Working on Editing

widgets/json_content.go

@@ -52,8 +52,19 @@ type JsonContent struct {
 
 	vimMode bool
 	cursor  int
+
+	editKey, editVal bool
+	editValType      int
 }
 
+const (
+	JsonTpString = iota
+	JsonTpBool
+	JsonTpNumber
+	JsonTpObject
+	JsonTpArray
+)
+
 var _ wd.Widget = (*JsonContent)(nil)
 
 func NewJsonContent(id string, style tcell.Style) *JsonContent {
@@ -128,7 +139,7 @@ func (w *JsonContent) Draw(screen tcell.Screen) {
 	x, y = x+1, y+1
 	h := w.h - brdSz
 	ln := len(w.contents)
-	st, ed := 0, ln-1
+	start, end := 0, ln-1
 	if ln == 0 {
 		return
 	}
@@ -136,50 +147,93 @@ func (w *JsonContent) Draw(screen tcell.Screen) {
 		mid := h / 2
 		if w.cursor < mid {
 			// contents need to start at 0
-			ed = h + 1
+			end = h + 1
 		} else if w.cursor > ln-mid {
 			// contents need to begin at ln-h
-			st = ln - h + 1
+			start = ln - h + 1
 		} else {
-			st = w.cursor - mid
-			ed = st + h + 1
+			start = w.cursor - mid
+			end = start + h + 1
 		}
 	}
 	// ed cannot be higher than ln-1
-	if st < 0 {
-		st = 0
+	if start < 0 {
+		start = 0
 	}
-	if ed > ln-1 {
-		ed = ln - 1
+	if end > ln-1 {
+		end = ln - 1
 	}
-	for i := st; i <= ed; i++ {
-		st := w.style
-		dim := true
-		if i == w.cursor {
-			dim = false
-		} else {
-			st = st.Foreground(tcell.ColorGreen)
+	for i := start; i <= end; i++ {
+		stl := w.style
+		dim := i != w.cursor
+		if dim {
+			stl = stl.Foreground(tcell.ColorGreen)
 		}
 		txt := w.contents[i]
 		if len(txt) > w.w-brdSz && w.w-brdSz >= 0 {
 			txt = txt[:(w.w - brdSz)]
 		}
-
 		if w.editable {
-			var key, val string
-			pts := strings.Split(txt, ":")
-			if len(pts) == 2 {
-				key, val = pts[0], pts[1]
-			}
-			wh.DrawText(w.x, y, key, st.Dim(dim).Bold(!dim), screen)
-			st = st.Reverse(true)
-			wh.DrawText(w.x, y, val, st.Dim(dim).Bold(!dim), screen)
+			w.drawEditableLine(screen, i, w.x, y, txt, stl, dim)
 		} else {
-			wh.DrawText(w.x, y, txt, st.Dim(dim).Bold(!dim), screen)
+			w.drawReadOnlyLine(screen, i, w.x, y, txt, stl, dim)
 		}
 		y++
 	}
 }
+func (w *JsonContent) drawReadOnlyLine(screen tcell.Screen, idx, x, y int, txt string, stl tcell.Style, dim bool) {
+	wh.DrawText(x, y, txt, stl.Dim(dim).Bold(!dim), screen)
+}
+func (w *JsonContent) drawEditableLine(screen tcell.Screen, idx, x, y int, txt string, stl tcell.Style, dim bool) {
+	parseQuoted := func(txt string) (string, string) {
+		var v string
+		var slash bool
+		for i := range txt {
+			if txt[i] == '\\' {
+				slash = true
+			} else if slash {
+				slash = false
+			} else if txt[i] == '"' {
+				return v, txt[i+1:]
+			}
+			v = fmt.Sprintf("%s%c", v, txt[i])
+		}
+		// We didn't hit an ending quote
+		return v, ""
+	}
+	var key, val, wrk string
+	// The key should be a quoted value
+	for i := range txt {
+		if txt[i] == '"' && len(txt) > i {
+			key, wrk = parseQuoted(txt[i:])
+			break
+		}
+	}
+	txt = strings.Trim(wrk, ": ")
+	if len(txt) > 0 {
+		switch txt[0] {
+		case '"':
+			val, wrk = parseQuoted(txt[1:])
+			w.editValType = JsonTpString
+		case '{':
+			w.editValType = JsonTpObject
+		case '[':
+			w.editValType = JsonTpArray
+		default:
+			if txt == "true" || txt == "false" {
+				// Editing a boolean value
+				w.editValType = JsonTpBool
+			} else {
+				// Must be a number, right?
+				w.editValType = JsonTpNumber
+			}
+		}
+	}
+
+	keyStr := fmt.Sprintf("%s: ", key)
+	wh.DrawText(w.x, y, keyStr, stl.Dim(dim).Bold(!dim), screen)
+	wh.DrawText(w.x, y+len(keyStr), val, stl.Dim(dim).Bold(!dim), screen)
+}
 
 func (w *JsonContent) SetStyle(s tcell.Style) { w.style = s }
 func (w *JsonContent) Active() bool           { return w.active }