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Introduction

pipes allows you (app developer) or other package developers to push and listen to in app events , needs a callback when a pages pushed add a listener or more if needed, needs a callback when theme changes here you go , its easy ... and so on

How Pipes Work

QEvent​

base class for all events

abstract class ThemeChangedEvent extends QEvent {
   final ThemeData newTheme;

   ThemeChangedEvent(this.newTheme) : super();
}

QListener​

base class for all listeners

abstract class ThemeChangesListener extends QListener<ThemeChangedEvent> {
  Future<void> onOccurred(ThemeChangedEvent event){
    print('this will be triggered when a ThemeChangedEvent pushed to the pipes !');
  }
 }

Add new Event to the pipes​

Pipes.sink(ThemeChangedEvent());

register a listener for event​

Pipes.on<ThemeChangedEvent>(ThemeChangesListener());

remove a listener from the pipes​

Pipes.remove<ThemeChangesListener>();