package widgets import ( "context" "fmt" "log" "math" "os" "regexp" "sort" "strings" "time" "github.com/gdamore/tcell/v2" "github.com/mattn/go-runewidth" "git.sr.ht/~rjarry/aerc/config" "git.sr.ht/~rjarry/aerc/lib" "git.sr.ht/~rjarry/aerc/lib/format" libsort "git.sr.ht/~rjarry/aerc/lib/sort" "git.sr.ht/~rjarry/aerc/lib/ui" "git.sr.ht/~rjarry/aerc/logging" "git.sr.ht/~rjarry/aerc/models" "git.sr.ht/~rjarry/aerc/worker/types" ) type DirectoryLister interface { ui.Drawable Selected() string Select(string) UpdateList(func([]string)) List() []string ClearList() NextPrev(int) CollapseFolder() ExpandFolder() SelectedMsgStore() (*lib.MessageStore, bool) MsgStore(string) (*lib.MessageStore, bool) SetMsgStore(string, *lib.MessageStore) FilterDirs([]string, []string, bool) []string } type DirectoryList struct { ui.Invalidatable Scrollable aercConf *config.AercConfig acctConf *config.AccountConfig store *lib.DirStore dirs []string logger *log.Logger selecting string selected string spinner *Spinner worker *types.Worker skipSelect context.Context skipSelectCancel context.CancelFunc connected bool } func NewDirectoryList(conf *config.AercConfig, acctConf *config.AccountConfig, logger *log.Logger, worker *types.Worker, ) DirectoryLister { ctx, cancel := context.WithCancel(context.Background()) dirlist := &DirectoryList{ aercConf: conf, acctConf: acctConf, logger: logger, store: lib.NewDirStore(), worker: worker, skipSelect: ctx, skipSelectCancel: cancel, } uiConf := dirlist.UiConfig() dirlist.spinner = NewSpinner(uiConf) dirlist.spinner.OnInvalidate(func(_ ui.Drawable) { dirlist.Invalidate() }) dirlist.spinner.Start() if uiConf.DirListTree { return NewDirectoryTree(dirlist, string(os.PathSeparator)) } return dirlist } func (dirlist *DirectoryList) UiConfig() *config.UIConfig { return dirlist.aercConf.GetUiConfig(map[config.ContextType]string{ config.UI_CONTEXT_ACCOUNT: dirlist.acctConf.Name, config.UI_CONTEXT_FOLDER: dirlist.Selected(), }) } func (dirlist *DirectoryList) List() []string { return dirlist.store.List() } func (dirlist *DirectoryList) ClearList() { dirlist.dirs = []string{} } func (dirlist *DirectoryList) UpdateList(done func(dirs []string)) { // TODO: move this logic into dirstore var dirs []string dirlist.worker.PostAction( &types.ListDirectories{}, func(msg types.WorkerMessage) { switch msg := msg.(type) { case *types.Directory: dirs = append(dirs, msg.Dir.Name) case *types.Done: dirlist.store.Update(dirs) dirlist.filterDirsByFoldersConfig() dirlist.sortDirsByFoldersSortConfig() dirlist.store.Update(dirlist.dirs) dirlist.spinner.Stop() dirlist.Invalidate() if done != nil { done(dirs) } } }) } func (dirlist *DirectoryList) CollapseFolder() { // no effect for the DirectoryList } func (dirlist *DirectoryList) ExpandFolder() { // no effect for the DirectoryList } func (dirlist *DirectoryList) Select(name string) { dirlist.selecting = name dirlist.skipSelectCancel() ctx, cancel := context.WithCancel(context.Background()) dirlist.skipSelect = ctx dirlist.skipSelectCancel = cancel go func(ctx context.Context) { defer logging.PanicHandler() select { case <-time.After(dirlist.UiConfig().DirListDelay): newStore := true for _, s := range dirlist.store.List() { if s == dirlist.selecting { newStore = false } } dirlist.worker.PostAction(&types.OpenDirectory{Directory: name}, func(msg types.WorkerMessage) { switch msg.(type) { case *types.Error: dirlist.selecting = "" dirlist.selected = "" case *types.Done: dirlist.selected = dirlist.selecting dirlist.filterDirsByFoldersConfig() hasSelected := false for _, d := range dirlist.dirs { if d == dirlist.selected { hasSelected = true break } } if !hasSelected && dirlist.selected != "" { dirlist.dirs = append(dirlist.dirs, dirlist.selected) } if dirlist.acctConf.EnableFoldersSort { sort.Strings(dirlist.dirs) } dirlist.sortDirsByFoldersSortConfig() if newStore { dirlist.worker.PostAction(&types.FetchDirectoryContents{}, nil) } } dirlist.Invalidate() }) dirlist.Invalidate() case <-ctx.Done(): dirlist.logger.Println("dirlist: skip", name) return } }(ctx) } func (dirlist *DirectoryList) Selected() string { return dirlist.selected } func (dirlist *DirectoryList) Invalidate() { dirlist.DoInvalidate(dirlist) } func (dirlist *DirectoryList) getDirString(name string, width int, recentUnseen func() string) string { percent := false rightJustify := false formatted := "" doRightJustify := func(s string) { formatted = runewidth.FillRight(formatted, width-len(s)) formatted = runewidth.Truncate(formatted, width-len(s), "…") } for _, char := range dirlist.UiConfig().DirListFormat { switch char { case '%': if percent { formatted += string(char) percent = false } else { percent = true } case '>': if percent { rightJustify = true } case 'N': name = format.CompactPath(name, os.PathSeparator) fallthrough case 'n': if percent { if rightJustify { doRightJustify(name) rightJustify = false } formatted += name percent = false } case 'r': if percent { rString := recentUnseen() if rightJustify { doRightJustify(rString) rightJustify = false } formatted += rString percent = false } default: formatted += string(char) } } return formatted } func (dirlist *DirectoryList) getRUEString(name string) string { msgStore, ok := dirlist.MsgStore(name) if !ok { return "" } if !msgStore.DirInfo.AccurateCounts { msgStore.DirInfo.Recent, msgStore.DirInfo.Unseen = countRUE(msgStore) } di := msgStore.DirInfo rueString := "" if di.Recent > 0 { rueString = fmt.Sprintf("%d/%d/%d", di.Recent, di.Unseen, di.Exists) } else if di.Unseen > 0 { rueString = fmt.Sprintf("%d/%d", di.Unseen, di.Exists) } else if di.Exists > 0 { rueString = fmt.Sprintf("%d", di.Exists) } return rueString } func (dirlist *DirectoryList) Draw(ctx *ui.Context) { ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', dirlist.UiConfig().GetStyle(config.STYLE_DIRLIST_DEFAULT)) if dirlist.spinner.IsRunning() { dirlist.spinner.Draw(ctx) return } if len(dirlist.dirs) == 0 { style := dirlist.UiConfig().GetStyle(config.STYLE_DIRLIST_DEFAULT) ctx.Printf(0, 0, style, dirlist.UiConfig().EmptyDirlist) return } dirlist.UpdateScroller(ctx.Height(), len(dirlist.dirs)) dirlist.EnsureScroll(findString(dirlist.dirs, dirlist.selecting)) textWidth := ctx.Width() if dirlist.NeedScrollbar() { textWidth -= 1 } if textWidth < 0 { textWidth = 0 } for i, name := range dirlist.dirs { if i < dirlist.Scroll() { continue } row := i - dirlist.Scroll() if row >= ctx.Height() { break } dirStyle := []config.StyleObject{} s := dirlist.getRUEString(name) switch strings.Count(s, "/") { case 1: dirStyle = append(dirStyle, config.STYLE_DIRLIST_UNREAD) case 2: dirStyle = append(dirStyle, config.STYLE_DIRLIST_RECENT) } style := dirlist.UiConfig().GetComposedStyle( config.STYLE_DIRLIST_DEFAULT, dirStyle) if name == dirlist.selecting { style = dirlist.UiConfig().GetComposedStyleSelected( config.STYLE_DIRLIST_DEFAULT, dirStyle) } ctx.Fill(0, row, textWidth, 1, ' ', style) dirString := dirlist.getDirString(name, textWidth, func() string { return s }) ctx.Printf(0, row, style, dirString) } if dirlist.NeedScrollbar() { scrollBarCtx := ctx.Subcontext(ctx.Width()-1, 0, 1, ctx.Height()) dirlist.drawScrollbar(scrollBarCtx) } } func (dirlist *DirectoryList) drawScrollbar(ctx *ui.Context) { gutterStyle := tcell.StyleDefault pillStyle := tcell.StyleDefault.Reverse(true) // gutter ctx.Fill(0, 0, 1, ctx.Height(), ' ', gutterStyle) // pill pillSize := int(math.Ceil(float64(ctx.Height()) * dirlist.PercentVisible())) pillOffset := int(math.Floor(float64(ctx.Height()) * dirlist.PercentScrolled())) ctx.Fill(0, pillOffset, 1, pillSize, ' ', pillStyle) } func (dirlist *DirectoryList) MouseEvent(localX int, localY int, event tcell.Event) { switch event := event.