- The (RTL) text "Arabiy (Misr)" should be entirely RTL, so
make the parenthetical insert -- which would otherwise be LTR
and so mess up the placing of those parenthesis around the country --
explicitly RTL.
- Since there are no RTL languages in Calamares right now with
country-local translations, this isn't visible.
- A locale suggests it is country-specific by having the form <lang>_<country>
- This mostly fixes locale "ar" being presented as "Arabiy (Misr)" when
there is no need to (and the RTL is messed up then, too).
- Introduce intermediate data class for building up the list
of languages to present.
- Sort on the English names, with en_US at the top (ugh).
- Show the native names.
- Much like std::find_if, but slightly muddled because there's
no iterator that we can sensibly use.
- Scan the ComboBox for a locale that matches a predicate.
- Log more as the search for a good locale progresses.
- Don't mix matching the locale with filling the ComboBox
(even though that's slightly more efficient).
- Since these tests use network resources, they are not enabled by default.
Set the environment variable TEST_HTTP_GET to actually do them.
- Do one request for each provider and check that they are all consistent.
(This works for me, yielding Europe/Amsterdam for all).
- Some providers don't provide a single flat JSON object
(e.g. "{time_zone: foo}") but a nested structure
(e.g. "{location: {time_zone: foo}}"), so allow dots
in the selector to do multi-level selection.
- Some providers return weirdly escaped data; strip out useless
escaping before splitting (there are no characters in correct
time zone names that need escaping)
- Add some tests for TZ splitting
- In GeoIP handler constructors that take a string (to configure the
selector to use), interpret the empty string (which generally isn't
a meaningful selector) as meaning "use the default".
- Drop the no-argument constructors in favor of a default-argument
which is empty.
- GeoIP gets a string selector; the interpretation is up to derived classes.
- GeoIPXML and GeoIPJSON use the selector to select an element by tag
or an attribute, respectively.
- The handler for JSON data should be called that, not named
specially after the original provider it was implemented for.
- Make filename and classname consistent, GeoIPJSON.
- The screenshot stays one size, but different ThemeWidgets may overlap
partially when you shrink the screen or have more than three / four
themes listed.
- Probably needs work in the surrounding container and overall better
page-scrollbar support.
- Unchanged config files will continue to use the weird addition
of /json, and interpret JSON data.
- Allow to specify full URL with data format through one of
geoipStyle: json
geoipStyle: xml
- XML support is optional
- Don't insert a space before the output of a process
- To do this, suppress space and quoting on the output, and to do
that move the labeling-output for warnings and errors into
the constructor (so that an idiomatic .nospace() does the right thing).
- Settings is just a settings class, no UI involved, so
move to libcalamares where it can be used also from
system helpers.
- YAML utilities are useful at a lower level of the stack, too.
- Put the (constant) 'Calamares will now quit' on its own debug line.
- Tell the user what the search paths are if a module is not found
(prompted by a mis-configuration in a Neon live image).
- Make the BCP47 value explicitly lower-case.
- Add some constness and encapsulation.
- Fix up documentation in the packages module explaining the
format of the ${LOCALE} replacement (now forced to lower-case,
but it is also only the language part, not e.g. en-UK).
FIXES#922
- Count only the packages that will be changed, given the current
locale settings.
- Preserve global storage unchanged (don't remove any locale-packages).
- Use DebugRow for one-row-at-a-time output with continuations.
- Use DebugList for one-item-per-line with continuations.
- Use DebugMap for one-row-at-a-time output of a QVariantMap.
- This enables working in three modes:
- No themes listed; all are shown without screenshots,
- Themes listed, showAll false; only those are shown,
- Themes listed, showAll true; the installed-but-not-listed
themes are shown after the listed ones, and have limited info.
- Although it's not necessarily accurate for an extensively-modified
Plasma configuration, we can read the Look-and-Feel from the
configuration files. Allows auto-detection.
- For OEM modes where there is already a theme, add a preselect:
key to pick a specific theme and have that one come up as already-
selected in the list.
