publishing/org.argeo.publishing.ui/src/org/argeo/docbook/ui/DbkImageManager.java

   1 package org.argeo.docbook.ui;
   2
   3 import static javax.jcr.Node.JCR_CONTENT;
   4 import static javax.jcr.Property.JCR_DATA;
   5 import static javax.jcr.nodetype.NodeType.NT_FILE;
   6
   7 import java.io.IOException;
   8 import java.io.InputStream;
   9 import java.io.UnsupportedEncodingException;
  10 import java.net.URI;
  11 import java.net.URISyntaxException;
  12 import java.net.URLEncoder;
  13 import java.nio.charset.StandardCharsets;
  14
  15 import javax.jcr.Binary;
  16 import javax.jcr.Node;
  17 import javax.jcr.RepositoryException;
  18 import javax.jcr.nodetype.NodeType;
  19
  20 import org.argeo.cms.ui.CmsImageManager;
  21 import org.argeo.cms.ui.util.CmsUiUtils;
  22 import org.argeo.cms.ui.util.DefaultImageManager;
  23 import org.argeo.docbook.DbkUtils;
  24 import org.argeo.docbook.DbkAttr;
  25 import org.argeo.docbook.DbkType;
  26 import org.argeo.entity.EntityNames;
  27 import org.argeo.entity.EntityType;
  28 import org.argeo.jcr.JcrException;
  29 import org.argeo.jcr.JcrUtils;
  30 import org.eclipse.swt.graphics.ImageData;
  31 import org.eclipse.swt.graphics.Point;
  32
  33 /** Add DocBook images support to {@link CmsImageManager}. */
  34 public class DbkImageManager extends DefaultImageManager {
  35         private Node baseFolder = null;
  36
  37         public DbkImageManager(Node baseFolder) {
  38                 this.baseFolder = baseFolder;
  39         }
  40
  41         Node getImageDataNode(Node mediaObjectNode) throws RepositoryException {
  42                 if (mediaObjectNode.hasNode(DbkType.imageobject.get())) {
  43                         Node imageDataNode = mediaObjectNode.getNode(DbkType.imageobject.get()).getNode(DbkType.imagedata.get());
  44                         return imageDataNode;
  45                 } else {
  46                         throw new IllegalStateException("No image data found for " + mediaObjectNode);
  47                 }
  48         }
  49
  50         @Override
  51         public Binary getImageBinary(Node node) throws RepositoryException {
  52                 Node fileNode = null;
  53                 if (DbkUtils.isDbk(node, DbkType.mediaobject)) {
  54                         Node imageDataNode = getImageDataNode(node);
  55                         fileNode = getFileNode(imageDataNode);
  56                 }
  57                 if (node.isNodeType(NT_FILE)) {
  58                         fileNode = node;
  59                 }
  60                 if (fileNode != null) {
  61                         return node.getNode(JCR_CONTENT).getProperty(JCR_DATA).getBinary();
  62                 } else {
  63                         return null;
  64                 }
  65         }
  66
  67         public Point getImageSize(Node mediaObjectNode) throws RepositoryException {
  68                 Node imageDataNode = getImageDataNode(mediaObjectNode);
  69                 Node fileNode = getFileNode(imageDataNode);
  70                 if (fileNode == null)
  71                         return new Point(0, 0);
  72                 Point intrinsicSize;
  73                 if (fileNode.hasProperty(EntityNames.SVG_WIDTH) && fileNode.hasProperty(EntityNames.SVG_HEIGHT)) {
  74                         int width = (int) fileNode.getProperty(EntityNames.SVG_WIDTH).getLong();
  75                         int height = (int) fileNode.getProperty(EntityNames.SVG_HEIGHT).getLong();
  76                         intrinsicSize = new Point(width, height);
  77                 } else {
  78                         try (InputStream in = JcrUtils.getFileAsStream(fileNode)) {
  79                                 ImageData id = new ImageData(in);
  80                                 intrinsicSize = updateSize(fileNode, id);
  81                         } catch (IOException e) {
  82                                 throw new RuntimeException("Cannot load file " + fileNode, e);
  83                         }
  84                 }
  85                 // TODO interpret image data infos
  86                 return intrinsicSize;
  87         }
  88
  89         protected Point updateSize(Node fileNode, ImageData id) throws RepositoryException {
  90                 fileNode.addMixin(EntityType.box.get());
  91                 fileNode.setProperty(EntityNames.SVG_WIDTH, id.width);
  92                 fileNode.setProperty(EntityNames.SVG_HEIGHT, id.height);
  93                 return new Point(id.width, id.height);
  94         }
  95
  96         @Override
  97         protected void processNewImageFile(Node mediaObjectNode, Node fileNode, ImageData id)
  98                         throws RepositoryException, IOException {
  99                 Node imageDataNode = getImageDataNode(mediaObjectNode);
 100                 updateSize(fileNode, id);
 101                 String filePath = fileNode.getPath();
 102                 String relPath = filePath.substring(baseFolder.getPath().length() + 1);
 103                 imageDataNode.setProperty(DbkAttr.fileref.name(), relPath);
 104         }
 105
 106         @Override
 107         public String getImageUrl(Node mediaObjectNode) throws RepositoryException {
 108                 Node imageDataNode = getImageDataNode(mediaObjectNode);
 109                 // TODO factorise
 110                 String fileref = null;
 111                 if (imageDataNode.hasProperty(DbkAttr.fileref.name()))
 112                         fileref = imageDataNode.getProperty(DbkAttr.fileref.name()).getString();
 113                 if (fileref == null)
 114                         return null;
 115                 URI fileUri;
 116                 try {
 117                         fileUri = new URI(URLEncoder.encode(fileref, StandardCharsets.UTF_8.toString()));
 118                 } catch (URISyntaxException | UnsupportedEncodingException e) {
 119                         throw new IllegalArgumentException("File ref in " + imageDataNode + " is badly formatted", e);
 120                 }
 121                 if (fileUri.getScheme() != null)
 122                         return fileUri.toString();
 123                 // local
 124                 Node fileNode = getFileNode(imageDataNode);
 125                 String url = CmsUiUtils.getDataPath(fileNode);
 126                 return url;
 127         }
 128
 129         protected Node getFileNode(Node imageDataNode) throws RepositoryException {
 130                 // FIXME make URL use case more robust
 131                 String fileref = null;
 132                 if (imageDataNode.hasProperty(DbkAttr.fileref.name()))
 133                         fileref = imageDataNode.getProperty(DbkAttr.fileref.name()).getString();
 134                 if (fileref == null)
 135                         return null;
 136                 Node fileNode;
 137                 if (fileref.startsWith("/"))
 138                         fileNode = baseFolder.getSession().getNode(fileref);
 139                 else
 140                         fileNode = baseFolder.getNode(fileref);
 141                 return fileNode;
 142         }
 143
 144         protected Node getMediaFolder() {
 145                 try {
 146                         // TODO check edition status
 147                         Node mediaFolder = JcrUtils.getOrAdd(baseFolder, EntityNames.MEDIA, NodeType.NT_FOLDER);
 148                         return mediaFolder;
 149                 } catch (RepositoryException e) {
 150                         throw new JcrException("Cannot get media folder", e);
 151                 }
 152         }
 153 }