Add statusline

view.go

@@ -8,25 +8,31 @@ import (
 type View struct {
 	cursor  Cursor
 	topline int
-	linesN  int
-	colsN   int
+	height  int
+	width   int
+
+	buf *Buffer
+	sl  Statusline
 
-	buf           *Buffer
 	mouseReleased bool
 
 	s tcell.Screen
 }
 
-func newViewFromBuffer(buf *Buffer, s tcell.Screen) *View {
+func newView(buf *Buffer, s tcell.Screen) *View {
+	w, h := s.Size()
+	return newViewWidthHeight(buf, s, w, h)
+}
+
+func newViewWidthHeight(buf *Buffer, s tcell.Screen, w, h int) *View {
 	v := new(View)
 
 	v.buf = buf
 	v.s = s
-	w, h := s.Size()
 
 	v.topline = 0
-	v.linesN = h
-	v.colsN = w
+	v.height = h - 2
+	v.width = w
 	v.cursor = Cursor{
 		x:   0,
 		y:   0,
@@ -34,12 +40,16 @@ func newViewFromBuffer(buf *Buffer, s tcell.Screen) *View {
 		v:   v,
 	}
 
+	v.sl = Statusline{
+		v: v,
+	}
+
 	return v
 }
 
 // Returns an int describing how the screen needs to be redrawn
 // 0: Screen does not need to be redrawn
-// 1: Only the cursor needs to be redrawn
+// 1: Only the cursor/statusline needs to be redrawn
 // 2: Everything needs to be redrawn
 func (v *View) handleEvent(event tcell.Event) int {
 	var ret int
@@ -62,6 +72,10 @@ func (v *View) handleEvent(event tcell.Event) int {
 			v.buf.insert(v.cursor.loc, "\n")
 			v.cursor.right()
 			ret = 2
+		case tcell.KeySpace:
+			v.buf.insert(v.cursor.loc, " ")
+			v.cursor.right()
+			ret = 2
 		case tcell.KeyBackspace2:
 			if v.cursor.loc > 0 {
 				v.cursor.left()
@@ -72,6 +86,13 @@ func (v *View) handleEvent(event tcell.Event) int {
 			v.buf.insert(v.cursor.loc, "\t")
 			v.cursor.right()
 			ret = 2
+		case tcell.KeyCtrlS:
+			err := v.buf.save()
+			if err != nil {
+				// Error!
+			}
+			// Need to redraw the status line
+			ret = 1
 		case tcell.KeyRune:
 			v.buf.insert(v.cursor.loc, string(e.Rune()))
 			v.cursor.right()
@@ -88,8 +109,8 @@ func (v *View) handleEvent(event tcell.Event) int {
 
 		switch button {
 		case tcell.Button1:
-			if y-v.topline > v.linesN-1 {
-				y = v.linesN + v.topline - 1
+			if y-v.topline > v.height-1 {
+				y = v.height + v.topline - 1
 			}
 			if y > len(v.buf.lines) {
 				y = len(v.buf.lines) - 1
@@ -120,7 +141,7 @@ func (v *View) handleEvent(event tcell.Event) int {
 				return 0
 			}
 		case tcell.WheelDown:
-			if v.topline < len(v.buf.lines)-v.linesN {
+			if v.topline < len(v.buf.lines)-v.height {
 				v.topline++
 				return 2
 			} else {
@@ -134,8 +155,8 @@ func (v *View) handleEvent(event tcell.Event) int {
 		v.topline = cy
 		ret = 2
 	}
-	if cy > v.topline+v.linesN-1 {
-		v.topline = cy - v.linesN + 1
+	if cy > v.topline+v.height-1 {
+		v.topline = cy - v.height + 1
 		ret = 2
 	}
 
@@ -143,9 +164,8 @@ func (v *View) handleEvent(event tcell.Event) int {
 }
 
 func (v *View) display() {
-
 	var charNum int
-	for lineN := 0; lineN < v.linesN; lineN++ {
+	for lineN := 0; lineN < v.height; lineN++ {
 		if lineN+v.topline >= len(v.buf.lines) {
 			break
 		}