add history and navigation controls

ui/browsingpane.go

@@ -8,6 +8,7 @@ import (
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/theme"
 	"fyne.io/fyne/v2/widget"
 )
 
@@ -28,11 +29,17 @@ type BrowsingPane struct {
 
 	app *backend.App
 
+	curPage Page
+
+	forward    *widget.Button
+	back       *widget.Button
+	history    []Page
+	historyIdx int
+
 	searchBar         *widgets.SearchEntry
 	pendingSearchLock sync.Mutex
 	pendingSearch     bool
 	searchGoroutine   bool
-	curPage           Page
 
 	container *fyne.Container
 }
@@ -46,14 +53,21 @@ func NewBrowsingPane(app *backend.App) *BrowsingPane {
 	b.ExtendBaseWidget(b)
 	b.searchBar = widgets.NewSearchEntry()
 	b.searchBar.OnTextChanged = b.onSearchTextChanged
+	b.back = widget.NewButtonWithIcon("", theme.NavigateBackIcon(), b.GoBack)
+	b.forward = widget.NewButtonWithIcon("", theme.NavigateNextIcon(), b.GoForward)
 	b.curPage = &blankPage{}
 	b.container = container.NewBorder(
-		container.NewHBox(widgets.NewHSpace(15), b.searchBar),
+		container.NewHBox(b.back, b.forward, b.searchBar),
 		nil, nil, nil, b.curPage)
 	return b
 }
 
 func (b *BrowsingPane) SetPage(p Page) {
+	b.addPageToHistory(p)
+	b.doSetPage(p)
+}
+
+func (b *BrowsingPane) doSetPage(p Page) {
 	b.curPage = p
 	if pa, ok := p.(CanPlayAlbum); ok {
 		pa.SetPlayAlbumCallback(func(albumID string) {
@@ -66,6 +80,26 @@ func (b *BrowsingPane) SetPage(p Page) {
 	b.Refresh()
 }
 
+func (b *BrowsingPane) addPageToHistory(p Page) {
+	b.history = b.history[:b.historyIdx]
+	b.history = append(b.history, p)
+	b.historyIdx++
+}
+
+func (b *BrowsingPane) GoBack() {
+	if b.historyIdx > 1 {
+		b.historyIdx -= 1
+		b.doSetPage(b.history[b.historyIdx-1])
+	}
+}
+
+func (b *BrowsingPane) GoForward() {
+	if b.historyIdx < len(b.history) {
+		b.historyIdx++
+		b.doSetPage(b.history[b.historyIdx-1])
+	}
+}
+
 func (b *BrowsingPane) onSearchTextChanged(text string) {
 	if text == "" {
 		b.sendSearch("")

ui/mainwindow.go

@@ -40,7 +40,7 @@ func NewMainWindow(fyneApp fyne.App, appName string, app *backend.App) MainWindo
 		m.Window.SetTitle(song.Title)
 	})
 	app.ServerManager.OnServerConnected(func() {
-		m.Router.OpenRoute(AlbumsRoute(backend.AlbumSortFrequentlyPlayed))
+		m.Router.OpenRoute(AlbumsRoute(backend.AlbumSortRecentlyAdded))
 	})
 	return m
 }