/*
 * Copyright 2002-2005 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * XSEC
 *
 * TXFMBase := Base (virtual) class that defines a DSIG Transformer
 * Given this is a pure virtual class, this file only implements friend functions
 *
 * Author(s): Berin Lautenbach
 *
 * $Id$
 *
 */

#include <xsec/transformers/TXFMBase.hpp>
#include <xsec/framework/XSECError.hpp>

// -----------------------------------------------------------------------
//  Ensure name spaces are reset when this is destroyed
// -----------------------------------------------------------------------

TXFMBase::~TXFMBase() {

	if (mp_nse != NULL) {

		mp_nse->deleteAddedNamespaces();
		delete mp_nse;
		mp_nse = NULL;

	}

}


// -----------------------------------------------------------------------
//  For expanding name spaces when necessary
// -----------------------------------------------------------------------

bool TXFMBase::nameSpacesExpanded(void) {

	if (mp_nse != NULL)
		return true;

	if (input != NULL)
		return input->nameSpacesExpanded();

	return false;

}

void TXFMBase::expandNameSpaces(void) {

	if (mp_nse != NULL || (input != NULL && input->nameSpacesExpanded()))
		return;		// Already done
	
	XSECnew(mp_nse, XSECNameSpaceExpander(mp_expansionDoc));

	mp_nse->expandNameSpaces();

}

void TXFMBase::deleteExpandedNameSpaces(void) {

	if (mp_nse != NULL) {

		mp_nse->deleteAddedNamespaces();
		delete mp_nse;
		mp_nse = NULL;

	}

	if (input != NULL)
		input->deleteExpandedNameSpaces();

}		

void TXFMBase::activateComments(void) {

	if (input  != NULL) {

		// Only activate them if our input had them

		keepComments = input->keepComments;

	}

	else 
		
		keepComments = true;

}