- Don't re-run the lnftool if an already-selected theme is clicked
again. Use toggled() instead of clicked().
- Don't bother with the address of the main thread
- Do put a marker on restart into the log file
- Do put the Calamares version into the log file (previously, the version
was printed through cDebug() before the log file was opened, so it was
lost to the on-disk log).
Documentation lives both in Calamares and in the calamares-branding
repo. Whether a slideshow has navigation arrows or not is up to the
slideshow / branding component author, but Calamares now ships some
support QML to make that easy.
FIXES#841FIXES#904
It is the distro's responsibility to produce screenshots that look
good; previously I chose to preserve the aspect ratio on the grounds
that this would keep the look of the screenshot even if the distro
had done one in a weird size. This makes the screenshot part
of the LNF selection look weird, though, since then you get
blank parts.
Switch to ignoring the aspect ration; distro's should produce
screenshots in a 12x8 (i.e. 3:2) aspect ratio, preferrably at
least 120x80 pixels -- but keep in mind hiDPI and the default
font sizes of the distro, which may make other sizes look better.
(this follows discussion with BlueStar Linux)
- Auto-advance the default presentation
- Add more example slides to the fancy presentation
- Expand README.md explaining what the default classes can do
Removed these features that make sense in a presentation slideshow
(e.g. during a talk) but that are potentially confusing during
a passive slideshow like Calamares has:
- Using 'c' blanks the slideshow.
- Entering a slide number + enter changes slides.
- Add a NavButton, which shows a directional arrow, and fades in on hover.
It can be used left- or right- by setting an image source
and click handler.
- Specialize NavButton to Forward and BackButton.
- Add a SlideCounter navigation aid.
the original code does not distinguish the document comments inside the locale.gen file from the real locale list. The language was then enabled from the header comments of the file instead of the correct value in the list.
The new code verify tha the complete locale string is just after the first character of the string, enablig only the correct value of the locale list.
An example:
# en_US.UTF-8 UTF-8 --> document header, should not be enabled
#en_US.UTF-8 UTF-8 --> correct section to enable
Related to this request:
https://code.chakralinux.org/tools/calamares-chakra/issues/2
The install-bits branch commit 83639b182b
dropped .so-versioning for libcalamares and the creation of the Python-
support symlink. This broke KDE Neon dev-unstable because the embedded
Python can no longer find libcalamares.
Installing unversioned .so's straight to LIBDIR is also not a good thing
(according to Debian), so revert to the original scheme with versioned
.so and a Python-support symlink.
Medium-term fix is to install unversioned straight into LIBDIR/calamares
and fix up the RPATH for the executable.
- Applies to libcalamares and libcalamaresui.so, install with no
version, just the bare .so. Since Calamares doesn't do versioning
anyway, and its plugins should be re-compiled for any change,
putting them in lib as unversioned .so's should make Calamares
happy and silence lintian.
- The Python testmodule script can end up calling in to System
methods (via System::instance()). This is unusual, and the
System instance has not been created at that point.
Now, create an instance and warn about it.
- ValueCheck shouldn't own the pointer, since it's just a QPair
and there are temporary copies made (e.g. in
ContextualProcessBinding::append() ) and we get double-deletes.
- Do deletion by hand; going full unique_ptr would be a bit overkill.
- Re-build the structures for doing value-checks, is now more tree-like.
- Document pointer ownership.
- Introduce wildcard matches ("*")
- Don't drop empty command-lists, since they can be used to avoid
wildcard matches. (E.g. "in this case, do nothing, but don't
fall through to wildcard").
- Since the image size isn't known a priori (due to sizing based on fonts),
load the image and then resize in all code paths.
- Use the right resizing flags.
- .. and actually use the resulting scaled pixmap.
Thanks to Jeff Hodd.
- If the next step will be an install-step (e.g. hit the optional
confirmation step) then change the text on the 'next' button to
'install'.
- Do a little refactoring to make that more pleasant.
FIXES#905
- Move logging-levels to an enum
- (re-)Order logging-levels so that the normal debug statement is
not the most-important (lowest level).
