work on hiding widgets

When widgets are hidden, their state works exactly the same
	as normal, but updates are not sent to the toolkits

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

action.go

@@ -0,0 +1,68 @@
+package gui
+
+/*
+	This is where the communication to the toolkit plugin happens.
+
+	We copy the current values from the widget node of the binary tree
+	and send an "action" to the toolkit over a channel.
+
+	TODO: use protobuf
+*/
+
+import (
+	"go.wit.com/log"
+	"go.wit.com/gui/widget"
+)
+
+// 2024/01/11 finally moving to type any. simplify to just 'value'
+// 2023/05/09 pretty clean
+// 2023/04/06 Queue() is also being used and channels are being used.
+func sendAction(n *Node, atype widget.ActionType) {
+	if n == nil {
+		return
+	}
+	if n.hidden {
+		return
+	}
+
+	var a widget.Action
+	a.ActionType = atype
+
+	// These should be "stable" at this point (2024/01/13)
+	a.WidgetId = n.id
+	a.ProgName = n.progname
+	a.Value = n.value
+	a.Direction = n.direction
+	a.Strings = n.strings
+
+	// These should be improved/deprecated based on the gui/widget docs
+	a.Expand = n.expand
+
+	a.X = n.X
+	a.Y = n.Y
+
+	a.AtW = n.AtW
+	a.AtH = n.AtH
+
+	if (n.parent != nil) {
+		a.ParentId = n.parent.id
+	}
+	a.WidgetType = n.WidgetType
+	sendActionToPlugin(&a)
+}
+
+// sends the action/event to each toolkit via a golang plugin channel
+func sendActionToPlugin(a *widget.Action) {
+	for _, aplug := range allPlugins {
+		log.Log(PLUG, "Action() aplug =", aplug.name, "Action type=", a.ActionType)
+		if (aplug.pluginChan == nil) {
+			log.Info("Action() retrieving the aplug.PluginChannel()", aplug.name)
+			aplug.pluginChan = aplug.PluginChannel()
+			log.Info("Action() retrieved", aplug.pluginChan)
+		}
+		log.Info("Action() SEND to pluginChan", aplug.name, a.ActionType, a.WidgetType, a.WidgetId, a.ProgName)
+		aplug.pluginChan <- *a
+		// added during debugging. might be a good idea in general for a tactile experience
+		log.Sleep(.02) // this delay makes it so SetText() works on initial widget creation
+	}
+}

box.go

@@ -4,39 +4,39 @@ import (
 	"go.wit.com/gui/widget"
 )
 
-func (parent *Node) NewBox(name string, b bool) *Node {
+func (parent *Node) NewBox(progname string, b bool) *Node {
-	newNode := parent.newNode(name, widget.Box)
+	newNode := parent.newNode(progname, widget.Box)
+	newNode.progname = progname
 
-	if ! newNode.hidden {
+	if b {
-		a := newAction(newNode, widget.Add)
+		newNode.direction = widget.Horizontal
-		if b {
+	} else {
-			a.Direction = widget.Horizontal
+		newNode.direction = widget.Vertical
-		} else {
-			a.Direction = widget.Vertical
-		}
-		sendAction(a)
 	}
+
+	// inform the toolkits
+	sendAction(newNode, widget.Add)
 	return newNode
 }
 
-func (parent *Node) NewHorizontalBox(name string) *Node {
+func (parent *Node) NewHorizontalBox(progname string) *Node {
-	newNode := parent.newNode(name, widget.Box)
+	newNode := parent.newNode(progname, widget.Box)
+	newNode.progname = progname
 
-	if ! newNode.hidden {
+	newNode.direction = widget.Horizontal
-		a := newAction(newNode, widget.Add)
+
-		a.Direction = widget.Horizontal
+	// inform the toolkits
-		sendAction(a)
+	sendAction(newNode, widget.Add)
-	}
 	return newNode
 }
 
-func (parent *Node) NewVerticalBox(name string) *Node {
+func (parent *Node) NewVerticalBox(progname string) *Node {
-	newNode := parent.newNode(name, widget.Box)
+	newNode := parent.newNode(progname, widget.Box)
+	newNode.progname = progname
 
-	if ! newNode.hidden {
+	newNode.direction = widget.Vertical
-		a := newAction(newNode, widget.Add)
+
-		a.Direction = widget.Vertical
+	// inform the toolkits
-		sendAction(a)
+	sendAction(newNode, widget.Add)
-	}
 	return newNode
 }

button.go

@@ -8,28 +8,7 @@ func (parent *Node) NewButton(name string, custom func()) *Node {
 	newNode.value = name
 	newNode.progname = name
 
