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.api.cms.ux.Cms2DSize;
   7 import org.argeo.api.cms.ux.CmsImageManager;
   8 import org.argeo.cms.swt.CmsSwtUtils;
   9 import org.argeo.cms.ui.internal.JcrFileUploadReceiver;
  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.argeo.jcr.Jcr;
  14 import org.argeo.jcr.JcrException;
  15 import org.eclipse.rap.fileupload.FileUploadHandler;
  16 import org.eclipse.rap.fileupload.FileUploadListener;
  17 import org.eclipse.rap.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.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<Control, Node> imageManager;
  33         private FileUploadHandler currentUploadHandler = null;
  34         private FileUploadListener fileUploadListener;
  35
  36         public Img(Composite parent, int swtStyle, Node imgNode, Cms2DSize preferredImageSize) throws RepositoryException {
  37                 this(Section.findSection(parent), parent, swtStyle, imgNode, preferredImageSize, null);
  38                 setStyle(TextStyles.TEXT_IMAGE);
  39         }
  40
  41         public Img(Composite parent, int swtStyle, Node imgNode) throws RepositoryException {
  42                 this(Section.findSection(parent), parent, swtStyle, imgNode, null, null);
  43                 setStyle(TextStyles.TEXT_IMAGE);
  44         }
  45
  46         public Img(Composite parent, int swtStyle, Node imgNode, CmsImageManager<Control, Node> imageManager)
  47                         throws RepositoryException {
  48                 this(Section.findSection(parent), parent, swtStyle, imgNode, null, imageManager);
  49                 setStyle(TextStyles.TEXT_IMAGE);
  50         }
  51
  52         Img(Section section, Composite parent, int swtStyle, Node imgNode, Cms2DSize preferredImageSize,
  53                         CmsImageManager<Control, Node> imageManager) throws RepositoryException {
  54                 super(parent, swtStyle, imgNode, false, preferredImageSize);
  55                 this.section = section;
  56                 this.imageManager = imageManager != null ? imageManager
  57                                 : (CmsImageManager<Control, Node>) CmsSwtUtils.getCmsView(section).getImageManager();
  58                 CmsSwtUtils.style(this, TextStyles.TEXT_IMG);
  59         }
  60
  61         @Override
  62         protected Control createControl(Composite box, String style) {
  63                 if (isEditing()) {
  64                         try {
  65                                 return createImageChooser(box, style);
  66                         } catch (RepositoryException e) {
  67                                 throw new JcrException("Cannot create image chooser", e);
  68                         }
  69                 } else {
  70                         return createLabel(box, style);
  71                 }
  72         }
  73
  74         @Override
  75         public synchronized void stopEditing() {
  76                 super.stopEditing();
  77                 fileUploadListener = null;
  78         }
  79
  80         @Override
  81         protected synchronized Boolean load(Control lbl) {
  82                 Node imgNode = getNode();
  83                 boolean loaded = imageManager.load(imgNode, lbl, getPreferredImageSize());
  84                 // getParent().layout();
  85                 return loaded;
  86         }
  87
  88         protected Node getUploadFolder() {
  89                 return Jcr.getParent(getNode());
  90         }
  91
  92         protected String getUploadName() {
  93                 Node node = getNode();
  94                 return Jcr.getName(node) + '[' + Jcr.getIndex(node) + ']';
  95         }
  96
  97         protected CmsImageManager<Control, Node> getImageManager() {
  98                 return imageManager;
  99         }
 100
 101         protected Control createImageChooser(Composite box, String style) throws RepositoryException {
 102                 JcrFileUploadReceiver receiver = new JcrFileUploadReceiver(this, getUploadFolder(), getUploadName(),
 103                                 imageManager);
 104                 if (currentUploadHandler != null)
 105                         currentUploadHandler.dispose();
 106                 currentUploadHandler = prepareUpload(receiver);
 107                 final ServerPushSession pushSession = new ServerPushSession();
 108                 final FileUpload fileUpload = new FileUpload(box, SWT.NONE);
 109                 CmsSwtUtils.style(fileUpload, style);
 110                 fileUpload.addSelectionListener(new SelectionAdapter() {
 111                         private static final long serialVersionUID = -9158471843941668562L;
 112
 113                         @Override
 114                         public void widgetSelected(SelectionEvent e) {
 115                                 pushSession.start();
 116                                 fileUpload.submit(currentUploadHandler.getUploadUrl());
 117                         }
 118                 });
 119                 return fileUpload;
 120         }
 121
 122         protected FileUploadHandler prepareUpload(FileUploadReceiver receiver) {
 123                 final FileUploadHandler uploadHandler = new FileUploadHandler(receiver);
 124                 if (fileUploadListener != null)
 125                         uploadHandler.addUploadListener(fileUploadListener);
 126                 return uploadHandler;
 127         }
 128
 129         @Override
 130         public Section getSection() {
 131                 return section;
 132         }
 133
 134         public void setFileUploadListener(FileUploadListener fileUploadListener) {
 135                 this.fileUploadListener = fileUploadListener;
 136                 if (currentUploadHandler != null)
 137                         currentUploadHandler.addUploadListener(fileUploadListener);
 138         }
 139
 140         @Override
 141         public Node getItem() throws RepositoryException {
 142                 return getNode();
 143         }
 144
 145         @Override
 146         public String getPartId() {
 147                 return getNodeId();
 148         }
 149
 150         @Override
 151         public String toString() {
 152                 return "Img #" + getPartId();
 153         }
 154
 155 }