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albumfilterbutton.go
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albumfilterbutton.go
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package widgets
import (
"fmt"
"sort"
"strconv"
"strings"
"sync"
"time"
"unicode"
"fyne.io/fyne/v2"
"fyne.io/fyne/v2/container"
"fyne.io/fyne/v2/layout"
"fyne.io/fyne/v2/theme"
"fyne.io/fyne/v2/widget"
"github.com/dweymouth/supersonic/backend/mediaprovider"
"github.com/dweymouth/supersonic/sharedutil"
"github.com/dweymouth/supersonic/ui/layouts"
myTheme "github.com/dweymouth/supersonic/ui/theme"
"github.com/dweymouth/supersonic/ui/util"
)
type AlbumFilterButton struct {
widget.Button
OnChanged func()
GenreDisabled bool
FavoriteDisabled bool
genreListChan chan []string
filter *mediaprovider.AlbumFilter
dialog *widget.PopUp
}
func NewAlbumFilterButton(filter *mediaprovider.AlbumFilter, fetchGenresFunc func() ([]*mediaprovider.Genre, error)) *AlbumFilterButton {
a := &AlbumFilterButton{
filter: filter,
Button: widget.Button{
Icon: theme.NewThemedResource(myTheme.FilterIcon),
},
}
a.OnTapped = a.showFilterDialog
a.ExtendBaseWidget(a)
a.genreListChan = make(chan []string)
go func() {
if genres, err := fetchGenresFunc(); err == nil {
genreNames := sharedutil.MapSlice(genres, func(g *mediaprovider.Genre) string {
return g.Name
})
sort.Strings(genreNames)
a.genreListChan <- genreNames
}
}()
return a
}
func (a *AlbumFilterButton) Refresh() {
themedIcon := a.Icon.(*theme.ThemedResource)
if a.filterEmpty() {
themedIcon.ColorName = theme.ColorNameForeground
} else {
themedIcon.ColorName = theme.ColorNamePrimary
}
a.Button.Refresh()
}
func (a *AlbumFilterButton) filterEmpty() bool {
return a.filter.MinYear == 0 && a.filter.MaxYear == 0 &&
(a.FavoriteDisabled || !a.filter.ExcludeFavorited && !a.filter.ExcludeUnfavorited) &&
(a.GenreDisabled || len(a.filter.Genres) == 0)
}
func (a *AlbumFilterButton) onFilterChanged() {
a.Refresh()
if a.OnChanged != nil {
a.OnChanged()
}
}
func (a *AlbumFilterButton) showFilterDialog() {
if a.dialog == nil {
filterDlg := NewAlbumFilterPopup(a)
filterDlg.OnChanged = a.onFilterChanged
a.dialog = widget.NewPopUp(filterDlg, fyne.CurrentApp().Driver().CanvasForObject(a))
}
pos := fyne.CurrentApp().Driver().AbsolutePositionForObject(a)
a.dialog.ShowAtPosition(fyne.NewPos(pos.X+a.Size().Width/2-a.dialog.MinSize().Width/2, pos.Y+a.Size().Height))
}
type AlbumFilterPopup struct {
widget.BaseWidget
OnChanged func()
isFavorite *widget.Check
isNotFavorite *widget.Check
genreFilter *GenreFilterSubsection
filterBtn *AlbumFilterButton
container *fyne.Container
}
func NewAlbumFilterPopup(filter *AlbumFilterButton) *AlbumFilterPopup {
a := &AlbumFilterPopup{filterBtn: filter}
a.ExtendBaseWidget(a)
debounceOnChanged := util.NewDebouncer(350*time.Millisecond, a.emitOnChanged)
// setup min and max year filters
yearValidator := func(curText, selText string, r rune) bool {
l := len(curText) - len(selText)
return unicode.IsDigit(r) && l <= 3 && (l > 0 || r != '0')
}
minYear := NewTextRestrictedEntry(yearValidator)
minYear.SetMinCharWidth(4)
minYear.OnChanged = func(yearStr string) {
if yearStr == "" {
a.filterBtn.filter.MinYear = 0
} else if i, err := strconv.Atoi(yearStr); err == nil {
a.filterBtn.filter.MinYear = i
}
debounceOnChanged()
}
if a.filterBtn.filter.MinYear > 0 {
minYear.Text = strconv.Itoa(a.filterBtn.filter.MinYear)
