[Webkit-unassigned] [Bug 160189] New: [GTK][WK2] Feature request: would like to receive notification on document height change

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=160189

            Bug ID: 160189
           Summary: [GTK][WK2] Feature request: would like to receive
                    notification on document height change
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aidanholm+webkit at gmail.com
                CC: bugs-noreply at webkitgtk.org

I'm currently porting Luakit to the WebKit 2 API, and one thing giving me an inordinate amount of trouble is implementing a robust port of the scroll position indicator.

Currently I'm monitoring DOMSubtreeModified events on a web extension and updating a UI-process cache of the document height over IPC, in an effort to keep the same synchronous API that Luakit provides to Lua scripts. This approach has a considerable performance cost and is also rather unreliable.

I'd like the ability to monitor changes to document height; something like a "notify::scroll-height" signal on a WebKitDOMElement, as this was what I tried first.

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