beginning of work on fullscreen page

ui/browsing/fullscreenpage.go

@@ -0,0 +1,78 @@
+package browsing
+
+import (
+	"github.com/dweymouth/supersonic/backend"
+	"github.com/dweymouth/supersonic/backend/mediaprovider"
+	"github.com/dweymouth/supersonic/sharedutil"
+	"github.com/dweymouth/supersonic/ui/controller"
+	"github.com/dweymouth/supersonic/ui/util"
+	"github.com/dweymouth/supersonic/ui/widgets"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/widget"
+)
+
+type FullscreenPage struct {
+	widget.BaseWidget
+
+	fullscreenPageState
+
+	queue []*mediaprovider.Track
+
+	card         *widgets.LargeNowPlayingCard
+	nowPlayingID string
+}
+
+type fullscreenPageState struct {
+	contr   *controller.Controller
+	pool    *util.WidgetPool
+	pm      *backend.PlaybackManager
+	canRate bool
+}
+
+func NewFullscreenPage(
+	contr *controller.Controller,
+	pool *util.WidgetPool,
+	pm *backend.PlaybackManager,
+	canRate bool,
+) *FullscreenPage {
+	a := &FullscreenPage{fullscreenPageState: fullscreenPageState{
+		contr: contr, pool: pool, pm: pm, canRate: canRate,
+	}}
+	a.ExtendBaseWidget(a)
+
+	a.card = widgets.NewLargeNowPlayingCard()
+
+	a.Reload()
+	return a
+}
+
+func (a *FullscreenPage) CreateRenderer() fyne.WidgetRenderer {
+	container := container.NewPadded()
+	return widget.NewSimpleRenderer(container)
+}
+
+func (a *FullscreenPage) Save() SavedPage {
+	nps := a.fullscreenPageState
+	return &nps
+}
+
+func (a *FullscreenPage) Route() controller.Route {
+	return controller.NowPlayingRoute("")
+}
+
+var _ CanShowNowPlaying = (*FullscreenPage)(nil)
+
+func (a *FullscreenPage) OnSongChange(song, lastScrobbledIfAny *mediaprovider.Track) {
+	a.nowPlayingID = sharedutil.TrackIDOrEmptyStr(song)
+	a.card.Update(song.Name, song.ArtistNames, song.ArtistIDs, song.Album)
+}
+
+func (a *FullscreenPage) Reload() {
+	a.queue = a.pm.GetPlayQueue()
+}
+
+func (s *fullscreenPageState) Restore() Page {
+	return NewFullscreenPage(s.contr, s.pool, s.pm, s.canRate)
+}