}
maxYear := NewTextRestrictedEntry(yearValidator)
maxYear.SetMinCharWidth(4)
maxYear.OnChanged = func(yearStr string) {
if yearStr == "" {
a.filterBtn.filter.MaxYear = 0
} else if i, err := strconv.Atoi(yearStr); err == nil {
a.filterBtn.filter.MaxYear = i
}
debounceOnChanged()
}
if a.filterBtn.filter.MaxYear > 0 {
maxYear.Text = strconv.Itoa(a.filterBtn.filter.MaxYear)
}
// setup is favorite/not favorite filters
a.isFavorite = widget.NewCheck("Is favorite", func(fav bool) {
if fav {
a.isNotFavorite.SetChecked(false)
}
a.filterBtn.filter.ExcludeUnfavorited = fav
debounceOnChanged()
})
a.isFavorite.Hidden = a.filterBtn.FavoriteDisabled
a.isNotFavorite = widget.NewCheck("Is not favorite", func(fav bool) {
if fav {
a.isFavorite.SetChecked(false)
}
a.filterBtn.filter.ExcludeFavorited = fav
debounceOnChanged()
})
a.isNotFavorite.Hidden = a.filterBtn.FavoriteDisabled
// create genre filter subsection
a.genreFilter = NewGenreFilterSubsection(func(selectedGenres []string) {
a.filterBtn.filter.Genres = selectedGenres
debounceOnChanged()
}, a.filterBtn.filter.Genres)
a.genreFilter.Hidden = a.filterBtn.GenreDisabled
// setup container
title := widget.NewLabel("Album filters")
title.TextStyle.Bold = true
a.container = container.NewVBox(
container.NewHBox(layout.NewSpacer(), title, layout.NewSpacer()),
container.NewHBox(widget.NewLabel("Year from"), minYear, widget.NewLabel("to"), maxYear),
container.NewHBox(a.isFavorite, a.isNotFavorite),
a.genreFilter,
)
go func() {
a.genreFilter.SetGenreList(<-a.filterBtn.genreListChan)
}()
return a
}
func (a *AlbumFilterPopup) Tapped(_ *fyne.PointEvent) {
// swallow the Tapped event so that the popup is
// only dismissed by clicking outside of it
}
func (a *AlbumFilterPopup) Refresh() {
a.isFavorite.Hidden = a.filterBtn.FavoriteDisabled
a.isNotFavorite.Hidden = a.filterBtn.FavoriteDisabled
a.genreFilter.Hidden = a.filterBtn.GenreDisabled
a.BaseWidget.Refresh()
}
func (a *AlbumFilterPopup) emitOnChanged() {
if a.OnChanged != nil {
a.OnChanged()
}
}
func (a *AlbumFilterPopup) CreateRenderer() fyne.WidgetRenderer {
return widget.NewSimpleRenderer(a.container)
}
type GenreFilterSubsection struct {
widget.BaseWidget
genreList []string
onChanged func([]string)
selectedGenres map[string]interface{}
selectedGenresMutex sync.RWMutex
filterText *widget.Entry
numSelectedText *widget.Label
allBtn *widget.Button
noneBtn *widget.Button
listModelMutex sync.RWMutex
genreListViewModel []string
genreListView *DisabledList
container *fyne.Container
}
func NewGenreFilterSubsection(onChanged func([]string), initialSelectedGenres []string) *GenreFilterSubsection {
g := &GenreFilterSubsection{
onChanged: onChanged,
selectedGenres: make(map[string]interface{}),
}
g.ExtendBaseWidget(g)
for _, genre := range initialSelectedGenres {
g.selectedGenres[genre] = nil
}
g.genreListView = NewDisabledList(
func() int {
g.listModelMutex.RLock()
defer g.listModelMutex.RUnlock()
return len(g.genreListViewModel)
},
func() fyne.CanvasObject {
return newGenreListViewRow(g.onGenreSelected)
},
func(id widget.ListItemID, obj fyne.CanvasObject) {
g.listModelMutex.RLock()
defer g.listModelMutex.RUnlock()
genre := g.genreListViewModel[id]
g.selectedGenresMutex.RLock()
_, selected := g.selectedGenres[genre]
g.selectedGenresMutex.RUnlock()
row := obj.(*genreListViewRow)
row.ID = id
row.Text = genre
