Blinking background rows of TableViewer or TreeViewer in SWT

eclipse-rcp, java, swt

Solution

I would do something similar to this. Update the elements that you need to change the colors for at a regular interval. At each update toggle the colors depending on how you want them to flash.

void scheduleColorChange(final Color colors[], final int startIndex, final int changeInterval)
{
  getDisplay().timerExec(changeInterval, new Runnable()
  {
    public void run()
    {
      Object[] elements = getColorChangingElements();
      setColorsForFlashingElements(elements, colors[index%colors.length]);
      getViewer().update(elements);
      scheduleColorChange(colors, startIndex+1, changeInterval)
    }
  });
}

and the have you label provider implement IColorProvider.

Problem

I need the ability to have a blinking (red, maybe more colors) background for rows in a TableViewer/TreeViewer. What are the best options? There may be more than one row blinking, the blinking MUST be synchron and I need two blinking modes, fast and slow.

Original source