GenericUploadControl.java

   1 package org.argeo.eclipse.ui.specific;
   2
   3 import java.io.InputStream;
   4
   5 import org.apache.commons.io.IOUtils;
   6 import org.apache.commons.logging.Log;
   7 import org.apache.commons.logging.LogFactory;
   8 import org.argeo.ArgeoException;
   9 import org.eclipse.rwt.widgets.Upload;
  10 import org.eclipse.swt.SWT;
  11 import org.eclipse.swt.events.ModifyListener;
  12 import org.eclipse.swt.layout.GridData;
  13 import org.eclipse.swt.layout.GridLayout;
  14 import org.eclipse.swt.widgets.Composite;
  15
  16 public class GenericUploadControl extends Composite {
  17         private final static Log log = LogFactory
  18                         .getLog(GenericUploadControl.class);
  19
  20         private Upload upload;
  21
  22         public GenericUploadControl(Composite parent, int style, String browseLabel) {
  23                 super(parent, style);
  24                 createControl(this, browseLabel);
  25
  26         }
  27
  28         private void createControl(Composite parent, String browseLabel) {
  29                 parent.setLayout(new GridLayout(1, false));
  30                 parent.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
  31
  32                 upload = new Upload(parent, SWT.BORDER);
  33                 upload.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
  34                 upload.setBrowseButtonText(browseLabel);
  35                 // upload.addModifyListener(new UploadListener());
  36                 parent.pack();
  37         }
  38
  39         public boolean isControlEmpty() {
  40                 String path = upload.getPath();
  41                 if (log.isTraceEnabled())
  42                         log.trace("UploadControl chosen path : " + path);
  43                 if (path == null || "".equals(path.trim()))
  44                         return true;
  45                 else
  46                         return false;
  47         }
  48
  49         public byte[] performUpload() {
  50                 boolean success = upload.performUpload();
  51                 if (success) {
  52                         if (upload.getUploadItem().getFileSize() == -1)
  53                                 throw new ArgeoException("File "
  54                                                 + upload.getUploadItem().getFileName()
  55                                                 + " has not been uploaded, its size is -1");
  56
  57                         InputStream inStream = null;
  58                         byte[] fileBA = null;
  59                         try {
  60                                 inStream = upload.getUploadItem().getFileInputStream();
  61                                 fileBA = IOUtils.toByteArray(inStream);
  62                         } catch (Exception e) {
  63                                 throw new ArgeoException("Cannot read uploaded data", e);
  64                         } finally {
  65                                 IOUtils.closeQuietly(inStream);
  66                         }
  67                         return fileBA;
  68                 }
  69                 return null;
  70         }
  71
  72         public void addModifyListener(ModifyListener listener) {
  73                 upload.addModifyListener(listener);
  74         }
  75
  76         // private class UploadManager extends UploadAdapter {
  77         // private Upload upload;
  78         //
  79         // public UploadManager(Upload upload) {
  80         // super();
  81         // this.upload = upload;
  82         // }
  83         //
  84         // public void uploadFinished(UploadEvent uploadEvent) {
  85         // handleUploadFinished(upload);
  86         // }
  87         //
  88         // public void uploadInProgress(UploadEvent uploadEvent) {
  89         // }
  90         //
  91         // public void uploadException(UploadEvent uploadEvent) {
  92         // Exception exc = uploadEvent.getUploadException();
  93         // if (exc != null) {
  94         // MessageDialog.openError(Display.getCurrent().getActiveShell(),
  95         // "Error", exc.getMessage());
  96         // }
  97         // }
  98         //
  99         // }
 100         //
 101
 102 }