STDMETHODIMP EvcSolverPropPage::Applies(VARIANT unkArray, VARIANT_BOOL* pApplies)
{
if (!pApplies) return E_INVALIDARG;
(*pApplies) = VARIANT_FALSE;
if (V_VT(&unkArray) != (VT_ARRAY|VT_UNKNOWN)) return E_INVALIDARG;
// Retrieve the safe array and retrieve the data
SAFEARRAY *saArray = unkArray.parray;
HRESULT hr = ::SafeArrayLock(saArray);
IUnknownPtr *pUnk;
hr = ::SafeArrayAccessData(saArray,reinterpret_cast<void**> (&pUnk));
if (FAILED(hr)) return hr;
// Loop through the elements and see if an NALayer with a valid IEvcSolver is present
long lNumElements = saArray->rgsabound->cElements;
for (long i = 0; i < lNumElements; i++)
{
INALayerPtr ipNALayer(pUnk[i]);
if (!ipNALayer) continue;
VARIANT_BOOL isValid;
INetworkDatasetPtr ipNetworkDataset;
IDEDatasetPtr ipDEDataset;
IDENetworkDatasetPtr ipDENet;
INASolverPtr ipSolver;
INAContextPtr ipNAContext;
ipNALayer->get_Context(&ipNAContext);
if (!ipNAContext) continue;
ipNAContext->get_Solver(&ipSolver);
if (!(IEvcSolverPtr)ipSolver) continue;
((ILayerPtr)ipNALayer)->get_Valid(&isValid);
if (isValid == VARIANT_FALSE) continue;
ipNAContext->get_NetworkDataset(&ipNetworkDataset);
if (!ipNetworkDataset) continue;
((IDatasetComponentPtr)ipNetworkDataset)->get_DataElement(&ipDEDataset);
ipDENet = ipDEDataset;
if (!ipDENet) continue;
(*pApplies) = VARIANT_TRUE;
break;
}
// Cleanup
hr = ::SafeArrayUnaccessData(saArray);
if (FAILED(hr)) return hr;
hr = ::SafeArrayUnlock(saArray);
if (FAILED(hr)) return hr;
return S_OK;
}
STDMETHODIMP ConnSolverPropPage::SetObjects(ULONG nObjects, IUnknown** ppUnk)
{
m_ipNALayer = 0;
m_ipConnectivitySolver = 0;
m_ipDENet = 0;
// Loop through the objects to find one that supports
// the INALayer interface.
for (ULONG i=0; i < nObjects; i ++)
{
INALayerPtr ipNALayer(ppUnk[i]);
if (!ipNALayer)
continue;
VARIANT_BOOL isValid;
INetworkDatasetPtr ipNetworkDataset;
IDEDatasetPtr ipDEDataset;
IDENetworkDatasetPtr ipDENet;
INASolverPtr ipSolver;
INAContextPtr ipNAContext;
ipNALayer->get_Context(&ipNAContext);
if (!ipNAContext)
continue;
ipNAContext->get_Solver(&ipSolver);
if (!(IConnectivitySolverPtr)ipSolver)
continue;
((ILayerPtr)ipNALayer)->get_Valid(&isValid);
if (isValid == VARIANT_FALSE)
continue;
ipNAContext->get_NetworkDataset(&ipNetworkDataset);
if (!ipNetworkDataset)
continue;
((IDatasetComponentPtr)ipNetworkDataset)->get_DataElement(&ipDEDataset);
ipDENet = ipDEDataset;
if (!ipDENet)
continue;
m_ipNALayer = ipNALayer;
m_ipConnectivitySolver = ipSolver;
m_ipDENet = ipDENet;
}
// Let the IPropertyPageImpl know what objects we have
return IPropertyPageImpl<ConnSolverPropPage>::SetObjects(nObjects, ppUnk);
}