Oberoende stackar per flik

DeclarativeTabsScaffold keeps each tab's page list independent while preserving declarative updates.

Nasta: Back-hantering Tillbaka till Overlays

Fliklokala sidlistor

Manage Map<TabId, List<PageEntry>> for predictable tab navigation state.

Overlay per skarm

Use TabPageKey = (TabId, pageKey) to scope overlay state for each tab screen.

Konsekvent back-ordning

Overlay -> pop av flikstacken -> forsta fliken -> onBackAtRoot.

Monster for fliks-skalet

Forbered root-sidor per flik och styr alla flikhandelser via state-uppdateringar.

Tabb-overlaykarta

DeclarativeTabsScaffold

const tabHome = TabId('home');
const tabSettings = TabId('settings');

final pagesByTab = <TabId, List<PageEntry>>{
  tabHome: [const PageEntry(key: 'home', name: '/home')],
  tabSettings: [const PageEntry(key: 'settings', name: '/settings')],
};

return DeclarativeTabsScaffold(
  items: items,
  currentTab: currentTab,
  onSelectTab: _selectTab,
  pagesByTab: pagesByTab,
  setPagesForTab: _setPagesForTab,
  buildPage: _buildTabPage,
);

Begransning

For varje flik, pagesByTab[tab] maste forbli icke-tomt eftersom root-sidan kravs for stabilt navigationsbeteende.

Foregaende

Overlays

Nasta

Back-hantering