// ===========================================================================
// 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.
// ===========================================================================
global proc increaseTraversalDepth(string $editor)
{
	// get the previous depth
	int $depth =`hyperGraph -q -limitGraphTraversal $editor`;
	hyperGraph -e -limitGraphTraversal ($depth + 1) $editor;
	
	// refresh the view
	showDGLevel $editor;
}

global proc decreaseTraversalDepth(string $editor)
{
	// get the previous depth
	int $depth =`hyperGraph -q -limitGraphTraversal $editor`;
	
	$depth -= 1;	
	hyperGraph -e -limitGraphTraversal $depth $editor;
	
	// refresh the view
	showDGLevel $editor;
}

global proc hyperGraphDepthControl(int $direction)
{
	// determine which panel is in focus
	string $focusedPanel = `getPanel -withFocus`;
	if ((`scriptedPanel -exists $focusedPanel`) &&
		(`scriptedPanel -q -type $focusedPanel` == "hyperGraphPanel"))
	{
		// create the editor widget's name
		string $hyperGraphEditorWidget = $focusedPanel + "HyperGraphEd";
		
		if ($direction < 0)
		{
			// decrease the traversal depth	
			decreaseTraversalDepth($hyperGraphEditorWidget);
		}
		else
		{
			// increase the traversal depth
			increaseTraversalDepth($hyperGraphEditorWidget);
		}
	}
}