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Initial commit of Zsh Navigation Tools

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Sebastian Gniazdowski 2015-09-20 14:39:46 +02:00
commit 4c292ea2b0
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238
plugins/zsh-navigation-tools/n-list-input Normal file
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# Copy this file into /usr/share/zsh/site-functions/
# and add 'autoload n-list-input` to .zshrc
#
# This is an internal function not for direct use
emulate -L zsh
zmodload zsh/curses
setopt typesetsilent
# Compute first to show index
_nlist_compute_first_to_show_idx() {
from_what_idx_list_is_shown=0+((current_idx-1)/page_height)*page_height+1
}
typeset -ga reply
reply=( -1 '' )
integer current_idx="$1"
integer from_what_idx_list_is_shown="$2"
integer page_height="$3"
integer page_width="$4"
integer last_element="$5"
integer hscroll="$6"
local key="$7"
integer search="$8"
local buffer="$9"
integer uniq_mode="$10"
#
# Listening for input
#
if [ "$search" = "0" ]; then
case "$key" in
(UP|k|$'\C-P')
# Are there any elements before the current one?
[ "$current_idx" -gt 1 ] && current_idx=current_idx-1;
_nlist_compute_first_to_show_idx
;;
(DOWN|j|$'\C-N')
# Are there any elements after the current one?
[ "$current_idx" -lt "$last_element" ] && current_idx=current_idx+1;
_nlist_compute_first_to_show_idx
;;
(PPAGE)
current_idx=current_idx-page_height
[ "$current_idx" -lt 1 ] && current_idx=1;
_nlist_compute_first_to_show_idx
;;
(NPAGE|" ")
current_idx=current_idx+page_height
[ "$current_idx" -gt "$last_element" ] && current_idx=last_element;
_nlist_compute_first_to_show_idx
;;
($'\C-U')
current_idx=current_idx-page_height/2
[ "$current_idx" -lt 1 ] && current_idx=1;
_nlist_compute_first_to_show_idx
;;
($'\C-D')
current_idx=current_idx+page_height/2
[ "$current_idx" -gt "$last_element" ] && current_idx=last_element;
_nlist_compute_first_to_show_idx
;;
(HOME|g)
current_idx=1
_nlist_compute_first_to_show_idx
;;
(END|G)
current_idx=last_element
_nlist_compute_first_to_show_idx
;;
($'\n')
# Is that element selectable?
# Check for this only when there is no search
if [[ "$NLIST_SEARCH_BUFFER" != "" || "$NLIST_IS_UNIQ_MODE" -eq 1 ||
${NLIST_NONSELECTABLE_ELEMENTS[(r)$current_idx]} != $current_idx ]]
then
# Save current element in the result variable
reply=( $current_idx SELECT )
fi
;;
(q)
reply=( -1 QUIT )
;;
(/)
search=1
_nlist_cursor_visibility 1
;;
($'\t')
reply=( $current_idx LEAVE )
;;
($'\C-L')
reply=( -1 REDRAW )
;;
(\])
[[ "${(t)NLIST_HOP_INDEXES}" = "array" || "${(t)NLIST_HOP_INDEXES}" = "array-local" ]] &&
[ -z "$NLIST_SEARCH_BUFFER" ] && [ "$NLIST_IS_UNIQ_MODE" -eq 0 ] &&
for idx in "${(n)NLIST_HOP_INDEXES[@]}"; do
if [ "$idx" -gt "$current_idx" ]; then
current_idx=$idx
_nlist_compute_first_to_show_idx
break
fi
done
;;
(\[)
[[ "${(t)NLIST_HOP_INDEXES}" = "array" || "${(t)NLIST_HOP_INDEXES}" = "array-local" ]] &&
[ -z "$NLIST_SEARCH_BUFFER" ] && [ "$NLIST_IS_UNIQ_MODE" -eq 0 ] &&
for idx in "${(nO)NLIST_HOP_INDEXES[@]}"; do
if [ "$idx" -lt "$current_idx" ]; then
current_idx=$idx
_nlist_compute_first_to_show_idx
break
fi
done
;;
('<'|'{'|LEFT|'h')
hscroll=hscroll-7
[ "$hscroll" -lt 0 ] && hscroll=0
;;
('>'|'}'|RIGHT|'l')
hscroll+=7
;;
($'\E')
buffer=""
;;
(o|$'\C-O')
uniq_mode=1-uniq_mode
;;
(*)
;;
esac
else
case "$key" in
($'\n')
search=0
_nlist_cursor_visibility 0
;;
($'\C-L')
reply=( -1 REDRAW )
;;
#
# Slightly limited navigation
#
(UP|$'\C-P')
[ "$current_idx" -gt 1 ] && current_idx=current_idx-1;
_nlist_compute_first_to_show_idx
;;
(DOWN|$'\C-N')
[ "$current_idx" -lt "$last_element" ] && current_idx=current_idx+1;
_nlist_compute_first_to_show_idx
;;
(PPAGE)
current_idx=current_idx-page_height
[ "$current_idx" -lt 1 ] && current_idx=1;
_nlist_compute_first_to_show_idx
;;
(NPAGE)
current_idx=current_idx+page_height
[ "$current_idx" -gt "$last_element" ] && current_idx=last_element;
_nlist_compute_first_to_show_idx
;;
($'\C-U')
current_idx=current_idx-page_height/2
[ "$current_idx" -lt 1 ] && current_idx=1;
_nlist_compute_first_to_show_idx
;;
($'\C-D')
current_idx=current_idx+page_height/2
[ "$current_idx" -gt "$last_element" ] && current_idx=last_element;
_nlist_compute_first_to_show_idx
;;
(HOME)
current_idx=1
_nlist_compute_first_to_show_idx
;;
(END)
current_idx=last_element
_nlist_compute_first_to_show_idx
;;
(LEFT)
hscroll=hscroll-7
[ "$hscroll" -lt 0 ] && hscroll=0
;;
(RIGHT)
hscroll+=7
;;
(F1|F2|F3|F4|F5|F6|F7|F8|F9|F10)
# ignore
;;
#
# The input
#
($'\b'|$'\C-?'|BACKSPACE)
buffer="${buffer%?}"
;;
($'\C-W')
[ "$buffer" = "${buffer% *}" ] && buffer="" || buffer="${buffer% *}"
;;
($'\C-K')
buffer=""
;;
($'\E')
buffer=""
search=0
_nlist_cursor_visibility 0
;;
($'\C-O')
uniq_mode=1-uniq_mode
;;
(*)
if [[ $#key == 1 && $((#key)) -lt 31 ]]; then
# ignore all other control keys
else
buffer+="$key"
fi
;;
esac
fi
reply[3]="$current_idx"
reply[4]="$from_what_idx_list_is_shown"
reply[5]="$hscroll"
reply[6]="$search"
reply[7]="$buffer"
reply[8]="$uniq_mode"
# vim: set filetype=zsh: