void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
{
wxWindow *parent = m_winParent->GetParent();
// the event is propagated downwards if the event emitter was our parent
bool goingDown = event.GetEventObject() == parent;
const wxWindowList& children = m_winParent->GetChildren();
// if we have exactly one notebook-like child window (actually it could be
// any window that returns true from its HasMultiplePages()), then
// [Shift-]Ctrl-Tab and Ctrl-PageUp/Down keys should iterate over its pages
// even if the focus is outside of the control because this is how the
// standard MSW properties dialogs behave and we do it under other platforms
// as well because it seems like a good idea -- but we can always put this
// block inside "#ifdef __WXMSW__" if it's not suitable there
if ( event.IsWindowChange() && !goingDown )
{
// check if we have a unique notebook-like child
wxWindow *bookctrl = NULL;
for ( wxWindowList::const_iterator i = children.begin(),
end = children.end();
i != end;
++i )
{
wxWindow * const window = *i;
if ( window->HasMultiplePages() )
{
if ( bookctrl )
{
// this is the second book-like control already so don't do
// anything as we don't know which one should have its page
// changed
bookctrl = NULL;
break;
}
bookctrl = window;
}
}
if ( bookctrl )
{
// make sure that we don't bubble up the event again from the book
// control resulting in infinite recursion
wxNavigationKeyEvent eventCopy(event);
eventCopy.SetEventObject(m_winParent);
if ( bookctrl->GetEventHandler()->ProcessEvent(eventCopy) )
return;
}
}
// there is not much to do if we don't have children and we're not
// interested in "notebook page change" events here
if ( !children.GetCount() || event.IsWindowChange() )
{
// let the parent process it unless it already comes from our parent
// of we don't have any
if ( goingDown ||
!parent || !parent->GetEventHandler()->ProcessEvent(event) )
{
event.Skip();
}
return;
}
// where are we going?
const bool forward = event.GetDirection();
// the node of the children list from which we should start looking for the
// next acceptable child
wxWindowList::compatibility_iterator node, start_node;
// we should start from the first/last control and not from the one which
// had focus the last time if we're propagating the event downwards because
// for our parent we look like a single control
if ( goingDown )
{
// just to be sure it's not used (normally this is not necessary, but
// doesn't hurt neither)
m_winLastFocused = (wxWindow *)NULL;
// start from first or last depending on where we're going
node = forward ? children.GetFirst() : children.GetLast();
}
else // going up
{
// try to find the child which has the focus currently
// the event emitter might have done this for us
wxWindow *winFocus = event.GetCurrentFocus();
// but if not, we might know where the focus was ourselves
if (!winFocus)
winFocus = m_winLastFocused;
// if still no luck, do it the hard way
if (!winFocus)
winFocus = wxWindow::FindFocus();
if ( winFocus )
{
#ifdef __WXMSW__
// If we are in a radio button group, start from the first item in the
// group
if ( event.IsFromTab() && wxIsKindOf(winFocus, wxRadioButton ) )
winFocus = wxGetFirstButtonInGroup((wxRadioButton*)winFocus);
#endif
// ok, we found the focus - now is it our child?
start_node = children.Find( winFocus );
}
if ( !start_node && m_winLastFocused )
{
// window which has focus isn't our child, fall back to the one
// which had the focus the last time
start_node = children.Find( m_winLastFocused );
}
// if we still didn't find anything, we should start with the first one
if ( !start_node )
{
start_node = children.GetFirst();
}
// and the first child which we can try setting focus to is the next or
// the previous one
node = forward ? start_node->GetNext() : start_node->GetPrevious();
}
// we want to cycle over all elements passing by NULL
for ( ;; )
{
// don't go into infinite loop
if ( start_node && node && node == start_node )
break;
// Have we come to the last or first item on the panel?
if ( !node )
{
if ( !start_node )
{
// exit now as otherwise we'd loop forever
break;
}
if ( !goingDown )
{
// Check if our (maybe grand) parent is another panel: if this
// is the case, they will know what to do with this navigation
// key and so give them the chance to process it instead of
// looping inside this panel (normally, the focus will go to
// the next/previous item after this panel in the parent
// panel).
wxWindow *focussed_child_of_parent = m_winParent;
while ( parent )
{
// we don't want to tab into a different dialog or frame
if ( focussed_child_of_parent->IsTopLevel() )
break;
event.SetCurrentFocus( focussed_child_of_parent );
if ( parent->GetEventHandler()->ProcessEvent( event ) )
return;
focussed_child_of_parent = parent;
parent = parent->GetParent();
}
}
//else: as the focus came from our parent, we definitely don't want
// to send it back to it!
