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veraPDF PDF/A validation model implementation based on PDF parser.
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/**
 * 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.arlington;

import org.verapdf.cos.*;
import org.verapdf.model.alayer.*;
import org.verapdf.gf.model.impl.containers.StaticContainers;
import org.verapdf.tools.StaticResources;
import java.util.*;
import org.verapdf.pd.PDNameTreeNode;
import org.verapdf.as.ASAtom;
import java.util.stream.Collectors;
import org.verapdf.pd.structure.PDNumberTreeNode;

public class GFAAlternateImage extends GFAObject implements AAlternateImage {

	public GFAAlternateImage(COSBase baseObject, COSBase parentObject, String keyName) {
		super(baseObject, parentObject, keyName, "AAlternateImage");
	}

	@Override
	public List getLinkedObjects(String link) {
		switch (link) {
			case "Image":
				return getImage();
			case "OC":
				return getOC();
			default:
				return super.getLinkedObjects(link);
		}
	}

	private List getImage() {
		switch (StaticContainers.getFlavour()) {
			case ARLINGTON1_3:
			case ARLINGTON1_4:
			case ARLINGTON1_5:
			case ARLINGTON1_6:
			case ARLINGTON1_7:
			case ARLINGTON2_0:
				return getImage1_3();
			default:
				return Collections.emptyList();
		}
	}

	private List getImage1_3() {
		COSObject object = getImageValue();
		if (object == null) {
			return Collections.emptyList();
		}
		if (object.getType() == COSObjType.COS_STREAM) {
			List list = new ArrayList<>(1);
			list.add(new GFAXObjectImage((COSStream)object.getDirectBase(), this.baseObject, "Image"));
			return Collections.unmodifiableList(list);
		}
		return Collections.emptyList();
	}

	private List getOC() {
		switch (StaticContainers.getFlavour()) {
			case ARLINGTON1_5:
			case ARLINGTON1_6:
			case ARLINGTON1_7:
			case ARLINGTON2_0:
				return getOC1_5();
			default:
				return Collections.emptyList();
		}
	}

	private List getOC1_5() {
		COSObject object = getOCValue();
		if (object == null) {
			return Collections.emptyList();
		}
		if (object.getType() == COSObjType.COS_DICT) {
			org.verapdf.model.baselayer.Object result = getOCDictionary1_5(object.getDirectBase(), "OC");
			List list = new ArrayList<>(1);
			if (result != null) {
				list.add(result);
			}
			return Collections.unmodifiableList(list);
		}
		return Collections.emptyList();
	}

	private org.verapdf.model.baselayer.Object getOCDictionary1_5(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Type"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return null;
		}
		switch (subtypeValue) {
			case "OCG":
				return new GFAOptContentGroup(base, this.baseObject, keyName);
			case "OCMD":
				return new GFAOptContentMembership(base, this.baseObject, keyName);
			default:
				return null;
		}
	}

	@Override
	public Boolean getcontainsDefaultForPrinting() {
		return this.baseObject.knownKey(ASAtom.getASAtom("DefaultForPrinting"));
	}

	public COSObject getDefaultForPrintingDefaultValue() {
		switch (StaticContainers.getFlavour()) {
			case ARLINGTON1_3:
			case ARLINGTON1_4:
			case ARLINGTON1_5:
			case ARLINGTON1_6:
			case ARLINGTON1_7:
			case ARLINGTON2_0:
				return COSBoolean.construct(false);
		}
		return null;
	}

	public COSObject getDefaultForPrintingValue() {
		COSObject object = this.baseObject.getKey(ASAtom.getASAtom("DefaultForPrinting"));
		if (object == null || object.empty()) {
			object = getDefaultForPrintingDefaultValue();
		}
		return object;
	}

	@Override
	public String getDefaultForPrintingType() {
		COSObject DefaultForPrinting = getDefaultForPrintingValue();
		return getObjectType(DefaultForPrinting);
	}

	@Override
	public Boolean getDefaultForPrintingHasTypeBoolean() {
		COSObject DefaultForPrinting = getDefaultForPrintingValue();
		return getHasTypeBoolean(DefaultForPrinting);
	}

	@Override
	public Boolean getcontainsImage() {
		return this.baseObject.knownKey(ASAtom.getASAtom("Image"));
	}

	public COSObject getImageValue() {
		COSObject object = this.baseObject.getKey(ASAtom.getASAtom("Image"));
		return object;
	}

	@Override
	public Boolean getisImageIndirect() {
		COSObject Image = getImageValue();
		return getisIndirect(Image);
	}

	@Override
	public String getImageType() {
		COSObject Image = getImageValue();
		return getObjectType(Image);
	}

	@Override
	public Boolean getImageHasTypeStream() {
		COSObject Image = getImageValue();
		return getHasTypeStream(Image);
	}

	@Override
	public Boolean getcontainsOC() {
		return this.baseObject.knownKey(ASAtom.getASAtom("OC"));
	}

	public COSObject getOCValue() {
		COSObject object = this.baseObject.getKey(ASAtom.getASAtom("OC"));
		return object;
	}

	@Override
	public String getOCType() {
		COSObject OC = getOCValue();
		return getObjectType(OC);
	}

	@Override
	public Boolean getOCHasTypeDictionary() {
		COSObject OC = getOCValue();
		return getHasTypeDictionary(OC);
	}

}