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  1. Qt
  2. QTBUG-44143

QIdentityProxyModel does not properly handle/propagate 'layoutAboutToBeChanged' signal from the source model.

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Details

    • Bug
    • Resolution: Duplicate
    • Not Evaluated
    • 5.8
    • 4.8.6
    • Widgets: Itemviews
    • None
    • baad82d242a4d8c1af6c87faaa7f25584183fd53

    Description

      QIdentityProxyModel does not properly handle/propagate 'layoutAboutToBeChanged' signal from the source model.
      In particular it stores it's persistent index list before emitting the layoutAboutToBeChanged signal and therefore before an attached views can actually store/retrieve the persistent indexes from the model. This (among other things) breaks item view's selection when sorting the source model.

      The fix should be simple, just move the q->layoutAboutToBeChanged(); line in QIdentityProxyModelPrivate::_q_sourceLayoutAboutToBeChanged
      before the for loop.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-32981 QIdentityProxyModel not working when chained with a QSortFilterProxyModel

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

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            People

              chehrlic Christian Ehrlicher
              aleserjavec Ales Erjavec
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              Dates

                Created:
                Updated:
                Resolved: