rev2045 changes the order in which Scrollbar anchors to the flickable.
since r2045 it waits for the flickable to be initialized before
anchoring to it.
before:
Scrollbar anchors to flickable. Flickable parent changes, engine says nothing.
now:
Flickable is initialized, its parent changes. Scrollbar waits for flickable to
be initialized, then anchors to it. QML engine notices that Flickable is not a
sibling/parent, and warns about failed anchoring
My opinion:
I think we should double and triplecheck if we really need the flickable parent
hack, otherwise we should remove it. An alternative could be to try and change
the scrollbar parent at the same as the flickable parent changes, but I'm not
sure that's going to prevent the warning from showing, as there should still be
a moment when Flickable and Scrollbar are anchored but not in a relationship
that allows anchoring one to the other.
** Changed in: ubuntu-ui-toolkit (Ubuntu)
Assignee: Andrea Bernabei (faenil) => Zsombor Egri (zsombi)
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https://bugs.launchpad.net/bugs/1620991
Title:
Anchoring warnings in Buttons page in UITK Gallery
Status in ubuntu-ui-toolkit package in Ubuntu:
Confirmed
Bug description:
ubuntu-ui-toolkit/staging, r2090
1) Build uitk
2) run gallery with ./gallery.sh
3) Open Buttons page
Expected outcome:
no warnings
Actual outcome:
A few "QML Scrollbar: Cannot anchor to an item that isn't a parent or
sibling."
Explanation:
That happens because Scrollbar anchors to the flickable item, but the
ComboButton code has a hack that changes the parent of the Flickable to
actually be Flickable's child. As a consequence Flickable is not a sibling of
the scrollbar anymore, thus producing the anchor-related warning.
See http://bazaar.launchpad.net/~ubuntu-sdk-team/ubuntu-ui-
toolkit/staging/annotate/2090/src/Ubuntu/Components/1.3/ComboButton.qml#L354
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