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https://github.com/tw93/Mole.git
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🎨 Continue to upgrade to easy to use
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Tw93
@@ -1,64 +1,29 @@
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#!/bin/bash
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# Paginated menu with arrow key navigation
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# Proper paginated menu with arrow key navigation
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# 10 items per page, up/down to navigate, space to select, left/right to change pages
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set -euo pipefail
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# Terminal control functions
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hide_cursor() { printf '\033[?25l' >&2; }
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show_cursor() { printf '\033[?25h' >&2; }
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clear_screen() { printf '\033[2J\033[H' >&2; }
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enter_alt_screen() { tput smcup >/dev/null 2>&1 || true; }
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leave_alt_screen() { tput rmcup >/dev/null 2>&1 || true; }
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disable_wrap() { printf '\033[?7l' >&2; } # disable line wrap
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enable_wrap() { printf '\033[?7h' >&2; }
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enter_alt_screen() { tput smcup 2>/dev/null || true; }
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leave_alt_screen() { tput rmcup 2>/dev/null || true; }
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# Read single key with arrow key support (macOS bash 3.2 friendly)
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read_key() {
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local key seq
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IFS= read -rsn1 key || return 1
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# Some terminals may yield empty on Enter with -n1
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if [[ -z "$key" ]]; then
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echo "ENTER"
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return 0
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fi
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case "$key" in
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$'\033')
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# Read next two bytes within 1s: "[A", "[B", ...
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if IFS= read -rsn2 -t 1 seq 2>/dev/null; then
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case "$seq" in
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"[A") echo "UP" ;;
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"[B") echo "DOWN" ;;
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"[C") echo "RIGHT" ;;
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"[D") echo "LEFT" ;;
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*) echo "OTHER" ;;
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esac
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else
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echo "OTHER"
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fi
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;;
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' ') echo "SPACE" ;;
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$'\n'|$'\r') echo "ENTER" ;;
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'q'|'Q') echo "QUIT" ;;
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'a'|'A') echo "ALL" ;;
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'n'|'N') echo "NONE" ;;
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'?') echo "HELP" ;;
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*) echo "OTHER" ;;
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esac
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}
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# Paginated multi-select menu
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# Main paginated multi-select menu function
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paginated_multi_select() {
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local title="$1"
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shift
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local -a items=("$@")
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# Validation
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if [[ ${#items[@]} -eq 0 ]]; then
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echo "No items provided" >&2
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return 1
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fi
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local total_items=${#items[@]}
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local items_per_page=10 # Reduced for better readability
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local items_per_page=10
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local total_pages=$(( (total_items + items_per_page - 1) / items_per_page ))
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local current_page=0
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local cursor_pos=0 # Position within current page (0-9)
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local cursor_pos=0
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local -a selected=()
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# Initialize selection array
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@@ -69,78 +34,60 @@ paginated_multi_select() {
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# Cleanup function
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cleanup() {
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show_cursor
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stty echo 2>/dev/null || true
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stty icanon 2>/dev/null || true
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stty echo icanon 2>/dev/null || true
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leave_alt_screen
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enable_wrap
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}
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trap cleanup EXIT INT TERM
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# Setup terminal for optimal responsiveness
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stty -echo -icanon min 1 time 0 2>/dev/null || true
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# Setup terminal
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stty -echo -icanon 2>/dev/null || true
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enter_alt_screen
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disable_wrap
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hide_cursor
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# Main display function
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first_draw=1
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# Helper: print one cleared line
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print_line() {
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printf "\r\033[2K%s\n" "$1" >&2
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}
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# Helper functions
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print_line() { printf "\r\033[2K%s\n" "$1" >&2; }
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# Helper: render one item line at given page position
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render_item_line() {
