org.argeo.cms.ui/src/org/argeo/cms/ui/internal/ImageManagerImpl.java

   1 package org.argeo.cms.ui.internal;
   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 import static javax.jcr.nodetype.NodeType.NT_RESOURCE;
   7 import static org.argeo.cms.CmsTypes.CMS_STYLED;
   8 import static org.argeo.cms.ui.CmsConstants.NO_IMAGE_SIZE;
   9
  10 import java.io.ByteArrayInputStream;
  11 import java.io.IOException;
  12 import java.io.InputStream;
  13 import java.nio.file.Files;
  14 import java.nio.file.Paths;
  15
  16 import javax.jcr.Binary;
  17 import javax.jcr.Node;
  18 import javax.jcr.Property;
  19 import javax.jcr.RepositoryException;
  20
  21 import org.apache.commons.io.IOUtils;
  22 import org.apache.commons.logging.Log;
  23 import org.apache.commons.logging.LogFactory;
  24 import org.argeo.cms.CmsException;
  25 import org.argeo.cms.CmsNames;
  26 import org.argeo.cms.CmsTypes;
  27 import org.argeo.cms.ui.CmsImageManager;
  28 import org.argeo.cms.util.CmsUtils;
  29 import org.argeo.jcr.JcrUtils;
  30 import org.eclipse.rap.rwt.RWT;
  31 import org.eclipse.rap.rwt.service.ResourceManager;
  32 import org.eclipse.rap.rwt.widgets.FileUpload;
  33 import org.eclipse.swt.graphics.Image;
  34 import org.eclipse.swt.graphics.ImageData;
  35 import org.eclipse.swt.graphics.Point;
  36 import org.eclipse.swt.widgets.Control;
  37 import org.eclipse.swt.widgets.Display;
  38 import org.eclipse.swt.widgets.Label;
  39
  40 /** Manages only public images so far. */
  41 public class ImageManagerImpl implements CmsImageManager, CmsNames {
  42         private final static Log log = LogFactory.getLog(ImageManagerImpl.class);
  43 //      private MimetypesFileTypeMap fileTypeMap = new MimetypesFileTypeMap();
  44
  45         public Boolean load(Node node, Control control, Point preferredSize) throws RepositoryException {
  46                 Point imageSize = getImageSize(node);
  47                 Point size;
  48                 String imgTag = null;
  49                 if (preferredSize == null || imageSize.x == 0 || imageSize.y == 0
  50                                 || (preferredSize.x == 0 && preferredSize.y == 0)) {
  51                         if (imageSize.x != 0 && imageSize.y != 0) {
  52                                 // actual image size if completely known
  53                                 size = imageSize;
  54                         } else {
  55                                 // no image if not completely known
  56                                 size = resizeTo(NO_IMAGE_SIZE, preferredSize != null ? preferredSize : imageSize);
  57                                 imgTag = CmsUtils.noImg(size);
  58                         }
  59
  60                 } else if (preferredSize.x != 0 && preferredSize.y != 0) {
  61                         // given size if completely provided
  62                         size = preferredSize;
  63                 } else {
  64                         // at this stage :
  65                         // image is completely known
  66                         assert imageSize.x != 0 && imageSize.y != 0;
  67                         // one and only one of the dimension as been specified
  68                         assert preferredSize.x == 0 || preferredSize.y == 0;
  69                         size = resizeTo(imageSize, preferredSize);
  70                 }
  71
  72                 boolean loaded = false;
  73                 if (control == null)
  74                         return loaded;
  75
  76                 if (control instanceof Label) {
  77                         if (imgTag == null) {
  78                                 // IMAGE RETRIEVED HERE
  79                                 imgTag = getImageTag(node, size);
  80                                 //
  81                                 if (imgTag == null)
  82                                         imgTag = CmsUtils.noImg(size);
  83                                 else
  84                                         loaded = true;
  85                         }
  86
  87                         Label lbl = (Label) control;
  88                         lbl.setText(imgTag);
  89                         // lbl.setSize(size);
  90                 } else if (control instanceof FileUpload) {
  91                         FileUpload lbl = (FileUpload) control;
  92                         lbl.setImage(CmsUtils.noImage(size));
  93                         lbl.setSize(size);
  94                         return loaded;
  95                 } else
  96                         loaded = false;
  97
  98                 return loaded;
  99         }
 100
 101         private Point resizeTo(Point orig, Point constraints) {
 102                 if (constraints.x != 0 && constraints.y != 0) {
 103                         return constraints;
 104                 } else if (constraints.x == 0 && constraints.y == 0) {
 105                         return orig;
 106                 } else if (constraints.y == 0) {// force width
 107                         return new Point(constraints.x, scale(orig.y, orig.x, constraints.x));
 108                 } else if (constraints.x == 0) {// force height
 109                         return new Point(scale(orig.x, orig.y, constraints.y), constraints.y);
 110                 }
 111                 throw new CmsException("Cannot resize " + orig + " to " + constraints);
 112         }
 113
 114         private int scale(int origDimension, int otherDimension, int otherConstraint) {
 115                 return Math.round(origDimension * divide(otherConstraint, otherDimension));
 116         }
 117
 118         private float divide(int a, int b) {
 119                 return ((float) a) / ((float) b);
 120         }
 121
 122         public Point getImageSize(Node node) throws RepositoryException {
 123                 return new Point(node.hasProperty(CMS_IMAGE_WIDTH) ? (int) node.getProperty(CMS_IMAGE_WIDTH).getLong() : 0,
 124                                 node.hasProperty(CMS_IMAGE_WIDTH) ? (int) node.getProperty(CMS_IMAGE_HEIGHT).getLong() : 0);
 125         }
 126
 127         /** @return null if not available */
 128         @Override
 129         public String getImageTag(Node node) throws RepositoryException {
 130                 return getImageTag(node, getImageSize(node));
