ComboBox Problem to change the size of selected text in JTextPane.

Question

hi 2 all!
I have a problem in combo box actions, when i change the item in the combo its set is not set at that time but that action is performed when next action is taken, i have used combobox.setAction(new StyledEditorKit.FontSizeAction(" click", 12);) command to set the size of the selected text
Plz suggest the solution also if possible,plz provide some code for this
Action action1 = new StyledEditorKit.FontSizeAction(
                                             "double click", 12);
                                   Action action2 = new StyledEditorKit.FontSizeAction(
                                             "double click", 14);
                                   Action action3 = new StyledEditorKit.FontSizeAction(
                                             "double click", 18);
s2 = (String) cb7.getSelectedItem();
                                   if (s2.equals("Small")) {
                                        cb7.setAction(action1);
                                        e1.setSource(cb7);
                                                  } else
                                   if (s2.equals("Medium")) {
                                        cb7.setAction(action2);
                                        e1.setSource(cb7);
                                                                      } else if (s2.equals("Large")) {
                                        cb7.setAction(action3);
                                        // e1.setSource(cb7);
when i chooze any combobox item then according to that item i set the Action on ComboBox but that action is not working properly on the selected text in the JTextPane..means selected text in JText Pane is not changes its Size according to the comboBox selected ITEM.
PLZ plzzzzzzzzzz help me:((.i will be thankfull to u.
thanx in advance..

Answer 1

this code is not working properly according to the action i set on comboBox.Thats correct, the setAction() method is used to invoke an existing Action on the combo box, not create a new Action.
What you need to do is have a single action that uses the information from the item that was selected to build a dynamic Action to change the font. Something like:
public void actionPerformed(ActionEvent e)
     JComboBox comboBox = (JComboBox)e.getSource();
     int fontSize = Integer.parseInt( comboBox.getSelectedItem().toString() );
     Action fontAction = new StyledEditorKit.FontSizeAction("size", fontSize);
     fontAction.actionPerformed(null);
}