-	if ! newNode.hidden {
+	// inform the toolkits
-		a := newAction(newNode, widget.Add)
+	sendAction(newNode, widget.Add)
-		sendAction(a)
-	}
 	return newNode
 }
-
-// find widget by number
-func (n *Node) FindId(i int) (*Node) {
-	if (n == nil) {
-		return nil
-	}
-
-	if (n.id == i) {
-		return n
-	}
-
-	for _, child := range n.children {
-		newN := child.FindId(i)
-		if (newN != nil) {
-			return newN
-		}
-	}
-	return nil
-}

checkbox.go

@@ -11,9 +11,7 @@ func (n *Node) NewCheckbox(name string) *Node {
 	newNode.value = name
 	newNode.progname = name
 
-	if ! newNode.hidden {
+	// inform the toolkits
-		a := newAction(newNode, widget.Add)
+	sendAction(newNode, widget.Add)
-		sendAction(a)
-	}
 	return newNode
 }

common.go

@@ -11,79 +11,91 @@ import (
 // functions for handling text related GUI elements
 
 func (n *Node) Show() *Node {
-	if ! n.hidden {
+	if ! n.Ready() { return n }
-		a := newAction(n, widget.Show)
+	if ! n.Hidden() { return n }
-		sendAction(a)
+
-	}
+	n.hidden = false
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.Show)
 	return n
 }
 
 func (n *Node) Hide() *Node {
-	if ! n.hidden {
+	if ! n.Ready() { return n }
-		a := newAction(n, widget.Hide)
+	if n.Hidden() { return n }
-		sendAction(a)
+
-	}
+	n.hidden = true
+	n.changed = true
+	// inform the toolkits
+	sendAction(n, widget.Hide)
 	return n
 }
 
+// enables a widget so the user can see it and work/click/etc on it
+// by default, widgets are enabled when they are created
 func (n *Node) Enable() *Node {
-	if ! n.hidden {
+	if ! n.Ready() { return n }
-		a := newAction(n, widget.Enable)
+	// if n.enabled { return n }
-		sendAction(a)
+
-	}
+	n.enabled = true
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.Enable)
 	return n
 }
 
+// disables a widget so the user can see it, but can not
+// interact or change it.
 func (n *Node) Disable() *Node {
-	if ! n.hidden {
+	if ! n.Ready() { return n }
-		a := newAction(n, widget.Disable)
+	// if ! n.enabled { return n }
-		sendAction(a)
+
-	}
+	n.enabled = false
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.Disable)
 	return n
 }
 
-func (n *Node) Add(str string) {
-	log.Log(GUI, "gui.Add() value =", str)
 
-	n.value = str
+// add a new text string to widgets that support
-
+// multiple string values
-	if ! n.hidden {
+// These must be unique. return false if the string already exists
-		a := newAction(n, widget.Add)
+func (n *Node) AddText(str string) bool {
-		sendAction(a)
+	if ! n.Ready() { return false }
-	}
-}
-
-func (n *Node) AddText(str string) {
 	log.Log(CHANGE, "AddText() value =", str)
 
 	n.value = str
+	// TODO: make sure these are unique
+	n.strings = append(n.strings, str)
 
-	if ! n.hidden {
+	// inform the toolkits
-		a := newAction(n, widget.AddText)
+	sendAction(n, widget.AddText)
-		sendAction(a)
+	return true
-	}
 }
 
-func (n *Node) SetNext(w int, h int) {
-	n.NextW = w
-	n.NextH = h
-	log.Info("SetNext() w,h =", n.NextW, n.NextH)
-}
 
+// appends text to the existing text
+// TODO: this is an experiement
 func (n *Node) AppendText(str string) {
+	if ! n.Ready() { return }
 	tmp := widget.GetString(n.value) + str
 	n.value = tmp
+	n.changed = true
 
-	if ! n.hidden {
+	// inform the toolkits
-		a := newAction(n, widget.SetText)
+	sendAction(n, widget.SetText)
-		sendAction(a)
-	}
 }
 
 // THESE TWO FUNCTIONS ARE TERRIBLY NAMED AND NEED TO BE FIXED
 // 5 seconds worth of ideas:
 // Value() ?
 // Progname() Reference() ?
+// 2024/01/13 the names are starting to grow on me and make it clearer to code against
 
 // get a string from the widget
 func (n *Node) GetText() string {
@@ -104,14 +116,177 @@ func (n *Node) GetBool() bool {
 }
 
