/*****************************************************************************
*
* Copyright (c) 2000 - 2010, Lawrence Livermore National Security, LLC
* Produced at the Lawrence Livermore National Laboratory
* LLNL-CODE-400124
* All rights reserved.
*
* This file is  part of VisIt. For  details, see https://visit.llnl.gov/.  The
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* of the VisIt distribution or at http://www.llnl.gov/visit/copyright.html.
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*****************************************************************************/

#include <SingleAttributeConfigManager.h>
#include <DataNode.h>
#include <DebugStream.h>
#include <Utility.h>
#include <visit-config.h>

// ****************************************************************************
// Method: SingleAttributeConfigManager::SingleAttributeConfigManager
//
// Purpose: 
//   Constructor for the SingleAttributeConfigManager class.
//
// Programmer: Jeremy Meredith
// Creation:   January  2, 2009
//
// Modifications:
//   Jeremy Meredith, Thu Apr 29 12:14:13 EDT 2010
//   Added ability to do a selective save.
//   
// ****************************************************************************

SingleAttributeConfigManager::SingleAttributeConfigManager(AttributeGroup *att)
{
    attribute = att;
    completeSave = false;
}

// ****************************************************************************
// Method: SingleAttributeConfigManager::~SingleAttributeConfigManager
//
// Purpose: 
//   Destructor for the SingleAttributeConfigManager class.
//
// Programmer: Jeremy Meredith
// Creation:   January  2, 2009
//
// Modifications:
//   
// ****************************************************************************

SingleAttributeConfigManager::~SingleAttributeConfigManager()
{
}

// ****************************************************************************
// Method: SingleAttributeConfigManager::Export
//
// Purpose: 
//   Exports the attribute to the named file.
//
// Returns:    true on success; false otherwise
//
// Programmer: Jeremy Meredith
// Creation:   January  2, 2009
//
// Modifications:
//   Jeremy Meredith, Thu Apr 29 12:14:13 EDT 2010
//   Added ability to do a selective save.
//
// ****************************************************************************

bool
SingleAttributeConfigManager::Export(const std::string &filename,
                                     bool complete)
{
    completeSave = complete;
    return WriteConfigFile(filename.c_str());
}

// ****************************************************************************
// Method: SingleAttributeConfigManager::Import
//
// Purpose: 
//   Imports the atribute from the named file.
//
// Returns:    true on success; false otherwise
//
// Programmer: Jeremy Meredith
// Creation:   January  2, 2009
//
// Modifications:
//
//   Tom Fogal, Fri Mar  6 10:26:12 MST 2009
//   Fix: function wasn't returning anything in the `success' case.
//   
// ****************************************************************************

bool
SingleAttributeConfigManager::Import(const std::string &filename)
{
    DataNode *node = ReadConfigFile(filename.c_str());

    if (!node)
        return false;

    attribute->SetFromNode(node);
    return true;
}

// ****************************************************************************
// Method: SingleAttributeConfigManager::WriteConfigFile
//
// Purpose: 
//   Writes the attribute to a file.
//
// Arguments:
//   filename : The name of the file to write.
//
// Programmer: Jeremy Meredith
// Creation:   January  2, 2009
//
// Modifications:
//   Jeremy Meredith, Thu Apr 29 12:14:13 EDT 2010
//   Added ability to do a selective save.
//
// ****************************************************************************

bool
SingleAttributeConfigManager::WriteConfigFile(const char *filename)
{
    // We need to start with a top-level container data node, but that's
    // not what we wind up saving; get the actual one from inside it.
    DataNode topLevel("topLevel");
    attribute->CreateNode(&topLevel, completeSave, true);
    DataNode *actualNode = topLevel.GetNode(attribute->TypeName());
    if (!actualNode)
        return false;

    // Try to open the output file.
    if((fp = fopen(filename, "wb")) == 0)
    {
        return false;
    }

    // Write the output file.
    fprintf(fp, "<?xml version=\"1.0\"?>\n");
    WriteObject(actualNode);

    // Close the file
    fclose(fp);
    fp = 0;

    return true;
}

// ****************************************************************************
// Method: SingleAttributeConfigManager::ReadConfigFile
//
// Purpose: 
//   Reads the attribute from a file.
//
// Arguments:
//   filename : The name of the file to open.
//
// Programmer: Jeremy Meredith
// Creation:   January  2, 2009
//
// Modifications:
//   
// ****************************************************************************

DataNode *
SingleAttributeConfigManager::ReadConfigFile(const char *filename)
{
    DataNode *node = 0;

    // Try and open the file for reading.
    if((fp = fopen(filename, "r")) == 0)
        return node;

    // Read the XML tag and ignore it.
    FinishTag();

    // Create a root node and use it to read the visit tree.
    node = new DataNode("FileRoot");
    ReadObject(node);

    fclose(fp);
    fp = 0;

    return node;
}