aerc/widgets/compose.go

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package widgets
import (
"bytes"
"fmt"
"io"
"net/textproto"
"os"
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"os/exec"
"strings"
"sync"
"time"
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"github.com/emersion/go-message/mail"
"github.com/gdamore/tcell/v2"
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"github.com/mattn/go-runewidth"
"github.com/mitchellh/go-homedir"
"github.com/pkg/errors"
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"git.sr.ht/~rjarry/aerc/completer"
"git.sr.ht/~rjarry/aerc/config"
"git.sr.ht/~rjarry/aerc/lib"
"git.sr.ht/~rjarry/aerc/lib/format"
"git.sr.ht/~rjarry/aerc/lib/templates"
"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"
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)
type Composer struct {
sync.Mutex
editors map[string]*headerEditor // indexes in lower case (from / cc / bcc)
header *mail.Header
parent models.OriginalMail // parent of current message, only set if reply
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acctConfig *config.AccountConfig
config *config.AercConfig
acct *AccountView
aerc *Aerc
attachments []lib.Attachment
editor *Terminal
email *os.File
grid *ui.Grid
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heditors *ui.Grid // from, to, cc display a user can jump to
review *reviewMessage
worker *types.Worker
completer *completer.Completer
crypto *cryptoStatus
sign bool
encrypt bool
attachKey bool
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layout HeaderLayout
focusable []ui.MouseableDrawableInteractive
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focused int
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sent bool
onClose []func(ti *Composer)
width int
textParts []*lib.Part
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}
func NewComposer(aerc *Aerc, acct *AccountView, conf *config.AercConfig,
acctConfig *config.AccountConfig, worker *types.Worker, template string,
h *mail.Header, orig models.OriginalMail,
) (*Composer, error) {
if h == nil {
h = new(mail.Header)
}
email, err := os.CreateTemp("", "aerc-compose-*.eml")
if err != nil {
// TODO: handle this better
return nil, err
}
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c := &Composer{
acct: acct,
acctConfig: acctConfig,
aerc: aerc,
config: conf,
header: h,
parent: orig,
email: email,
worker: worker,
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// You have to backtab to get to "From", since you usually don't edit it
focused: 1,
completer: nil,
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}
templateData := templates.ParseTemplateData(h, orig)
if err := c.AddTemplate(template, templateData); err != nil {
return nil, err
}
c.AddSignature()
if err := c.setupFor(acct); err != nil {
return nil, err
}
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c.ShowTerminal()
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return c, nil
}
func (c *Composer) SwitchAccount(newAcct *AccountView) error {
if c.acct == newAcct {
logging.Infof("same accounts: no switch")
return nil
}
// sync the header with the editors
for _, editor := range c.editors {
editor.storeValue()
}
// ensure that from header is updated, so remove it
c.header.Del("from")
// update entire composer with new the account
if err := c.setupFor(newAcct); err != nil {
return err
}
// sync the header with the editors
for _, editor := range c.editors {
editor.loadValue()
}
c.Invalidate()
c.aerc.Invalidate()
logging.Infof("account sucessfully switched")
return nil
}
func (c *Composer) setupFor(acct *AccountView) error {
c.Lock()
defer c.Unlock()
// set new account and accountConfig
c.acct = acct
c.acctConfig = acct.AccountConfig()
c.worker = acct.Worker()
// Set from header if not already in header
if fl, err := c.header.AddressList("from"); err != nil || fl == nil {
fl, err = mail.ParseAddressList(c.acctConfig.From)
if err != nil {
return err
}
if fl != nil {
c.header.SetAddressList("from", fl)
}
}
// update completer
cmd := c.acctConfig.AddressBookCmd
if cmd == "" {
cmd = c.config.Compose.AddressBookCmd
