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Merge pull request #594 from veraPDF/struct_tree_node
Add GFPDStructTreeNode
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validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDStructTreeNode.java
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| /** | ||
| * This file is part of veraPDF Validation, a module of the veraPDF project. | ||
| * Copyright (c) 2015, veraPDF Consortium <[email protected]> | ||
| * 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.pd; | ||
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| import org.verapdf.as.ASAtom; | ||
| import org.verapdf.cos.*; | ||
| import org.verapdf.gf.model.impl.containers.StaticContainers; | ||
| import org.verapdf.gf.model.impl.pd.gfse.GFSEFactory; | ||
| import org.verapdf.model.baselayer.Object; | ||
| import org.verapdf.model.pdlayer.PDStructTreeNode; | ||
| import org.verapdf.pdfa.flavours.PDFAFlavour; | ||
| import org.verapdf.tools.TaggedPDFConstants; | ||
| import org.verapdf.tools.TaggedPDFHelper; | ||
|
|
||
| import java.util.*; | ||
| import java.util.stream.Collectors; | ||
|
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| /** | ||
| * @author Maxim Plushchov | ||
| */ | ||
| public abstract class GFPDStructTreeNode extends GFPDObject implements PDStructTreeNode { | ||
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| /** | ||
| * Link name for {@code K} key | ||
| */ | ||
| public static final String CHILDREN = "K"; | ||
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| private List<GFPDStructElem> children; | ||
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| protected GFPDStructTreeNode(org.verapdf.pd.structure.PDStructTreeNode structTreeNodeDictionary, String type) { | ||
| super(structTreeNodeDictionary, type); | ||
| } | ||
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| @Override | ||
| public String getkidsStandardTypes() { | ||
| if (StaticContainers.getFlavour() != null && | ||
| StaticContainers.getFlavour().getPart() == PDFAFlavour.Specification.WCAG_2_1) { | ||
| return this.getChildrenStandardTypes() | ||
| .stream() | ||
| .filter(type -> type != null && !TaggedPDFConstants.ARTIFACT.equals(type)) | ||
| .collect(Collectors.joining("&")); | ||
| } | ||
| return this.getChildrenStandardTypes() | ||
| .stream() | ||
| .filter(Objects::nonNull) | ||
| .collect(Collectors.joining("&")); | ||
| } | ||
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| @Override | ||
| public Boolean gethasContentItems() { | ||
| COSObject children = this.simplePDObject.getKey(ASAtom.K); | ||
| if (children == null) { | ||
| return false; | ||
| } | ||
| if (TaggedPDFHelper.isContentItem(children)) { | ||
| return true; | ||
| } | ||
| if (children.getType() == COSObjType.COS_ARRAY) { | ||
| for (COSObject elem : (COSArray)children.getDirectBase()) { | ||
| if (TaggedPDFHelper.isContentItem(elem)) { | ||
| return true; | ||
| } | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
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| @Override | ||
| public List<? extends Object> getLinkedObjects(String link) { | ||
| switch (link) { | ||
| case CHILDREN: | ||
| return this.getChildren(); | ||
| default: | ||
| return super.getLinkedObjects(link); | ||
| } | ||
| } | ||
|
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| public List<String> getChildrenStandardTypes() { | ||
| return getChildrenStandardTypes(this); | ||
| } | ||
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| private static List<String> getChildrenStandardTypes(GFPDStructTreeNode element) { | ||
| List<String> res = new ArrayList<>(); | ||
| for (GFPDStructElem child : element.getChildren()) { | ||
| String elementStandardType = child.getstandardType(); | ||
| if (TaggedPDFConstants.NON_STRUCT.equals(elementStandardType) || TaggedPDFConstants.DIV.equals(elementStandardType)) { | ||
| res.addAll(getChildrenStandardTypes(child)); | ||
| } else { | ||
| res.add(elementStandardType); | ||
| } | ||
| } | ||
| return Collections.unmodifiableList(res); | ||
| } | ||
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| public List<GFPDStructElem> getChildren() { | ||
| if (children == null) { | ||
| List<org.verapdf.pd.structure.PDStructElem> elements = ((org.verapdf.pd.structure.PDStructElem) simplePDObject).getStructChildren(); | ||
| if (!elements.isEmpty()) { | ||
| List<GFPDStructElem> res = new ArrayList<>(elements.size()); | ||
| for (org.verapdf.pd.structure.PDStructElem element : elements) { | ||
| res.add(GFSEFactory.createTypedStructElem(element)); | ||
| } | ||
| children = Collections.unmodifiableList(res); | ||
| } else { | ||
| children = Collections.emptyList(); | ||
| } | ||
| } | ||
| return children; | ||
| } | ||
| } |
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