/** ctor */
public FormFocusManager(FormComponent fc) {
/** now set the focusCycleRoot to false for any child forms. */
disableChildFocusCycleRoots(fc);
fc.setFocusCycleRoot(true);
m_form = fc;
/**
* First get all valid components from the stored focus policy. This list was created when the
* developer set the focus policy in the designer and stored the result.
*/
ArrayList stored_focus_set = buildStoredFocusList(fc);
/** Now get the default focus policy which is assigned by Swing. */
LinkedHashSet default_focus_set = buildDefaultFocusPolicy(fc);
/**
* Now we want to reconcile what has been stored versus the default policy because the form may
* have changed since the last time the focus policy was saved.
*/
/**
* now remove any elements from the stored policy that are not found in the default focus policy
*/
Iterator iter = stored_focus_set.iterator();
while (iter.hasNext()) {
Component comp = (Component) iter.next();
if (!default_focus_set.contains(comp)) {
iter.remove();
}
}
/** used for quick lookups */
HashSet stored_lookup = new HashSet();
stored_lookup.addAll(stored_focus_set);
/**
* now iterate over the default focus policy. Any components not found in the stored focus
* policy are added at the default position
*/
Component prev_comp = null;
iter = default_focus_set.iterator();
while (iter.hasNext()) {
Component comp = (Component) iter.next();
if (!stored_lookup.contains(comp)) {
stored_lookup.add(comp);
if (prev_comp == null) {
stored_focus_set.add(0, comp);
} else {
int pos = stored_focus_set.indexOf(prev_comp);
assert (pos >= 0);
if (pos >= 0) {
stored_focus_set.add(pos + 1, comp);
}
}
}
prev_comp = comp;
}
/** now the stored_focus_set has the correct focus order */
m_focus_list = stored_focus_set;
}
