IFACEMETHODIMP CTriColorControlProvider::GetSelection(_Outptr_result_maybenull_ SAFEARRAY * *retVal)
{
*retVal = nullptr;
HRESULT hr = CheckDisconnected();
if (SUCCEEDED(hr))
{
TriColorValue controlValue;
hr = m_control->get_ControlValue(&controlValue);
if (SUCCEEDED(hr))
{
ComPtr<IInspectable> spFragmentProvider;
hr = m_control->GetTriColorFragmentProvider(controlValue, &spFragmentProvider);
if (SUCCEEDED(hr))
{
*retVal = SafeArrayCreateVector(VT_UNKNOWN, 0, 1);
if (*retVal != nullptr)
{
long index = 0;
hr = SafeArrayPutElement(*retVal, &index, spFragmentProvider.Get());
if (FAILED(hr))
{
SafeArrayDestroy(*retVal);
*retVal = nullptr;
}
}
else
{
hr = E_OUTOFMEMORY;
}
}
}
}
return hr;
}
STDMETHODIMP CTriColorFragmentProvider::get_IsSelected(_Out_ BOOL *retVal)
{
*retVal = FALSE;
HRESULT hr = CheckDisconnected();
if (SUCCEEDED(hr))
{
// Is this fragment already selected?
TriColorValue controlValue;
hr = m_control->get_ControlValue(&controlValue);
if (SUCCEEDED(hr))
{
*retVal = (controlValue == m_value);
}
}
return hr;
}
IFACEMETHODIMP CTriColorControlProvider::get_Value(_Out_ BSTR *retVal)
{
*retVal = nullptr;
HRESULT hr = CheckDisconnected();
if (SUCCEEDED(hr))
{
TriColorValue controlValue;
hr = m_control->get_ControlValue(&controlValue);
if (SUCCEEDED(hr))
{
hr = TriColorValueHelper::ValueToString(controlValue, retVal);
}
}
return hr;
}
STDMETHODIMP CTriColorFragmentProvider::RemoveFromSelection()
{
HRESULT hr = CheckDisconnected();
if (SUCCEEDED(hr))
{
// Is this fragment already selected?
TriColorValue controlValue;
hr = m_control->get_ControlValue(&controlValue);
if (SUCCEEDED(hr))
{
if (controlValue == m_value)
{
// Cannot do multiple selection
hr = UIA_E_INVALIDOPERATION;
}
else
{
// It's already unselected - operation succeeded.
hr = S_OK;
}
}
}
return hr;
}