From 89332994eb38982a8bd04ccc008bc5aba0c58908 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Wed, 28 Oct 2015 23:31:49 -0400
Subject: tui_show_prompt(): Implement (line editing missing)

---
diff --git a/src/ui/tui.sh b/src/ui/tui.sh
index 6e8b4e1..40a2857 100644
--- a/src/ui/tui.sh
+++ b/src/ui/tui.sh
@@ -174,8 +174,91 @@ tui_show_menu()
 tui_show_prompt()
 {
 	local title="${1}"
+	local len=${2}
+	shift 2
+	local w=
+	local y=
+	local x=
+	local i=
+	local line=''
 	local input=''
-	shift 1
+	local curpos=0
+	local focus=0
+	local key=
+
+	# Calculate width and draw the box.
+	w=$(expr ${#title} + 4)
+	if [ $(expr ${len} + 7) -gt ${w} ]; then
+		w=$(expr ${len} + 7)
+	fi
+	read -r y x <<-EOF
+		$(_tui_box ${w} 7)
+		EOF
+
+	# Write the title.
+	term_cursor_down 1
+	term_cursor_forward 2
+	term_write "${title}"
+
+	# Build blank input line.
+	i=0
+	while [ ${i} -le ${len} ]; do
+		line="${line} "
+		i=$(($i + 1))
+	done
+
+	# Event loop.
+	while :; do
+		# Draw a button.
+		term_cursor_position $(($y + 5)) $(($x + $w - 6))
+		if [ ${focus} -eq 1 ]; then
+			term_attr_on reverse
+			term_write '[OK]'
+			term_attr_off reverse
+		else
+			term_write '[OK]'
+		fi
+
+		# Draw a textbox.
+		term_cursor_position $(($y + 3)) $(($x + 2))
+		term_write '['
+		term_attr_on underline
+		term_write "${line}"
+		term_attr_off underline
+		term_write ']'
+		term_cursor_position $(($y + 3)) $(($x + 3))
+		term_attr_on underline
+		term_write "${input}"
+		term_attr_off underline
+
+		# Put the cursor in the text box.
+		if [ ${focus} -eq 0 ]; then
+			term_show_cursor
+			term_cursor_position $(($y + 3)) $(($x + 3 + $curpos))
+		else
+			term_hide_cursor
+		fi
+
+		# Input.
+		key="$(term_getch)"
+		if [ "x${key}" = xKEY_TAB ]; then
+			focus=$(expr \( ${focus} + 1 \) % 2)
+		elif [ ${focus} -eq 0 ]; then
+			case "${key}" in
+				KEY_ENTER) break;;
+				# TODO: Line editing
+				*)
+					input="${input}${key}"
+					curpos=$(($curpos + 1))
+					;;
+			esac
+		elif [ ${focus} -eq 1 ]; then
+			case "${key}" in
+				KEY_ENTER | KEY_SPACE) break;;
+			esac
+		fi
+	done
 
+	printf '%s' "${input}"
 	return 0
 }
--
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