Tree getAbsoluteLeft()/getAbsoluteTop() doesn't return correct values?

[dankurka]

Originally reported on Google Code with ID 39

GWT Release:
1.1.10

Browser or OS version (if applicable):

Detailed description:

Reporter sets position of tree to 5,5 in root container, but Tree reports
its position as 5,25 when queried.

Example code showing the problem (strongly preferred):

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class ImageViewer implements EntryPoint {
        private CheckBox m_checkBox;
        private Tree m_tree;
        public void onModuleLoad() {
                RootPanel rootPanel = RootPanel.get();
                {
                        m_tree = new Tree();
                        rootPanel.add(m_tree, 5, 5);
                }
                {
                        final Button button = new Button();
                        rootPanel.add(button, 192, 225);
                        button.addClickListener(new ButtonClickListener());
                        button.setText("Show tree location");
                }
                {
                        m_checkBox = new CheckBox();
                        rootPanel.add(m_checkBox, 200, 5);
                        m_checkBox.setText("New CheckBox");
                }
                {
                        final Button showCheckboxLocationButton = new Button();
                        rootPanel.add(showCheckboxLocationButton, 192, 260);
                        showCheckboxLocationButton.addClickListener(new
ShowCheckboxLocationButtonClickListener());
                        showCheckboxLocationButton.setText("Show CheckBox
location");
                }
        }
        private class ButtonClickListener implements ClickListener {
                public void onClick(Widget sender) {
                        System.out.println("tree location: " +
m_tree.getAbsoluteLeft() + ",
" + m_tree.getAbsoluteTop());
                }
        }
        private class ShowCheckboxLocationButtonClickListener implements
ClickListener {
                public void onClick(Widget sender) {
                        System.out.println("checkBox location: "
                                + m_checkBox.getAbsoluteLeft()
                                + ", "
                                + m_checkBox.getAbsoluteTop());
                } 
}

Workaround if you have one:

Links to the relevant discussion group topics (optional):
http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/d9408e43f15b4053

Reported by gwt.team.vli on 2006-09-20 06:59:11

[dankurka]

The problem is that IE starts its window at 2,2 rather than 0,0 
http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/reference/methods/getboundingclientrect.asp

Reported by gwt.team.ecc on 2006-09-25 14:16:20

[dankurka]

Fixed by added -2 to getAbsoluteLeft and getAbsoluteTop

Reported by gwt.team.ecc on 2006-09-26 18:31:23

[dankurka]

Reported by gwt.team.ecc on 2006-09-26 18:31:47

• Status changed: FixedNotReleased

[dankurka]

  I am not sure that this is correct fix.

1. I use IE6 and problems in MSDN tells that (2,2) is reported on IE5
2. Different is not (2,2), but (0,20).

Reported by Konstantin.Scheglov on 2006-09-29 08:22:42

[dankurka]

The implementation of getAbsoluteLeft had already changed before this bug was looked
at. By the time this bug was repro'd, the tests were only 2 off. I would be very
curious if the following fix, patched into DOMImplIE6, does not work for you.

public native int getAbsoluteLeft(Element elem) /*-{
    // Offset needed as IE starts the window's upper left as 2,2 rather than 0,0
    return elem.getBoundingClientRect().left - 2;
  }-*/;   

Reported by gwt.team.ecc on 2006-10-09 11:31:37

• Labels added: Milestone-1_2_Final

[dankurka]

Minor detail, shouldn't it be Milestone-1_2_RC?

Reported by ismaelj on 2006-10-20 01:22:22

[dankurka]

Reported by gwt.team.bruce on 2006-10-23 16:27:38

• Labels added: Milestone-1_2_RC
• Labels removed: Release-1.1.10, Milestone-1_2_Final

[dankurka]

Reported by gwt.team.jgw on 2006-10-31 17:00:26

• Status changed: Fixed

[dankurka]

Just for future reference, it appears that the (2, 2) offset can be found in the
clientLeft/clientTop on the documentElement (standard mode) or body (quirks mode)
element.

In other words either in standard mode:
  $doc.documentElement.clientLeft == 2
  $doc.documentElement.clientTop  == 2

And in quirks mode:
  $doc.body.clientLeft == 2
  $doc.body.clientTop  == 2

Reported by fredsa on 2007-03-06 19:52:43

[dankurka]

Reported by sumitchandel+legacy@google.com on 2008-05-02 02:32:22

[dankurka]

Reported by rjrjr@google.com on 2011-02-09 00:10:59

• Labels added: Milestone-1_2-RC
• Labels removed: Milestone-1_2_RC