org.argeo.eclipse.ui.rap/src/org/argeo/eclipse/ui/specific/FileDropAdapter.java

   1 package org.argeo.eclipse.ui.specific;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5
   6 import org.eclipse.rap.fileupload.FileDetails;
   7 import org.eclipse.rap.fileupload.FileUploadHandler;
   8 import org.eclipse.rap.fileupload.FileUploadReceiver;
   9 import org.eclipse.rap.rwt.RWT;
  10 import org.eclipse.rap.rwt.client.ClientFile;
  11 import org.eclipse.rap.rwt.client.service.ClientFileUploader;
  12 import org.eclipse.rap.rwt.dnd.ClientFileTransfer;
  13 import org.eclipse.swt.dnd.DND;
  14 import org.eclipse.swt.dnd.DropTarget;
  15 import org.eclipse.swt.dnd.DropTargetAdapter;
  16 import org.eclipse.swt.dnd.DropTargetEvent;
  17 import org.eclipse.swt.dnd.Transfer;
  18 import org.eclipse.swt.widgets.Control;
  19
  20 public class FileDropAdapter {
  21
  22         public void prepareDropTarget(Control control, DropTarget dropTarget) {
  23                 dropTarget.setTransfer(new Transfer[] { ClientFileTransfer.getInstance() });
  24                 dropTarget.addDropListener(new DropTargetAdapter() {
  25                         private static final long serialVersionUID = 5361645765549463168L;
  26
  27                         @Override
  28                         public void dropAccept(DropTargetEvent event) {
  29                                 if (!ClientFileTransfer.getInstance().isSupportedType(event.currentDataType)) {
  30                                         event.detail = DND.DROP_NONE;
  31                                 }
  32                         }
  33
  34                         @Override
  35                         public void drop(DropTargetEvent event) {
  36                                 handleFileDrop(control, event);
  37                         }
  38                 });
  39         }
  40
  41         public void handleFileDrop(Control control, DropTargetEvent event) {
  42                 ClientFile[] clientFiles = (ClientFile[]) event.data;
  43                 ClientFileUploader service = RWT.getClient().getService(ClientFileUploader.class);
  44 //              DiskFileUploadReceiver receiver = new DiskFileUploadReceiver();
  45                 FileUploadReceiver receiver = new FileUploadReceiver() {
  46
  47                         @Override
  48                         public void receive(InputStream stream, FileDetails details) throws IOException {
  49                                 control.getDisplay()
  50                                                 .syncExec(() -> processUpload(stream, details.getFileName(), details.getContentType()));
  51                         }
  52                 };
  53                 FileUploadHandler handler = new FileUploadHandler(receiver);
  54 //                  handler.setMaxFileSize( sizeLimit );
  55 //                  handler.setUploadTimeLimit( timeLimit );
  56                 service.submit(handler.getUploadUrl(), clientFiles);
  57 //              for (File file : receiver.getTargetFiles()) {
  58 //                      paths.add(file.toPath());
  59 //              }
  60         }
  61
  62         /** Executed in UI thread */
  63         protected void processUpload(InputStream in, String fileName, String contentType) {
  64
  65         }
  66
  67 }