If a subgroup is hidden, then it should be considered
selected if its parent is selected or partially-selected.
If the parent group is totally unselected, then the hidden
subgroup shouldn't be installed either. This allows putting
required-packages into a group, without cluttering the
interface.
FIXES#864
While walking up the tree, only switch the selectedness states
of parents with children. This avoids the case where a parent
has a first subgroup that is hidden -- in which case the
parent ends up with no children, and is unselected even though
it is marked as selected in the config file.
FIXES#864
- m_groups is only set to a non-nullptr value when data is received
and fully processed,
- avoid nullptr dereference when paging *back* from a netinstall
page that hasn't loaded groups data.
FIXES#859
- Document netinstall.conf a little,
- Add setting *required* which influences whether next is enabled or not
in case of missing or corrupt data,
- Enable *next* button only once some (any!) data is received.
This can be used to disallow stepping past the netinstall step when
there is no data (e.g. internet has failed between the welcome page
and the netinstall page).
- If there's no scripts involved in a package for netinstall, just
name it without the scripts; this lets the packages module
optimize to fewer package manager calls.
- Each element of the (list) packageOperations needs to be a
package operation, which is a dictionary with keys (identifying actions)
and lists of packages (which may be strings or script-info dictionaries).
In the timezone widget, locations in the far north -- Inuvik,
Thule, Longyearbyen -- were displayed too far south, because the
map location calculation assumes a linear gradient, which places
90 degrees north at about 70 degrees. Change calculation to
pretend the world is flat south of 62 degrees north, and then
'bend' the remaining 28 degrees of latitude to the top of the
image. This puts most places in the right spot, although Yellowknife
is now on the south shore of Great Slave.
Fort Nelson should be north of Dawson Creek, too -- the math still
needs a little work.
While here, put Antarctica in the south, otherwise Rothera keeps
showing up in Greenland.
