[Webkit-unassigned] [Bug 158399] New: Web Inspector: should be able to undo closing an inspector tab

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158399

            Bug ID: 158399
           Summary: Web Inspector: should be able to undo closing an
                    inspector tab
    Classification: Unclassified
           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: bburg at apple.com
                CC: bburg at apple.com, graouts at webkit.org,
                    joepeck at webkit.org, mattbaker at apple.com,
                    nvasilyev at apple.com, timothy at apple.com,
                    webkit-bug-importer at group.apple.com

Unfortunately there is no facility for undo/redo of model/UI changes in the frontend currently. The undo-redo shortcuts go directly to DOMAgent.{undo,redo} which only lets you perform and undo things that are subclasses of InspectorHistory::Action. This is generally just DOM and stylesheet changes.

We either need to add stub InspectorHistory::Action that delegate to the frontend to perform/undo, or the frontend needs its own undo stack, where some of the actions call out to the backend to perform their work. I think the latter is preferable, since the backend would not be able to merge duplicate stub actions created by the frontend. Having a separate action system in the frontend would be useful for other reasons, like getting a trace of user actions.

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