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local page_pos=$1
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local start_idx=$((current_page * items_per_page))
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local i=$((start_idx + page_pos))
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render_item() {
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local idx=$1 is_current=$2
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local checkbox="☐"
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local cursor_marker=" "
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[[ ${selected[i]} == true ]] && checkbox="☑"
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if [[ $page_pos -eq $cursor_pos ]]; then
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cursor_marker="▶ "
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printf "\r\033[2K\033[7m%s%s %s\033[0m\n" "$cursor_marker" "$checkbox" "${items[i]}" >&2
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[[ ${selected[idx]} == true ]] && checkbox="☑"
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if [[ $is_current == true ]]; then
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printf "\r\033[2K\033[7m▶ %s %s\033[0m\n" "$checkbox" "${items[idx]}" >&2
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else
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printf "\r\033[2K%s%s %s\n" "$cursor_marker" "$checkbox" "${items[i]}" >&2
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printf "\r\033[2K %s %s\n" "$checkbox" "${items[idx]}" >&2
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fi
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}
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# Helper: move cursor to top-left anchor saved by tput sc
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to_anchor() { tput rc >/dev/null 2>&1 || true; }
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# Full draw of entire screen - simplified for stability
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# Draw the complete menu
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draw_menu() {
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# Always do full screen redraw for reliability
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clear_screen
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printf "\033[H\033[J" >&2 # Clear screen and move to top
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# Simple header
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printf "%s\n" "$title" >&2
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printf "%s\n" "$(printf '=%.0s' $(seq 1 ${#title}))" >&2
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# Header
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printf "%s\n%s\n" "$title" "$(printf '=%.0s' $(seq 1 ${#title}))" >&2
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# Status bar
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# Status
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local selected_count=0
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for ((i = 0; i < total_items; i++)); do
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[[ ${selected[i]} == true ]] && ((selected_count++))
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done
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printf "Page %d/%d │ Total: %d │ Selected: %d\n" \
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printf "Page %d/%d │ Total: %d │ Selected: %d\n\n" \
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$((current_page + 1)) $total_pages $total_items $selected_count >&2
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print_line ""
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# Calculate page boundaries
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# Items for current page
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local start_idx=$((current_page * items_per_page))
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local end_idx=$((start_idx + items_per_page - 1))
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[[ $end_idx -ge $total_items ]] && end_idx=$((total_items - 1))
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# Display items for current page
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for ((i = start_idx; i <= end_idx; i++)); do
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local page_pos=$((i - start_idx))
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render_item_line "$page_pos"
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local is_current=false
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[[ $((i - start_idx)) -eq $cursor_pos ]] && is_current=true
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render_item $i $is_current
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done
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# Fill empty slots to always print items_per_page lines
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local items_on_page=$((end_idx - start_idx + 1))
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for ((i = items_on_page; i < items_per_page; i++)); do
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# Fill empty slots
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local items_shown=$((end_idx - start_idx + 1))
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for ((i = items_shown; i < items_per_page; i++)); do
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print_line ""
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done
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@@ -148,45 +95,42 @@ paginated_multi_select() {
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print_line "↑↓: Navigate | Space: Select | Enter: Confirm | Q: Exit"
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}
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# Help screen
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# Show help screen
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show_help() {
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clear_screen
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echo "App Uninstaller - Help" >&2
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echo "======================" >&2
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echo >&2
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echo " ↑ / ↓ Navigate up/down" >&2
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echo " ← / → Previous/next page" >&2
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echo " Space Select/deselect app" >&2
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echo " Enter Confirm selection" >&2
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echo " A Select all" >&2
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echo " N Deselect all" >&2
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echo " Q Exit" >&2
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echo >&2
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read -p "Press any key to continue..." -n 1 >&2
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printf "\033[H\033[J" >&2
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cat >&2 << 'EOF'
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Help - Navigation Controls
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==========================
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↑ / ↓ Navigate up/down
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Space Select/deselect item
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Enter Confirm selection
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A Select all
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N Deselect all
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Q Exit
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Press any key to continue...
