org.verapdf.gf.model.impl.cos.GFCosObject Maven / Gradle / Ivy
/**
* This file is part of veraPDF Validation, a module of the veraPDF project.
* Copyright (c) 2015, veraPDF Consortium
* All rights reserved.
*
* veraPDF Validation is free software: you can redistribute it and/or modify
* it under the terms of either:
*
* The GNU General public license GPLv3+.
* You should have received a copy of the GNU General Public License
* along with veraPDF Validation as the LICENSE.GPL file in the root of the source
* tree. If not, see http://www.gnu.org/licenses/ or
* https://www.gnu.org/licenses/gpl-3.0.en.html.
*
* The Mozilla Public License MPLv2+.
* You should have received a copy of the Mozilla Public License along with
* veraPDF Validation as the LICENSE.MPL file in the root of the source tree.
* If a copy of the MPL was not distributed with this file, you can obtain one at
* http://mozilla.org/MPL/2.0/.
*/
package org.verapdf.gf.model.impl.cos;
import org.verapdf.cos.COSBase;
import org.verapdf.cos.COSDocument;
import org.verapdf.cos.COSIndirect;
import org.verapdf.gf.model.visitor.cos.pb.GFCosVisitor;
import org.verapdf.model.GenericModelObject;
import org.verapdf.model.coslayer.CosObject;
/**
* @author Timur Kamalov
*/
public class GFCosObject extends GenericModelObject implements CosObject {
public static final int MAX_NUMBER_OF_ELEMENTS = 1;
protected final COSDocument cosDocument;
protected final COSBase baseObject;
protected GFCosObject(final String type) {
super(type);
this.baseObject = null;
this.cosDocument = null;
}
protected GFCosObject(final COSBase baseObject, final String type) {
super(type);
this.baseObject = baseObject;
this.cosDocument = null;
}
protected GFCosObject(final COSDocument cosDocument, final String type) {
super(type);
this.baseObject = null;
this.cosDocument = cosDocument;
}
/**
* Transform object of pdf box to corresponding object of abstract model
* implementation. For transforming using {@code PBCosVisitor}.
*
* @param base
* @return object of abstract model implementation, transformed from
* {@code base}
*/
public static CosObject getFromValue(COSBase base) {
if (base != null) {
GFCosVisitor visitor = GFCosVisitor.getInstance();
if (base.isIndirect().booleanValue()) {
return (CosObject) GFCosVisitor.visitFromIndirect((COSIndirect) base);
}
return (CosObject) base.accept(visitor);
}
return null;
}
}