Capturing DOM Modifications Mediated by Decoupled Change Mechanism

Abstract

A DOM-based document editing system is disclosed that maintains an editor DOM that can be modified by a user and includes an edit capture extension. The edit capture extension encodes a change to the editor DOM in a hierarchical coordinate format to identify a location of the change. Encoded changes can then be transferred to a collaborator and/or a persistence engine. The DOM-based document editing system optionally maintains a store DOM in addition to the editor DOM. The edit capture extension identifies changes in the editor DOM by comparing differences between the editor DOM and the store DOM. Identified changes are reflected in the store DOM to ensure that the two DOMs are substantially synchronized. Related changes can be grouped in a group step. The related changes are from either non-contiguous regions of the document or a plurality of editor DOMs. Related changes can be undone and/or redone as a group.

Dependencies are inferred from the claim text.