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# TUI user interface
#
# Copyright (C) 2015 Patrick "P. J." McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
tui_init_ui()
{
term_init
term_raw
term_noecho
term_hide_cursor
term_clear
}
tui_exit_ui()
{
term_attr_reset
term_clear
term_show_cursor
term_echo
term_cooked
}
_tui_box()
{
local w=${1}
local h=${2}
shift 2
local y=
local x=
local i=
local line=''
# Clear the screen and set the cursor position to center the box.
term_clear
y=$(expr \( $(term_lines) - ${h} \) / 2)
x=$(expr \( $(term_columns) - ${w} \) / 2)
term_cursor_position ${y} ${x}
# Build the line.
i=0
while [ ${i} -lt ${w} ]; do
line="${line} "
i=$(($i + 1))
done
# Draw white box background lines.
term_fg_color_set black
term_bg_color_set white
i=0
while [ ${i} -lt ${h} ]; do
term_write "${line}"
term_cursor_back ${w}
term_cursor_down 1
i=$(($i + 1))
done
# Reset the cursor to the top-left corner of the box.
term_cursor_up ${h}
printf '%d %d' ${y} ${x}
return 0
}
_tui_dialog()
{
local lvl="${1}"
local fmt="${2}"
shift 2
local msg=''
# Format the message.
msg="$(printf "${fmt}" "${@}")"
# Draw the box.
_tui_box $(expr ${#msg} + 8) 5 >/dev/null
# Draw an icon.
term_cursor_forward 2
case "${lvl}" in
warn)
term_fg_color_set yellow
term_write ' .'
term_cursor_back 2
term_cursor_down 1
term_attr_on underline
term_write '/!\'
term_attr_off underline
term_fg_color_set black
;;
err)
term_cursor_forward 1
term_fg_color_set red
term_attr_on underline
term_write ' '
term_attr_off underline
term_cursor_back 2
term_cursor_down 1
term_write '('
term_attr_on underline
term_write 'x'
term_attr_off underline
term_write ')'
term_fg_color_set black
;;
esac
# Write the message.
term_cursor_forward 1
term_write "${msg}"
# Draw a (selected) button.
term_cursor_back 4
term_cursor_down 2
term_attr_on reverse
term_write '[OK]'
term_attr_off reverse
while :; do
case "$(term_getch)" in
KEY_ENTER | KEY_SPACE) break;;
esac
done
return 0
}
tui_dbg()
{
: No output.
}
tui_info()
{
: No output.
}
tui_warn()
{
local fmt="${1}"
shift 1
_tui_dialog warn "${fmt}" "${@}"
}
tui_err()
{
local fmt="${1}"
shift 1
_tui_dialog err "${fmt}" "${@}"
}
tui_show_menu()
{
local title="${1}"
shift 1
return 0
}
tui_show_prompt()
{
local title="${1}"
local input=''
shift 1
return 0
}
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