ui/widgets/Img.java

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