This package is an alternative to IndexedStack, that supports lazy loading with some additional customization.

Features

  • Defer initialization of specific tabs until user opens them
  • Explicitly set the defer duration of some tabs
  • Explicitly initialize some tabs when needed

Usage

deferred_indexed_stack: ^0.0.4

final _controller = DeferredIndexedStackController();

...

DeferredIndexedStack(
  controller: _controller,
  index: _index,
  children: [
    // This tab is not deferred
    DashboardTab(stackController: _controller),

    // This tab will initialize when opened by user
    // or by _controller.initChildById('tab_a')
    // or by _controller.initChildAt(1)
    const DeferredTab(
      id: 'tab_a',
      child: SomeLayout(
        name: 'Tab A',
        text: "Deferred tab A",
      ),
    ),

    // This tab will initialize when opened by user
    // or after 10 seconds
    // or by _controller.initChildById('tab_b')
    // or by _controller.initChildAt(2)
    const DeferredTab(
      id: 'tab_b',
      deferredFor: Duration(seconds: 10),
      child: SomeLayout(
        name: 'Tab B',
        text: "Init on button click or 10 seconds",
      ),
    ),

    // This tab will initialize when opened by user
    const DeferredTab(
      child: SomeLayout(
        name: 'Tab C',
        text: "This tab initializes when opened",
      ),
    ),
  ],
)

Libraries

deferred_indexed_stack