 // should get the reference name used for programming and debugging
-// myButton = myGroup.NewButton("hit ball", nil).SetName("HIT")
+func (n *Node) SetProgName(s string) {
-// myButton.GetName() should return "HIT"
+	if ! n.Ready() { return }
-// n = Find("HIT") should return myButton
+
-func (n *Node) GetName() string {
+	if n.progname == s {
+		// don't do anything since nothing changed
+		return
+	}
+
+	n.changed = true
+	n.progname = s
+	return
+}
+
+/*
+	TODO: ensure these are unique and make a way to look them up
+	myButton = myGroup.NewButton("hit ball", nil).SetName("HIT")
+	myButton.GetName() should return "HIT"
+	n = Find("HIT") should return myButton
+*/
+func (n *Node) GetProgName() string {
 	if ! n.Ready() { return "" }
 	return n.progname
 }
 
+/*
+func commonCallback(n *Node) {
+	// TODO: make all of this common code to all the widgets
+	// This might be common everywhere finally (2023/03/01)
+	if (n.Custom == nil) {
+		log.Log(CHANGE, "Not Running n.Custom(n) == nil")
+	} else {
+		log.Log(CHANGE, "Running n.Custom(n)")
+		n.Custom()
+	}
+}
+*/
+
+func (n *Node) Margin() *Node {
+	if ! n.Ready() { return n }
+	if n.margin { return n }
+
+	n.margin = true
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.Margin)
+	return n
+}
+
+func (n *Node) Unmargin() *Node {
+	if ! n.Ready() { return n }
+	if ! n.margin { return n }
+
+	n.margin = false
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.Unmargin)
+	return n
+}
+
+func (n *Node) Pad() *Node {
+	if ! n.Ready() { return n }
+	if n.pad == true { return n } // nothing changed
+
+	n.pad = true
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.Pad)
+	return n
+}
+
+func (n *Node) Unpad() *Node {
+	if ! n.Ready() { return n }
+	if n.pad == false { return n } // nothing changed
+
+	n.pad = false
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.Unpad)
+	return n
+}
+
+func (n *Node) Expand() *Node {
+	if ! n.Ready() { return n }
+	if n.expand == true { return n } // nothing changed
+
+	n.expand = true
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.SetExpand)
+	return n
+}
+
+func (n *Node) SetExpand(b bool) *Node {
+	if ! n.Ready() { return n }
+	if n.expand == b { return n } // nothing changed
+
+	n.expand = b
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.SetExpand)
+	return n
+}
+
+// is the widget currently viewable?
+func (n *Node) Hidden() bool {
+	if ! n.Ready() { return false }
+	return n.hidden
+}
+
+func (n *Node) Ready() bool {
+	if n == nil {
+		log.Warn("Ready() got node == nil")
+		// TODO: figure out if you can identify the code trace
+		// to help find the root cause
+		return false
+	}
+	return true
+}
+
+//
+//
+// DEPRECATE / REDO / SORT OUT THIS STUFF
+//
+//
+
+// This should not really do anything. as per the docs, the "Standard()" way
+// should be the default way
+/*
+func (n *Node) Standard() *Node {
+	log.Warn("Standard() not implemented yet")
+	return n
+}
+
+func (n *Node) SetMargin() *Node {
+	log.Warn("DoMargin() not implemented yet")
+	return n
+}
+*/
+
+/*
+func (n *Node) Window(title string) *Node {
+	log.Warn("Window()", n)
+	return n.NewWindow(title)
+}
+*/
+
+/*
+func (n *Node) Add(str string) {
+	log.Log(GUI, "gui.Add() value =", str)
+
+	n.value = str
+
+	// inform the toolkits
+	sendAction(n, widget.Add)
+}
+*/
+
+/*
+func (n *Node) SetNext(w int, h int) {
+	n.NextW = w
+	n.NextH = h
+	log.Info("SetNext() w,h =", n.NextW, n.NextH)
+}
+*/
+
 /*
 // string handling examples that might be helpful for normalizeInt()
 isAlpha := regexp.MustCompile(`^[A-Za-z]+$`).MatchString
@@ -145,100 +320,3 @@ func normalizeInt(s string) string {
 	log.Log(GUI, "normalizeInt() s =", clean)
 	return clean
 }
-
-func commonCallback(n *Node) {
-	// TODO: make all of this common code to all the widgets
-	// This might be common everywhere finally (2023/03/01)
-	if (n.Custom == nil) {
-		log.Log(CHANGE, "Not Running n.Custom(n) == nil")
-	} else {
-		log.Log(CHANGE, "Running n.Custom(n)")
-		n.Custom()
-	}
-}
-
-func (n *Node) Margin() *Node {
-	n.margin = true
-	if ! n.hidden {
-		a := newAction(n, widget.Margin)
-		sendAction(a)
-	}
-	return n
-}
-
-func (n *Node) Unmargin() *Node {
-	n.margin = false
-	if ! n.hidden {
-		a := newAction(n, widget.Unmargin)
-		sendAction(a)
-	}
-	return n
-}
-
-func (n *Node) Pad() *Node {
-	n.pad = true
-	if ! n.hidden {
-		a := newAction(n, widget.Pad)
-		sendAction(a)
-	}
-	return n
-}
-
-func (n *Node) Unpad() *Node {
-	n.pad = false
-	if ! n.hidden {
-		a := newAction(n, widget.Unpad)
-		sendAction(a)
-	}
-	return n
-}
-
-func (n *Node) Expand() *Node {
-	n.expand = true
-	if ! n.hidden {
-		a := newAction(n, widget.Pad)
-		a.Expand = true
-		sendAction(a)
-	}
-	return n
-}
-
-// is this better?
-// yes, this is better. it allows Internationalization very easily
-//  me.window = myGui.New2().Window("DNS and IPv6 Control Panel").Standard()
-//  myFunnyWindow = myGui.NewWindow("Hello").Standard().SetText("Hola")
-
-/*
-func (n *Node) Window(title string) *Node {
-	log.Warn("Window()", n)
-	return n.NewWindow(title)
-}
-*/
-
-func (n *Node) ProgName() string {
-	if ! n.Ready() { return "" }
-	return n.progname
-}
-
-func (n *Node) Ready() bool {
-	if n == nil {
-		log.Warn("Ready() got node == nil")
-		// TODO: figure out if you can identify the code trace to help find the root cause
-		return false
-	}
-	return true
-}
-
-// This should not really do anything. as per the docs, the "Standard()" way
-// should be the default way
-/*
-func (n *Node) Standard() *Node {
-	log.Warn("Standard() not implemented yet")
-	return n
-}
-
-func (n *Node) SetMargin() *Node {
-	log.Warn("DoMargin() not implemented yet")
-	return n
-}
-*/

