BCardLayout: all items are visible at start

[X512]

This is hrev54024.

When using following code to build layout, all card items are visible simultaneously at start:

BLayoutBuilder::Group<>(this, B_VERTICAL, 0)
    .AddCards()
        .GetLayout(&fCardLayout)
        .AddGroup(B_VERTICAL, 0)
            .AddGroup(B_HORIZONTAL, 0)
                .Add(fWizardView, 0)
                .Add(fIntroContainerView)
                .End()
            .End()
        .AddGroup(B_VERTICAL, 0)
            .Add(fHeaderContainerView)
            .Add(new BSeparatorView(B_HORIZONTAL))
            .AddGroup(B_VERTICAL, B_USE_DEFAULT_SPACING)
                .SetInsets(B_USE_DEFAULT_SPACING)
                .Add(fLicenseCaption1View, 0)
                .Add(new BScrollView("scrollview", fLicenseView, 0, true, true, B_PLAIN_BORDER))
                .Add(fLicenseCaption2View, 0)
                .End()
            .End()
        .End()
    .End()

Following workaround fixes problem:

fCardLayout->SetVisibleItem(1);
fCardLayout->SetVisibleItem(0);

It seems that BCardLayout don’t handle non-BView items properly.

[X512]

Related discussion: ​https://discuss.haiku-os.org/t/changing-layout-at-runtime/9374/11.

[nielx]

Interestingly enough I just wrote ​documentation about this. It seems like the class is designed to show no item, unless explicitly called with SetVisibleItem. It seems to me that the layout should hide items while they are added.

[pulkomandy]

Does ​https://review.haiku-os.org/c/haiku/+/2683 help with that? It makes the first item visible by default.

[waddlesplash]

Fixed in hrev54194.

[nielx]

Assign tickets with status=closed and resolution=fixed within the R1/beta2 development window to the R1/beta2 Milestone