs/api/.