debug.go

@@ -38,10 +38,8 @@ func (n *Node) Dump() {
 	}
 	Indent(b, "NODE DUMP END")
 
-	a := new(widget.Action)
+	n.changed = true
-	a.ActionType = widget.Dump
+	sendAction(n, widget.Dump)
-	a.WidgetId = n.id
-	sendAction(a)
 }
 
 func Indent(b bool, a ...interface{}) {

dropdown.go

@@ -6,41 +6,38 @@ package gui
 // since it is the same. confusing names? maybe...
 
 import (
+	"go.wit.com/log"
 	"go.wit.com/gui/widget"
 )
 
 // add a new entry to the dropdown name
 func (n *Node) AddDropdownName(name string) {
+	if ! n.Ready() { return }
+	log.Warn("AddDropdownName() deprecated")
 	n.AddText(name)
 }
 
 // Set the dropdown menu to 'name'
 func (n *Node) SetDropdownName(name string) {
+	if ! n.Ready() { return }
+	log.Warn("SetDropdownName() deprecated")
 	n.SetText(name)
 }
 
-func (n *Node) NewDropdown(name string) *Node {
+func (n *Node) NewDropdown(progname string) *Node {
-	newNode := n.newNode(name, widget.Dropdown) 
+	newNode := n.newNode(progname, widget.Dropdown)
-	newNode.progname = name
+	newNode.progname = progname
-	newNode.value = name
-
-	if ! newNode.hidden {
-		a := newAction(newNode, widget.Add)
-		sendAction(a)
-	}
 
+	// inform the toolkits
+	sendAction(newNode, widget.Add)
 	return newNode
 }
 
-func (n *Node) NewCombobox(name string) *Node {
+func (n *Node) NewCombobox(progname string) *Node {
-	newNode := n.newNode(name, widget.Combobox) 
+	newNode := n.newNode(progname, widget.Combobox)
-	newNode.progname = name
+	newNode.progname = progname
-	newNode.value = name
-
-	if ! newNode.hidden {
-		a := newAction(newNode, widget.Add)
-		sendAction(a)
-	}
 
