ui refactoring (create controller pkg) + beginning of add to playlist

ui/browsing/albumpage.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log"
 	"supersonic/backend"
+	"supersonic/ui/controller"
 	"supersonic/ui/layouts"
 	"supersonic/ui/util"
 	"supersonic/ui/widgets"
@@ -35,7 +36,7 @@ type albumPageState struct {
 	pm      *backend.PlaybackManager
 	im      *backend.ImageManager
 	sm      *backend.ServerManager
-	popUpProvider util.PopUpProvider
+	contr   *controller.Controller
 	nav     func(Route)
 }
 
@@ -45,7 +46,7 @@ func NewAlbumPage(
 	pm *backend.PlaybackManager,
 	lm *backend.LibraryManager,
 	im *backend.ImageManager,
-	popUpProvider util.PopUpProvider,
+	contr *controller.Controller,
 	nav func(Route),
 ) *AlbumPage {
 	a := &AlbumPage{
@@ -56,7 +57,7 @@ func NewAlbumPage(
 			lm:      lm,
 			im:      im,
 			nav:     nav,
-			popUpProvider: popUpProvider,
+			contr:   contr,
 		},
 	}
 	a.ExtendBaseWidget(a)
@@ -241,7 +242,7 @@ func (a *AlbumPageHeader) showPopUpCover() {
 		log.Printf("error getting full size album cover: %s", err.Error())
 		return
 	}
-	util.ShowPopUpImage(cover, a.page.popUpProvider)
+	a.page.contr.ShowPopUpImage(cover)
 }
 
 func formatMiscLabelStr(a *subsonic.AlbumID3) string {
@@ -249,5 +250,5 @@ func formatMiscLabelStr(a *subsonic.AlbumID3) string {
 }
 
 func (s *albumPageState) Restore() Page {
-	return NewAlbumPage(s.albumID, s.sm, s.pm, s.lm, s.im, s.popUpProvider, s.nav)
+	return NewAlbumPage(s.albumID, s.sm, s.pm, s.lm, s.im, s.contr, s.nav)
 }

ui/browsing/artistpage.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 	"supersonic/backend"
 	"supersonic/res"
+	"supersonic/ui/controller"
 	"supersonic/ui/layouts"
 	"supersonic/ui/util"
 	"supersonic/ui/widgets"
@@ -26,7 +27,7 @@ type artistPageState struct {
 	sm       *backend.ServerManager
 	im       *backend.ImageManager
 	nav      func(Route)
-	popUpProvider util.PopUpProvider
+	contr    *controller.Controller
 }
 
 type ArtistPage struct {
@@ -40,13 +41,13 @@ type ArtistPage struct {
 	OnPlayAlbum func(string, int)
 }
 
-func NewArtistPage(artistID string, sm *backend.ServerManager, im *backend.ImageManager, popUp util.PopUpProvider, nav func(Route)) *ArtistPage {
+func NewArtistPage(artistID string, sm *backend.ServerManager, im *backend.ImageManager, contr *controller.Controller, nav func(Route)) *ArtistPage {
 	a := &ArtistPage{artistPageState: artistPageState{
 		artistID: artistID,
 		sm:       sm,
 		im:       im,
 		nav:      nav,
-		popUpProvider: popUp,
+		contr:    contr,
 	}}
 	a.ExtendBaseWidget(a)
 	a.header = NewArtistPageHeader(a, nav)
@@ -111,7 +112,7 @@ func (a *ArtistPage) CreateRenderer() fyne.WidgetRenderer {
 }
 
 func (s *artistPageState) Restore() Page {
-	return NewArtistPage(s.artistID, s.sm, s.im, s.popUpProvider, s.nav)
+	return NewArtistPage(s.artistID, s.sm, s.im, s.contr, s.nav)
 }
 