 131         }
 132
 133         private String getImageTag(Node node, Point size) throws RepositoryException {
 134                 StringBuilder buf = getImageTagBuilder(node, size);
 135                 if (buf == null)
 136                         return null;
 137                 return buf.append("/>").toString();
 138         }
 139
 140         /** @return null if not available */
 141         @Override
 142         public StringBuilder getImageTagBuilder(Node node, Point size) throws RepositoryException {
 143                 return getImageTagBuilder(node, Integer.toString(size.x), Integer.toString(size.y));
 144         }
 145
 146         /** @return null if not available */
 147         private StringBuilder getImageTagBuilder(Node node, String width, String height) throws RepositoryException {
 148                 String url = getImageUrl(node);
 149                 if (url == null)
 150                         return null;
 151                 return CmsUtils.imgBuilder(url, width, height);
 152         }
 153
 154         /** @return null if not available */
 155         @Override
 156         public String getImageUrl(Node node) throws RepositoryException {
 157                 return CmsUtils.getDataPath(node);
 158                 // String name = getResourceName(node);
 159                 // ResourceManager resourceManager = RWT.getResourceManager();
 160                 // if (!resourceManager.isRegistered(name)) {
 161                 // InputStream inputStream = null;
 162                 // Binary binary = getImageBinary(node);
 163                 // if (binary == null)
 164                 // return null;
 165                 // try {
 166                 // inputStream = binary.getStream();
 167                 // resourceManager.register(name, inputStream);
 168                 // } finally {
 169                 // IOUtils.closeQuietly(inputStream);
 170                 // JcrUtils.closeQuietly(binary);
 171                 // }
 172                 // if (log.isTraceEnabled())
 173                 // log.trace("Registered image " + name);
 174                 // }
 175                 // return resourceManager.getLocation(name);
 176         }
 177
 178         protected String getResourceName(Node node) throws RepositoryException {
 179                 String workspace = node.getSession().getWorkspace().getName();
 180                 if (node.hasNode(JCR_CONTENT))
 181                         return workspace + '_' + node.getNode(JCR_CONTENT).getIdentifier();
 182                 else
 183                         return workspace + '_' + node.getIdentifier();
 184         }
 185
 186         public Binary getImageBinary(Node node) throws RepositoryException {
 187                 if (node.isNodeType(NT_FILE))
 188                         return node.getNode(JCR_CONTENT).getProperty(JCR_DATA).getBinary();
 189                 else if (node.isNodeType(CMS_STYLED) && node.hasProperty(CMS_DATA)) {
 190                         return node.getProperty(CMS_DATA).getBinary();
 191                 } else {
 192                         return null;
 193                 }
 194         }
 195
 196         public Image getSwtImage(Node node) throws RepositoryException {
 197                 InputStream inputStream = null;
 198                 Binary binary = getImageBinary(node);
 199                 if (binary == null)
 200                         return null;
 201                 try {
 202                         inputStream = binary.getStream();
 203                         return new Image(Display.getCurrent(), inputStream);
 204                 } finally {
 205                         IOUtils.closeQuietly(inputStream);
 206                         JcrUtils.closeQuietly(binary);
 207                 }
 208         }
 209
 210         @Override
 211         public String uploadImage(Node parentNode, String fileName, InputStream in) throws RepositoryException {
 212                 InputStream inputStream = null;
 213                 try {
 214                         String previousResourceName = null;
 215                         if (parentNode.hasNode(fileName)) {
 216                                 Node node = parentNode.getNode(fileName);
 217                                 previousResourceName = getResourceName(node);
 218                                 if (node.hasNode(JCR_CONTENT)) {
 219                                         node.getNode(JCR_CONTENT).remove();
 220                                         node.addNode(JCR_CONTENT, NT_RESOURCE);
 221                                 }
 222                         }
 223
 224                         byte[] arr = IOUtils.toByteArray(in);
 225                         Node fileNode = JcrUtils.copyBytesAsFile(parentNode, fileName, arr);
 226                         fileNode.addMixin(CmsTypes.CMS_IMAGE);
 227
 228                         inputStream = new ByteArrayInputStream(arr);
 229                         ImageData id = new ImageData(inputStream);
 230                         fileNode.setProperty(CMS_IMAGE_WIDTH, id.width);
 231                         fileNode.setProperty(CMS_IMAGE_HEIGHT, id.height);
 232                         String mime = Files.probeContentType(Paths.get(fileName));
 233                         fileNode.setProperty(Property.JCR_MIMETYPE, mime);
 234                         fileNode.getSession().save();
 235
 236                         // reset resource manager
 237                         ResourceManager resourceManager = RWT.getResourceManager();
 238                         if (previousResourceName != null && resourceManager.isRegistered(previousResourceName)) {
 239                                 resourceManager.unregister(previousResourceName);
 240                                 if (log.isDebugEnabled())
 241                                         log.debug("Unregistered image " + previousResourceName);
 242                         }
 243                         return getImageUrl(fileNode);
 244                 } catch (IOException e) {
 245                         throw new CmsException("Cannot upload image " + fileName + " in " + parentNode, e);
 246                 } finally {
 247                         IOUtils.closeQuietly(inputStream);
 248                 }
 249         }
 250 }