This way only certificates matching the entered text are shown initially
when the user opens the certificate list from the recipient key input
field.

GnuPG-bug-id: 5845

Add a proper button for opening the certificate selection dialog, so
that people using the keyboard can trigger this action and people
using screen readers have a chance to become aware of this action.

GnuPG-bug-id: 5845

This ensures that screen readers do not stay silent when an empty
recipient key input field gets keyboard focus.

GnuPG-bug-id: 5845

GnuPG-bug-id: 5845

We have to include KeyGroup here because the code generated by moc needs
its complete type.

This has the effect that, when the user hits Enter after entering some
text matching exactly one key or group, then the text in the line edit
is "auto-completed" with the key/group summary text. Apart from the
visual feedback this should also trigger audible feedback by screen
readers. (ocra does read the auto-completed summary text.)

GnuPG-bug-id: 5845

The mEditFinished flag needs to be reset before updateKey() is called,
so that line action and tooltip are updated correctly.

GnuPG-bug-id: 5845

This works around a bug in Qt which causes screen readers to read wrong
model items. See commit 6de644bf in libkleo for a similar fix for the
key selection combo.

GnuPG-bug-id: 5845

Breeze style (and some other styles) does not show a visual indication
that a button has keyboard focus in a newly opened window. Explicitly
set the WA_KeyboardFocusChange attribute to force visual focus of the
button that has focus when the wizard is shown without protocol.

GnuPG-bug-id: 5832

(cherry picked from commit bf18445f)

Listing the available readers, so that they can be copied to a GnuPG
configuration file, isn't needed anymore, because the reader can now
be selected via the Smart Cards configuration.

GnuPG-bug-id: 5857

If no certification key is selected (can only happen if users try to
revoke certifications on their only secret key) or no user IDs are
selected, then disable the OK button.

GnuPG-bug-id: 5858

Do not start a job for revoking signatures if no certification key
or no user IDs were selected. And prevent a nullptr-dereference if
the job creation failed for some reason.

GnuPG-bug-id: 5858

For now this module only offers the configuration of the reader port.

GnuPG-bug-id: 5857

Set accessible names of the filename requesters and make the tool tips
more verbose.

GnuPG-bug-id: 5845

To achieve this, call the super class's moveCursor() with an invalid
cursor action to make it call the private executePostedLayout()
function. This is obviously a hack, but it feels less problematic than
depending on the private headers of QTreeView.

GnuPG-bug-id: 5841

This overrides the default handling of left/right cursor movement of
QTreeView. The left/right keys always move the cursor to the previous/next
column (or move the horizontal scroll bar). QTreeView's expanding and
collapsing of items with children is not done. The user has to use Plus,
Minus, or Asterisk for expanding or collapsing items.

Navigation column by column is important for people using screen
readers because this way they can get the values of the individual
entries of the table. Visually it may not be possible to see which entry
is the current entry because we always select complete rows, but that
shouldn't be a problem because it doesn't matter which entry of a row is
the current entry since there is no interaction possible with individual
table entries. Any interaction always applies to the selected rows.

GnuPG-bug-id: 5841

GnuPG-bug-id: 5841

This ensures the correct focus order of the "New Tab" button and the
tab bar of the tab widget.

GnuPG-bug-id: 5841

This allows creating another widget before the tab widget.

GnuPG-bug-id: 5841

Hiding the tab bar breaks input focus navigation with Tab: If the widget
before the tab widget has focus and the tab bar is hidden, then nothing
happens when one presses Tab. Most likely a bug in QTabWidget which
sets the tab bar as focus proxy.

Moreover, not hiding the tab bar makes it more obvious that one can
create additional tabs.

GnuPG-bug-id: 5841

Add accessible names and tooltips to the "Filter certificates" input field
and the "Filter certificates by category" drop-down.

Note: For some reason, on Unix Qt uses the drop-down value instead of
the accessible name as accessible name, but on Windows the accessible
name of the drop-down is used.

GnuPG-bug-id: 5841

Add an accessible name to the icon-only button.

GnuPG-bug-id: 5841

Use "type" for title and subtitle (instead of "format" in title and "type"
in subtitle). Specify the type of what shall be chosen, i.e. "the type of
key pair". This should make the text better to understand in particular
for people using a screen reader.

GnuPG-bug-id: 5832

Qt has no special accessibility support for QCommandLinkButton. Therefore
we have to make the description explicitly available for accessibility.

GnuPG-bug-id: 5832

GnuPG-bug-id: 5832

During the update of the form the lineList is temporarily cleared.
If the input fields are preset from saved values, then the update of the
result label is triggered, but because of the empty lineList it is updated
to an empty DN value (for protocol CMS).

GnuPG-bug-id: 5832

Use the helper to ensure that the protocol is kept on restart.

GnuPG-bug-id: 5832

It's unlikely that the user wants to create a key pair for the other
protocol, if creation failed. So, start over at the Enter Details page.
Remember the current protocol before restarting the wizard because
restarting the wizard resets the protocol to the initial protocol (which
may be unset).

GnuPG-bug-id: 5832

Setting the visibility of the Cancel button to false in case there was
no error does not work (anymore). Most likely the wizard updates the
button states after calling initializePage() on the page.

Setting (or unsetting in case of an error) the NoCancelButtonOnLastPage
option makes it work as intended.

GnuPG-bug-id: 5832

I think it's confusing to show the Back button on the start page. It is
anyway disabled, so why show it?

GnuPG-bug-id: 5832

This removes the hint about the Advanced Settings button from the page's
subtitle if the Advanced Settings button is hidden.

GnuPG-bug-id: 5832

Resetting the protocol unchecks the button of the current protocol. This
allows the user to switch between the protocols without immediately going
to the "Enter Details" page again.

GnuPG-bug-id: 5832