C++ (Cpp) AbstractDeclarativeObject示例

示例#1

文件： staticdialogmethodattached.cpp 项目： KDAB/DeclarativeWidgets

QWidget *StaticDialogMethodAttached::bestParentWindow() const
{
  QObject *parent = d->dialogParent;

  if (!parent)
    parent = this->parent();

  // if parent is a Declarative Object, search the proxied hierarchy
  AbstractDeclarativeObject *declarativeObject = dynamic_cast<AbstractDeclarativeObject*>(parent);
  if (declarativeObject)
    parent = declarativeObject->object();

  while (parent) {
    QWidget *widget = qobject_cast<QWidget*>(parent);
    if (widget)
      return widget->topLevelWidget();

    parent = parent->parent();
  }

  return 0;
}

示例#2

文件： declarativedeclarativeviewextension.cpp 项目： seem-sky/DeclarativeWidgets

void DeclarativeDeclarativeViewExtension::setDeclarativeRootContext(QObject *context)
{
  DeclarativeContext *declarativeContext = dynamic_cast<DeclarativeContext*>(context);
  if (!declarativeContext) {
    AbstractDeclarativeObject *declarativeObject = dynamic_cast<AbstractDeclarativeObject*>(context);
    if (declarativeObject)
      declarativeContext = dynamic_cast<DeclarativeContext*>(declarativeObject->object());
  }

  if (!declarativeContext) {
    qmlInfo(extendedDeclarativeView()) << "Cannot set object of type " << context->metaObject()->className()
                                       << " as root context";
    return;
  }

  if (declarativeContext == m_rootContext.data())
    return;

  // we can only set a different wrapper, not replace the view's root context
  Q_ASSERT(m_rootContext.isNull() || declarativeContext->context() == m_rootContext->context());

  m_rootContext = QPointer<DeclarativeContext>(declarativeContext);
  emit declarativeRootContextChanged();
}