multiple screen structure

cmd/android-app/main.go

@@ -9,7 +9,7 @@ import (
 
 func main() {
 	fyneApp := app.NewWithID("nl.ewintr.gte")
-	w := fyneApp.NewWindow("gte - getting things email")
+	fyneWindow := fyneApp.NewWindow("gte - getting things email")
 	conf := component.NewConfigurationFromPreferences(fyneApp.Preferences())
 	conf.Load()
 	logger := component.NewLogger()
@@ -20,9 +20,9 @@ func main() {
 	}
 
 	r := runner.NewRunner(conf, tasksURI, logger)
-	tabs := r.Init()
+	rootContainer := r.Init()
-	w.SetContent(tabs)
+	fyneWindow.SetContent(rootContainer)
 	go r.Run()
 
-	w.ShowAndRun()
+	fyneWindow.ShowAndRun()
 }

cmd/android-app/runner/runner.go

@@ -11,7 +11,6 @@ import (
 	"ewintr.nl/gte/cmd/android-app/screen"
 	"ewintr.nl/gte/internal/task"
 	"fyne.io/fyne/v2"
-	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/storage"
 )
 
@@ -23,11 +22,11 @@ type Runner struct {
 	conf       *component.Configuration
 	logger     *component.Logger
 	tasks      *component.Tasks
-	screens    []screen.Screen
 	status     string
 	requests   chan interface{}
 	refresh    chan bool
 	fileURI    fyne.URI
+	screenSet  *screen.ScreenSet
 }
 
 func NewRunner(conf *component.Configuration, fileURI fyne.URI, logger *component.Logger) *Runner {
@@ -42,30 +41,20 @@ func NewRunner(conf *component.Configuration, fileURI fyne.URI, logger *componen
 }
 
 func (r *Runner) Init() fyne.CanvasObject {
-
-	logScreen := screen.NewLog()
-	logTab := container.NewTabItem("log", logScreen.Content())
-	r.screens = append(r.screens, logScreen)
-
-	configScreen := screen.NewConfig(r.requests)
-	configTab := container.NewTabItem("config", configScreen.Content())
-	r.screens = append(r.screens, configScreen)
-
 	stored, err := load(r.fileURI)
 	if err != nil {
 		r.logger.Log(err.Error())
 	}
 	r.logger.Log(fmt.Sprintf("loaded %d tasks from file", len(stored)))
 	r.tasks = component.NewTasks(r.conf, stored)
-	taskScreen := screen.NewTasks(r.requests)
-	taskTab := container.NewTabItem("tasks", taskScreen.Content())
-	r.screens = append(r.screens, taskScreen)
-	tabs := container.NewAppTabs(taskTab, configTab, logTab)
 
-	return tabs
+	r.screenSet = screen.NewScreenSet(r.requests)
+
+	return r.screenSet.Content()
 }
 
 func (r *Runner) Run() {
+	go r.screenSet.Run()
 	go r.refresher()
 	go r.processRequest()
 	r.backgroundSync()
@@ -80,7 +69,7 @@ func (r *Runner) processRequest() {
 			for k, val := range v.Fields {
 				r.conf.Set(k, val)
 			}
-			r.status = "ready"
+			r.status = "config saved"
 			r.logger.Log("config saved")
 		case screen.SyncTasksRequest:
 			r.status = "syncing..."
@@ -92,7 +81,7 @@ func (r *Runner) processRequest() {
 			if countDisp > 0 || countFetch > 0 {
 				r.logger.Log(fmt.Sprintf("task sync: dispatched: %d, fetched: %d", countDisp, countFetch))
 			}
-			r.status = "ready"
+			r.status = "synced"
 			all, err := r.tasks.All()
 			if err != nil {
 				r.logger.Log(err.Error())
@@ -103,10 +92,13 @@ func (r *Runner) processRequest() {
 				break
 			}
 		case screen.MarkTaskDoneRequest:
+			r.status = "marking done..."
+			r.refresh <- true
 			if err := r.tasks.MarkDone(v.ID); err != nil {
 				r.logger.Log(err.Error())
 			}
 			r.logger.Log(fmt.Sprintf("marked task %q done", v.ID))
+			r.status = "marked done"
 		default:
 			r.logger.Log("request unknown")
 		}
@@ -135,9 +127,7 @@ func (r *Runner) refresher() {
 			Logs:   r.logger.Lines(),
 		}
 
-		for _, s := range r.screens {
+		r.screenSet.Refresh(state)
-			s.Refresh(state)
-		}
 	}
 }
 

cmd/android-app/screen/config.go

@@ -4,6 +4,7 @@ import (
 	"sync"
 
