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