+	// inform the toolkits
+	sendAction(newNode, widget.Add)
 	return newNode
 }

grid.go

@@ -33,21 +33,20 @@ type GridOffset struct {
 	Y int
 }
 
-func (n *Node) NewGrid(name string, w int, h int) *Node {
+func (n *Node) NewGrid(progname string, w int, h int) *Node {
-	newNode := n.newNode(name, widget.Grid)
+	newNode := n.newNode(progname, widget.Grid)
+	newNode.progname = progname
 
 	newNode.W = w
 	newNode.H = h
 	newNode.NextW = 1
 	newNode.NextH = 1
 
-	if ! newNode.hidden {
-		a := newAction(newNode, widget.Add)
-		sendAction(a)
-	}
-
 	// by default, always pad grids
-	newNode.Pad()
+	newNode.pad = true
+
+	// inform the toolkits
+	sendAction(newNode, widget.Add)
 	return newNode
 }
 

group.go

@@ -13,14 +13,7 @@ func (parent *Node) NewGroup(name string) *Node {
 	newNode.progname = name
 	newNode.value = name
 
-	if ! newNode.hidden {
+	// inform the toolkits
-		a := newAction(newNode, widget.Add)
+	sendAction(newNode, widget.Add)
-		sendAction(a)
-	}
-
-	// by default, always pad groups
-	newNode.Pad()
-
-	// newBox := newNode.NewBox("defaultGroupBox", false)
 	return newNode
 }

image.go

@@ -1,6 +1,7 @@
 package gui
 
 import (
+	"go.wit.com/log"
 	"go.wit.com/gui/widget"
 )
 
@@ -8,9 +9,9 @@ func (parent *Node) NewImage(name string) *Node {
 	var newNode *Node
 	newNode = parent.newNode(name, widget.Image)
 
-	if ! newNode.hidden {
+	log.Warn("NewImage() not implemented. fix this")
-		a := newAction(newNode, widget.Add)
+
-		sendAction(a)
+	// inform the toolkits
-	}
+	sendAction(newNode, widget.Add)
 	return newNode
 }

label.go

@@ -9,9 +9,7 @@ func (parent *Node) NewLabel(text string) *Node {
 	newNode.value = text
 	newNode.progname = text
 
-	if ! newNode.hidden {
+	// inform the toolkits
-		a := newAction(newNode, widget.Add)
+	sendAction(newNode, widget.Add)
-		sendAction(a)
-	}
 	return newNode
 }

main.go

@@ -19,7 +19,7 @@ func init() {
 	log.Log(NOW, "init() has been run")
 
 	me.counter = 0
-	me.prefix = "wit"
+	// me.prefix = "wit"
 
 	// Populates the top of the binary tree
 	me.rootNode = addNode()
@@ -38,30 +38,50 @@ func init() {
 	go watchCallback()
 }
 
+// lookup the widget by the id sent from the toolkit
+func (n *Node) findId(i int) (*Node) {
+	if (n == nil) {
+		return nil
+	}
+
+	if (n.id == i) {
+		return n
+	}
+
+	for _, child := range n.children {
+		newN := child.findId(i)
+		if (newN != nil) {
+			return newN
+		}
+	}
+	return nil
+}
+
 func watchCallback() {
-	log.Info("watchCallback() START")
+	log.Info("guiChan() START")
 	for {
-		log.Info("watchCallback() restarted select for toolkit user events")
+		log.Info("guiChan() restarted")
 	    	select {
 		case a := <-me.guiChan:
 			if (a.ActionType == widget.UserQuit) {
-				log.Info("doUserEvent() User sent Quit()")
+				log.Warn("guiChan() User sent Quit()")
 				me.rootNode.doCustom()
 				log.Exit("wit/gui toolkit.UserQuit")
 				break
 			}
 			if (a.ActionType == widget.EnableDebug) {
-				log.Warn("doUserEvent() Enable Debugging Window")
+				log.Warn("guiChan() Enable Debugging Window")
-				log.Warn("doUserEvent() TODO: not implemented")
+				log.Warn("guiChan() TODO: not implemented")
 				// DebugWindow()
 				break
 			}
 
-			n := me.rootNode.FindId(a.WidgetId)
+			n := me.rootNode.findId(a.WidgetId)
 			if (n == nil) {
-				log.Warn("watchCallback() UNKNOWN widget id =", a.WidgetId, a.ProgName)
+				log.Warn("guiChan() UNKNOWN widget id")
+				log.Warn("id =", a.WidgetId, a.ProgName)
 			} else {
-				log.Info("watchCallback() FOUND widget id =", n.id, n.progname)
+				log.Verbose("guiChan() FOUND widget id =", n.id, n.progname)
 				n.doUserEvent(a)
 			}
 			// this maybe a good idea?