 	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/data/binding"
 	"fyne.io/fyne/v2/widget"
 )
@@ -45,11 +46,13 @@ func (ff *FormField) GetValue() string {
 }
 
 type Config struct {
-	fields []*FormField
+	fields   []*FormField
-	out    chan interface{}
+	commands chan interface{}
+	show     chan string
+	root     *fyne.Container
 }
 
-func NewConfig(out chan interface{}) *Config {
+func NewConfig(commands chan interface{}, show chan string) *Config {
 	fields := []*FormField{}
 	for _, f := range [][2]string{
 		{"ConfigIMAPURL", "imap url"},
@@ -68,10 +71,14 @@ func NewConfig(out chan interface{}) *Config {
 		fields = append(fields, NewFormField(f[0], f[1]))
 	}
 
-	return &Config{
+	config := &Config{
-		fields: fields,
+		fields:   fields,
-		out:    out,
+		commands: commands,
+		show:     show,
 	}
+	config.Init()
+
+	return config
 }
 
 func (cf *Config) Save() {
@@ -81,7 +88,8 @@ func (cf *Config) Save() {
 	for _, f := range cf.fields {
 		req.Fields[f.Key] = f.GetValue()
 	}
-	cf.out <- req
+	cf.commands <- req
+	cf.show <- "tasks"
 }
 
 func (cf *Config) Refresh(state State) {
@@ -92,7 +100,7 @@ func (cf *Config) Refresh(state State) {
 	}
 }
 
-func (cf *Config) Content() fyne.CanvasObject {
+func (cf *Config) Init() {
 	configForm := widget.NewForm()
 	for _, f := range cf.fields {
 		w := widget.NewEntry()
@@ -104,5 +112,23 @@ func (cf *Config) Content() fyne.CanvasObject {
 	configForm.OnSubmit = cf.Save
 	configForm.Enable()
 
-	return configForm
+	cf.root = container.NewBorder(
+		nil,
+		nil,
+		nil,
+		nil,
+		configForm,
+	)
+}
+
+func (cf *Config) Content() *fyne.Container {
+	return cf.root
+}
+
+func (cf *Config) Hide() {
+	cf.root.Hide()
+}
+
+func (cf *Config) Show() {
+	cf.root.Show()
 }

cmd/android-app/screen/log.go

@@ -2,25 +2,30 @@ package screen
 
 import (
 	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/data/binding"
 	"fyne.io/fyne/v2/widget"
 )
 
 type Log struct {
 	lines binding.StringList
+	root  *fyne.Container
 }
 
 func NewLog() *Log {
-	return &Log{
+	logs := &Log{
 		lines: binding.NewStringList(),
 	}
+	logs.Init()
+
+	return logs
 }
 
 func (l *Log) Refresh(state State) {
 	l.lines.Set(state.Logs)
 }
 
-func (l *Log) Content() fyne.CanvasObject {
+func (l *Log) Init() {
 	list := widget.NewListWithData(
 		l.lines,
 		func() fyne.CanvasObject {
@@ -30,5 +35,23 @@ func (l *Log) Content() fyne.CanvasObject {
 			o.(*widget.Label).Bind(i.(binding.String))
 		},
 	)
-	return list
+	l.root = container.NewBorder(
+		nil,
+		nil,
+		nil,
+		nil,
+		list,
+	)
+}
+
+func (l *Log) Content() *fyne.Container {
+	return l.root
+}
+
+func (l *Log) Hide() {
+	l.root.Hide()
+}
+
+func (l *Log) Show() {
+	l.root.Show()
 }

cmd/android-app/screen/screen.go

@@ -1,6 +1,13 @@
 package screen
 
-import "fyne.io/fyne/v2"
+import (
+	"fmt"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/data/binding"
+	"fyne.io/fyne/v2/widget"
+)
 
 type Task struct {
 	ID     string
@@ -8,13 +15,92 @@ type Task struct {
 }
 
 type State struct {
-	Status string
+	Status        string
-	Tasks  []Task
+	CurrentScreen string
-	Config map[string]string
+	Tasks         []Task
-	Logs   []string
+	Config        map[string]string
+	Logs          []string
 }
 
