Tree view needs a "collapse all" action

[aghassemi]

After I have expanded bunch of nodes at different levels for some purpose. I found it annoying to have all those nodes expanded when I am moving on to another completely unrelated task that involves the tree view. Having a quick way to collapse all nodes ( in a way, reset the view) would be great.

(I think action should be a paper-fab like the zoom in visualize view)
(super simple to implement, we just nuke the expanded map)

[wmleler]

This already works in Radial view. Use the "collapse node" action in the context menu, or just hit the space bar, which will collapse the selected node.

Not needed in Grid view.

The "reload" icon in the header does exactly this.

Could add the expand one level action to the Tree view. That would allow the view to be reset by collapsing the view root and then expanding one level. Could do this with a paper-fab, by holding down the shift key while clicking on the expand/collapse arrow, or with a keyboard shortcut (Return) -- preferably all three to keep things consistent with the Radial view.