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Allow the "--retimeout" option to be used to specify a timeout value
that will be (re)applied after each keypress activity. This allows
script authors to ensure that a single (potentially accidental)
keypress will not pause the boot process indefinitely.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Generalise the ability to look up a dynamic user interface item by
index or by shortcut key, to allow for reuse of this code for
interactive forms.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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We currently have an abstract model of a dynamic menu as a list of
items, each of which has a name, a description, and assorted metadata
such as a shortcut key. The "menu" and "item" commands construct
representations in this abstract model, and the "choose" command then
presents the items as a single-choice menu, with the selected item's
name used as the output value.
This same abstraction may be used to model a dynamic form as a list of
editable items, each of which has a corresponding setting name, an
optional description label, and assorted metadata such as a shortcut
key. By defining a "form" command as an alias for the "menu" command,
we could construct and present forms using commands such as:
#!ipxe
form Login to ${url}
item username Username or email address
item --secret password Password
present
or
#!ipxe
form Configure IPv4 networking for ${netX/ifname}
item netX/ip IPv4 address
item netX/netmask Subnet mask
item netX/gateway Gateway address
item netX/dns DNS server address
present
Reusing the same abstract model for both menus and forms allows us to
minimise the increase in code size, since the implementation of the
"form" and "item" commands is essentially zero-cost.
Rename everything within the abstract data model from "menu" to
"dynamic user interface" to reflect this generalisation.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Add support for wraparound scrolling and allow the tab key to be used
to move forward through a list of elements, wrapping back around to
the beginning of the list on overflow.
This is mildly useful for a menu, and likely to be a strong user
expectation for an interactive form.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Switch terminology for the "item" command from "item <label> <text>"
to "item <name> <text>", in preparation for repurposing the "item"
command to cover interactive forms as well as menus.
Since this renaming affects only a positional parameter, it does not
break compatibility with any existing scripts.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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These files cannot be automatically relicensed by util/relicense.pl
since they either contain unusual but trivial contributions (such as
the addition of __nonnull function attributes), or contain lines
dating back to the initial git revision (and so require manual
knowledge of the code's origin).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Parsing a timeout value (specified in milliseconds) into an internal
timeout value measured in timer ticks is a common operation. Provide
a parse_timeout() value to carry out this conversion automatically.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Nothing currently prevents a menu separator from being assigned a
shortcut key, and then from being selected using that shortcut key.
This produces an inconsistency in the user interface, since separators
cannot be selected by other means of menu navigation (arrow keys, page
up/down, etc).
It would be trivial to prevent separators from being assigned shortcut
keys, but this would eliminate one potentially useful use case: having
a large menu and using shortcut keys to jump to a section within the
menu.
Fix by treating a shortcut key on a separator as equivalent to "select
the separator, then press the down arrow key". This has the effect of
moving to the first non-separator menu item following the specified
separator, which is probably the most intuitive behaviour. (The
existing logic for moving the selection already handles the various
nasty corner cases such as a menu ending with one or more separators.)
Reported-by: Ján ONDREJ (SAL) <ondrejj@salstar.sk>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Unrecognised keys may be returned by getkey() as character code zero,
which currently matches against the first menu item with no shortcut
key defined.
Prevent this unintended behaviour by explicitly checking that the menu
item has a defined shortcut key.
Reported-by: Ján ONDREJ (SAL) <ondrejj@salstar.sk>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Suggested-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Suggested-by: Robin Smidsrød <robin@smidsrod.no>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Reported-by: Robin Smidsrød <robin@smidsrod.no>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Inspired-by: Robin Smidsrød <robin@smidsrod.no>
Tested-by: Robin Smidsrød <robin@smidsrod.no>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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