[Webkit-unassigned] [Bug 188960] New: Web Inspector: when scrolling a virtualized TreeOutline, only update the DOM periodically

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188960

            Bug ID: 188960
           Summary: Web Inspector: when scrolling a virtualized
                    TreeOutline, only update the DOM periodically
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: drousso at apple.com
                CC: inspector-bugzilla-changes at group.apple.com

Currently, we add/remove all TreeElement from the DOM every time the TreeOutline is scrolled.  This is wasteful, especially if the user is just scrolling a few pixels and the TreeOutline has a lot of children.  We should be smarter about when we want to recalculate the needed DOM elements when scrolling.

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