When I create a couple of radio buttons (new Button(parent, SWT.RADIO)
) and set the selection programmatically using radioButton5.setSelection(true)
the previously selected radio button also remains selected. Do I have to iterate over all other radio buttons of the same group to unselect them or is there a simpler alternative? Thanks in advance.
Unfortunately, you have to iterate over all the options. For the first time when your UI comes up then a BN_CLICKED
event is fired. If your Shell
or Group
or whatever container of radio buttons is not created with SWT.NO_RADIO_GROUP
option then the following method is called:
void selectRadio ()
{
Control [] children = parent._getChildren ();
for (int i=0; i<children.length; i++) {
Control child = children [i];
if (this != child) child.setRadioSelection (false);
}
setSelection (true);
}
So essentially eclipse itself depends on iterating over all the radio buttons and toggling their state.
Every time you manually select a Radio Button the BN_CLICKED
event is fired and hence the auto toggling.
When you use button.setSelection(boolean)
then no BN_CLICKED
event is fired. Therefore no automatic toggling of radio buttons.
Check the org.eclipse.swt.widgets.Button
class for more details.