}
cmpl := completer.New(cmd, func(err error) {
c.aerc.PushError(
fmt.Sprintf("could not complete header: %v", err))
logging.Errorf("could not complete header: %v", err)
})
c.completer = cmpl
// if editor already exists, we have to get it from the focusable slice
// because this will be rebuild during buildComposeHeader()
var focusEditor ui.MouseableDrawableInteractive
if c.editor != nil && len(c.focusable) > 0 {
focusEditor = c.focusable[len(c.focusable)-1]
}
// rebuild editors and focusable slice
c.buildComposeHeader(c.aerc, cmpl)
// restore the editor in the focusable list
if focusEditor != nil {
c.focusable = append(c.focusable, focusEditor)
}
// redraw the grid
c.updateGrid()
// update the crypto parts
c.crypto = nil
c.sign = false
if c.acctConfig.PgpAutoSign {
err := c.SetSign(true)
logging.Warnf("failed to enable message signing: %v", err)
}
c.encrypt = false
if c.acctConfig.PgpOpportunisticEncrypt {
c.SetEncrypt(true)
}
err := c.updateCrypto()
if err != nil {
logging.Warnf("failed to update crypto: %v", err)
}
return nil
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}
func (c *Composer) buildComposeHeader(aerc *Aerc, cmpl *completer.Completer) {
c.layout = aerc.conf.Compose.HeaderLayout
c.editors = make(map[string]*headerEditor)
c.focusable = make([]ui.MouseableDrawableInteractive, 0)
uiConfig := c.acct.UiConfig()
for i, row := range c.layout {
for j, h := range row {
h = strings.ToLower(h)
c.layout[i][j] = h // normalize to lowercase
e := newHeaderEditor(h, c.header, uiConfig)
if aerc.conf.Ui.CompletionPopovers {
e.input.TabComplete(cmpl.ForHeader(h), uiConfig.CompletionDelay)
}
c.editors[h] = e
switch h {
case "from":
// Prepend From to support backtab
c.focusable = append([]ui.MouseableDrawableInteractive{e}, c.focusable...)
default:
c.focusable = append(c.focusable, e)
}
}
}
// Add Cc/Bcc editors to layout if present in header and not already visible
for _, h := range []string{"cc", "bcc"} {
if c.header.Has(h) {
if _, ok := c.editors[h]; !ok {
e := newHeaderEditor(h, c.header, uiConfig)
if aerc.conf.Ui.CompletionPopovers {
e.input.TabComplete(cmpl.ForHeader(h), uiConfig.CompletionDelay)
}
c.editors[h] = e
c.focusable = append(c.focusable, e)
c.layout = append(c.layout, []string{h})
}
}
}
// load current header values into all editors
for _, e := range c.editors {
e.loadValue()
}
}
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func (c *Composer) SetSent() {
c.sent = true
}
func (c *Composer) Sent() bool {
return c.sent
}
func (c *Composer) SetAttachKey(attach bool) error {
if !attach {
name := c.crypto.signKey + ".asc"
found := false
for _, a := range c.attachments {
if a.Name() == name {
found = true
}
}
if found {
err := c.DeleteAttachment(name)
if err != nil {
return fmt.Errorf("failed to delete attachment '%s: %w", name, err)
}
} else {
attach = !attach
}
}
if attach {
var s string
var err error
if c.crypto.signKey == "" {
if c.acctConfig.PgpKeyId != "" {
s = c.acctConfig.PgpKeyId
} else {
s, err = getSenderEmail(c)
if err != nil {
return err
}
}
c.crypto.signKey, err = c.aerc.Crypto.GetSignerKeyId(s)
if err != nil {
return err
}
}
r, err := c.aerc.Crypto.ExportKey(c.crypto.signKey)
if err != nil {
return err
}
c.attachments = append(c.attachments,
lib.NewPartAttachment(
lib.NewPart(
"application/pgp-keys",
map[string]string{"charset": "UTF-8"},
r,
),
c.crypto.signKey+".asc",
),
)
}
c.attachKey = attach
c.resetReview()
return nil
}
func (c *Composer) AttachKey() bool {
return c.attachKey
}
func (c *Composer) SetSign(sign bool) error {
c.sign = sign
err := c.updateCrypto()
if err != nil {
c.sign = !sign
return fmt.Errorf("Cannot sign message: %w", err)
}
return nil
}
func (c *Composer) Sign() bool {
return c.sign
}
func (c *Composer) SetEncrypt(encrypt bool) *Composer {
if !encrypt {
c.encrypt = encrypt
err := c.updateCrypto()
if err != nil {
logging.Warnf("failed to update crypto: %v", err)
}
return c
}
// Check on any attempt to encrypt, and any lost focus of "to", "cc", or
// "bcc" field. Use OnFocusLost instead of OnChange to limit keyring checks
c.encrypt = c.checkEncryptionKeys("")
