JDK-4066394 : ButtonGroup - cannot reset the model to the initial unselected state
  • Type: Enhancement
  • Component: client-libs
  • Sub-Component: javax.swing
  • Affected Version: 1.1.6,1.2.0,1.4.2,5.0,6
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS:
    generic,linux,solaris_2.5,windows_nt,windows_2000 generic,linux,solaris_2.5,windows_nt,windows_2000
  • CPU: generic,x86
  • Submitted: 1997-07-22
  • Updated: 2017-05-16
  • Resolved: 2005-09-20
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JDK 6
6 b53Fixed
Related Reports
Duplicate :  
JDK-4190102 - ButtonGroup deselection problem?
Duplicate :  
JDK-6314701 - ButtonGroup need a method to reset the group to initial state
Duplicate :  
JDK-6251051 - It is not possible to unselect a JRadioButton witch is part of a ButtonGroup
Description
ButtonGroup.setSelected(ButtonModel, boolean) as it is currently defined does not need the boolean, as if the boolean is false, it does nothing.  I assume that if the boolean is false, it should set the button to false, but it does not as currently defined.

Without this there is no way to set the ButtonGroup back to its initial unselected state.
Comments
WORK AROUND Name: keR10081 Date: 08/28/2001 use setSelected(null,boolean) to clear selection. ======================================================================
28-09-2004
SUGGESTED FIX Name: ibR10256 Date: 11/03/2003 ------- ButtonGroup.java ------- *** /tmp/sccs.EOaqJb Mon Nov 3 17:42:59 2003 --- ButtonGroup.java Mon Nov 3 17:42:33 2003 *************** *** 130,143 **** * selected, otherwise <code>false</code> */ public void setSelected(ButtonModel m, boolean b) { ! if (b && m != null && m != selection) { ! ButtonModel oldSelection = selection; ! selection = m; ! if (oldSelection != null) { ! oldSelection.setSelected(false); } ! m.setSelected(true); ! } } /** --- 130,167 ---- * selected, otherwise <code>false</code> */ public void setSelected(ButtonModel m, boolean b) { ! if (m != null) { ! if ((b && m == selection) || (!b && m != selection)) { ! return; } ! // check that the model belongs to the group ! if (m instanceof DefaultButtonModel) { ! if (((DefaultButtonModel)m).getGroup() != this) { ! return; ! } ! } else { ! int i = 0; ! while (i < buttons.size() && ! ((AbstractButton)buttons.elementAt(i)).getModel() != m) { ! i++; ! } ! if (i == buttons.size()) { ! return; ! } ! } ! ! if (b) { ! ButtonModel oldSelection = selection; ! selection = m; ! if (oldSelection != null) { ! oldSelection.setSelected(false); ! } ! m.setSelected(true); ! } else { ! selection = null; ! m.setSelected(false); ! } ! } } /** ###@###.### 2003-11-03 ======================================================================
03-11-2003
EVALUATION This functionality should be added. jeff.dinkins@Eng 1998-03-16 I agree. This request seems rather popular. There are multiple ways that we could implement this with the current API: 1) AbstractButton.setSelected(false) on a selected button. 2) ButtonGroup.setSelected(currentModel, false) 3) ButtonGroup.setSelected(null, true) We could also add a clearSelection method. ###@###.### 2001-11-13 Also, when fixing this, we may want to look into the fact that setSelected(), with a model that doesn't belong to a button in the group, clears the selection. ###@###.### 2001-11-13 Name: ibR10256 Date: 11/03/2003 I think the both two first suggested ways are appropriate (actually, implementing the second way makes the first way working too). Although this changes the method behaviour so will probably require a CCC request. A check that doesn't allow to change the state of a model that doesn't belong to the group can also be added to ButtonGroup.setSelected. ###@###.### 2003-11-03 ======================================================================
03-11-2003