by the way, it is possible to send a variable length arrays of type
other than string from client to server, the trick is to use the first
element to send the total number of elements sent. This will work with
state, but using a string is probably more robust against future PV
changes since this relies on undocumented functionality.
Your panel has a method like this:
//-----------------------------------------------------------------------------
void pqXXXPanel::accept()
{
//...
// The first element is expected to be the length
vector<int> meshIds(1,0);
//
// walk your Qt widget & push selected mesh ids on the vector
//
meshIds[0]=meshIds.size(); // set length
vtkSMIntVectorProperty *meshProp
= dynamic_cast<vtkSMIntVectorProperty
*>(dbbProxy->GetProperty("SetMeshIds"));
meshProp->SetNumberOfElements(meshIds.size());
meshProp->SetElements(&meshIds[0]);
meshProp->Modified();
dbbProxy->UpdateProperty("SetMeshIds");
//...
}
Your reader has a method like this:
//-----------------------------------------------------------------------------
void vtkXXXReader::SetMeshIds(int *ids)
{
const int n=ids[0];
if (n>1)
{
this->MeshIds.assign(ids+1,ids+n);
}
else
{
this->MeshIds.clear();
}
this->SetNumberOfMeshes(n-1);
this->Modified();
}
burlen wrote:
You don't necessarily need to do a lot of heavy coding.
One simple way to transfer variable length data such as the list of
selected zone ids from client to server is via a string vector
property. On the client side you will need a custom panel that handles
serialization of the list of zones into the string vector property. On
the server side parse the string during request data phase. A format
like:
"nZoneIds Zone1Id Zone2Id ... ZoneNId".
Would do the trick, and would be compatible with PV state.
Burlen
Paul Edwards wrote:
Hi,
I have a reader and would like to have a list box in the object panel
to select which zones to read in from the file. The number of zones
can change depending on the file. Does anyone have any suggestions
for how to do this? My ideas were:
* add a new vtkSM*Domain
o I don't think this is possible in a plugin because
pqSMAdaptor needs to be updated for any new class (is that
right?)
* create a custom panel and have one information only property to
get the number of zones and another property to set the zones
o would the set property need to be a string that I put
comma-separated zone indexes or is there a way to change
the number of elements in an integer vector?
Thanks in advance,
Paul
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