Objective

Implement a "Record Versioning" mechanism to allow Neo.grid.column.Component to short-circuit redundant updates during rendering, optimizing horizontal scrolling and grid updates.

Motivation

In Neo.grid.Row pooling, component instances are reused. When a row recycles (or during horizontal scroll when a column re-appears), cellRenderer is called, which triggers component.set(config). Even if the record hasn't changed, this often triggers VDOM updates because config objects (like arrays for sparklines) are new references.

Implementation Plan

1. Neo.data.RecordFactory:

   • Add a _version (integer) property to the generated Record class.
   • Increment _version inside setRecordFields whenever a field actually changes.
   • Expose a version getter.

2. Neo.grid.column.Component:

   • In cellRenderer, check if an existing component instance is being reused.
   • Short-Circuit Condition: If component[recordProperty] === record AND record.version === component.lastRecordVersion.
   • If condition met: Return early (skip component.set()).
   • Else: Proceed with update and store component.lastRecordVersion = record.version.

Expected Impact

Significant reduction in scripting time during horizontal scrolling and redundant store updates, especially for grids with complex component columns.