From 8ef481706897209c66e41fa3ee5b20a50d965b6a Mon Sep 17 00:00:00 2001
From: Shingo Kawamura <blp1526@gmail.com>
Date: Wed, 17 Jan 2018 00:09:57 +0900
Subject: [PATCH] Add SetCursor

---
 README.md      |  2 +-
 lib/isac.go    | 23 +++++++++++++----------
 lib/row/row.go | 29 +++++++++++++++++++++--------
 3 files changed, 35 insertions(+), 19 deletions(-)

diff --git a/README.md b/README.md
index 2fb6324..e73744d 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ $ isac
 
 |Name|Description|
 |-|-|
-|ESC, C-c|exit|
+|C-c|exit|
 |Arrow Up, C-p|move current row up|
 |Arrow Down, C-n|move current row down|
 |C-u|power on current row's server|
diff --git a/lib/isac.go b/lib/isac.go
index 20d3fa9..6aab13e 100644
--- a/lib/isac.go
+++ b/lib/isac.go
@@ -84,7 +84,7 @@ MAINLOOP:
 		switch ev.Type {
 		case termbox.EventKey:
 			switch ev.Key {
-			case termbox.KeyEsc, termbox.KeyCtrlC:
+			case termbox.KeyCtrlC:
 				break MAINLOOP
 			case termbox.KeyArrowUp, termbox.KeyCtrlP:
 				i.currentRowUp()
@@ -140,21 +140,22 @@ func (i *Isac) draw(message string) {
 		lines := []string{
 			"Quick reference for isac keybindings:",
 			"",
-			"<ESC>, <C-c>            exit",
-			"<Arrow Up>, <C-p>       move current row up",
-			"<Arrow Down>, <C-n>     move current row down",
-			"<C-u>                   power on current row's server",
-			"<C-r>                   refresh rows",
-			"<BackSpace, C-b>, <C-h> delete a filter character",
-			"<C-s>                   sort rows",
-			"<C-/>                   show help",
-			"<Enter>                 show current row's detail",
+			"<C-c>                    exit",
+			"<Arrow Up>, <C-p>        move current row up",
+			"<Arrow Down>, <C-n>      move current row down",
+			"<C-u>                    power on current row's server",
+			"<C-r>                    refresh rows",
+			"<BackSpace>, C-b>, <C-h> delete a filter character",
+			"<C-s>                    sort rows",
+			"<C-/>                    show help",
+			"<Enter>                  show current row's detail",
 		}
 
 		for index, line := range lines {
 			i.setLine(index, line)
 		}
 
+		termbox.HideCursor()
 		termbox.Flush()
 		return
 	}
@@ -180,6 +181,7 @@ func (i *Isac) draw(message string) {
 			i.setLine(index, line)
 		}
 
+		termbox.HideCursor()
 		termbox.Flush()
 		return
 	}
@@ -215,6 +217,7 @@ func (i *Isac) draw(message string) {
 	}
 
 	headers := i.row.Headers(i.message, strings.Join(i.zones, ", "), len(servers), i.currentNo(), i.filter)
+	termbox.SetCursor(i.row.CursorX, i.row.CursorY)
 
 	for index, header := range headers {
 		i.setLine(index, header)
diff --git a/lib/row/row.go b/lib/row/row.go
index 8a53c5c..d084b4a 100644
--- a/lib/row/row.go
+++ b/lib/row/row.go
@@ -1,10 +1,16 @@
 package row
 
-import "fmt"
+import (
+	"fmt"
+
+	runewidth "github.com/mattn/go-runewidth"
+)
 
 type Row struct {
 	MovableBottom int
 	Current       int
+	CursorX       int
+	CursorY       int
 }
 
 func New() *Row {
@@ -15,14 +21,21 @@ func New() *Row {
 func (r *Row) Headers(message string, zones string, totalServers int, currentNo int, filter string) (headers []string) {
 	id := fmt.Sprintf("%-12v", "ID")
 
-	headers = []string{
-		fmt.Sprintf("isac Message: %v", message),
-		fmt.Sprintf("Selected Zones: %v", zones),
-		fmt.Sprintf("Total Servers: %v, Current No.: %v", totalServers, currentNo),
-		fmt.Sprintf("Filter: %v", filter),
-		fmt.Sprintf(""),
-		fmt.Sprintf("Zone %v Status Name", id),
+	headers = append(headers, fmt.Sprintf("isac Message: %v", message))
+	headers = append(headers, fmt.Sprintf("Selected Zones: %v", zones))
+	headers = append(headers, fmt.Sprintf("Total Servers: %v, Current No.: %v", totalServers, currentNo))
+	headers = append(headers, fmt.Sprintf("Filter: %v", filter))
+
+	r.CursorY = len(headers) - 1
+	runes := []rune(headers[r.CursorY])
+	x := 0
+	for _, r := range runes {
+		x += runewidth.RuneWidth(r)
 	}
+	r.CursorX = x
+
+	headers = append(headers, fmt.Sprintf(""))
+	headers = append(headers, fmt.Sprintf("Zone %v Status Name", id))
 
 	return headers
 }