** No longer affects: ubuntu-ui-toolkit
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https://bugs.launchpad.net/bugs/1276118
Title:
List Item onItemRemoved signal should provide the option to override
its action with a custom one.
Status in “ubuntu-ui-toolkit” package in Ubuntu:
Confirmed
Bug description:
The title is a bit ambigious, let me try to explain in more detail
here. I have been using U1db documents in a listview to retrieve and
display stored listitems. U1db allows you to delete documents by
putDoc(value, docId). So I connected this with the listitem's swipe to
delete method.
delegate: ListItem.Standard {
removable: true
onItemRemoved: {
db.putDoc("", docId)
}
}
The problem here is that when the user swipes delete a delegate, the
listview deletes the delegate which in turn also deletes the u1db
document. This changes the u1db model which is noticed by the listview
and tried to delegate again which is no longer available resulting in
an error.
QQmlVMEMetaObject: Internal error - attempted to evaluate a function in an
invalid context
file:///usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/ListItems/Empty.qml:459:9:
QML ScriptAction: <Unknown File>:
The solution here would be to provide a way to override the default
action of the onItemRemoved signal. This way the deleting action is
only performed once.
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