- Drop using namespace std;
These additional pointers were introduced for translations,
and needed their own tricks to get lupdate to recognize the
strings. Using QCoreApplication::translate() removes the
need to a QObject to provide context. Drop the now-unneeded
parameters.
Instead of using tr and some macro hacks to get lupdate to
recognize the translation, instead use QCoreApplication::translate()
which takes its own context for translation.
- For both shellprocess and contextualprocess, add a top-level key
"timeout" that defaults to 10 seconds (which it already did).
- Allows setting "global" timeout for command-lists, while still
allowing individual timeouts per-command.
- Setting timeout per global variable in contextualprocess is not
supported; that would restrict the possible space of comparisions,
while not supporting a global setting timeout seems reasonable enough.
Use instances if you need wildly variable timeouts and don't want to
set them individually.
- Replace plain StringList with a list of <String, timeout> pairs,
and run that instead. All code paths still use the default 10sec
timeout and there's no way to change that.
- Copy stdout from timed-out process into the output variable,
instead of just dumping it into the log file. This will
improve the user experience, too, because they will get some
feedback / explanation of what the process has done.
- add license file from libpwquality for provenance
- translate pwquality_strerror() into the PWSettingsHolder convenience class
- use Qt translations, since we'd otherwise also have to wire up, and
wire in, libpwquality gettext translations.
- Use shared_ptr and a helper class to hide away raw pointer use
from libpwquality. Provide a convenience C++ API.
- Simplify configuration through helper class.
Use the samegame example from the Qt Quick demos as a branding "slideshow".
Instead of watching slides go by, you can play samegame! Click on
"new game" to start, and then click on groups of same-colored balls to make
them go away -- at least two same-colored balls must be touching.
Once the exec step is done, the game vanishes automatically.
This is an additional example for #841
- Remove some superfluous intermediate defines
- baseFactory was not used (always Calamares::PluginFactory)
- Move DECLARATION and DEFINITIONS apart
- CALAMARES_PLUGIN_FACTORY_DEFINITION was redefined (identically)
- CALAMARES_PLUGIN_FACTORY_DECLARATION was redefined (identically)
- __VA_ARGS__ was constant
- Issue asks to make the setting more visible, which seems sensible to
me. It **is** kind of hidden away for those distro's that make
the setting visible (not everyone does).
- While here, add a tooltip explaining what it does.
FIXES#893
Allow running one or more commands based on the value of
a global configuration variable. This could, of course,
be done in a Python module with some custom code,
but for simple cases this is more straightforward
to configure through module instances.
Uses the CommandList developed for the ShellProcess
module to do the actual work.
FIXES#874
- Move CommandList so it can be used from more modules than
just ShellProcess
- Allow a CommandList to run itself. This centralizes
code for executing one or more commands and simplifies
the ShellProcess module.
Various small cleanups:
- mention instance id in log message
- code formatting / style
- This turns off the space-available check in the welcome module;
without libparted, always fail that check.
- Allows running the welcome module on OS without libparted.
- Also allow a single string instead of a list
- Add count() method to CommandList
- Drop over-engineering, add more logging
- Expand tests with some more examples
This is basically dummyprocess, except with an expanded configuration
interface so you can run 1 or more shell commands in the live
or target system with a suitable configuration file and instance
of shellprocess in settings.conf.
It can replace downstream modules that implement their own
process modules with a command, by an instance of shellprocess.
Back targetEnvCommand() with a more general runCommand()
that takes an argument selecting the location to run
the command in. This allows us also to use the same
API for running processes in the host during install,
as we do for running them in the target system.
One reason for this change is wanting to run (user-specified)
commands and independently from the global dontChroot setting,
run those commands in the live system or the target.
This changes the ABI of the DLL, since targetEnvCommand()
is no longer exported. Plugins will need to be recompiled.
- refactor targetEnvCommand() into more general runCommand().
- While here, allow host system commands to run even if
there is no global storage.
- provide convenience accessors for ProcessResult members
- Move explanation of process errors out of ProcessJob
- Move from ProcessJob to ProcessResult, so it can be
reused outside of ProcessJob (e.g. from ShellProcessJob).