node.go

@@ -7,14 +7,26 @@ import (
 
 /*
 	generic function to create a new node on the binary tree
+
+	this is called each time you want a new widget
+	and it initializes basic default values
+
+	there isn't much to see here.
 */
 func (n *Node) newNode(title string, t widget.WidgetType) *Node {
 	var newN *Node
 
 	newN = addNode()
+	newN.progname = title
 	newN.value = title
 	newN.WidgetType = t
 
+	// set these defaults
+	newN.expand = true
+	newN.pad = true
+	newN.enabled = true
+	newN.changed = true
+
 	if n.WidgetType == widget.Grid {
 		n.gridIncrement()
 	}
@@ -28,7 +40,7 @@ func (n *Node) newNode(title string, t widget.WidgetType) *Node {
 }
 
 /*
-	raw create function for a new node struct
+	raw create function for a new node struct and increments the counter
 */
 func addNode() *Node {
 	n := new(Node)
@@ -40,10 +52,13 @@ func addNode() *Node {
 }
 
 func (n *Node) Parent() *Node {
+	if ! n.Ready() { return n }
 	return n.parent
 }
 
 func (n *Node) Delete(d *Node) {
+	if ! n.Ready() { return }
+
 	for i, child := range n.children {
 		log.Log(NODE, "\t", i, child.id, child.progname)
 		if (child.id == d.id) {

plugin.go

@@ -214,48 +214,6 @@ func initToolkit(name string, filename string) *aplug {
 	return newPlug
 }
 
-// 2024/01/11 finally moving to type any. simplify to just 'value'
-// 2023/05/09 pretty clean
-// 2023/04/06 Queue() is also being used and channels are being used.
-func newAction(n *Node, atype widget.ActionType) *widget.Action {
-	var a widget.Action
-	a.ActionType = atype
-	if (n == nil) {
-		return &a
-	}
-	a.WidgetId = n.id
-	a.ProgName = n.progname
-	a.Value = n.value
-
-	a.X = n.X
-	a.Y = n.Y
-
-	a.AtW = n.AtW
-	a.AtH = n.AtH
-
-	if (n.parent != nil) {
-		a.ParentId = n.parent.id
-	}
-	a.WidgetType = n.WidgetType
-	return &a
-}
-
-// sends the action/event to each toolkit via a golang plugin channel
-func sendAction(a *widget.Action) {
-	for _, aplug := range allPlugins {
-		log.Log(PLUG, "Action() aplug =", aplug.name, "Action type=", a.ActionType)
-		if (aplug.pluginChan == nil) {
-			log.Info("Action() retrieving the aplug.PluginChannel()", aplug.name)
-			aplug.pluginChan = aplug.PluginChannel()
-			log.Info("Action() retrieved", aplug.pluginChan)
-		}
-		log.Info("Action() SEND to pluginChan", aplug.name)
-		aplug.pluginChan <- *a
-		// added during debugging. might be a good idea in general for a tactile experience
-		log.Sleep(.02) // this delay makes it so SetText() works on initial widget creation
-	}
-}
-
 func (n *Node) InitEmbed(resFS embed.FS) *Node {
 	me.resFS = resFS
 	return n

setText.go

@@ -3,64 +3,55 @@ package gui
 // Common actions for widgets like 'Enable' or 'Hide'
 
 import (
+	"errors"
+
 	"go.wit.com/log"
 	"go.wit.com/gui/widget"
 )
 
 func (n *Node) SetText(text string) *Node {
 	if ! n.Ready() { return n }
+
+	if n.GetText() == text {
+		// nothing changed
+		return n
+	}
+	n.value = text
+	n.changed = true
 	log.Log(CHANGE, "SetText() value =", text)
 
-	n.value = text
+	// inform the toolkits
-
+	sendAction(n, widget.SetText)
-	if ! n.hidden {
-		a := newAction(n, widget.SetText)
-		a.Value = n.value
-		sendAction(a)
-	}
 	return n
 }
 
-/*
+func (n *Node) Set(val any) {
-func convertString(val any) string {
+	if ! n.Ready() { return }
+
 	switch v := val.(type) {
 	case bool:
-		n.B = val.(bool)
+		if widget.GetBool(n.value) == val.(bool) {
+			// nothing changed
+			return
+		}
 	case string:
-		n.label = val.(string)
+		if widget.GetString(n.value) == val.(string) {
-		n.S = val.(string)
+			// nothing changed
+			return
+		}
 	case int:
-		n.I = val.(int)
+		if widget.GetInt(n.value) == val.(int) {
+			// nothing changed
+			return
+		}
 	default:
 		log.Error(errors.New("Set() unknown type"), "v =", v)
 	}
-}
-*/
 
