The existing API required calling the one constructor with
specific pointers (nullptr for a partition-from-free-space)
followed by calling one of the initFrom*() functions. This
is fragile design.
Use tag-classes to distinguish create-from-free-space and
edit-another-freshly-created-partition cases, refactor
to merge the initFrom*() methods into the constructors
and factor out the shared UI creation.
Callers can now use the tag-class to distinguish. While
here, adjust both callers to use QPointer, avoiding some
very specific dialog-on-the-stack crash possibilities.
- point to main Calamares site in the 'part of' headers instead
of to github (this is the "this file is part of Calamares"
opening line for most files).
- remove boilerplate from all source files, CMake modules and completions,
this is the 3-paragraph summary of the GPL-3.0-or-later, which has
a meaning entirely covered by the SPDX tag.
- If there is a partition already (newly) created, then pass that
to the dialog so that it can use the setings previously applied
(e.g. mount point and flags).
- This avoids the case where you create or format a partition,
then click on it again to edit it and the previous settings are lost.
- Setup the lsit of flags consistently, by providing the available
and to-be-checked flags.
- In CreatePartitionDialog, assume that ~0 is all the flags.
We get the mountpoints already used by other partitions, and
disable the Ok button in the "Create new partition" dialog if
the user selects/writes a mountpoint which is already used.
We are going to do the same in the Edit partition dialog
after testing.