// no, we are not inside another panel so process this ourself
node = forward ? children.GetFirst() : children.GetLast();
continue;
}
wxWindow *child = node->GetData();
#ifdef __WXMSW__
if ( event.IsFromTab() )
{
if ( wxIsKindOf(child, wxRadioButton) )
{
// only radio buttons with either wxRB_GROUP or wxRB_SINGLE
// can be tabbed to
if ( child->HasFlag(wxRB_GROUP) )
{
// need to tab into the active button within a group
wxRadioButton *rb = wxGetSelectedButtonInGroup((wxRadioButton*)child);
if ( rb )
child = rb;
}
else if ( !child->HasFlag(wxRB_SINGLE) )
{
node = forward ? node->GetNext() : node->GetPrevious();
continue;
}
}
}
else if ( m_winLastFocused &&
wxIsKindOf(m_winLastFocused, wxRadioButton) &&
!m_winLastFocused->HasFlag(wxRB_SINGLE) )
{
// cursor keys don't navigate out of a radio button group so
// find the correct radio button to focus
if ( forward )
{
child = wxGetNextButtonInGroup((wxRadioButton*)m_winLastFocused);
if ( !child )
{
// no next button in group, set it to the first button
child = wxGetFirstButtonInGroup((wxRadioButton*)m_winLastFocused);
}
}
else
{
child = wxGetPreviousButtonInGroup((wxRadioButton*)m_winLastFocused);
if ( !child )
{
// no previous button in group, set it to the last button
child = wxGetLastButtonInGroup((wxRadioButton*)m_winLastFocused);
}
}
if ( child == m_winLastFocused )
{
// must be a group consisting of only one button therefore
// no need to send a navigation event
event.Skip(false);
return;
}
}
#endif // __WXMSW__
if ( child->AcceptsFocusFromKeyboard() )
{
// if we're setting the focus to a child panel we should prevent it
// from giving it to the child which had the focus the last time
// and instead give it to the first/last child depending from which
// direction we're coming
event.SetEventObject(m_winParent);
// disable propagation for this call as otherwise the event might
// bounce back to us.
wxPropagationDisabler disableProp(event);
if ( !child->GetEventHandler()->ProcessEvent(event) )
{
// set it first in case SetFocusFromKbd() results in focus
// change too
m_winLastFocused = child;
// everything is simple: just give focus to it
child->SetFocusFromKbd();
}
//else: the child manages its focus itself
event.Skip( false );
return;
}
node = forward ? node->GetNext() : node->GetPrevious();
}
// we cycled through all of our children and none of them wanted to accept
// focus
event.Skip();
}
void SCXMLIOProcessor::eventFromSCXML(const std::string& target, const Event& event) {
// see http://www.w3.org/TR/scxml/#SendTargets
Event eventCopy(event);
// test 253 / 198 / 336
eventCopy.origintype = "http://www.w3.org/TR/scxml/#SCXMLEventProcessor";
// test 336
eventCopy.origin = "#_scxml_" + _interpreter->getSessionId();
if (false) {
} else if(target.length() == 0) {
/**
* If neither the 'target' nor the 'targetexpr' attribute is specified, the
* SCXML Processor must add the event will be added to the external event
* queue of the sending session.
*/
// test333 vs test351
// reqCopy.sendid = "";
// test 198
_interpreter->enqueueExternal(eventCopy);
} else if (iequals(target, "#_internal")) {
/**
* #_internal: If the target is the special term '#_internal', the Processor
* must add the event to the internal event queue of the sending session.
*/
_interpreter->enqueueInternal(eventCopy);
} else if (iequals(target, "#_parent")) {
/**
* #_parent: If the target is the special term '#_parent', the Processor must
* add the event to the external event queue of the SCXML session that invoked
* the sending session, if there is one.
*/
if (_interpreter->_parentQueue) {
_interpreter->_parentQueue.enqueue(eventCopy);
} else {
ERROR_COMMUNICATION_THROW("Sending to parent invoker, but none is set");
}
} else if (target.length() > 8 && iequals(target.substr(0, 8), "#_scxml_")) {
/**
* #_scxml_sessionid: If the target is the special term '#_scxml_sessionid',
* where sessionid is the id of an SCXML session that is accessible to the
* Processor, the Processor must add the event to the external queue of that
* session. The set of SCXML sessions that are accessible to a given SCXML
* Processor is platform-dependent.
*/
std::string sessionId = target.substr(8);
std::lock_guard<std::recursive_mutex> lock(_interpreter->_instanceMutex);
std::map<std::string, std::weak_ptr<InterpreterImpl> > instances = InterpreterImpl::getInstances();
if (instances.find(sessionId) != instances.end()) {
std::shared_ptr<InterpreterImpl> otherSession = instances[sessionId].lock();
if (otherSession) {
otherSession->enqueueExternal(eventCopy);
} else {
ERROR_COMMUNICATION_THROW("Can not send to scxml session " + sessionId + " - not known");
}
} else {
ERROR_COMMUNICATION_THROW("Invalid target scxml session for send");
}
} else if (target.length() > 2 && iequals(target.substr(0, 2), "#_")) {
/**
* #_invokeid: If the target is the special term '#_invokeid', where invokeid
* is the invokeid of an SCXML session that the sending session has created
* by <invoke>, the Processor must add the event to the external queue of that
* session.
*/
std::string invokeId = target.substr(2);
if (_interpreter->_invokers.find(invokeId) != _interpreter->_invokers.end()) {
std::lock_guard<std::recursive_mutex> lock(_interpreter->_instanceMutex);
try {
_interpreter->_invokers[invokeId].eventFromSCXML(eventCopy);
} catch(Event e) {
// Is this the right thing to do?
// _interpreter->enqueueExternal(eventCopy);
} catch (const std::exception &e) {
ERROR_COMMUNICATION_THROW("Exception caught while sending event to invoker '" + invokeId + "': " + e.what());
} catch(...) {
ERROR_COMMUNICATION_THROW("Exception caught while sending event to invoker '" + invokeId + "'");
}
} else {
ERROR_COMMUNICATION_THROW("Can not send to invoked component '" + invokeId + "', no such invokeId");
}
} else {
ERROR_COMMUNICATION_THROW("Not sure what to make of the target '" + target + "' - raising error");
}
}