 type Screen interface {
-	Content() fyne.CanvasObject
+	Content() *fyne.Container
 	Refresh(state State)
+	Hide()
+	Show()
+}
+
+type ScreenSet struct {
+	current string
+	show    chan string
+	status  binding.String
+	menu    *fyne.Container
+	screens map[string]Screen
+	root    *fyne.Container
+}
+
+func NewScreenSet(requests chan interface{}) *ScreenSet {
+	status := binding.NewString()
+	show := make(chan string)
+
+	tasksButton := widget.NewButton("tasks", func() {
+		show <- "tasks"
+	})
+	configButton := widget.NewButton("config", func() {
+		show <- "config"
+	})
+	logsButton := widget.NewButton("logs", func() {
+		show <- "logs"
+	})
+	statusLabel := widget.NewLabel("> init...")
+	statusLabel.Bind(status)
+	statusLabel.TextStyle.Italic = true
+	menu := container.NewHBox(tasksButton, configButton, logsButton, statusLabel)
+
+	screens := map[string]Screen{
+		"tasks":  NewTasks(requests, show),
+		"logs":   NewLog(),
+		"config": NewConfig(requests, show),
+	}
+
+	cs := []fyne.CanvasObject{}
+	for _, s := range screens {
+		s.Hide()
+		cs = append(cs, s.Content())
+	}
+	screens["tasks"].Show()
+
+	root := container.NewBorder(menu, nil, nil, nil, cs...)
+
+	return &ScreenSet{
+		status:  status,
+		current: "tasks",
+		show:    show,
+		screens: screens,
+		root:    root,
+	}
+}
+
+func (ss *ScreenSet) Run() {
+	for s := range ss.show {
+		if s != ss.current {
+			ss.screens[ss.current].Hide()
+			ss.screens[s].Show()
+			ss.current = s
+
+			ss.root.Refresh()
+		}
+	}
+}
+
+func (ss *ScreenSet) Refresh(state State) {
+	ss.status.Set(fmt.Sprintf("> %s", state.Status))
+	for _, s := range ss.screens {
+		s.Refresh(state)
+	}
+
+	ss.root.Refresh()
+}
+
+func (ss *ScreenSet) Content() *fyne.Container {
+	return ss.root
 }

cmd/android-app/screen/tasks.go

@@ -1,7 +1,6 @@
 package screen
 
 import (
-	"fmt"
 	"sort"
 
 	"fyne.io/fyne/v2"
@@ -17,25 +16,28 @@ type MarkTaskDoneRequest struct {
 }
 
 type Tasks struct {
-	status       binding.String
 	tasks        []Task
 	taskLabels   binding.StringList
 	selectedTask string
 	list         *widget.List
-	out          chan interface{}
+	commands     chan interface{}
+	show         chan string
+	root         *fyne.Container
 }
 
-func NewTasks(out chan interface{}) *Tasks {
+func NewTasks(commands chan interface{}, show chan string) *Tasks {
-	return &Tasks{
+	tasks := &Tasks{
-		status:     binding.NewString(),
 		tasks:      []Task{},
 		taskLabels: binding.NewStringList(),
-		out:        out,
+		commands:   commands,
+		show:       show,
 	}
+	tasks.Init()
+
+	return tasks
 }
 
 func (t *Tasks) Refresh(state State) {
-	t.status.Set(fmt.Sprintf("> %s", state.Status))
 	t.tasks = state.Tasks
 	sort.Slice(t.tasks, func(i, j int) bool {
 		return t.tasks[i].Action < t.tasks[j].Action
@@ -50,10 +52,7 @@ func (t *Tasks) Refresh(state State) {
 	}
 }
 
-func (t *Tasks) Content() fyne.CanvasObject {
+func (t *Tasks) Init() {
-	statusLabel := widget.NewLabel("> init...")
-	statusLabel.Bind(t.status)
-	statusLabel.TextStyle.Italic = true
 	doneButton := widget.NewButton("done", func() {
 		t.markDone()
 	})
@@ -68,8 +67,8 @@ func (t *Tasks) Content() fyne.CanvasObject {
 	)
 	t.list.OnSelected = t.selectItem
 
-	return container.NewBorder(
+	t.root = container.NewBorder(
-		container.NewHBox(statusLabel),
+		nil,
 		doneButton,
 		nil,
 		nil,
@@ -77,6 +76,18 @@ func (t *Tasks) Content() fyne.CanvasObject {
 	)
 }
 
+func (t *Tasks) Content() *fyne.Container {
+	return t.root
+}
+
+func (t *Tasks) Hide() {
+	t.root.Hide()
+}
+
+func (t *Tasks) Show() {
+	t.root.Show()
+}
+
 func (t *Tasks) selectItem(lid widget.ListItemID) {
 	id := int(lid)
 	if id < 0 || id >= len(t.tasks) {
@@ -90,7 +101,7 @@ func (t *Tasks) markDone() {
 	if t.selectedTask == "" {
 		return
 	}
-	t.out <- MarkTaskDoneRequest{
+	t.commands <- MarkTaskDoneRequest{
 		ID: t.selectedTask,
 	}
 	t.selectedTask = ""