- Add some convenience functions, too.
Make a function out of explaining-skipped-modules, and call it
not only after collecting all the modules, but also after
the feature summary, so that it's quite clear which modules
are skipped.
Scenario is this: you have no suitable installation devices on
your system (everything is mounted, or HDD has died), click through
to partition page, where you have all the buttons available, but no
devices in the list. The following actions then cause a crash:
- clicking "back"
- clicking any button
Prevent that:
- you can click "back", but if there is no device selected
nothing happens to the device state (no nullptr deref,
and no crash)
- button code is now more resilient to this scenario
- buttons are hidden until a device is available, so you
can't even click on them to trigger the code.
- remove hide-close-button hack
- refactor code in viewmanager for confirming quit
- hook up confirm-and-quit to WM close button
- also works for alt-F4 and other quit methods
- while here, update copyright year
FIXES#870
Modules may be skipped for different reasons: SKIP_MODULES
is the traditional approach to suppress some, but other modules
may have unmet build requirements (e.g. Plasma Look-and-Feel,
or the Partitioning module) and should be able to opt-out
of being built. For all those skipped, log it explicitly after
all the modules have been examined.
Only CMake-based (e.g. C++) modules support opting-out in this way.
This is meant to run one or more jobs based on specific global
configuration values; if could also be done by a Python
module with just some if's, but this one can be used with
just the config file and covers a bunch of use-cases.
- calculate a hash of the filename, and use that
- makes it possible to distinguish different screenshots
even when the image file is missing / badly configured
- most colors will be dreadful
Patch by Gabriel C. (@abucodonosor).
- use libcalamares functions
- no need to copy /etc/adjtime over we can run hwclock in chroot
since we have /proc , /sys , /dev , /run/* already bind mounted.
- added RTC and ISA probing methode ( see issue #873)
- we probe default from /dev/rtc* ,
- fall back to ISA
- still doesn't work we just print a BIOS/Kernel BUG message and continue
- NOTE: issue #873 is about broken ArchLinux kernel config but there
are HP boxes with real RTC problems no matter what kernel config
is used so let us be nice and don't error out..
FIXES#873
- Implement various ways of getting the LNF; the process-based one
uses a recent CLI-tool from the Plasma developers.
- Fill the UI with (meaningless) LNF package IDs.
- Move widget behavior into its own container / widget class
- Change the RequirementsChecker class to just check the
requirements, returning a results list
- Connect from the module manager to the results widget.
- Move type and rename it; put in Calamares namespace
- Emit signals from the viewmanager as results come in
- Remove state changing from welcome view step based on its internal
requirements checking (for now this breaks progressing past the
welcome page)
- Log checking of the requirements
Introduce a method checkRequirements() into the module system so that
individual modules can do their own checking (as opposed to stuffing
it all into the welcome module).
Do a better job determining what the arguments could mean; this supports
lazy devlopers who don't want to pass in full paths to all kinds of things.
Simple invocation can now be:
testmodule.py <modulename> - +
to read <modulename>.conf from src/modules/<modulename>/
This, kids, is why you don't switch writing C++ and Python too often.
The C++ code isn't a syntax error in Python, although this would fail
at runtime.
Update documentation, add a new key *skip_if_no_internet* to support
systems that **recommend** having an internet connection (but don't
require it), and which also use the packages module. This prevents
a long delay while the package manager tries to access the internet
and times out (repeatedly).
Existing configurations are unchanged.
Use dict methods, in particular d.get(k, v), to retrieve
the pretty_name() function (or None if it isn't there).
Using getattr() on a dict will not return values in the
dict.
For called processes, replace the not-very-useful type message
with the command-explanation, and replace the value (previously
command-explanation) by the stderr of the failed command.
FIXES#865
This is why the whole refactoring started: to get the process output
and exit code in one spot so we can attach the process output
to the (Python exception) CalledProcessError in all the code
paths, not just those that are explicitly looking for output.
