** Changed in: canonical-devices-system-image
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1566231
Title:
When changing Page.header, set previous header.parent to null.
Status in Canonical System Image:
Fix Committed
Status in ubuntu-ui-toolkit package in Ubuntu:
Fix Committed
Status in ubuntu-ui-toolkit package in Ubuntu RTM:
Fix Released
Bug description:
Currently when Page.header = header1, and then you set Page.header =
header2, header1.parent will be reverted to the parent that header1
had before it was assigned to Page.header (and thus re-parented to
that page).
Motivation: You want only one header at the same time to touch the
topMargins of a flickable. We will not set the flickable margins for a
header that is not visible or has parent null. So unsetting the parent
when the header is no longer active will revert the flickable margins.
Here we choose to change header.parent because header.visible may have
other bindings that we do not need to break this way.
Note: There will be no ownership transfer. We are changing the
parentItem, not the QObject parent.
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