 type ArtistPageHeader struct {
@@ -190,7 +191,7 @@ func (a *ArtistPageHeader) UpdateInfo(info *subsonic.ArtistInfo2) {
 				return
 			}
 			a.artistImage.OnTapped = func() {
-				util.ShowPopUpImage(im, a.artistPage.popUpProvider)
+				a.artistPage.contr.ShowPopUpImage(im)
 			}
 			a.artistImage.SetImage(im, true /*tappable*/)
 		}

ui/browsing/router.go

@@ -2,10 +2,8 @@ package browsing
 
 import (
 	"supersonic/backend"
+	"supersonic/ui/controller"
 	"supersonic/ui/util"
-
-	"fyne.io/fyne/v2"
-	"fyne.io/fyne/v2/widget"
 )
 
 type PageName int
@@ -69,42 +67,29 @@ type NavigationHandler interface {
 
 type Router struct {
 	App        *backend.App
-	MainWindow fyne.Window
+	Controller *controller.Controller
 	Nav        NavigationHandler
 
 	pop util.PopUpProvider
 }
 
-func NewRouter(app *backend.App, mainWindow fyne.Window, nav NavigationHandler) Router {
+func NewRouter(app *backend.App, controller *controller.Controller, nav NavigationHandler) Router {
 	r := Router{
 		App:        app,
-		MainWindow: mainWindow,
+		Controller: controller,
 		Nav:        nav,
 	}
-	r.pop = &popUpProvider{window: r.MainWindow}
 	return r
 }
 
-type popUpProvider struct {
-	window fyne.Window
-}
-
-func (p *popUpProvider) CreatePopUp(obj fyne.CanvasObject) *widget.PopUp {
-	return widget.NewPopUp(obj, p.window.Canvas())
-}
-
-func (p *popUpProvider) WindowSize() fyne.Size {
-	return p.window.Canvas().Size()
-}
-
 func (r Router) CreatePage(rte Route) Page {
 	switch rte.Page {
 	case Album:
-		return NewAlbumPage(rte.Arg, r.App.ServerManager, r.App.PlaybackManager, r.App.LibraryManager, r.App.ImageManager, r.pop, r.OpenRoute)
+		return NewAlbumPage(rte.Arg, r.App.ServerManager, r.App.PlaybackManager, r.App.LibraryManager, r.App.ImageManager, r.Controller, r.OpenRoute)
 	case Albums:
 		return NewAlbumsPage("Albums", rte.Arg, r.App.LibraryManager, r.App.ImageManager, r.OpenRoute)
 	case Artist:
-		return NewArtistPage(rte.Arg, r.App.ServerManager, r.App.ImageManager, r.pop, r.OpenRoute)
+		return NewArtistPage(rte.Arg, r.App.ServerManager, r.App.ImageManager, r.Controller, r.OpenRoute)
 	case Artists:
 		return NewArtistsGenresPage(false, r.App.ServerManager, r.OpenRoute)
 	case Favorites:

