org.argeo.cms/src/org/argeo/cms/text/Img.java

   1 package org.argeo.cms.text;
   2
   3 import javax.jcr.Node;
   4 import javax.jcr.RepositoryException;
   5
   6 import org.argeo.cms.CmsException;
   7 import org.argeo.cms.CmsImageManager;
   8 import org.argeo.cms.CmsSession;
   9 import org.argeo.cms.CmsUtils;
  10 import org.argeo.cms.internal.JcrFileUploadReceiver;
  11 import org.argeo.cms.viewers.NodePart;
  12 import org.argeo.cms.viewers.Section;
  13 import org.argeo.cms.viewers.SectionPart;
  14 import org.argeo.cms.widgets.EditableImage;
  15 import org.eclipse.rap.addons.fileupload.FileUploadHandler;
  16 import org.eclipse.rap.addons.fileupload.FileUploadListener;
  17 import org.eclipse.rap.addons.fileupload.FileUploadReceiver;
  18 import org.eclipse.rap.rwt.service.ServerPushSession;
  19 import org.eclipse.rap.rwt.widgets.FileUpload;
  20 import org.eclipse.swt.SWT;
  21 import org.eclipse.swt.events.SelectionAdapter;
  22 import org.eclipse.swt.events.SelectionEvent;
  23 import org.eclipse.swt.graphics.Point;
  24 import org.eclipse.swt.widgets.Composite;
  25 import org.eclipse.swt.widgets.Control;
  26
  27 /** An image within the Argeo Text framework */
  28 public class Img extends EditableImage implements SectionPart, NodePart {
  29         private static final long serialVersionUID = 6233572783968188476L;
  30
  31         private final Section section;
  32
  33         private final CmsImageManager imageManager;
  34         private FileUploadHandler currentUploadHandler = null;
  35         private FileUploadListener fileUploadListener;
  36
  37         public Img(Composite parent, int swtStyle, Node imgNode,
  38                         Point preferredImageSize) throws RepositoryException {
  39                 this(Section.findSection(parent), parent, swtStyle, imgNode,
  40                                 preferredImageSize);
  41                 setStyle(TextStyles.TEXT_IMAGE);
  42         }
  43
  44         public Img(Composite parent, int swtStyle, Node imgNode)
  45                         throws RepositoryException {
  46                 this(Section.findSection(parent), parent, swtStyle, imgNode, null);
  47                 setStyle(TextStyles.TEXT_IMAGE);
  48         }
  49
  50         Img(Section section, Composite parent, int swtStyle, Node imgNode,
  51                         Point preferredImageSize) throws RepositoryException {
  52                 super(parent, swtStyle, imgNode, false, preferredImageSize);
  53                 this.section = section;
  54                 imageManager = CmsSession.current.get().getImageManager();
  55                 CmsUtils.style(this, TextStyles.TEXT_IMG);
  56         }
  57
  58         @Override
  59         protected Control createControl(Composite box, String style) {
  60                 if (isEditing()) {
  61                         try {
  62                                 return createImageChooser(box, style);
  63                         } catch (RepositoryException e) {
  64                                 throw new CmsException("Cannot create image chooser", e);
  65                         }
  66                 } else {
  67                         return createLabel(box, style);
  68                 }
  69         }
  70
  71         @Override
  72         public synchronized void stopEditing() {
  73                 super.stopEditing();
  74                 fileUploadListener = null;
  75         }
  76
  77         @Override
  78         protected synchronized Boolean load(Control lbl) {
  79                 try {
  80                         Node imgNode = getNode();
  81                         boolean loaded = imageManager.load(imgNode, lbl,
  82                                         getPreferredImageSize());
  83                         // getParent().layout();
  84                         return loaded;
  85                 } catch (RepositoryException e) {
  86                         throw new CmsException("Cannot load " + getNodeId()
  87                                         + " from image manager", e);
  88                 }
  89         }
  90
  91         protected Control createImageChooser(Composite box, String style)
  92                         throws RepositoryException {
  93                 // FileDialog fileDialog = new FileDialog(getShell());
  94                 // fileDialog.open();
  95                 // String fileName = fileDialog.getFileName();
  96                 CmsImageManager imageManager = CmsSession.current.get()
  97                                 .getImageManager();
  98                 Node node = getNode();
  99                 JcrFileUploadReceiver receiver = new JcrFileUploadReceiver(
 100                                 node.getParent(), node.getName() + '[' + node.getIndex() + ']',
 101                                 imageManager);
 102                 if (currentUploadHandler != null)
 103                         currentUploadHandler.dispose();
 104                 currentUploadHandler = prepareUpload(receiver);
 105                 final ServerPushSession pushSession = new ServerPushSession();
 106                 final FileUpload fileUpload = new FileUpload(box, SWT.NONE);
 107                 CmsUtils.style(fileUpload, style);
 108                 fileUpload.addSelectionListener(new SelectionAdapter() {
 109                         private static final long serialVersionUID = -9158471843941668562L;
 110
 111                         @Override
 112                         public void widgetSelected(SelectionEvent e) {
 113                                 pushSession.start();
 114                                 fileUpload.submit(currentUploadHandler.getUploadUrl());
 115                         }
 116                 });
 117                 return fileUpload;
 118         }
 119
 120         protected FileUploadHandler prepareUpload(FileUploadReceiver receiver) {
 121                 final FileUploadHandler uploadHandler = new FileUploadHandler(receiver);
 122                 if (fileUploadListener != null)
 123                         uploadHandler.addUploadListener(fileUploadListener);
 124                 return uploadHandler;
 125         }
 126
 127         @Override
 128         public Section getSection() {
 129                 return section;
 130         }
 131
 132         public void setFileUploadListener(FileUploadListener fileUploadListener) {
 133                 this.fileUploadListener = fileUploadListener;
 134                 if (currentUploadHandler != null)
 135                         currentUploadHandler.addUploadListener(fileUploadListener);
 136         }
 137
 138         @Override
 139         public Node getItem() throws RepositoryException {
 140                 return getNode();
 141         }
 142
 143         @Override
 144         public String getPartId() {
 145                 return getNodeId();
 146         }
 147
 148         @Override
 149         public String toString() {
 150                 return "Img #" + getPartId();
 151         }
 152
 153 }