// ===========================================================================
// Copyright 2018 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk license
// agreement provided at the time of installation or download, or which
// otherwise accompanies this software in either electronic or hard copy form.
// ===========================================================================
// Description:
//  This procedure is for making current render layer label.
//  If the only render layer existing is the master layer, 
//  then we do not need to have a label, so we return "".
//  If non master render layer exists, then we return
//  the name of the current render layer for labelling purposes.
//
global proc string currentRenderLayerLabel()
{
	// If there is no renderLayerManager, return the empty string
	//
	if( size(`ls -type renderLayerManager`) == 0 ){
		return "";
	}
    // If there exists non master render layer,
    // update the render setting window's title to show the
    // current layer number.
    //
    string $layerArray[] = `listConnections renderLayerManager.renderLayerId`;

    if (size($layerArray)==1 && `getAttr ($layerArray[0]+".identification")` == 0)
    {
        // The master render layer is the only render layer.
        // Do not show render layer name in the window title.
        //
        return "";
    }

     
    string $currentRenderLayer = `editRenderLayerGlobals -query -currentRenderLayer`;
    return renderLayerDisplayName($currentRenderLayer);
}