void ArpDocumentButton::MouseMoved(BPoint point, uint32 transit,
const BMessage* message)
{
BMessage* curMsg = Window()->CurrentMessage();
if( message ) {
// Only update button when drag enters or leaves the view.
if( transit != B_ENTERED_VIEW && transit != B_EXITED_VIEW ) return;
BMessenger source;
if( message->FindMessenger("ARP:source", &source) == B_OK ) {
if( source == BMessenger(this) ) return;
}
bool newDropped = false;
if( transit == B_ENTERED_VIEW ) {
// Is this a message we can handle?
bool control=false;
if( curMsg ) {
int32 modifiers=0;
curMsg->FindInt32("modifiers",&modifiers);
if( (modifiers&B_LEFT_CONTROL_KEY) != 0 ) control=true;
ArpD(cdb << ADH << "Drag entered view, ctrl=" << control
<< ", mouse move=" << *curMsg << endl);
}
if( control || GetDropRef(0,message) == B_OK
|| GetDropAction(0,message) == B_OK ) {
newDropped = true;
}
}
if( newDropped != mDropped ) {
ArpD(if( message ) cdb << "Dragged message: " << *message << endl);
mDropped = newDropped;
Invalidate();
}
}
//------------------------------------------------------------------------------
FReply FKismetFunctionDragDropAction::DroppedOnPanel(TSharedRef<SWidget> const& Panel, FVector2D ScreenPosition, FVector2D GraphPosition, UEdGraph& Graph)
{
FReply Reply = FReply::Unhandled();
// The ActionNode set during construction points to the Graph, this is suitable for displaying the mouse decorator but needs to be more complete based on the current graph
UBlueprintFunctionNodeSpawner* FunctionNodeSpawner = nullptr;
FunctionNodeSpawner = GetDropAction(Graph);
if (FunctionNodeSpawner)
{
FText CannotDropReason = FText::GetEmpty();
if (!CanBeDroppedDelegate.IsBound() || CanBeDroppedDelegate.Execute(nullptr, GetHoveredGraph(), CannotDropReason))
{
UFunction const* Function = GetFunctionProperty();
if ((Function != NULL) && UEdGraphSchema_K2::CanUserKismetCallFunction(Function))
{
AnalyticCallback.ExecuteIfBound();
IBlueprintNodeBinder::FBindingSet Bindings;
FunctionNodeSpawner->Invoke(&Graph, Bindings, GraphPosition);
Reply = FReply::Handled();
}
}
}
return Reply;
}
void ArpDocumentButton::MessageReceived(BMessage* message)
{
if( !message ) return;
ArpD(cdb << ADH << "ArpDocumentButton::MessageReceived: " << *message << endl);
if( message->WasDropped() ) {
ArpD(cdb << ADH << "This was a dropped message." << endl);
mDropped = false;
Invalidate();
switch( message->what ) {
case B_SIMPLE_DATA: {
entry_ref ref;
BMessage data;
if( GetDropRef(&ref, message, mDropped) == B_OK ) {
// Forward to target as an "open" action.
ArpD(cdb << ADH << "Sending to target as B_REFS_RECEIVED."
<< endl);
BMessage openMsg(*message);
openMsg.what = B_REFS_RECEIVED;
Invoke(&openMsg);
} else if( GetDropAction(&data, message, mDropped) == B_OK ) {
// Only if we are not the one who sent the message...
BMessenger source;
if( message->FindMessenger("ARP:source", &source) == B_OK ) {
if( source == BMessenger(this) ) return;
}
// Tell the sender what format we would like the data in, and
// have it send the final reply containing that data to our
// target.
ArpD(cdb << ADH << "Replying with desired action: " << data
<< endl);
message->SendReply(&data, Messenger());
}
} break;
default:
ArpD(cdb << ADH << "Not a drop I understand." << endl);
inherited::MessageReceived(message);
}
return;
}
// If this action is one of the allowed ones in our prototype, forward
// it to the target handler.
int32 action=0;
int i;
for( i=0; mDragPrototype.FindInt32("be:actions", i, &action)==B_OK; i++ ) {
if( static_cast<type_code>(action) == message->what ) {
ArpD(cdb << ADH << "Forwarding this action to target." << endl);
// Forward message on to target, making that target's reply
// go back to the originator.
InvokeReply(message);
//Messenger().SendMessage(message, message->ReturnAddress());
//Invoke(message);
return;
}
}
// Forward any other data received to the target. Using the official
// drag and drop protocol, this should never happen -- we redirect the
// data message directly to our target, when responding to the initial
// drop. However, just in case, we also catch data messages here.
if( message->what == B_MIME_DATA ) {
ArpD(cdb << ADH << "Forwarding this data to target." << endl);
InvokeReply(message);
return;
}
ArpD(cdb << ADH << "Not a message I understand." << endl);
inherited::MessageReceived(message);
}