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