eclipse/org.argeo.cms.swt/src/org/argeo/eclipse/ui/fs/NioFileLabelProvider.java

   1 package org.argeo.eclipse.ui.fs;
   2
   3 import java.io.IOException;
   4 import java.nio.file.Files;
   5 import java.nio.file.Path;
   6 import java.nio.file.attribute.FileTime;
   7 import java.text.DateFormat;
   8 import java.text.SimpleDateFormat;
   9 import java.util.Date;
  10
  11 import org.argeo.eclipse.ui.EclipseUiUtils;
  12 import org.eclipse.jface.viewers.ColumnLabelProvider;
  13
  14 /** Expect a {@link Path} as input element */
  15 public class NioFileLabelProvider extends ColumnLabelProvider {
  16         private final static FileTime EPOCH = FileTime.fromMillis(0);
  17         private static final long serialVersionUID = 2160026425187796930L;
  18         private final String propName;
  19         private DateFormat dateFormat = new SimpleDateFormat("YYYY-MM-dd HH:mm");
  20
  21         // TODO use new formatting
  22         // DateTimeFormatter formatter =
  23         // DateTimeFormatter.ofLocalizedDateTime( FormatStyle.SHORT )
  24         // .withLocale( Locale.UK )
  25         // .withZone( ZoneId.systemDefault() );
  26         public NioFileLabelProvider(String propName) {
  27                 this.propName = propName;
  28         }
  29
  30         @Override
  31         public String getText(Object element) {
  32                 try {
  33                         Path path;
  34                         if (element instanceof ParentDir) {
  35 //                              switch (propName) {
  36 //                              case FsUiConstants.PROPERTY_SIZE:
  37 //                                      return "-";
  38 //                              case FsUiConstants.PROPERTY_LAST_MODIFIED:
  39 //                                      return "-";
  40 //                              // return Files.getLastModifiedTime(((ParentDir) element).getPath()).toString();
  41 //                              case FsUiConstants.PROPERTY_TYPE:
  42 //                                      return "Folder";
  43 //                              }
  44                                 path = ((ParentDir) element).getPath();
  45                         } else
  46                                 path = (Path) element;
  47                         switch (propName) {
  48                         case FsUiConstants.PROPERTY_SIZE:
  49                                 if (Files.isDirectory(path))
  50                                         return "-";
  51                                 else
  52                                         return FsUiUtils.humanReadableByteCount(Files.size(path), false);
  53                         case FsUiConstants.PROPERTY_LAST_MODIFIED:
  54                                 if (Files.isDirectory(path))
  55                                         return "-";
  56                                 FileTime time = Files.getLastModifiedTime(path);
  57                                 if (time.equals(EPOCH))
  58                                         return "-";
  59                                 else
  60                                         return dateFormat.format(new Date(time.toMillis()));
  61                         case FsUiConstants.PROPERTY_TYPE:
  62                                 if (Files.isDirectory(path))
  63                                         return "Folder";
  64                                 else {
  65                                         String mimeType = Files.probeContentType(path);
  66                                         if (EclipseUiUtils.isEmpty(mimeType))
  67                                                 return "Unknown";
  68                                         else
  69                                                 return mimeType;
  70                                 }
  71                         default:
  72                                 throw new IllegalArgumentException("Unsupported property " + propName);
  73                         }
  74                 } catch (IOException ioe) {
  75                         throw new FsUiException("Cannot get property " + propName + " on " + element);
  76                 }
  77         }
  78 }