Sort TreeGrid

Vaadin 6 / 7 / 8
1

Hi, i’m working on a S3 file explorer with a TreeGrid.

i need to sort the file in this way:

  1. Folder fist, sorted by name.
  2. Then files sorted by name.

Any idea on how to use properly the sorting?

Thanks

2

Giovanni Adobati:
Hi, i’m working on a S3 file explorer with a TreeGrid.

i need to sort the file in this way:

  1. Folder fist, sorted by name.
  2. Then files sorted by name.

Any idea on how to use properly the sorting?

Thanks

For whom is interested, i solved in this way.

		Column<S3File, String> fileNameColumn = addColumn(s3File -> {

			String filename = s3File.getName();

			filename = filename.substring(filename.lastIndexOf(DELIMITER) + 1);

			if (s3File.isDirectory()) {
				return VaadinIcons.FOLDER_O.getHtml() + " " + filename;
			} else if (s3File.isImage()) {
				return VaadinIcons.FILE_PICTURE.getHtml() + " " + filename;
			} else {
				return VaadinIcons.FILE_O.getHtml() + " " + filename;
			}

		}, new HtmlRenderer()).setCaption(sa.getI18n("FileName"));
		
		fileNameColumn.setComparator((s3fileA, s3fileB) -> {
			
			if(s3fileA.isDirectory() && s3fileB.isDirectory()) {
				return s3fileA.getName().compareToIgnoreCase(s3fileB.getName());
			}else if(s3fileA.isDirectory() && !s3fileB.isDirectory()) {
				return -1;
			}else if(!s3fileA.isDirectory() && !s3fileB.isDirectory()) {
				return s3fileA.getName().compareToIgnoreCase(s3fileB.getName());
			}else {
				return 1;
			}
		
		});
		
		setSortOrder(GridSortOrder.asc(fileNameColumn));