Added onPop callback

[magicleon94]

Status

READY

Breaking Changes

NO

Description

This callback gets called whenever a page is popped and can be used to notify the state manager that something has occurred. An example of how it can be used with bloc can be found here.

Type of Change

• [x] ✨ New feature (non-breaking change which adds functionality)
• [ ] 🛠️ Bug fix (non-breaking change which fixes an issue)
• [ ] ❌ Breaking change (fix or feature that would cause existing functionality to change)
• [ ] 🧹 Code refactor
• [ ] ✅ Build configuration change
• [ ] 📝 Documentation
• [ ] 🗑️ Chore
• [ ] 🧪 Testing

[felangel]

@magicleon94 closing this in favor of exposing a public FlowController which you can use to notify others of changes in the flow state

class _MyWidgetState extends State<MyWidget> {
  FlowController<MyFlowState> _controller;

  @override
  void initState() {
    super.initState();
    _controller = FlowController(MyFlowState.initial())..addListener(_onFlowStateChanged);
  }

  void _onFlowStateChanged() {
    final state = context.flow<MyFlowState>().state;
    // notify other components of a change in flow state
  }

  @override
  Widget build(BuildContext context) {
    return FlowBuilder(
      controller: _controller,
      onGeneratePages: ...,
    );
  }

  @override
  void dispose() {
    _controller
      ..removeListener(_onFlowStateChanged)
      ..dispose();
    super.dispose();
  }
}

Hope that helps 👍

[magicleon94]

I think this is gonna help for sure! Thank you a lot for this!