Class JSpinnerCellEditor

All Implemented Interfaces:
ActionListener, ImageObserver, MenuContainer, Serializable, EventListener, Accessible, CellEditor, ChangeListener, TableCellEditor

public class JSpinnerCellEditor extends JSpinner implements TableCellEditor, ChangeListener, ActionListener
This class provides a JSpinner-based editor for a table cell. This editor will automatically stop editing 3 seconds after the user stops making data entry with the editor.
Author:
Andrew Pavlin, KA2DDO
See Also:
  • Constructor Details

    • JSpinnerCellEditor

      public JSpinnerCellEditor(int min, int max)
      Create an editor based on a JSpinner with a specified integer range.
      Parameters:
      min - minimum int value allowed
      max - maximum int value allowed
    • JSpinnerCellEditor

      public JSpinnerCellEditor(SpinnerModel model)
      Create an editor based on a JSpinner with a specified SpinnerModel, could be any data type.
      Parameters:
      model - SpinnerModel to manage the back end
  • Method Details

    • getTableCellEditorComponent

      public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column)
      Sets an initial value for the editor. This will cause the editor to stopEditing and lose any partially edited value if the editor is editing when this method is called.

      Returns the component that should be added to the client's Component hierarchy. Once installed in the client's hierarchy this component will then be able to draw and receive user input.

      Specified by:
      getTableCellEditorComponent in interface TableCellEditor
      Parameters:
      table - the JTable that is asking the editor to edit; can be null
      value - the value of the cell to be edited; it is up to the specific editor to interpret and draw the value. For example, if value is the string "true", it could be rendered as a string or it could be rendered as a check box that is checked. null is a valid value
      isSelected - true if the cell is to be rendered with highlighting
      row - the row of the cell being edited
      column - the column of the cell being edited
      Returns:
      the component for editing
    • getCellEditorValue

      public Object getCellEditorValue()
      Returns the value contained in the editor.
      Specified by:
      getCellEditorValue in interface CellEditor
      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.
      Specified by:
      isCellEditable in interface CellEditor
      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

      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.
      Specified by:
      shouldSelectCell in interface CellEditor
      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:
    • 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.
      Specified by:
      stopCellEditing in interface CellEditor
      Returns:
      true if editing was stopped; false otherwise
    • cancelCellEditing

      public void cancelCellEditing()
      Tells the editor to cancel editing and not accept any partially edited value.
      Specified by:
      cancelCellEditing in interface CellEditor
    • addCellEditorListener

      public void addCellEditorListener(CellEditorListener l)
      Adds a listener to the list that's notified when the editor stops, or cancels editing.
      Specified by:
      addCellEditorListener in interface CellEditor
      Parameters:
      l - the CellEditorListener
    • removeCellEditorListener

      public void removeCellEditorListener(CellEditorListener l)
      Removes a listener from the list that's notified
      Specified by:
      removeCellEditorListener in interface CellEditor
      Parameters:
      l - the CellEditorListener
    • stateChanged

      public void stateChanged(ChangeEvent e)
      Invoked when the target of the listener has changed its state.
      Specified by:
      stateChanged in interface ChangeListener
      Parameters:
      e - a ChangeEvent object
    • actionPerformed

      public void actionPerformed(ActionEvent e)
      Invoked when an action occurs.
      Specified by:
      actionPerformed in interface ActionListener