[SteVen Batten (sbatten)]

This PR refs #85164

• Updates the tree view to enable updating of the styling
• Add events to ViewDescriptorService that allow listening for Container and Location change
• Add methods to ViewDescriptorService to get the view location. This works even before the container is registered and will trigger an event if the cached data turns out to be stale.
• Outline follows similar logic so included as well

[Sandeep Somavarapu (sandy081)]

Reviewed changes in ViewDescriptorService. Requested one change.
Approving it expecting that requested change is taken care of.

Thanks.

[Sandeep Somavarapu (sandy081)]

I think we shall also check location change here even though currently location change is not yet supported in registry. This should be ready for future if it is allowed.

I would recommend to have a single method that can be reused when views are moved in registry or in cache.

this.removeViews(from, views);
 this.addViews(to, views);

  const oldLocation = this.viewContainersRegistry.getViewContainerLocation(from)!;
 const newLocation = this.viewContainersRegistry.getViewContainerLocation(to)!;

  if (oldLocation !== newLocation) {
 	this._onDidChangeLocation.fire({ views, from: oldLocation, to: newLocation });
 }

 this._onDidChangeContainer.fire({ views, from, to });

[SteVen Batten (sbatten)]

Sandeep Somavarapu (@sandy081) thanks, will take care of this.

[SteVen Batten (sbatten)]

It would still be great to get approval from:
João Moreno (@joaomoreno) on TreeView styling changes
Alex Ross (@alexr00) for general CustomView updates

[João Moreno (joaomoreno)]

Changes in listService make sense!

[Alex Ross (alexr00)]

The custom view changes look good!

[Sandeep Somavarapu (sandy081)]

SteVen Batten (@sbatten) Merging the PR as we have all approvals.
I will also take care of doing the change I suggested after merging.