(type) { case *tcell.EventMouse: switch event.Buttons() { case tcell.Button1: clickedDir, ok := dirlist.Clicked(localX, localY) if ok { dirlist.Select(clickedDir) } case tcell.WheelDown: dirlist.Next() case tcell.WheelUp: dirlist.Prev() } } } func (dirlist *DirectoryList) Clicked(x int, y int) (string, bool) { if dirlist.dirs == nil || len(dirlist.dirs) == 0 { return "", false } for i, name := range dirlist.dirs { if i == y { return name, true } } return "", false } func (dirlist *DirectoryList) NextPrev(delta int) { curIdx := findString(dirlist.dirs, dirlist.selecting) if curIdx == len(dirlist.dirs) { return } newIdx := curIdx + delta ndirs := len(dirlist.dirs) if ndirs == 0 { return } if newIdx < 0 { newIdx = ndirs - 1 } else if newIdx >= ndirs { newIdx = 0 } dirlist.Select(dirlist.dirs[newIdx]) } func (dirlist *DirectoryList) Next() { dirlist.NextPrev(1) } func (dirlist *DirectoryList) Prev() { dirlist.NextPrev(-1) } func folderMatches(folder string, pattern string) bool { if len(pattern) == 0 { return false } if pattern[0] == '~' { r, err := regexp.Compile(pattern[1:]) if err != nil { return false } return r.Match([]byte(folder)) } return pattern == folder } // sortDirsByFoldersSortConfig sets dirlist.dirs to be sorted based on the // AccountConfig.FoldersSort option. Folders not included in the option // will be appended at the end in alphabetical order func (dirlist *DirectoryList) sortDirsByFoldersSortConfig() { if !dirlist.acctConf.EnableFoldersSort { return } sort.Slice(dirlist.dirs, func(i, j int) bool { foldersSort := dirlist.acctConf.FoldersSort iInFoldersSort := findString(foldersSort, dirlist.dirs[i]) jInFoldersSort := findString(foldersSort, dirlist.dirs[j]) if iInFoldersSort >= 0 && jInFoldersSort >= 0 { return iInFoldersSort < jInFoldersSort } if iInFoldersSort >= 0 { return true } if jInFoldersSort >= 0 { return false } return dirlist.dirs[i] < dirlist.dirs[j] }) } // filterDirsByFoldersConfig sets dirlist.dirs to the filtered subset of the // dirstore, based on AccountConfig.Folders (inclusion) and // AccountConfig.FoldersExclude (exclusion), in that order. func (dirlist *DirectoryList) filterDirsByFoldersConfig() { dirlist.dirs = dirlist.store.List() // 'folders' (if available) is used to make the initial list and // 'folders-exclude' removes from that list. configFolders := dirlist.acctConf.Folders dirlist.dirs = dirlist.FilterDirs(dirlist.dirs, configFolders, false) configFoldersExclude := dirlist.acctConf.FoldersExclude dirlist.dirs = dirlist.FilterDirs(dirlist.dirs, configFoldersExclude, true) } // FilterDirs filters directories by the supplied filter. If exclude is false, // the filter will only include directories from orig which exist in filters. // If exclude is true, the directories in filters are removed from orig func (dirlist *DirectoryList) FilterDirs(orig, filters []string, exclude bool) []string { if len(filters) == 0 { return orig } var dest []string for _, folder := range orig { // When excluding, include things by default, and vice-versa include := exclude for _, f := range filters { if folderMatches(folder, f) { // If matched an exclusion, don't include // If matched an inclusion, do include include = !exclude break } } if include { dest = append(dest, folder) } } return dest } func (dirlist *DirectoryList) SelectedMsgStore() (*lib.MessageStore, bool) { return dirlist.store.MessageStore(dirlist.selected) } func (dirlist *DirectoryList) MsgStore(name string) (*lib.MessageStore, bool) { return dirlist.store.MessageStore(name) } func (dirlist *DirectoryList) SetMsgStore(name string, msgStore *lib.MessageStore) { dirlist.store.SetMessageStore(name, msgStore) msgStore.OnUpdateDirs(func() { dirlist.Invalidate() }) } func findString(slice []string, str string) int { for i, s := range slice { if str == s { return i } } return -1 } func (dirlist *DirectoryList) getSortCriteria() []*types.SortCriterion { if len(dirlist.UiConfig().Sort) == 0 { return nil } criteria, err := libsort.GetSortCriteria(dirlist.UiConfig().Sort) if err != nil { dirlist.logger.Printf("getSortCriteria failed: %v", err) return nil } return criteria } func countRUE(msgStore *lib.MessageStore) (recent, unread int) { for _, msg := range msgStore.Messages { if msg == nil { continue } seen := false for _, flag := range msg.Flags { if flag == models.SeenFlag { seen = true } if flag == models.RecentFlag { recent++ } } if !seen { unread++ } } return recent, unread }