-
+	n.value = val
-func (n *Node) Set(val any) {
+	n.changed = true
 	log.Log(CHANGE, "Set() value =", val)
 
-	n.value = val
+	// inform the toolkits
-	/*
+	sendAction(n, widget.Set)
-	n.value = val
-
-	switch v := val.(type) {
-	case bool:
-		n.B = val.(bool)
-	case string:
-		n.label = val.(string)
-		n.S = val.(string)
-	case int:
-		n.I = val.(int)
-	default:
-		log.Error(errors.New("Set() unknown type"), "v =", v)
-	}
-	*/
-
-	if ! n.hidden {
-		a := newAction(n, widget.Set)
-		a.Value = n.value
-		sendAction(a)
-	}
 }

slider.go

@@ -5,21 +5,18 @@ import (
 	"go.wit.com/gui/widget"
 )
 
-func (parent *Node) NewSlider(name string, x int, y int) *Node {
+func (parent *Node) NewSlider(progname string, x int, y int) *Node {
-	newNode := parent.newNode(name, widget.Slider)
+	newNode := parent.newNode(progname, widget.Slider)
+	newNode.progname = progname
 
 	newNode.Custom = func() {
-		log.Log(GUI, "even newer clicker() name in NewSlider name =", name)
+		log.Log(GUI, "even newer clicker() name in NewSlider name =", progname)
 	}
 
 	newNode.X = x
 	newNode.Y = y
-	if ! newNode.hidden {
-		a := newAction(newNode, widget.Add)
-		a.X = x
-		a.Y = y
-		sendAction(a)
-	}
 
+	// inform the toolkits
+	sendAction(newNode, widget.Add)
 	return newNode
 }

spinner.go

@@ -5,19 +5,18 @@ import (
 	"go.wit.com/gui/widget"
 )
 
-func (parent *Node) NewSpinner(name string, x int, y int) *Node {
+func (parent *Node) NewSpinner(progname string, x int, y int) *Node {
-	newNode := parent.newNode(name, widget.Spinner)
+	newNode := parent.newNode(progname, widget.Spinner)
+	newNode.progname = progname
 
 	newNode.Custom = func() {
-		log.Info("default NewSpinner() change", name)
+		log.Info("default NewSpinner() change", progname)
 	}
 
 	newNode.X = x
 	newNode.Y = y
 
-	if ! newNode.hidden {
+	// inform the toolkits
-		a := newAction(newNode, widget.Add)
+	sendAction(newNode, widget.Add)
-		sendAction(a)
-	}
 	return newNode
 }

structs.go

@@ -27,14 +27,15 @@ var me guiConfig
 // almost all toolkits use integers so there doesn't
 // seem to be a good idea to use 'type any' here as it
 // just makes things more complicated for no good reason
-type Range struct {
+type RangeMovedToWidget struct {
 	Low int
 	High int
 }
 
-type List []string
+// type List []string
 
 type guiConfig struct {
+	// a toolkit requirement. never allow more than one per program
 	initOnce sync.Once
 
 	// This is the master node. The Binary Tree starts here
@@ -52,28 +53,69 @@ type guiConfig struct {
 	resFS	embed.FS
 
 	// used to beautify logging to Stdout
-	depth      int
+//	depth      int
-	prefix     string
+//	prefix     string
 }
 
-// The Node is a binary tree. This is how all GUI elements are stored
+/*
-// simply the name and the size of whatever GUI element exists
+	The Node is a binary tree. This is how all GUI elements are stored
+	simply the name and the size of whatever GUI element exists
+
+	value : most widgets need 1 value. this is it.
+		For a window -- the title. For a button -- the name
+
+	hidden : this means the widget is not displayed yet. In that
+		case, don't waste time trying to pass information to
+		the toolkits. This makes things efficient and fast if
+		the GUI does not have to display anything
+
+	Custom() : if the user does something like click on a button,
+		this function will be called. (this should probably
+		be renamed Callback()
+
+	progname : a short name to reference the widgets in the debugger
+		n.NewButton("click here to send it").SetProgName("SENT")
+
+	parent, children : the binary tree
+
+	pad, margin, expand : re-think these names and clarify
+
+*/
+
 type Node struct {
 	id	int // should be unique
-	hidden	bool // Sierpinski Carpet mode. It's there, but you can't see it.
+	hidden	bool // don't update the toolkits when it's hidden
-	pad	bool // the toolkit may use this. it's up to the toolkit
+	changed bool // do we need to inform the toolkit something changed?
-	margin	bool // the toolkit may use this. it's up to the toolkit
+	enabled bool // if false, then the the user can't click on it
-	expand	bool // the toolkit may use this. it's up to the toolkit
 
