ranger - mirror of ranger - a simple, vim-like file manager

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Diffstat (limited to 'doc')

0 files changed, 0 insertions, 0 deletions

package widgets import ( "bytes" "fmt" "io" "os/exec" "github.com/emersion/go-imap" "github.com/emersion/go-message" "github.com/emersion/go-message/mail" "github.com/gdamore/tcell" "github.com/mattn/go-runewidth" "git.sr.ht/~sircmpwn/aerc2/lib" "git.sr.ht/~sircmpwn/aerc2/lib/ui" "git.sr.ht/~sircmpwn/aerc2/worker/types" ) type MessageViewer struct { cmd *exec.Cmd msg *types.MessageInfo source io.Reader sink io.WriteCloser grid *ui.Grid term *Terminal } func formatAddresses(addrs []*imap.Address) string { val := bytes.Buffer{} for i, addr := range addrs { if addr.PersonalName != "" { val.WriteString(fmt.Sprintf("%s <%s@%s>", addr.PersonalName, addr.MailboxName, addr.HostName)) } else { val.WriteString(fmt.Sprintf("%s@%s", addr.MailboxName, addr.HostName)) } if i != len(addrs)-1 { val.WriteString(", ") } } return val.String() } func NewMessageViewer(store *lib.MessageStore, msg *types.MessageInfo) *MessageViewer { grid := ui.NewGrid().Rows([]ui.GridSpec{ {ui.SIZE_EXACT, 3}, // TODO: Based on number of header rows {ui.SIZE_WEIGHT, 1}, }).Columns([]ui.GridSpec{ {ui.SIZE_WEIGHT, 1}, }) // TODO: let user specify additional headers to show by default headers := ui.NewGrid().Rows([]ui.GridSpec{ {ui.SIZE_EXACT, 1}, {ui.SIZE_EXACT, 1}, {ui.SIZE_EXACT, 1}, }).Columns([]ui.GridSpec{ {ui.SIZE_WEIGHT, 1}, {ui.SIZE_WEIGHT, 1}, }) headers.AddChild( &HeaderView{ Name: "From", Value: formatAddresses(msg.Envelope.From), }).At(0, 0) headers.AddChild( &HeaderView{ Name: "To", Value: formatAddresses(msg.Envelope.To), }).At(0, 1) headers.AddChild( &HeaderView{ Name: "Subject", Value: msg.Envelope.Subject, }).At(1, 0).Span(1, 2) headers.AddChild(ui.NewFill(' ')).At(2, 0).Span(1, 2) body := ui.NewGrid().Rows([]ui.GridSpec{ {ui.SIZE_WEIGHT, 1}, }).Columns([]ui.GridSpec{ {ui.SIZE_WEIGHT, 1}, {ui.SIZE_EXACT, 20}, }) cmd := exec.Command("less") pipe, _ := cmd.StdinPipe() term, _ := NewTerminal(cmd) // TODO: configure multipart view. I left a spot for it in the grid body.AddChild(term).At(0, 0).Span(1, 2) grid.AddChild(headers).At(0, 0) grid.AddChild(body).At(1, 0) viewer := &MessageViewer{ cmd: cmd, grid: grid, msg: msg, sink: pipe, term: term, } store.FetchBodyPart(msg.Uid, 0, func(reader io.Reader) { viewer.source = reader viewer.attemptCopy() }) term.OnStart = func() { viewer.attemptCopy() } return viewer } func (mv *MessageViewer) attemptCopy() { if mv.source != nil && mv.cmd.Process != nil { header := make(message.Header) header.Set("Content-Transfer-Encoding", mv.msg.BodyStructure.Encoding) header.SetContentType( mv.msg.BodyStructure.MIMEType, mv.msg.BodyStructure.Params) header.SetContentDescription(mv.msg.BodyStructure.Description) go func() { entity, err := message.New(header, mv.source) if err != nil { io.WriteString(mv.sink, err.Error()) return } reader := mail.NewReader(entity) part, err := reader.NextPart() if err != nil { io.WriteString(mv.sink, err.Error()) return } io.Copy(mv.sink, part.Body) mv.sink.Close() }() } } func (mv *MessageViewer) Draw(ctx *ui.Context) { mv.grid.Draw(ctx) } func (mv *MessageViewer) Invalidate() { mv.grid.Invalidate() } func (mv *MessageViewer) OnInvalidate(fn func(d ui.Drawable)) { mv.grid.OnInvalidate(func(_ ui.Drawable) { fn(mv) }) } func (mv *MessageViewer) Event(event tcell.Event) bool { return mv.term.Event(event) } func (mv *MessageViewer) Focus(focus bool) { mv.term.Focus(focus) } type HeaderView struct { onInvalidate func(d ui.Drawable) Name string Value string } func (hv *HeaderView) Draw(ctx *ui.Context) { name := hv.Name size := runewidth.StringWidth(name) lim := ctx.Width() - size - 1 value := runewidth.Truncate(" "+hv.Value, lim, "…") var ( hstyle tcell.Style vstyle tcell.Style ) // TODO: Make this more robust and less dumb if hv.Name == "PGP" { vstyle = tcell.StyleDefault.Foreground(tcell.ColorGreen) hstyle = tcell.StyleDefault.Bold(true) } else { vstyle = tcell.StyleDefault hstyle = tcell.StyleDefault.Bold(true) } ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', vstyle) ctx.Printf(0, 0, hstyle, name) ctx.Printf(size, 0, vstyle, value) } func (hv *HeaderView) Invalidate() { if hv.onInvalidate != nil { hv.onInvalidate(hv) } } func (hv *HeaderView) OnInvalidate(fn func(d ui.Drawable)) { hv.onInvalidate = fn } type MultipartView struct { onInvalidate func(d ui.Drawable) } func (mpv *MultipartView) Draw(ctx *ui.Context) { ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault) ctx.Fill(0, 0, ctx.Width(), 1, ' ', tcell.StyleDefault.Reverse(true)) ctx.Printf(0, 0, tcell.StyleDefault.Reverse(true), "text/plain") ctx.Printf(0, 1, tcell.StyleDefault, "text/html") ctx.Printf(0, 2, tcell.StyleDefault, "application/pgp-si…") } func (mpv *MultipartView) Invalidate() { if mpv.onInvalidate != nil { mpv.onInvalidate(mpv) } } func (mpv *MultipartView) OnInvalidate(fn func(d ui.Drawable)) { mpv.onInvalidate = fn }


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