eclipse/runtime/org.argeo.eclipse.ui.rcp/src/main/java/org/argeo/eclipse/ui/specific/GenericUploadControl.java

   1 package org.argeo.eclipse.ui.specific;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5
   6 import org.apache.commons.io.FileUtils;
   7 import org.argeo.ArgeoException;
   8 import org.eclipse.swt.SWT;
   9 import org.eclipse.swt.events.ModifyListener;
  10 import org.eclipse.swt.layout.GridData;
  11 import org.eclipse.swt.layout.GridLayout;
  12 import org.eclipse.swt.widgets.Button;
  13 import org.eclipse.swt.widgets.Composite;
  14 import org.eclipse.swt.widgets.Event;
  15 import org.eclipse.swt.widgets.FileDialog;
  16 import org.eclipse.swt.widgets.Listener;
  17 import org.eclipse.swt.widgets.Text;
  18
  19 /**
  20  * RCP specific composite that provides a control to upload a file. WARNING: for
  21  * the time being we set a GridLayout(2, false) on th eparent control.
  22  */
  23 public class GenericUploadControl extends Composite {
  24         // private final static Log log = LogFactory
  25         // .getLog(GenericUploadControl.class);
  26
  27         private FileDialog dialog;
  28         private Text filePath;
  29
  30         public GenericUploadControl(Composite parent, int style, String browseLabel) {
  31                 super(parent, style);
  32                 createControl(this, browseLabel);
  33
  34         }
  35
  36         private void createControl(final Composite parent, String browseLabel) {
  37                 parent.setLayout(new GridLayout(2, false));
  38
  39                 filePath = new Text(parent, SWT.BORDER | SWT.SINGLE);
  40                 GridData gd = new GridData(GridData.GRAB_HORIZONTAL
  41                                 | GridData.FILL_HORIZONTAL);
  42                 filePath.setEditable(false);
  43                 filePath.setLayoutData(gd);
  44
  45                 // Execute button
  46                 Button execute = new Button(parent, SWT.PUSH);
  47                 GridData gridData = new GridData();
  48                 gridData.horizontalAlignment = GridData.BEGINNING;
  49                 execute.setLayoutData(gridData);
  50                 execute.setText(browseLabel);
  51
  52                 // Button listener
  53                 Listener executeListener = new Listener() {
  54                         public void handleEvent(Event event) {
  55                                 dialog = new FileDialog(parent.getShell());
  56                                 filePath.setText(dialog.open());
  57                         }
  58                 };
  59                 parent.layout();
  60                 execute.addListener(SWT.Selection, executeListener);
  61         }
  62
  63         public boolean isControlEmpty() {
  64                 String path = filePath.getText();
  65                 if (path == null || "".equals(path.trim()))
  66                         return true;
  67                 else
  68                         return false;
  69         }
  70
  71         public byte[] performUpload() {
  72                 String path = filePath.getText();
  73                 if (path != null) {
  74                         try {
  75                                 File file = new File(path);
  76                                 byte[] fileBA = FileUtils.readFileToByteArray(file);
  77                                 return fileBA;
  78                         } catch (IOException e) {
  79                                 throw new ArgeoException("Unexpected error while "
  80                                                 + "reading file at path " + path, e);
  81                         }
  82                 }
  83                 return null;
  84         }
  85
  86         public void addModifyListener(ModifyListener listener) {
  87                 filePath.addModifyListener(listener);
  88         }
  89
  90         /**
  91          * Always returns null in an RCP environment
  92          */
  93         public String getLastFileUploadedName() {
  94                 return null;
  95         }
  96 }