Module managers 

Scroll, hover, clipboard, cursor, and focus managers. Manager types responsible for stateful input and UI concerns.

This module collects managers for accessibility, clipboard, drag-and-drop, focus/cursor, gestures, hover, scroll state, selection, text editing, text input, undo/redo, and virtual views. These managers are consumed primarily by layout/src/window.rs and layout/src/event_determination.rs.

NodeId staleness — read this before adding a manager

A NodeId is an INDEX into the current DOM arena, not a stable identity. Every DOM rebuild (virtual-view re-invocation, window resize, route switch, any regenerate_layout) renumbers them. Reconciliation (azul_core::diff::reconcile_dom) tells us how: node_moves maps every MATCHED old NodeId to its new one. An old NodeId that is absent from that map was UNMOUNTED.

Any manager that keys state by NodeId and does not participate in that remap ends up pointing at a live but wrong node — deleting a preceding sibling shifts every following index down by one, so the state silently re-attaches to a different element (no dangling id, no panic, no error). Unmapped keys also leak forever.

The fix is structural: every node-keyed manager implements [NodeIdRemap], and crate::window::LayoutWindow::remap_node_ids (exhaustively destructured, so a NEW FIELD IS A COMPILE ERROR until it is classified) drives all of them from one place.

Modules

a11y

Accessibility Manager for integrating with accesskit.

a11y_snapshot

Platform-neutral a11y element list for the shells accesskit does not cover (iOS / Android). Gated with the same feature as a11y itself. Platform-neutral accessibility snapshot.

biometric

Biometric manager — cross-platform state for the biometric-auth surface (SUPER_PLAN_2 §1 feature 4 + research/02).

changeset

Text editing changeset system

clipboard

Clipboard Manager

drag_drop

Node drag-and-drop view types (DragState / DragType).

file_drop

File drag & drop management

focus_cursor

Focus and tab navigation management.

gamepad

Gamepad manager — cross-platform state for the controller surface (SUPER_PLAN_2 §1 feature 6 + research/03).

geolocation

Geolocation manager — cross-platform state for the GPS/location surface (SUPER_PLAN_2 §1.5 + research/04 §3 + research/08 §6).

gesture

Gesture and drag manager for multi-frame gestures and drag operations.

gpu_state

Centralized GPU state management.

hover

Hover state management for tracking mouse and touch hover history

keyring

Keyring manager — cross-platform state for the system-keyring surface (SUPER_PLAN_2 §4 P4.2).

permission

Permission manager — the cross-platform piece of the “permission-as-DOM” architecture (SUPER_PLAN_2.md §1.5 and scripts/research/08_permission_dom_nodes.md).

scroll_into_view

Scroll-into-view implementation

scroll_state

Pure scroll state management — the single source of truth for scroll offsets.

selection

Clipboard content types for copy/paste operations

sensors

Sensor manager — cross-platform state for the motion-sensor surface (SUPER_PLAN_2 §1 feature 5 + research/03).

text_edit

Unified text editing manager

text_input

Text Input Manager

undo_redo

Undo/Redo Manager for text editing operations

virtual_view

VirtualView lifecycle management for layout

Structs

NodeIdMap

The result of a DOM reconciliation, from the point of view of anyone holding NodeId-keyed state for a single DOM.

Traits

NodeIdRemap

Implemented by EVERY manager (or cache) that keys state by NodeId.