What is the 'Neural Link'?

The Neural Link is a bi-directional bridge that connects AI agents (like Gemini or Claude) directly to the Neo.mjs runtime. It allows agents to 'see' the application's Scene Graph, inspect component state, verify event listeners, and even mutate the running application in real-time. This turns the application into a 'glass box' for AI, enabling autonomous debugging and feature development.

Why is Neo.mjs called an 'Application Engine' instead of a framework?

Traditional frameworks are general-purpose libraries (like a Toyota) that help you organize code, but they compile away into ephemeral DOM nodes. Neo.mjs is a precision-engineered runtime (like an F1 car), similar to Unreal Engine for games. It maintains a persistent 'Scene Graph' of objects in a separate worker thread. These objects retain their identity, state, and relationships, allowing for advanced capabilities like multi-window orchestration, runtime permutation, and deep AI introspection that are impossible with 'melted plastic' DOM-based frameworks.

What is 'Context Engineering'?

Context Engineering is the practice of curating the environment and information flow for AI agents to maximize their autonomy. In Neo.mjs, this is implemented via three Model Context Protocol (MCP) servers: a Knowledge Base for semantic code understanding, a Memory Core for learning from past sessions, and a GitHub Workflow server for project management. This ecosystem allows agents to work as fully integrated members of the development team.

What is 'Object Permanence' in the context of Neo.mjs?

In Neo.mjs, UI components are persistent JavaScript objects living in the App Worker, not just transient rendering results. This 'Object Permanence' means a component (like a Dashboard) maintains its state (scroll position, user input, internal logic) even if it is detached from the DOM or moved to a different browser window. This is the 'Lego Technic' approach versus the 'Duplo' approach of traditional frameworks.

What is an 'Agent Operating System'?

Neo.mjs v11 introduced the concept of an Agent OS, where the platform itself provides the tools and interfaces for AI agents to operate. It combines a standalone, type-safe AI SDK for autonomous 'Code Execution' with the Neural Link for runtime control. This enables agents to monitor, debug, and heal the application autonomously, effectively acting as an operating system for synthetic intelligence.

How does Neo.mjs handle multi-window applications?

Neo.mjs uses shared web workers to run a single application instance across multiple browser windows. All windows share the same application state and data in real-time. Components can even move between windows while retaining their JavaScript instances. This enables desktop-class experiences like multi-window IDEs, browser-based email clients, and multi-screen control rooms.

What makes Neo.mjs different from React, Angular, or Vue?

Neo.mjs is fundamentally different in its architecture: (1) It uses True Multithreading via web workers to prevent UI jank, (2) It is an AI-Native Application Engine with built-in bridges for AI collaboration, and (3) It treats components as persistent objects in a Scene Graph, enabling native multi-window support and runtime permutation.

Frontmatter

id	8911
title	Enable Mouse Drag Scrolling in Grid ScrollManager
state	Closed
labels	aifeature
assignees	tobiu
createdAt	Jan 30, 2026, 11:49 AM
updatedAt	Jan 30, 2026, 12:33 PM
githubUrl	https://github.com/neomjs/neo/issues/8911
author	tobiu
commentsCount	1
parentIssue	null
subIssues	[]
subIssuesCompleted	0
subIssuesTotal	0
blockedBy	[]
blocking	[]
closedAt	Jan 30, 2026, 12:32 PM

Enable Mouse Drag Scrolling in Grid ScrollManager

Name: Neo.mjs Application Engine
Author: Neo.mjs

Closed v11.24.0 aifeature

tobiu commented on Jan 30, 2026, 11:49 AM

Enhance Neo.grid.ScrollManager to support mouse-based drag-to-scroll on desktop, improving DX for users without horizontal scroll wheels.

Requirements:

Add mousedown, mousemove, mouseup, and mouseleave listeners to gridBody.
Implement onMouseDown, onMouseMove, onMouseUp, onMouseLeave handlers in ScrollManager.
Calculate deltaX and deltaY from mouse movements and apply them via DomAccess.scrollTo, mirroring the existing touch logic.
Add mouseDragScroll_ config (default: true) to toggle this feature.
Ensure native text selection is prevented during drag (preventDefault) to give a "Hand Tool" feel.
Important: mousemove listener must be registered with local: true to avoid flooding the worker bridge.

Architecture: This implementation remains isolated within ScrollManager and does not require enabling the global Touch sensor on desktop, avoiding conflicts with the main DragDrop system.

tobiu added the ai label on Jan 30, 2026, 11:49 AM

tobiu added the feature label on Jan 30, 2026, 11:49 AM

tobiu assigned to @tobiu on Jan 30, 2026, 12:31 PM

tobiu closed this issue on Jan 30, 2026, 12:32 PM

tobiu referenced in commit 47894ff - "feat: Enable Mouse Drag Scrolling in Grid ScrollManager (#8911)" on Jan 30, 2026, 12:32 PM

tobiu Jan 30, 2026, 12:33 PM

Input from Gemini 3 Pro:

✦ I have implemented the mouse drag scrolling enhancements in src/grid/ScrollManager.mjs.

Changes:

Mouse Listener Support: Added mousedown, mousemove (local), mouseup, and mouseleave listeners to gridBody in construct.

Unified Delta Logic: Implemented onMouseDown, onMouseMove, onMouseUp, onMouseLeave to handle drag-to-scroll logic, mirroring the touch implementation but isolated for mouse events.

Config: Added mouseDragScroll_ (default true) to toggle the feature.

Added afterSetMouseDragScroll to toggle the neo-mouse-drag-scroll class on the body.

Updated resources/scss/src/grid/Body.scss to disable user-select when this class is present.

Touch Conflict Resolution: Added logic in construct to automatically set mouseDragScroll = false if Neo.config.hasTouchEvents is detected, preventing conflicts on hybrid devices.

State: Added isMouseDragging, lastMouseX, lastMouseY to track drag state.

This implementation allows users to scroll the grid by dragging with the mouse, improving DX for users without horizontal scrolling hardware.

Closing the ticket.