CellEditor (Java Platform SE 8 ) (original) (raw)

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

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 andJTable 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 asJTable 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 (SeeDefaultCellEditor 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 theCellEditor 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.
See Also:
CellEditorListener

• • Method Summary

  All Methods Instance Methods Abstract Methods

  Modifier and Type	Method	Description
  void	addCellEditorListener(CellEditorListener l)	Adds a listener to the list that's notified when the editor stops, or cancels editing.
  void	cancelCellEditing()	Tells the editor to cancel editing and not accept any partially edited value.
  Object	getCellEditorValue()	Returns the value contained in the editor.
  boolean	isCellEditable(EventObject anEvent)	Asks the editor if it can start editing using anEvent.
  void	removeCellEditorListener(CellEditorListener l)	Removes a listener from the list that's notified
  boolean	shouldSelectCell(EventObject anEvent)	Returns true if the editing cell should be selected, false otherwise.
  boolean	stopCellEditing()	Tells the editor to stop editing and accept any partially edited value as the value of the editor.

• • Method Detail

     * #### getCellEditorValue  
     [Object](../../java/lang/Object.html "class in java.lang") getCellEditorValue()  
     Returns the value contained in the editor.  
     Returns:  
     the value contained in the editor  
     * #### isCellEditable  
     boolean isCellEditable([EventObject](../../java/util/EventObject.html "class in java.util") 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  
     See Also:  
     [shouldSelectCell(java.util.EventObject)](../../javax/swing/CellEditor.html#shouldSelectCell-java.util.EventObject-)  
     * #### shouldSelectCell  
     boolean shouldSelectCell([EventObject](../../java/util/EventObject.html "class in java.util") 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  
     See Also:  
     [isCellEditable(java.util.EventObject)](../../javax/swing/CellEditor.html#isCellEditable-java.util.EventObject-)  
     * #### stopCellEditing  
     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  
     * #### cancelCellEditing  
     void cancelCellEditing()  
     Tells the editor to cancel editing and not accept any partially edited value.  
     * #### addCellEditorListener  
     void addCellEditorListener([CellEditorListener](../../javax/swing/event/CellEditorListener.html "interface in javax.swing.event") l)  
     Adds a listener to the list that's notified when the editor stops, or cancels editing.  
     Parameters:  
     `l` \- the CellEditorListener  
     * #### removeCellEditorListener  
     void removeCellEditorListener([CellEditorListener](../../javax/swing/event/CellEditorListener.html "interface in javax.swing.event") l)  
     Removes a listener from the list that's notified  
     Parameters:  
     `l` \- the CellEditorListener

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