- Add a more general targetEnvCommand() that returns both
error code and process output.
- Change existing targetEnvCall() and targetEnvOutput()
to use general form while discarding some data.
- Refactor, internal _handle_check_target_env_call_error doesn't need
to be in header or visible.
- Add optional output (of the command) to the Python exception.
Root is always selected, can't be unselected, and has its own explicit
constructor and name. This resolves issue reported where unchecking
all *visible* groups caused the root to be unchecked, after which
hidden-but-still-selected subgroups were not installed.
Reported by crazy@
Adds a "tracking" module which allows configuring phone-home,
machine and user tracking. Additional machine-tracking types
could be defined depending on distro needs.
This is not the final version -- there is still polishing to
do on the icons, perhaps layout.
Tested in KDE Neon devunstable by keeping an existing partition
which had an older Neon running. New machine-id is generated
and sed'ded into place.
FIXES#783
Following KDE Pholio M116, switch to using a radio button; instead
of 4 individually toggle-able settings, use a "level" indicator
to select none, install, machine, user .. each of which implies
the previous levels. Each level is individually enable-able from
the distro side.
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
Relying on auto-qobject deletion on shutdown generates a warning message
17:23:44 [0]: QBasicTimer::start: QBasicTimer can only be used
with threads started with QThread
which is annoying. Since we're in shutdown, just skip deletion
entirely, and leave the model unparented.
FIXES#472
Each kind of tracking has an associated webpage / URL describing
the policy for that tracking. The Calamares User Guide has some
generic information. When the user clicks on the Help (?) button
in a tracking-option block, go to that URL.
- Enable translations, substitute ShortProductName into string,
- Simplify code for enabling tracking option blocks,
- Set checkboxes based on configuration,
- Read checkboxes when leaving page,
- Don't stretch the tracking option blocks.
- add icons for graphical display of actions
- extend description of tracking options
- add debug logging
- enable next button
- show/hide tracking options based on configuration
- 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).
- Warn here since it may not be what the Distributor want.
Having wrong groups may result in broken permissions for
created user.
- explain what defaultGroups is for in users.conf
Welcome is only interested in checking partitions, not
in resizing them, so stick to one library. This will
become moot when the checks move to partitionmanager
and KPMCore can do the things.
- 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).
- this applies to new partitions; existing documentation erroneously
said this happens with Replace as well,
- follow up on Andrius manual-partition PR with documentation that
manual mode doesn't switch to this FS when editing existing partitions.
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.
- it doesn't make any sense to have restartNowCommand and fallback
set to the same command.
- also fallback should be something generic every init supports
- Was marked incomplete and unused; none of the existing modules
set any requirements, and the descriptors are not set up to
hold the requirements information anyway.
- Dependencies are generally through globalStorage values, or if
there are dependent jobs they should be created in-order by one
source (e.g. though a View or a subclass of CppJob which overrides
jobs() ).
- It is the responsibility of deployers to formulate a settings.conf
that includes all the required modules.
- A 'real' dependency system is going to lead to the introduction
of interface-definitions and a great deal of complexity, for a
use case that can be handled with careful deployment instead.
- This is only a partial solution to warnings caused by third-party
code, since #including the headers from other sources won't apply
the warning-suppressions.
- Flags are not applied when building the source as part of a larger
target, but are on re-building just one object (it seems -- CMake
issue to track down).
Thanks to Kevin Kofler for pointing out what I'd forgotten about
source-file flags. While at it, introduce a generic mechanism for
suppressing warnings in third-party code.
Mostly reverts 4930484931
- include full license headers,
- copied from
- repo: https://github.com/snowwlex/QtWaitingSpinner
- rev: bb8f8987ca19406dc75704eb382ab52e981b773f
This revision *does not build* because the files have been renamed.
- Introduce a map 'passwordRequirements' in users.conf,
which is a list of named requirements. There are only
two settings right now, min and max length, but
additional checks can easily be added in UsersPage.cpp
by defining additional lambda's to check the given
password string.
- Add PasswordCheck instances as needed, with functions
to check acceptability and to produce messages on rejection.
