Bug 195032

Description Andrew Eisenberg 2007-06-30 16:56:45 EDT

Build ID: 3.3

Steps To Reproduce:
1. Compile and execute the code below
2. Press carriage return
3. Both the Yellow label and the red label scrolls with each carriage return.
4. Press any other key.
5. Neither label scrolls

To me this seems to be strange.  Why should all controls move on carriage returns, but nothing else?

I would like to see one of the following:

1. no control moves on carriage return (movement of controls with respect to text modification should be controlled explicitly through listeners, etc)

2. only controls that are below the caret position should be scrolled

3. options to configure the behavior of how and when embedded controls scroll.

thanks.

More information:
public class SWTPlaying {

  public static void main(String[] args) {
    Display d = new Display();
    final Shell s = new Shell(d);
    s.setSize(400, 400);
    s.setText("Styled Text Scroll Test");

    StyledText t = new StyledText(s, 0);
    t.setSize(400, 400);
    
    Label l1 = new Label(t, 0);
    l1.setBackground(new Color(Display.getDefault(), new RGB(255,0,0)));
    l1.setLocation(50, 200);
    l1.setSize(50, 50);

    Label l2 = new Label(t, 0);
    l2.setBackground(new Color(Display.getDefault(), new RGB(255,255,0)));
    l2.setLocation(50, 0);
    l2.setSize(50, 50);
    
    t.setText("line1\nline2\nline3\nline4\nline5\n");

    
    
    s.open();
    while (!s.isDisposed())
      while (!d.readAndDispatch())
        d.sleep();
  }

}