Support for docbook image object.

[gpl/argeo-suite.git] / publishing / org.argeo.publishing.ui / src / org / argeo / docbook / DbkUtils.java

diff --git a/publishing/org.argeo.publishing.ui/src/org/argeo/docbook/DbkUtils.java b/publishing/org.argeo.publishing.ui/src/org/argeo/docbook/DbkUtils.java
new file mode 100644 (file)
index 0000000..6a8da8e
--- /dev/null
+++ b/publishing/org.argeo.publishing.ui/src/org/argeo/docbook/DbkUtils.java
@@ -0,0 +1,96 @@
+package org.argeo.docbook;
+
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.RepositoryException;
+import javax.jcr.nodetype.NodeType;
+
+import org.argeo.docbook.ui.DocBookNames;
+import org.argeo.docbook.ui.DocBookTypes;
+import org.argeo.entity.EntityNames;
+import org.argeo.entity.EntityType;
+import org.argeo.jcr.Jcr;
+import org.argeo.jcr.JcrException;
+import org.argeo.jcr.JcrUtils;
+import org.argeo.jcr.JcrxApi;
+
+/** Utilities around DocBook. */
+public class DbkUtils {
+       public static String getTitle(Node node) {
+               return JcrxApi.getXmlValue(node, DocBookTypes.TITLE);
+       }
+
+       public static void setTitle(Node node, String txt) {
+               try {
+                       Node titleNode = JcrUtils.getOrAdd(node, DocBookTypes.TITLE, DocBookTypes.TITLE);
+                       JcrxApi.setXmlValue(node, titleNode, txt);
+               } catch (RepositoryException e) {
+                       throw new JcrException("Cannot add empty paragraph to " + node, e);
+               }
+       }
+
+       public static Node getMetadata(Node infoContainer) {
+               try {
+                       if (!infoContainer.hasNode(DocBookTypes.INFO))
+                               return null;
+                       Node info = infoContainer.getNode(DocBookTypes.INFO);
+                       if (!info.hasNode(EntityType.local.get()))
+                               return null;
+                       return info.getNode(EntityType.local.get());
+               } catch (RepositoryException e) {
+                       throw new JcrException("Cannot retrieve metadata from " + infoContainer, e);
+               }
+       }
+
+       public static Node getChildByRole(Node parent, String role) {
+               try {
+                       NodeIterator baseSections = parent.getNodes();
+                       while (baseSections.hasNext()) {
+                               Node n = baseSections.nextNode();
+                               String r = Jcr.get(n, DocBookNames.DBK_ROLE);
+                               if (r != null && r.equals(role))
+                                       return n;
+                       }
+                       return null;
+               } catch (RepositoryException e) {
+                       throw new JcrException("Cannot get child from " + parent + " with role " + role, e);
+               }
+       }
+
+       public static Node addParagraph(Node node, String txt) {
+               try {
+                       Node para = node.addNode(DocBookTypes.PARA, DocBookTypes.PARA);
+                       JcrxApi.setXmlValue(node, para, txt);
+                       return para;
+               } catch (RepositoryException e) {
+                       throw new JcrException("Cannot add empty paragraph to " + node, e);
+               }
+       }
+
+       public static Node insertImageAfter(Node sibling) {
+               try {
+                       Node parent = sibling.getParent();
+                       Node mediaNode = parent.addNode(DocBookTypes.MEDIAOBJECT, DocBookTypes.MEDIAOBJECT);
+                       // TODO optimise?
+                       parent.orderBefore(mediaNode.getName() + "[" + mediaNode.getIndex() + "]",
+                                       sibling.getName() + "[" + sibling.getIndex() + "]");
+                       parent.orderBefore(sibling.getName() + "[" + sibling.getIndex() + "]",
+                                       mediaNode.getName() + "[" + mediaNode.getIndex() + "]");
+
+                       Node imageNode = mediaNode.addNode(DocBookTypes.IMAGEOBJECT, DocBookTypes.IMAGEOBJECT);
+                       Node infoNode = imageNode.addNode(DocBookTypes.INFO, DocBookTypes.INFO);
+                       Node imageDataNode = JcrUtils.copyBytesAsFile(infoNode, EntityType.box.get(), new byte[0]);
+                       imageDataNode.addMixin(EntityType.box.get());
+                       imageDataNode.setProperty(EntityNames.SVG_WIDTH, 0);
+                       imageDataNode.setProperty(EntityNames.SVG_LENGTH, 0);
+                       imageDataNode.addMixin(NodeType.MIX_MIMETYPE);
+                       return imageDataNode;
+               } catch (RepositoryException e) {
+                       throw new JcrException("Cannot insert empty image after " + sibling, e);
+               }
+       }
+
+       /** Singleton. */
+       private DbkUtils() {
+       }
+}