row.Checked = selected
row.Refresh()
},
)
g.filterText = widget.NewEntry()
g.filterText.SetPlaceHolder("Filter genres")
i := NewTappableIcon(theme.ContentClearIcon())
i.NoPointerCursor = true
i.OnTapped = func() { g.filterText.SetText("") }
g.filterText.ActionItem = i
debouncer := util.NewDebouncer(300*time.Millisecond, g.updateGenreListView)
g.filterText.OnChanged = func(_ string) {
debouncer()
}
g.allBtn = widget.NewButton("All", func() { g.selectAllOrNoneInView(false) })
g.noneBtn = widget.NewButton("None", func() { g.selectAllOrNoneInView(true) })
title := widget.NewRichTextWithText("Genres")
title.Segments[0].(*widget.TextSegment).Style.TextStyle.Bold = true
g.numSelectedText = widget.NewLabel("(none selected)")
g.updateNumSelectedText()
titleRow := container.New(&layouts.HboxCustomPadding{ExtraPad: -10}, title, g.numSelectedText)
filterRow := container.NewBorder(nil, nil, nil, container.NewHBox(g.allBtn, g.noneBtn), g.filterText)
g.container = container.NewBorder(titleRow, nil, nil, nil,
container.New(&layouts.MaxPadLayout{PadLeft: 5, PadRight: 5},
container.NewBorder(filterRow, nil, nil, nil, g.genreListView),
),
)
return g
}
func (g *GenreFilterSubsection) MinSize() fyne.Size {
return fyne.NewSize(g.BaseWidget.MinSize().Width, 250)
}
func (g *GenreFilterSubsection) SetGenreList(genres []string) {
g.genreList = genres
g.updateGenreListView()
}
func (g *GenreFilterSubsection) updateGenreListView() {
g.listModelMutex.Lock()
if g.filterText.Text == "" {
g.genreListViewModel = g.genreList
} else {
filterText := strings.ToLower(g.filterText.Text)
g.genreListViewModel = sharedutil.FilterSlice(g.genreList, func(genre string) bool {
return strings.Contains(strings.ToLower(genre), filterText)
})
}
g.listModelMutex.Unlock()
g.genreListView.Refresh()
}
func (g *GenreFilterSubsection) onGenreSelected(row widget.ListItemID, selected bool) {
g.listModelMutex.RLock()
g.selectedGenresMutex.Lock()
if selected {
g.selectedGenres[g.genreListViewModel[row]] = nil
} else {
delete(g.selectedGenres, g.genreListViewModel[row])
}
g.selectedGenresMutex.Unlock()
g.listModelMutex.RUnlock()
g.invokeOnChanged()
}
func (g *GenreFilterSubsection) selectAllOrNoneInView(none bool) {
g.listModelMutex.RLock()
g.selectedGenresMutex.Lock()
for _, genre := range g.genreListViewModel {
if none {
delete(g.selectedGenres, genre)
} else {
g.selectedGenres[genre] = nil
}
}
g.selectedGenresMutex.Unlock()
g.listModelMutex.RUnlock()
g.genreListView.Refresh()
g.invokeOnChanged()
}
func (g *GenreFilterSubsection) invokeOnChanged() {
g.selectedGenresMutex.RLock()
g.updateNumSelectedText()
genres := make([]string, 0, len(g.selectedGenres))
for genre := range g.selectedGenres {
genres = append(genres, genre)
}
g.selectedGenresMutex.RUnlock()
g.onChanged(genres)
}
func (g *GenreFilterSubsection) updateNumSelectedText() {
numText := "none"
if l := len(g.selectedGenres); l > 0 {
numText = strconv.Itoa(l)
}
g.numSelectedText.SetText(fmt.Sprintf("(%s selected)", numText))
}
func (g *GenreFilterSubsection) CreateRenderer() fyne.WidgetRenderer {
return widget.NewSimpleRenderer(g.container)
}
type genreListViewRow struct {
widget.Check
ID widget.ListItemID
}
func newGenreListViewRow(onChanged func(widget.ListItemID, bool)) *genreListViewRow {
g := &genreListViewRow{}
g.ExtendBaseWidget(g)
g.OnChanged = func(b bool) {
onChanged(g.ID, b)
}
return g
}