Views: initial opening a view animates all views within

[bpasero]

Steps to Reproduce:

1. pick a slow os (windows)
2. reload window with explorer visible
3. click on extensions view

=> the views within seem to animate from top to bottom
=> I think for the initial display we should not animate the views layouting

[joaomoreno]

This is a problem with the extension viewlet, and possible the views viewlet because it adds views a bit later.

@bpasero Are you sure it's animated? Isn't it just a view coming in a bit later?

[sandy081]

Extensions viewlet register Installed and Recommended sections and they are added at the same time to the PanelViewlet.

@joaomoreno May be each add to the viewlet is causing the animation?

[joaomoreno]

Animation is set only when panels fire onDidChange, not when added/removed. So it might be this: https://github.com/Microsoft/vscode/blob/master/src/vs/workbench/browser/parts/views/viewsViewlet.ts#L438

[bpasero]

Yeah I am for sure seeing an animation, maybe the video did not cover it nicely.

[bpasero]

@joaomoreno @sandy081 I am seeing a similar animation when typing into the extensions viewlet, waiting for the results to appear and then clearing the search. 2 views are animating in after that.

[sandy081]

Will talk to @joaomoreno directly to get more knowledge on this :)