robius-state-management

Robius State Management Skill

Best practices for state management and persistence in Makepad applications based on Robrix and Moly codebases.

Source codebases:

• Robrix: Matrix chat client - AppState, SelectedRoom, persistence via serde
• Moly: AI chat application - Central Store pattern, async initialization, Preferences

When to Use

Use this skill when:

• Designing application state structure
• Implementing state persistence
• Passing state through widget tree
• Managing UI state across sessions
• Keywords: app state, makepad state, persistence, Scope::with_data, save state, load state

Production Patterns

For production-ready state management patterns, see the _base/ directory:

Pattern	Description
06-global-registry	Global widget registry with Cx::set_global
07-radio-navigation	Tab-style navigation with radio buttons
10-state-machine	Enum-based state machine widgets
11-theme-switching	Multi-theme support with apply_over
12-local-persistence	Save/load user preferences

AppState Structure

Core State Definition

use serde::{Serialize, Deserialize};
use std::collections::HashMap;
use matrix_sdk::ruma::OwnedRoomId;

/// App-wide state that is stored persistently across multiple app runs
/// and shared/updated across various parts of the app.
#[derive(Clone, Default, Debug, Ser