TextEdit on ListView don't keep text after scrolling.

MathArtist

I added a "video":https://www.youtube.com/watch?v=1sHKnNZLzhs of the problem.
I also tried on macosx and get the same behavior.

dasRicardo

Hmmm, sounds like a bug i havn't test it so massivly. Whats your goal for this construct? What's your ui idea behind this?

MathArtist

I added a video of the problem in the first post of this thread.
I also tried on macosx and get the same behavior.

dasRicardo

Can't reproduce this sorry, maybe graphics driver bug?

MathArtist

[quote author="dasRicardo" date="1412026473"]Hmmm, sounds like a bug i havn't test it so massivly. Whats your goal for this construct? What's your ui idea behind this?[/quote]

My goal is to make a survey app. so you define some questions. the list say question and have some space for input the data.
Like name, last name, age, address, opinion... etc etc

the real app is more complex but for the forum I just make a simple test code with the minimal elements to reproduce the problem.

MathArtist

[quote author="dasRicardo" date="1412026795"]Can't reproduce this sorry, maybe graphics driver bug?[/quote]

I think this is not a graphic driver issue, because I have same result on Mac with Nvidia graphics, suse linux with intel graphics, and various android phones and tablet from different vendors.

dasRicardo

Hmm, but i think a list is the wrong component for you. Have you try to simply add some input into a flickable container and test if it produce the same result?

hmuelner

From the documentation of ListView ("http://qt-project.org/doc/qt-5/qml-qtquick-listview.html#delegate-prop":http://qt-project.org/doc/qt-5/qml-qtquick-listview.html#delegate-prop):

Note: Delegates are instantiated as needed and may be destroyed at any time. They are parented to ListView's contentItem, not to the view itself. State should never be stored in a delegate.

You should map the text of your TextEdit to a property of the ListElements in your ListModel.

Torgeir

The bug is in your delegate. Documentation for ListView says:

bq. Delegates are instantiated as needed and may be destroyed at any time. They are parented to ListView's contentItem, not to the view itself. State should never be stored in a delegate.

When your delegate contains a TextEdit and you don't store the edited text somewhere, it will be lost when the delegate is destroyed/recreated.

MathArtist

Thanks, for the info.

What can be a good workarround or a proper workflow for my app?

Suggestions are welcome.