make json toolkit for the web?

Signed-off-by: Jeff Carr <jcarr@wit.com>

go.sum

@@ -0,0 +1,6 @@
+go.wit.com/dev/davecgh/spew v1.1.4 h1:C9hj/rjlUpdK+E6aroyLjCbS5MFcyNUOuP1ICLWdNek=
+go.wit.com/dev/davecgh/spew v1.1.4/go.mod h1:sihvWmnQ/09FWplnEmozt90CCVqBtGuPXM811tgfhFA=
+go.wit.com/gui/widget v1.1.4 h1:dCztWNSuTSSP+/M8h8F3cT7vWtoKdCL3DUQql0qLKdk=
+go.wit.com/gui/widget v1.1.4/go.mod h1:A6/FaiFQtAHTjgo7c4FrokXe6bXX1Cowo35b2Lgi31E=
+go.wit.com/log v0.5.5 h1:bK3b94uVKgev4jB5wg06FnvCFBEapQICTSH2YW+CWr4=
+go.wit.com/log v0.5.5/go.mod h1:BaJBfHFqcJSJLXGQ9RHi3XVhPgsStxSMZRlaRxW4kAo=

tree/json.go

@@ -0,0 +1,60 @@
+package tree
+
+import (
+	"fmt"
+
+	"go.wit.com/log"
+	"go.wit.com/gui/widget"
+)
+
+// makes a JSON version to pass to the toolkits ?
+// probably this should be in gui/toolkits/tree
+/*
+{"widget": {
+    "debug": "on",
+    "window": {
+        "title": "Sample Konfabulator Widget",
+        "name": "main_window",
+        "width": 500,
+        "height": 500
+    },
+    "image": {
+        "src": "Images/Sun.png",
+        "name": "sun1",
+        "hOffset": 250,
+        "vOffset": 250,
+        "alignment": "center"
+    },
+    "text": {
+        "data": "Click Here",
+        "size": 36,
+        "style": "bold",
+        "name": "text1",
+        "hOffset": 250,
+        "vOffset": 100,
+        "alignment": "center",
+        "onMouseUp": "sun1.opacity = (sun1.opacity / 100) * 90;"
+    }
+}}
+*/
+
+func (n *Node) Json() []string {
+	var all []string
+	switch n.WidgetType {
+	case widget.Checkbox:
+	case widget.Button:
+	case widget.Combobox:
+	case widget.Dropdown:
+	case widget.Textbox:
+	case widget.Spinner:
+	case widget.Slider:
+	case widget.Window:
+		tmp := fmt.Sprint("{ WidgetType :", n.WidgetType, "}")
+		all = append(all, tmp)
+		log.Warn(tmp)
+		return all
+	default:
+		log.Info("doUserEvent() type =", n.WidgetType)
+	}
+	return all
+}