[Webkit-unassigned] [Bug 190009] New: Need a way for JavaScript (or bundle) code to participate in undo

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190009

            Bug ID: 190009
           Summary: Need a way for JavaScript (or bundle) code to
                    participate in undo
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: NeedsRadar
          Severity: Normal
          Priority: P2
         Component: HTML Editing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mitz at webkit.org
                CC: rniwa at webkit.org, thorton at apple.com,
                    wenson_hsieh at apple.com

There needs to be a way for code in the Web Content process—presumably JavaScript code on the page, but possibly bundle code—to participate in undo.

Here is a concrete use case that should be supported: if an (undoable) editing operation triggers an event handler (such as an input event handler or DOM mutation event handler), then in the context of handling the event, there should be a way to register a handler to be run when the editing operation gets undone. There should probably also be a way to determine whether the event handler is running because of an undo/redo invocation.

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