org.eclipse.swt.widgets.Table#getSortDirection ( )源码实例Demo

@Override
public void widgetSelected ( final SelectionEvent e )
{
    final Table table = this.tableViewer.getTable ();
    final TableColumn newColumn = (TableColumn)e.widget;
    final TableColumn currentColumn = table.getSortColumn ();

    final int currentDir = table.getSortDirection ();
    int newDir = SWT.UP;
    if ( newColumn == currentColumn )
    {
        newDir = currentDir == SWT.UP ? SWT.DOWN : SWT.UP;
    }
    else
    {
        table.setSortColumn ( newColumn );
    }
    table.setSortDirection ( newDir );
    this.tableViewer.setSorter ( new Sorter ( (Columns)newColumn.getData ( COLUMN_KEY ), newDir ) );
}
 

@Override
public void widgetSelected ( final SelectionEvent e )
{
    final Table table = this.tableViewer.getTable ();
    final TableColumn newColumn = (TableColumn)e.widget;
    final TableColumn currentColumn = table.getSortColumn ();

    final EventTableColumn column = (EventTableColumn)newColumn.getData ( COLUMN_KEY );
    if ( column == EventTableColumn.reservedColumnSourceTimestamp || column == EventTableColumn.reservedColumnEntryTimestamp )
    {
        final int currentDir = table.getSortDirection ();
        int newDir = SWT.UP;
        if ( newColumn == currentColumn )
        {
            newDir = currentDir == SWT.UP ? SWT.DOWN : SWT.UP;
        }
        else
        {
            table.setSortColumn ( newColumn );
        }
        table.setSortDirection ( newDir );
        this.tableViewer.setSorter ( new EventTableSorter ( column, newDir ) );
    }
}
 

@SuppressWarnings({
	"rawtypes", "unchecked"
})
private int compareElements(Object e1, Object e2){
	IColumnContentProvider columnValueProvider =
		(IColumnContentProvider) tableViewer.getContentProvider();
	
	Table table = tableViewer.getTable();
	
	int index = Arrays.asList(table.getColumns()).indexOf(table.getSortColumn());
	int result = 0;
	if (index != -1) {
		Comparable c1 = columnValueProvider.getValue(e1, index);
		Comparable c2 = columnValueProvider.getValue(e2, index);
		if (c1 instanceof String && c2 instanceof String) {
			String _c1 = (String) c1;
			String _c2 = (String) c2;
			result = _c1.compareToIgnoreCase(_c2);
		} else {
			result = c1.compareTo(c2);
		}
	}
	
	return table.getSortDirection() == SWT.UP ? result : -result;
}
 

@Override
public int compare(final Viewer viewer, final Object e1, final Object e2) {
	final ActionInformationItem a1 = (ActionInformationItem) e1;
	final ActionInformationItem a2 = (ActionInformationItem) e2;

	final Table table = (Table) viewer.getControl();
	final TableColumn sortColumn = table.getSortColumn();
	if (sortColumn == null) {
		// a) Compare by distinct states first (we want actions with zero distinct states
		// to appear at the top).
		if (Long.compare(a1.getUnseen(), a2.getUnseen()) == 0L) {
			// b) Compare by location
			return a1.getModuleLocation().compareTo(a2.getModuleLocation());
		} else {
			return Long.compare(a1.getUnseen(), a2.getUnseen());
		}
	} else {
		// User requested to sort a specific column up or down.
		@SuppressWarnings("unchecked")
		final Comparator<ActionInformationItem> comp = (Comparator<ActionInformationItem>) sortColumn
				.getData(CoverageLabelProvider.COVERAGE_COMPARATOR);
		if (table.getSortDirection() == SWT.UP) {
			return comp.compare(a2, a1);
		} else {
			return comp.compare(a1, a2);
		}
	}
}
 

private int getSortDirection(TableColumn column) {
  Table tableControl = (Table) kindViewer.getControl();
  if (column != tableControl.getSortColumn()) {
    return SWT.DOWN;
  }
  // If it is unsorted (SWT.NONE), assume down sort
  return (SWT.DOWN == tableControl.getSortDirection())
      ? SWT.UP : SWT.DOWN;
}
 

private int getSortDirection(TableColumn column) {
  Table tableControl = (Table) propViewer.getControl();
  if (column != tableControl.getSortColumn()) {
    return SWT.DOWN;
  }
  // If it is unsorted (SWT.NONE), assume down sort
  return (SWT.DOWN == tableControl.getSortDirection())
      ? SWT.UP : SWT.DOWN;
}
 

private int getSortDirection(TableColumn column) {
  Table tableControl = (Table) propViewer.getControl();
  if (column != tableControl.getSortColumn()) {
    return SWT.DOWN;
  }
  // If it is unsorted (SWT.NONE), assume down sort
  return (SWT.DOWN == tableControl.getSortDirection())
      ? SWT.UP : SWT.DOWN;
}
 

private int getSortDirection(TableColumn column) {
  Table tableControl = (Table) relSetViewer.getControl();
  if (column != tableControl.getSortColumn()) {
    return SWT.DOWN;
  }
  // If it is unsorted (SWT.NONE), assume down sort
  return (SWT.DOWN == tableControl.getSortDirection())
      ? SWT.UP : SWT.DOWN;
}
 

private int compareElements(Object e1, Object e2) {
	Table table = tableViewer.getTable();
	int index = Arrays.asList(table.getColumns()).indexOf(table.getSortColumn());
	int result = 0;
	if (index != -1) {
		Comparable c1 = ((TableLine)e1).getValueOf(index);
		Comparable c2 = ((TableLine)e2).getValueOf(index);
		result = c1.compareTo(c2);
	}
	return table.getSortDirection() == SWT.UP ? result : -result;
}
 

public static void sortTable(Table table, TableColumn column) {
	TableItem[] items = table.getItems();
	int rows = items.length;
	int dir = table.getSortDirection() == SWT.DOWN ? 1 : -1;
	TableColumn currentColumn = table.getSortColumn();
	int columnNum = 0;
	for (int j = 0; j < table.getColumnCount(); j++) {
		if (table.getColumn(j).equals(column)) {
			columnNum = j;
			break;
		}
	}
	if (column.equals(currentColumn))
		dir = -dir;
	else
		dir = 1;

	// sort an index map, then move the actual rows
	int[] map = new int[rows];
	for (int i = 0; i < rows; i++)
		map[i] = i;

	for (int i = 0; i < rows - 1; i++) {
		for (int j = i + 1; j < rows; j++) {
			TableItem a = items[map[i]];
			TableItem b = items[map[j]];
			if ((a.getText(columnNum).toLowerCase().compareTo(b.getText(columnNum).toLowerCase()) * dir > 0)) {
				int t = map[i];
				map[i] = map[j];
				map[j] = t;
			}
		}
	}

	// can't move existing items or delete first, so append new items to the end and then delete existing rows
	for (int i = 0; i < rows; i++) {
		int n = map[i];
		TableItem item = new TableItem(table, SWT.NONE);
		for (int j = 0; j < table.getColumnCount(); j++) {
			item.setText(j, items[n].getText(j));
		}
		item.setData(items[n].getData());
		items[n].dispose();
	}

	table.setSortDirection(dir == 1 ? SWT.DOWN : SWT.UP);
	table.setSortColumn(column);
}