The contents of the page is done with a simple page that becomes visible or not. The easiest solution I could think of. No StackLayout necessary here.
Contributes to issue CURA-8686.
This was a bit of a doozy. One was really simple but the other one had me stumped for a while: The Controls2 version doesn't have the viewport property any more, so just use the width.
Contributes to issue CURA-8686.
It was not being displayed with Qt 5.15 due to the following error:
MaterialsView.qml:34:5: Unable to assign QStringList to QString
This is correct. And it should not just concatenate all of these material names; it should add a comma between them for human-readable display in the text label above the button.
Fixes#10235.
Just like MaterialManager used to be. There can be only one instance of the page then.
This prevents a crash when Qt deletes the QObject because it's no longer used in the page when you close the preferences screen. But when you open it again it doesn't construct a new one. Now there is always one instance so that's not a problem any more. Also it allows other pages to access this item.
Contributes to issue CURA-6600.
correctly selected when there is more than one brand (stupid mistake).
Also fix problems when the user changes some material information.
Contributes to CURA-5682.
