[Webkit-unassigned] [Bug 144650] Web Inspector: REGRESSION(Tabs): Issues reloading a resource with breakpoints

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=144650

--- Comment #5 from Joseph Pecoraro <joepeck at webkit.org> ---
> 5. Order of operations on WebInspector.Frame.Event.MainResourceDidChange is
> problematic
>   - Main.js performs state restoration on MainResourceDidChange
>   - NavigationSidebarPanels (Resources, Debugger, etc) perform clean up
> MainResourceDidChange
>   - Typically, Main.js will do its work first, which may be very problematic
> in restoration!

The reason this is problematic was because of this scenario:

  (1) DebuggerSidebarPanel wants to remove its ResourceTreeElements for the old Frame and add ResourceTreeElements for the new Frame
  (2) State restoration wants to find a ResourceTreeElement basically just via URL

On reload, in cases where (2) happens before (1), then the ResourceTreeElement found during restoration was the OLD ResourceTreeElement, that immediately gets removed.

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