JSpinner problem when extending AbstractSpinnerModel

Question

Hi,
I have a problem with a class that extends AbstractSpinnerModel.
My class is
  class MaxSpinnerModel extends AbstractSpinnerModel {
    Double value;
    public Object getNextValue() {
      // deltaSP is a JSpinner from wich I want to get the value (see rules below)
      value = new Double(value.doubleValue() + ((Double)deltaSP.getValue()).doubleValue());
      return value;
    public Object getPreviousValue() {
      // deltaSP is a JSpinner from wich I want to get the value (see rules below)
      value = new Double(value.doubleValue() - ((Double)deltaSP.getValue()).doubleValue());
      return value;
    public Object getValue() {
      if (value == null) {
        value = new Double(MAX_INI);
      return value;
    public void setValue(Object value) {
      if ((value == null) || !(value instanceof Double)) {
        throw new IllegalArgumentException("illegal value");
      if (!value.equals(this.value)) {
        this.value = (Double)value;
        fireStateChanged();
  }I have two problems:
-1 the editor is not editable ( when trying to put an Editor like a JFormattedTextField,
values are not visible)
-2 the most important so far, pressing the up or down button of the JSpinner do not
change the value on the screen while the method getNext or PreviousValue are
called.
What should I do to fix these two bugs?
I need to implement my spinner model because I would like to
bind dynamically the increment and decrement of the different spinner.
I must have the following rules for next and previous values:
-1 min
increment/decrement of min is delta and incrmenting min, should mofiy
middle (middle = min+max/2), and delta (delta = max -min), mas does not
change
-2 max same as min
-3 delta quit complicated let's say, increment/decrement is *2.0 and *0.5,
middle does not change, min and max change with the rules
min = middle - delta/2, max = middle + delta/2
-4 middle increment/decrement is delta, min and max are simply shited of delta

Answer 1

Hello,
I managed to solve the second question on my own.
I created another InfoSource and another Update rule to the InfoObject with flexible updating. It doesn’t erase the old data anymore.
Although I still have problems with the time characteristics.
Thank you,
Best regards