PromotionTaskMenu::PromotionState PromotionTaskMenu::createPromotionActions(QDesignerFormWindowInterface *formWindow)
{
// clear out old
if (!m_promotionActions.empty()) {
qDeleteAll(m_promotionActions);
m_promotionActions.clear();
}
// No promotion of main container
if (formWindow->mainContainer() == m_widget)
return NotApplicable;
// Check for a homogenous selection
const PromotionSelectionList promotionSelection = promotionSelectionList(formWindow);
if (promotionSelection.empty())
return NoHomogenousSelection;
QDesignerFormEditorInterface *core = formWindow->core();
// if it is promoted: demote only.
if (isPromoted(formWindow->core(), m_widget)) {
const QString label = m_demoteLabel.arg( promotedExtends(core , m_widget));
QAction *demoteAction = new QAction(label, this);
connect(demoteAction, SIGNAL(triggered()), this, SLOT(slotDemoteFromCustomWidget()));
m_promotionActions.push_back(demoteAction);
return CanDemote;
}
// figure out candidates
const QString baseClassName = WidgetFactory::classNameOf(core, m_widget);
const WidgetDataBaseItemList candidates = promotionCandidates(core->widgetDataBase(), baseClassName );
if (candidates.empty()) {
// Is this thing promotable at all?
return QDesignerPromotionDialog::baseClassNames(core->promotion()).contains(baseClassName) ? CanPromote : NotApplicable;
}
// Set up a signal mapper to associate class names
if (!m_promotionMapper) {
m_promotionMapper = new QSignalMapper(this);
connect(m_promotionMapper, SIGNAL(mapped(QString)), this, SLOT(slotPromoteToCustomWidget(QString)));
}
QMenu *candidatesMenu = new QMenu();
// Create a sub menu
const WidgetDataBaseItemList::const_iterator cend = candidates.constEnd();
// Set up actions and map class names
for (WidgetDataBaseItemList::const_iterator it = candidates.constBegin(); it != cend; ++it) {
const QString customClassName = (*it)->name();
QAction *action = new QAction((*it)->name(), this);
connect(action, SIGNAL(triggered()), m_promotionMapper, SLOT(map()));
m_promotionMapper->setMapping(action, customClassName);
candidatesMenu->addAction(action);
}
// Sub menu action
QAction *subMenuAction = new QAction(m_promoteLabel, this);
subMenuAction->setMenu(candidatesMenu);
m_promotionActions.push_back(subMenuAction);
return CanPromote;
}
const QStringList &QDesignerPromotionDialog::baseClassNames(const QDesignerPromotionInterface *promotion) {
typedef QList<QDesignerWidgetDataBaseItemInterface *> WidgetDataBaseItemList;
static QStringList rc;
if (rc.empty()) {
// Convert the item list into a string list.
const WidgetDataBaseItemList dbItems = promotion->promotionBaseClasses();
const WidgetDataBaseItemList::const_iterator cend = dbItems.constEnd();
for (WidgetDataBaseItemList::const_iterator it = dbItems.constBegin() ; it != cend; ++it) {
rc.push_back( (*it)->name());
}
}
return rc;
}
QDESIGNER_SHARED_EXPORT WidgetDataBaseItemList
promotionCandidates(const QDesignerWidgetDataBaseInterface *db,
const QString &baseClassName)
{
WidgetDataBaseItemList rc;
// find existing promoted widgets deriving from base.
const int count = db->count();
for (int i = 0; i < count; ++i) {
QDesignerWidgetDataBaseItemInterface *item = db->item(i);
if (item->isPromoted() && item->extends() == baseClassName) {
rc.push_back(item);
}
}
return rc;
}