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EOF
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read -n 1 -s >&2
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}
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# Main loop - simplified to always do full redraws for stability
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# Main interaction loop
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while true; do
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draw_menu # Always full redraw to avoid display issues
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draw_menu
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local key=$(read_key)
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# Immediate exit key
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if [[ "$key" == "QUIT" ]]; then
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cleanup
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return 1
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fi
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case "$key" in
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"QUIT") cleanup; return 1 ;;
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"UP")
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if [[ $cursor_pos -gt 0 ]]; then
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((cursor_pos--))
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elif [[ $current_page -gt 0 ]]; then
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((current_page--))
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cursor_pos=$((items_per_page - 1))
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# Calculate cursor position for new page
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local start_idx=$((current_page * items_per_page))
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local end_idx=$((start_idx + items_per_page - 1))
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[[ $end_idx -ge $total_items ]] && cursor_pos=$((total_items - start_idx - 1))
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local items_on_page=$((total_items - start_idx))
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[[ $items_on_page -gt $items_per_page ]] && items_on_page=$items_per_page
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cursor_pos=$((items_on_page - 1))
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fi
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;;
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"DOWN")
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@@ -201,33 +145,13 @@ paginated_multi_select() {
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cursor_pos=0
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fi
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;;
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"LEFT")
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if [[ $current_page -gt 0 ]]; then
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((current_page--))
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cursor_pos=0
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fi
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;;
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"RIGHT")
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if [[ $current_page -lt $((total_pages - 1)) ]]; then
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((current_page++))
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cursor_pos=0
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fi
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;;
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"PGUP")
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current_page=0
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cursor_pos=0
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;;
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"PGDOWN")
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current_page=$((total_pages - 1))
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cursor_pos=0
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;;
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"SPACE")
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local actual_idx=$((current_page * items_per_page + cursor_pos))
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if [[ $actual_idx -lt $total_items ]]; then
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if [[ ${selected[actual_idx]} == true ]]; then
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selected[actual_idx]=false
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local idx=$((current_page * items_per_page + cursor_pos))
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if [[ $idx -lt $total_items ]]; then
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if [[ ${selected[idx]} == true ]]; then
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selected[idx]=false
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else
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selected[actual_idx]=true
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selected[idx]=true
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fi
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fi
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;;
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@@ -241,11 +165,9 @@ paginated_multi_select() {
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selected[i]=false
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done
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;;
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"HELP")
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show_help
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;;
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"HELP") show_help ;;
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"ENTER")
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# If no items are selected, select the current item
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# Auto-select current item if nothing selected
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local has_selection=false
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for ((i = 0; i < total_items; i++)); do
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if [[ ${selected[i]} == true ]]; then
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@@ -255,58 +177,38 @@ paginated_multi_select() {
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done
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if [[ $has_selection == false ]]; then
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# Select current item under cursor
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local actual_idx=$((current_page * items_per_page + cursor_pos))
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if [[ $actual_idx -lt $total_items ]]; then
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selected[actual_idx]=true
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fi
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local idx=$((current_page * items_per_page + cursor_pos))
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[[ $idx -lt $total_items ]] && selected[idx]=true
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fi
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# Build result
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# Store result in global variable instead of returning via stdout
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local result=""
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for ((i = 0; i < total_items; i++)); do
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if [[ ${selected[i]} == true ]]; then
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result="$result $i"
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fi
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done
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cleanup
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echo "${result# }"
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local final_result="${result# }"
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# Remove the trap to avoid cleanup on normal exit
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trap - EXIT INT TERM
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# Store result in global variable
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MOLE_SELECTION_RESULT="$final_result"
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# Manually cleanup terminal before returning
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show_cursor
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stty echo icanon 2>/dev/null || true
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leave_alt_screen
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return 0
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;;
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*)
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# Ignore unrecognized keys - just continue the loop
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;;
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esac
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done
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}
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# Demo function
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demo_paginated() {
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echo "=== Paginated Multi-select Demo ===" >&2
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# Create test data
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local test_items=()
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for i in {1..35}; do
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test_items+=("Application $i ($(( (RANDOM % 500) + 50 ))MB)")
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done
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local result
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result=$(paginated_multi_select "Choose Applications to Uninstall" "${test_items[@]}")
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local exit_code=$?
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if [[ $exit_code -eq 0 ]]; then
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if [[ -n "$result" ]]; then
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echo "Selected indices: $result" >&2
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echo "Count: $(echo $result | wc -w | tr -d ' ')" >&2
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else
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echo "No items selected" >&2
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fi
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else
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echo "Selection cancelled" >&2
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fi
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}
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# Run demo if script is executed directly
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# Export function for external use
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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demo_paginated
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echo "This is a library file. Source it from other scripts." >&2
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exit 1
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fi
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Reference in New Issue
Block a user