Method Set

cpp/src/value_classes/Value.cpp:342–398

----------------------------------------------------------------------------- Set a new value in the device -----------------------------------------------------------------------------

// Set a new value in the device
//-----------------------------------------------------------------------------
bool Value::Set
(
)
{
	// nothing to do if this is a read-only value (return false to indicate an error)
	if( IsReadOnly() )
	{
		return false;
	}

	// retrieve the driver, node and commandclass object for this value
	bool res = false;
	Node* node = NULL;
	if( Driver* driver = Manager::Get()->GetDriver( m_id.GetHomeId() ) )
	{
		node = driver->GetNodeUnsafe( m_id.GetNodeId() );
		if( node != NULL )
		{
			if( CommandClass* cc = node->GetCommandClass( m_id.GetCommandClassId() ) )
			{
				Log::Write(LogLevel_Info, m_id.GetNodeId(), "Value::Set - %s - %s - %d - %d - %s", cc->GetCommandClassName().c_str(), this->GetLabel().c_str(), m_id.GetIndex(), m_id.GetInstance(), this->GetAsString().c_str());
				// flag value as set and queue a "Set Value" message for transmission to the device
				res = cc->SetValue( *this );

				if( res )
				{
					if( !IsWriteOnly() )
					{
						// queue a "RequestValue" message to update the value
						cc->RequestValue( 0, m_id.GetIndex(), m_id.GetInstance(), Driver::MsgQueue_Send );
					}
					else
					{
						// There is a "bug" here in that write only values
						// never send a notification about the value changing.
						// For sleeping devices it may not change until the
						// device wakes up at some point in the future.
						// So when is the right time to change it?
						if( m_affectsAll )
						{
							node->RequestAllConfigParams( 0 );
						}
						else if( m_affectsLength > 0 )
						{
							for( int i = 0; i < m_affectsLength; i++ )
							{
								node->RequestConfigParam( m_affects[i] );
							}
						}
					}
				}
			}
		}
	}

	return res;
}