- Documentation in the users.conf file itself.
- In passing, refactor setting of pixmaps on labels.
FIXES#790
Resolves issue where 'linuxswap' is translated to 'Linux-Swap',
for instance. FileSystem::name() provides a translated name,
not an untranslated one.
This should move to KPMCore.
FIXES#797
There is no need to force folks haing a random group
bc that is a Distro think. SDDM/GDM works just fine without
having a group for the user to autologin.
Just setup a group in users.conf .. is why we have a configuration
option for that.
- deleteLater() doesn't like nullptr (produces a warning, but is harmless)
- reparenting across threads doesn't work, comment on that but leave
it in, since this may be relevant for memory management.
- both NetInstall (group data) and Locale (GeoIP) use network
data returned as a source of YAML data. Try to explain
parsing errors for both.
FIXES#786
When NetInstall receives YAML data, handle parser errors more gracefully:
show line and column, but because it's network data (not in a local file),
do some work to print out the actual data received.
FIXES#786
If the summary widget is large, it gets a scrollbar. This looks really
weird, so prefer to grow the installer window instead. Discussed with
@sitter and settled on this solution.
ViewSteps can signal the ViewManager that they need more space (in pixels),
which may or may not be honored.
FIXES#778
This was WIP, working on the fstab / UUID problem, but stands on its
own; since others are zooming in on the fstab / UUID problem, close
down the branch.
This is experimental, off-by-default, code for developing a telemetry /
tracking configuration module. It is preliminary work for issue #628,
but also for KDE Neon configuration. Any telemetry should conform to
the KDE Telemetry Policy [1] or similar Free Software telemetry policy
(e.g. the Mozilla one).
[1] https://community.kde.org/Policies/Telemetry_Policy
Initial idea is to distinguish three kinds of tracking:
- installs. This tracks that OS <foo> has been installed somewhere.
It might send some machine information to a remote server.
- machines. This enables some kind of machine tracking in the
installed system, for instance it could enable popcon on
Debian, or periodic phone-home-pings.
- users. This enables some kind of telemetry / tracking on the
installed user in the system.
A simple and transparent setting is to enable install-tracking and set
it to opt-in, and disable machine and user tracking. Explain to the
user that <foo> would like to know when <foo> is installed, and that
the following information <d1>, <d2> will be sent to <url> in accordance
to the <foo> telemetry policy at <url2>.
Work in this branch is subject to VDG review for the visuals, and
privacy oversight by whatever group is responsible for <foo> privacy.
Note that this module makes it *possible* for telemetry configuration
to be visible inside the installer; what distro's do with telemetry
already is entirely outside the scope of this configuration module.
- Check for 'list' when it's actually a 'dict' is strange.
Reverse logic to consider 'str' a package name and everything
else is special.
- Refactor to handle the difference between package names and
packages-with-script-data in one place.
- Add code and config documentation.
- Switch sample configurations to dummy-backend.
When testing Python modules, passing option --lang should also
set the global 'locale' (to a BCP47 string, but hey) like it
already sets localeConf.LANG.
- For Boot and Device info widgets, add a retranslateUi() method,
since the labels change not only in response to translation
events but also UI events.
FIXES#779
- remove Job.gettextPath
- add libcalamares.utils.gettext_path()
- add libcalamares.utils.gettext_lang()
- modify examples in main.py
- add some gettext debug-output from dummypython
- correct namespace mis-labeling
- provide two forms of GlobalStorage
- regular use, has a JobQueue with storage
- testing use, creates GlobalStorage separately, provide
independent access to that for Python.
- Didn't run at all (at least since v3.1) because of mismatch between
GlobalStorage constructor arguments and use; special-case None
in the C++ code to allocate a new GlobalStorage object.
Add description of language and number formats to pretty status.
This is shown in the summary page. Refactor a little to produce
the strings only in one place. Constify methods.
FIXES: #564
This is preparatory work for making the available-space check consistent with
what the partition module will allow for installation. Right now, the check
for available space will allow a mounted drive, even /, to satisfy the check.
