In "History" screen, Left, Right, and Space keys don't work

[Matthew Paul Thomas]

Ubuntu Software Centre 4.1.15, Ubuntu Ocelot
software-center-gtk3 trunk r2119, Ubuntu Ocelot

1. Navigate to the History screen.
2. With the keyboard, select a date branch that is not currently expanded.
3. Press Right.
4. Press Left.
5. Press Space.
6. Press Space again.

What happens: (3, 4, 5, 6) Nothing.

What should happen:
3. The branch expands.
4. The branch collapses.
5. The branch expands.
6. The branch collapses.

<https://wiki.ubuntu.com/SoftwareCenter#history>: "Clicking anywhere on a branch — or pressing Space when it is selected — should expand it if it is collapsed, and collapse it if it is expanded. When a branch is selected, pressing Right should also expand it, and Left collapse it."

[Michael Vogt (mvo)]

Thanks for your bugreport.

This is the same keybinding behavior as any GtkTreeView. I would suggest that this gets fixed on a global level to have a consistent experience across all apps.

[Matthew Paul Thomas (mpt)]

What is the same keybinding behavior? How do you expand/collapse a GtkTreeView branch with the keyboard?

The keyboard navigation I specified is consistent with Nautilus. (Except that in Nautilus, Space opens the folder. In USC expanding the branch is the closest equivalent to that.)