gpui-context

Agent Skills › feigeCode/navop › gpui-context

gpui-context

GitHub

GPUI框架上下文管理指南，涵盖App、Window、Context及异步上下文的层级关系与核心操作，用于指导UI渲染、实体管理及异步任务开发。

.codex/skills/gpui-context/SKILL.md feigeCode/navop

Trigger Scenarios

使用GPUI进行前端组件开发处理GPUI应用中的窗口状态或实体更新需要在GPUI中执行异步UI操作

Install

npx skills add feigeCode/navop --skill gpui-context -g -y

More Options

Non-standard path

npx skills add https://github.com/feigeCode/navop/tree/dev/.codex/skills/gpui-context -g -y

Use without installing

npx skills use feigeCode/navop@gpui-context

指定 Agent (Claude Code)

npx skills add feigeCode/navop --skill gpui-context -a claude-code -g -y

安装 repo 全部 skill

npx skills add feigeCode/navop --all -g -y

预览 repo 内 skill

npx skills add feigeCode/navop --list

SKILL.md

Frontmatter

{
    "name": "gpui-context",
    "description": "Context management in GPUI including App, Window, and AsyncApp. Use when working with contexts, entity updates, or window operations. Different context types provide different capabilities for UI rendering, entity management, and async operations."
}

Overview

GPUI uses different context types for different scenarios:

Context Types:

App: Global app state, entity creation
Window: Window-specific operations, painting, layout
Context<T>: Entity-specific context for component T
AsyncApp: Async context for foreground tasks
AsyncWindowContext: Async context with window access

Quick Start

Context<T> - Component Context

impl MyComponent {
    fn update_state(&mut self, cx: &mut Context<Self>) {
        self.value = 42;
        cx.notify(); // Trigger re-render

        // Spawn async task
        cx.spawn(async move |cx| {
            // Async work
        }).detach();

        // Get current entity
        let entity = cx.entity();
    }
}

App - Global Context

fn main() {
    let app = Application::new();
    app.run(|cx: &mut App| {
        // Create entities
        let entity = cx.new(|cx| MyState::default());

        // Open windows
        cx.open_window(WindowOptions::default(), |window, cx| {
            cx.new(|cx| Root::new(view, window, cx))
        });
    });
}

Window - Window Context

impl Render for MyView {
    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
        // Window operations
        let is_focused = window.is_window_focused();
        let bounds = window.bounds();

        div().child("Content")
    }
}

AsyncApp - Async Context

cx.spawn(async move |cx: &mut AsyncApp| {
    let data = fetch_data().await;

    entity.update(cx, |state, inner_cx| {
        state.data = data;
        inner_cx.notify();
    }).ok();
}).detach();

Common Operations

Entity Operations

// Create entity
let entity = cx.new(|cx| MyState::default());

// Update entity
entity.update(cx, |state, cx| {
    state.value = 42;
    cx.notify();
});

// Read entity
let value = entity.read(cx).value;

Notifications and Events

// Trigger re-render
cx.notify();

// Emit event
cx.emit(MyEvent::Updated);

// Observe entity
cx.observe(&entity, |this, observed, cx| {
    // React to changes
}).detach();

// Subscribe to events
cx.subscribe(&entity, |this, source, event, cx| {
    // Handle event
}).detach();

Window Operations

// Window state
let focused = window.is_window_focused();
let bounds = window.bounds();
let scale = window.scale_factor();

// Close window
window.remove_window();

Async Operations

// Spawn foreground task
cx.spawn(async move |cx| {
    // Async work with entity access
}).detach();

// Spawn background task
cx.background_spawn(async move {
    // Heavy computation
}).detach();

Context Hierarchy

App (Global)
  └─ Window (Per-window)
       └─ Context<T> (Per-component)
            └─ AsyncApp (In async tasks)
                 └─ AsyncWindowContext (Async + Window)

Reference Documentation

API Reference: See api-reference.md
- Complete context API, methods, conversions
- Entity operations, window operations
- Async contexts, best practices