ui/controller/controller.go

@@ -0,0 +1,64 @@
+package controller
+
+import (
+	"image"
+	"log"
+	"supersonic/backend"
+	"supersonic/ui/dialogs"
+	"supersonic/ui/util"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/canvas"
+	"fyne.io/fyne/v2/widget"
+	"github.com/dweymouth/go-subsonic"
+)
+
+type Controller struct {
+	MainWindow fyne.Window
+	App        *backend.App
+}
+
+func (m *Controller) ShowPopUpImage(img image.Image) {
+	im := canvas.NewImageFromImage(img)
+	im.FillMode = canvas.ImageFillContain
+	pop := widget.NewPopUp(im, m.MainWindow.Canvas())
+	s := m.MainWindow.Canvas().Size()
+	var popS fyne.Size
+	if asp := util.ImageAspect(img); s.Width/s.Height > asp {
+		// window height is limiting factor
+		h := s.Height * 0.8
+		popS = fyne.NewSize(h*asp, h)
+	} else {
+		w := s.Width * 0.8
+		popS = fyne.NewSize(w, w*(1/asp))
+	}
+	pop.Resize(popS)
+	pop.ShowAtPosition(fyne.NewPos(
+		(s.Width-popS.Width)/2,
+		(s.Height-popS.Height)/2,
+	))
+}
+
+// Show dialog to prompt for playlist.
+// Depending on the results of that dialog, potentially create a new playlist
+// Add tracks to the user-specified playlist
+func (m *Controller) DoAddTracksToPlaylistWorkflow(tracks []*subsonic.Child) {
+	pls, err := m.App.LibraryManager.GetUserOwnedPlaylists()
+	if err != nil {
+		// TODO: surface this error to user
+		log.Printf("error getting user-owned playlists: %s", err.Error())
+		return
+	}
+	plNames := make([]string, 0, len(pls))
+	for _, pl := range pls {
+		plNames = append(plNames, pl.Name)
+	}
+
+	dlg := dialogs.NewAddToPlaylistDialog("Add to Playlist", plNames)
+	pop := widget.NewModalPopUp(dlg, m.MainWindow.Canvas())
+	dlg.OnCanceled = pop.Hide
+	dlg.OnSubmit = func(playlistChoice int, newPlaylistName string) {
+		pop.Hide()
+		// call server to add tracks to playlist
+	}
+}

ui/mainwindow.go

@@ -4,6 +4,7 @@ import (
 	"supersonic/backend"
 	"supersonic/res"
 	"supersonic/ui/browsing"
+	"supersonic/ui/controller"
 	"supersonic/ui/os"
 	"supersonic/ui/widgets"
 
@@ -26,6 +27,7 @@ type MainWindow struct {
 
 	App          *backend.App
 	Router       browsing.Router
+	Controller   *controller.Controller
 	BrowsingPane *browsing.BrowsingPane
 	BottomPanel  *BottomPanel
 
@@ -43,7 +45,11 @@ func NewMainWindow(fyneApp fyne.App, appName string, app *backend.App, size fyne
 		BrowsingPane: browsing.NewBrowsingPane(app),
 	}
 
-	m.Router = browsing.NewRouter(app, m.Window, m.BrowsingPane)
+	m.Controller = &controller.Controller{
+		MainWindow: m.Window,
+		App:        app,
+	}
+	m.Router = browsing.NewRouter(app, m.Controller, m.BrowsingPane)
 	m.BottomPanel = NewBottomPanel(app.Player, m.Router.OpenRoute)
 	m.BottomPanel.SetPlaybackManager(app.PlaybackManager)
 	m.BottomPanel.ImageManager = app.ImageManager

ui/util/util.go

@@ -7,7 +7,6 @@ import (
 	"strings"
 
 	"fyne.io/fyne/v2"
-	"fyne.io/fyne/v2/canvas"
 	"fyne.io/fyne/v2/widget"
 	"golang.org/x/net/html"
 )
@@ -33,27 +32,6 @@ type PopUpProvider interface {
 	WindowSize() fyne.Size
 }
 
-func ShowPopUpImage(img image.Image, popUpProvider PopUpProvider) {
-	im := canvas.NewImageFromImage(img)
-	im.FillMode = canvas.ImageFillContain
-	pop := popUpProvider.CreatePopUp(im)
-	s := popUpProvider.WindowSize()
-	var popS fyne.Size
-	if asp := ImageAspect(img); s.Width/s.Height > asp {
-		// window height is limiting factor
-		h := s.Height * 0.8
-		popS = fyne.NewSize(h*asp, h)
-	} else {
-		w := s.Width * 0.8
-		popS = fyne.NewSize(w, w*(1/asp))
-	}
-	pop.Resize(popS)
-	pop.ShowAtPosition(fyne.NewPos(
-		(s.Width-popS.Width)/2,
-		(s.Height-popS.Height)/2,
-	))
-}
-
 func RichTextSegsFromHTMLString(s string) []widget.RichTextSegment {
 	tokr := html.NewTokenizer(strings.NewReader(s))
 	var segs []widget.RichTextSegment