bin/simple_browser/lib/src/models/tabs_action.dart

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import '../blocs/webpage_bloc.dart';

// Base class for actions handled by the tabs BLoC
class TabsAction {
  final TabsActionType op;
  const TabsAction(this.op);
}

// Operations allowed for tab management
enum TabsActionType { newTab, removeTab, focusTab, addTab, rearrangeTabs }

// Instructs to add a new tab to tab list.
class NewTabAction extends TabsAction {
  const NewTabAction() : super(TabsActionType.newTab);
}

// Instructs to remove a specific tab.
class RemoveTabAction extends TabsAction {
  final WebPageBloc tab;
  const RemoveTabAction({required this.tab}) : super(TabsActionType.removeTab);
}

// Instructs to focus a specific tab.
class FocusTabAction extends TabsAction {
  final WebPageBloc tab;
  const FocusTabAction({required this.tab}) : super(TabsActionType.focusTab);
}

// Instructs to add an existing tab to the tab list.
class AddTabAction extends TabsAction {
  final WebPageBloc tab;
  const AddTabAction({required this.tab}) : super(TabsActionType.addTab);
}

class RearrangeTabsAction extends TabsAction {
  final int originalIndex;
  final int newIndex;
  const RearrangeTabsAction({
    required this.originalIndex,
    required this.newIndex,
  }) : super(TabsActionType.rearrangeTabs);
}