1038730 - Variable previewers collapse object inspector expansions

Status: RESOLVED INVALID

(DevTools :: Debugger, defect)

Description

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

STR:

1. Go to http://htmlpad.org/debugger/ and open Debugger
2. Click "Click me!"
3. Expand "this" in the Variables tab to see its properties
4. Hover on some variable in the script to get the preview tooltip, like document on line 14

ER:

The preview appears, and you can still see the properties of "this" in the variables.

AR:

The preview appears, but "this" in the variables collapses for some reason.

Comment 1

[Victor Porof [:vporof][:vp]]

It collapses because of: http://dxr.mozilla.org/mozilla-central/source/browser/devtools/shared/widgets/VariablesView.jsm?from=variablesview.jsm&case=true#3076

Same happens for watch expressions, or generally anything that causes an evaluation: https://bugzilla.mozilla.org/show_bug.cgi?id=963215#c3

Comment 2

[Eddy Bruel [:ejpbruel]]

Question is: is this desired behavior? (WONTFIX) or do we want to do things differently here? Victor, what do you think?

Comment 3

[Victor Porof [:vporof][:vp]]

The behavior is undesired, but automatically expanding huge objects makes stepping slow, hence comment 1. A compromise should be found, where all objects are automatically re-expanded when evaluating stuff for the purpose of displaying variable bubbles.

Comment 5

[David Walsh :davidwalsh]

I'm going to close this; the STR are no longer applicable and we no longer have a "variables" view.