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[Zoltan Balogh <zoltan.balogh@xxxxxxxxxxxxx>]

** 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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