bool UINode::addLastFocus ()
{
bool focus = false;
for (UINodeListRevIter i = _nodes.rbegin(); i != _nodes.rend(); ++i) {
UINode* nodePtr = *i;
nodePtr->removeFocus();
if (!focus) {
focus = nodePtr->addLastFocus();
if (focus) {
addFocus(0, 0);
}
}
}
if (_nodes.empty() && isActive()) {
addFocus(0, 0);
return true;
}
return focus;
}
bool UINode::prevFocus ()
{
if (_nodes.empty()) {
if (!isActive())
return false;
if (hasFocus())
return false;
addFocus(0, 0);
return true;
}
for (UINodeListRevIter i = _nodes.rbegin(); i != _nodes.rend(); ++i) {
UINode* nodePtr = *i;
// search the node that currently has the focus
if (!nodePtr->hasFocus())
continue;
if (nodePtr->prevFocus()) {
addFocus(0, 0);
return true;
}
nodePtr->removeFocus();
for (++i; i != _nodes.rend(); ++i) {
UINode* focusNodePtr = *i;
if (focusNodePtr->addLastFocus()) {
addFocus(0, 0);
return true;
}
}
break;
}
removeFocus();
return false;
}