 	WidgetType	widget.WidgetType
 
-	// the current widget value.
+	// most widgets need one value, this is current alue
 	value	any
 
 	// this can programatically identify the widget
 	// The name must be unique
 	progname string  // a name useful for debugging
 
+	// for widgets that a user select from a list of strings
+	strings []string
+
+	// how to arrange widgets
+	direction widget.Orientation
+
+	// this function is run when there are mouse or keyboard events
+	Custom func()
+
+	parent	*Node
+	children []*Node
+
+
+	// RETHINK EVERYTHING BELOW HERE
+	pad	bool // the toolkit may use this. it's up to the toolkit
+	margin	bool // the toolkit may use this. it's up to the toolkit
+	expand	bool // the toolkit may use this. it's up to the toolkit
+
+
 	// used for Windows in toolkits measured in pixels
 	width  int
 	height int
@@ -95,11 +137,4 @@ type Node struct {
 	// if this widget is in a grid, this is the position of a widget
 	AtW	int
 	AtH	int
-
-
-	// this function is run when there are mouse or keyboard events
-	Custom func()
-
-	parent	*Node
-	children []*Node
 }

textbox.go

@@ -8,20 +8,22 @@ import (
 
 func (parent *Node) NewTextbox(name string) *Node {
 	newNode := parent.newNode(name, widget.Textbox)
+	newNode.value = name
+	newNode.progname = name
 
 	newNode.Custom = func() {
 		log.Log(GUI, "NewTextbox changed =", name)
 	}
 
-	if ! newNode.hidden {
+	// inform the toolkits
-		a := newAction(newNode, widget.Add)
+	sendAction(newNode, widget.Add)
-		sendAction(a)
-	}
 	return newNode
 }
 
 func (parent *Node) NewEntryLine(name string) *Node {
 	newNode := parent.newNode(name, widget.Textbox)
+	newNode.value = name
+	newNode.progname = name
 
 	newNode.X = 1
 
@@ -29,9 +31,7 @@ func (parent *Node) NewEntryLine(name string) *Node {
 		log.Log(GUI, "NewTextbox changed =", name)
 	}
 
-	if ! newNode.hidden {
+	// inform the toolkits
-		a := newAction(newNode, widget.Add)
+	sendAction(newNode, widget.Add)
-		sendAction(a)
-	}
 	return newNode
 }

window.go

@@ -18,10 +18,8 @@ func (parent *Node) NewWindow(title string) *Node {
 	newNode.progname = title
 	newNode.value = title
 
-	if ! newNode.hidden {
+	// inform the toolkits
-		a := newAction(newNode, widget.Add)
+	sendAction(newNode, widget.Add)
-		sendAction(a)
-	}
 	return newNode
 }
 
@@ -40,26 +38,51 @@ func (parent *Node) RawWindow(title string) *Node {
 
 // TODO: should do this recursively
 func (n *Node) UnDraw() *Node {
-	if ! n.hidden {
+	if ! n.Ready() { return n }
-		n.Hide()
+
-	}
 	n.hidden = true
+	n.changed = true
+
+	// inform the toolkits
+	sendAction(n, widget.Delete)
 	return n
 }
 
 // TODO: should do this recursively
 func (n *Node) Draw() *Node {
-	n.hidden = false
+	if ! n.Ready() { return n }
 
-	a := newAction(n, widget.Add)
+	n.hidden = false
-	sendAction(a)
+	n.changed= true
+
+	// inform the toolkits
+	sendAction(n, widget.Add)
 	return n
 }
 
 // if the toolkit supports a gui with pixels, it might honor this. no promises
 // consider this a 'recommendation' or developer 'preference' to the toolkit
+/*
 func (n *Node) PixelSize(w, h int) *Node {
 	n.width = w
 	n.height = w
 	return n
 }
+*/
+
+func (n *Node) TestDraw() {
+	if (n == nil) {
+		return
+	}
+
+	// enable and
+	n.hidden = false
+	n.changed = true
+	log.Warn("TestDraw() sending widget.Add", n.id, n.WidgetType, n.progname)
+	sendAction(n, widget.Add)
+
+	for _, child := range n.children {
+		child.TestDraw()
+	}
+	return
+}