/*!
If a QAccessibleInterface implementation exists for the given \a object,
this function returns a pointer to the implementation; otherwise it
returns 0.
The function calls all installed factory functions (from most
recently installed to least recently installed) until one is found
that provides an interface for the class of \a object. If no
factory can provide an accessibility implementation for the class
the function loads installed accessibility plugins, and tests if
any of the plugins can provide the implementation.
If no implementation for the object's class is available, the
function tries to find an implementation for the object's parent
class, using the above strategy.
\warning The caller is responsible for deleting the returned
interface after use.
*/
QAccessibleInterface *QAccessible::queryAccessibleInterface(QObject *object)
{
accessibility_active = true;
QAccessibleInterface *iface = 0;
if (!object)
return 0;
const QMetaObject *mo = object->metaObject();
while (mo) {
const QLatin1String cn(mo->className());
for (int i = qAccessibleFactories()->count(); i > 0; --i) {
InterfaceFactory factory = qAccessibleFactories()->at(i - 1);
iface = factory(cn, object);
if (iface)
return iface;
}
#ifndef QT_NO_LIBRARY
QAccessibleFactoryInterface *factory = qobject_cast<QAccessibleFactoryInterface*>(loader()->instance(cn));
if (factory) {
iface = factory->create(cn, object);
if (iface)
return iface;
}
#endif
mo = mo->superClass();
}
QWidget *widget = qobject_cast<QWidget*>(object);
if (widget)
return new QAccessibleWidget(widget);
else if (object == qApp)
return new QAccessibleApplication();
return 0;
}
/*!
If a QAccessibleInterface implementation exists for the given \a object,
this function returns a pointer to the implementation; otherwise it
returns 0.
The function calls all installed factory functions (from most
recently installed to least recently installed) until one is found
that provides an interface for the class of \a object. If no
factory can provide an accessibility implementation for the class
the function loads installed accessibility plugins, and tests if
any of the plugins can provide the implementation.
If no implementation for the object's class is available, the
function tries to find an implementation for the object's parent
class, using the above strategy.
\warning The caller is responsible for deleting the returned
interface after use.
*/
QAccessibleInterface *QAccessible::queryAccessibleInterface(QObject *object)
{
accessibility_active = true;
QAccessibleInterface *iface = 0;
if (!object)
return 0;
QEvent e(QEvent::AccessibilityPrepare);
QCoreApplication::sendEvent(object, &e);
const QMetaObject *mo = object->metaObject();
while (mo) {
const QLatin1String cn(mo->className());
for (int i = qAccessibleFactories()->count(); i > 0; --i) {
InterfaceFactory factory = qAccessibleFactories()->at(i - 1);
iface = factory(cn, object);
if (iface)
return iface;
}
#ifndef QT_NO_LIBRARY
QAccessibleFactoryInterface *factory = qobject_cast<QAccessibleFactoryInterface*>(loader()->instance(cn));
if (factory) {
iface = factory->create(cn, object);
if (iface)
return iface;
}
#endif
mo = mo->superClass();
}
if (!iface) {
if (object == qApp)
iface = new QAccessibleApplication;
}
return iface;
}
