argeo/docbook/DbkUtils.java

   1 package org.argeo.docbook;
   2
   3 import javax.jcr.Node;
   4 import javax.jcr.NodeIterator;
   5 import javax.jcr.RepositoryException;
   6 import javax.jcr.nodetype.NodeType;
   7
   8 import org.argeo.docbook.ui.DocBookNames;
   9 import org.argeo.docbook.ui.DocBookTypes;
  10 import org.argeo.entity.EntityNames;
  11 import org.argeo.entity.EntityType;
  12 import org.argeo.jcr.Jcr;
  13 import org.argeo.jcr.JcrException;
  14 import org.argeo.jcr.JcrUtils;
  15 import org.argeo.jcr.JcrxApi;
  16
  17 /** Utilities around DocBook. */
  18 public class DbkUtils {
  19         public static String getTitle(Node node) {
  20                 return JcrxApi.getXmlValue(node, DocBookTypes.TITLE);
  21         }
  22
  23         public static void setTitle(Node node, String txt) {
  24                 try {
  25                         Node titleNode = JcrUtils.getOrAdd(node, DocBookTypes.TITLE, DocBookTypes.TITLE);
  26                         JcrxApi.setXmlValue(node, titleNode, txt);
  27                 } catch (RepositoryException e) {
  28                         throw new JcrException("Cannot add empty paragraph to " + node, e);
  29                 }
  30         }
  31
  32         public static Node getMetadata(Node infoContainer) {
  33                 try {
  34                         if (!infoContainer.hasNode(DocBookTypes.INFO))
  35                                 return null;
  36                         Node info = infoContainer.getNode(DocBookTypes.INFO);
  37                         if (!info.hasNode(EntityType.local.get()))
  38                                 return null;
  39                         return info.getNode(EntityType.local.get());
  40                 } catch (RepositoryException e) {
  41                         throw new JcrException("Cannot retrieve metadata from " + infoContainer, e);
  42                 }
  43         }
  44
  45         public static Node getChildByRole(Node parent, String role) {
  46                 try {
  47                         NodeIterator baseSections = parent.getNodes();
  48                         while (baseSections.hasNext()) {
  49                                 Node n = baseSections.nextNode();
  50                                 String r = Jcr.get(n, DocBookNames.DBK_ROLE);
  51                                 if (r != null && r.equals(role))
  52                                         return n;
  53                         }
  54                         return null;
  55                 } catch (RepositoryException e) {
  56                         throw new JcrException("Cannot get child from " + parent + " with role " + role, e);
  57                 }
  58         }
  59
  60         public static Node addParagraph(Node node, String txt) {
  61                 try {
  62                         Node para = node.addNode(DocBookTypes.PARA, DocBookTypes.PARA);
  63                         JcrxApi.setXmlValue(node, para, txt);
  64                         return para;
  65                 } catch (RepositoryException e) {
  66                         throw new JcrException("Cannot add empty paragraph to " + node, e);
  67                 }
  68         }
  69
  70         public static Node insertImageAfter(Node sibling) {
  71                 try {
  72                         Node parent = sibling.getParent();
  73                         Node mediaNode = parent.addNode(DocBookTypes.MEDIAOBJECT, DocBookTypes.MEDIAOBJECT);
  74                         // TODO optimise?
  75                         parent.orderBefore(mediaNode.getName() + "[" + mediaNode.getIndex() + "]",
  76                                         sibling.getName() + "[" + sibling.getIndex() + "]");
  77                         parent.orderBefore(sibling.getName() + "[" + sibling.getIndex() + "]",
  78                                         mediaNode.getName() + "[" + mediaNode.getIndex() + "]");
  79
  80                         Node imageNode = mediaNode.addNode(DocBookTypes.IMAGEOBJECT, DocBookTypes.IMAGEOBJECT);
  81                         Node infoNode = imageNode.addNode(DocBookTypes.INFO, DocBookTypes.INFO);
  82                         Node imageDataNode = JcrUtils.copyBytesAsFile(infoNode, EntityType.box.get(), new byte[0]);
  83                         imageDataNode.addMixin(EntityType.box.get());
  84                         imageDataNode.setProperty(EntityNames.SVG_WIDTH, 0);
  85                         imageDataNode.setProperty(EntityNames.SVG_LENGTH, 0);
  86                         imageDataNode.addMixin(NodeType.MIX_MIMETYPE);
  87                         return imageDataNode;
  88                 } catch (RepositoryException e) {
  89                         throw new JcrException("Cannot insert empty image after " + sibling, e);
  90                 }
  91         }
  92
  93         /** Singleton. */
  94         private DbkUtils() {
  95         }
  96 }