bringForward & sendBackward problem with Group

[ncou]

Hi,

There seems to be strange behavior with the sendBackward and bringForward when you use it on groups.

Here is the steps :
http://jsfiddle.net/uV4E2/50/

1. open the fiddle
2. select the text + the red rect to have a group selection
3. click on bringForward 1 time => it's ok the red rect is now over the circle
4. click another time on the bringForward button => The red rect is now over the text object => it's seems ok, even if it's strange the z-index position change in the object group, it seems more logical to increate by 1 each z-index, and keep the order maintened inside the group.
5. try to send backward by clicking the buttons => i doesn't work. impossible to send backward the group.

Same problem if you create the same group, and click 2 times on sendBackward, in this case clicking on the bringForward doesn't do anything.

PS : I also tried with the latest source and there is still this problem. And by the way it seems like the toDataURL is broken, because the thumbnail in my app are always transparent with this lib build version (it was fine with the previous build 5 days ago). It's not an official release so perhaps it's normal and already know by you.

[asturur]

if you destroy and recreate the selection then it works.
Hopefully is a real small thing

[ncou]

yes deselect and recreate the selection seems to reset the possibility to bringForward.

[asturur]

so once objects are swapped, during bring forward/backward the problem occurs.
This happen because they get processed in the group order, but the order on canvas is different.

[asturur]

ok fixed! also the send backwards was affected by same bug.