Off IDE

A high-performance, VS Code-like workspace shell widget for Flutter applications.

Live Demo

Features

• VS Code Layout: Familiar structure with Activity Bar, Sidebar, and Editor Area.
• Split Editor: Support for vertical split panes to view multiple tabs side-by-side.
• Tab Management: Robust tab system with close actions, dirty state indicators, and drag-and-drop support.
• Persistence: Automatic state restoration of open tabs and sidebar state via HydratedBloc.
• Web Ready: Optimized for web deployments with responsive design and persistence support.
• High Performance: Optimized for large widget trees with O(1) state lookups and granular rebuilds.
• Customizable: Fully configurable activity bar, sidebar views, and page registry.
• Theme Aware: Seamlessly integrates with your application's ThemeData, supporting both light and dark modes.

Getting Started

Add off_ide to your pubspec.yaml:

dependencies:
  off_ide: ^0.1.2

Usage

The main entry point is the WorkspaceShell widget, which requires a WorkspaceConfig.

import 'package:flutter/material.dart';
import 'package:off_ide/off_ide.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: WorkspaceShell(
        config: WorkspaceConfig(
          // 1. Define Activity Bar Items
          activityBarItems: [
            const ActivityBarItem(
              id: 'files',
              icon: Icons.folder_outlined,
              label: 'Explorer',
              tooltip: 'Project Files',
            ),
            const ActivityBarItem(
              id: 'settings',
              icon: Icons.settings_outlined,
              label: 'Settings',
            ),
          ],

          // 2. Define Sidebar Content
          sidebarViews: {
            'files': const SidebarView(
              id: 'files',
              title: 'EXPLORER',
              groups: [
                 MenuGroup(
                   id: 'project',
                   label: 'My Project',
                   isExpanded: true,
                   items: [
                     MenuItem(
                       id: 'readme',
                       label: 'README.md',
                       pageId: 'markdown_viewer',
                       pageArgs: {'file': 'README.md'},
                       icon: Icons.description_outlined,
                     ),
                   ],
                 ),
              ],
            ),
          },

          // 3. Register Page Builders
          pageRegistry: {
            'markdown_viewer': (context, args) {
              return Center(child: Text('Viewing ${args?['file']}'));
            },
          },
        ),
      ),
    );
  }
}

Key Concepts

WorkspaceConfig

The central configuration object defining the entire workspace structure. It connects activities to sidebars and menu items to pages.

Activity Bar

The narrow vertical strip on the far left. Items here switch the context of the sidebar (e.g., from File Explorer to Search).

Sidebar

The collapsible panel next to the activity bar. It typically displays hierarchical navigation (MenuGroups and MenuItems) relevant to the active activity.

Split Editor

The main content area. It can display a single view or be split vertically to show multiple tabs at once.

Additional Resources

Check out the example directory for a complete, runnable sample application.

License

MIT