if c.crypto.setEncOneShot {
// Prevent registering a lot of callbacks
c.OnFocusLost("to", c.checkEncryptionKeys)
c.OnFocusLost("cc", c.checkEncryptionKeys)
c.OnFocusLost("bcc", c.checkEncryptionKeys)
c.crypto.setEncOneShot = false
}
return c
}
func (c *Composer) Encrypt() bool {
return c.encrypt
}
func (c *Composer) updateCrypto() error {
if c.crypto == nil {
uiConfig := c.acct.UiConfig()
c.crypto = newCryptoStatus(uiConfig)
}
var err error
// Check if signKey is empty so we only run this once
if c.sign && c.crypto.signKey == "" {
cp := c.aerc.Crypto
var s string
if c.acctConfig.PgpKeyId != "" {
s = c.acctConfig.PgpKeyId
} else {
s, err = getSenderEmail(c)
if err != nil {
return err
}
}
c.crypto.signKey, err = cp.GetSignerKeyId(s)
if err != nil {
return err
}
}
crHeight := 0
st := ""
switch {
case c.sign && c.encrypt:
st = fmt.Sprintf("Sign (%s) & Encrypt", c.crypto.signKey)
crHeight = 1
case c.sign:
st = fmt.Sprintf("Sign (%s)", c.crypto.signKey)
crHeight = 1
case c.encrypt:
st = "Encrypt"
crHeight = 1
default:
st = ""
}
c.crypto.status.Text(st)
hHeight := len(c.layout)
c.grid.Rows([]ui.GridSpec{
{Strategy: ui.SIZE_EXACT, Size: ui.Const(hHeight)},
{Strategy: ui.SIZE_EXACT, Size: ui.Const(crHeight)},
{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)},
{Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)},
})
c.grid.AddChild(c.crypto).At(1, 0)
return nil
}
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// Note: this does not reload the editor. You must call this before the first
// Draw() call.
func (c *Composer) SetContents(reader io.Reader) *Composer {
_, err := c.email.Seek(0, io.SeekStart)
if err != nil {
logging.Warnf("failed to seek beginning of mail: %v", err)
}
_, err = io.Copy(c.email, reader)
if err != nil {
logging.Warnf("failed to copy mail: %v", err)
}
err = c.email.Sync()
if err != nil {
logging.Warnf("failed to sync mail: %v", err)
}
_, err = c.email.Seek(0, io.SeekStart)
if err != nil {
logging.Warnf("failed to seek beginning of mail after sync: %v", err)
}
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return c
}
func (c *Composer) AppendContents(reader io.Reader) {
_, err := c.email.Seek(0, io.SeekEnd)
if err != nil {
logging.Warnf("failed to seek beginning of mail: %v", err)
}
_, err = io.Copy(c.email, reader)
if err != nil {
logging.Warnf("failed to copy mail: %v", err)
}
err = c.email.Sync()
if err != nil {
logging.Warnf("failed to sync mail: %v", err)
}
}
func (c *Composer) AppendPart(mimetype string, params map[string]string, body io.Reader) error {
if !strings.HasPrefix(mimetype, "text") {
return fmt.Errorf("can only append text mimetypes")
}
c.textParts = append(c.textParts, lib.NewPart(mimetype, params, body))
c.resetReview()
return nil
}
func (c *Composer) AddTemplate(template string, data interface{}) error {
if template == "" {
return nil
}
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templateText, err := templates.ParseTemplateFromFile(
template, c.config.Templates.TemplateDirs, data)
if err != nil {
return err
}
mr, err := mail.CreateReader(templateText)
if err != nil {
return fmt.Errorf("Template loading failed: %w", err)
}
// copy the headers contained in the template to the compose headers
hf := mr.Header.Fields()
for hf.Next() {
c.header.Set(hf.Key(), hf.Value())
}
part, err := mr.NextPart()
if err != nil {
return fmt.Errorf("Could not get body of template: %w", err)
}
c.AppendContents(part.Body)
return nil
}
func (c *Composer) AddSignature() {
var signature []byte
if c.acctConfig.SignatureCmd != "" {
var err error
signature, err = c.readSignatureFromCmd()
if err != nil {
signature = c.readSignatureFromFile()
}
} else {
signature = c.readSignatureFromFile()
}
c.AppendContents(bytes.NewReader(signature))
}
func (c *Composer) readSignatureFromCmd() ([]byte, error) {
sigCmd := c.acctConfig.SignatureCmd
cmd := exec.Command("sh", "-c", sigCmd)
signature, err := cmd.Output()
if err != nil {
return nil, err
}
return signature, nil
}
func (c *Composer) readSignatureFromFile() []byte {
sigFile := c.acctConfig.SignatureFile
if sigFile == "" {
return nil
}
sigFile, err := homedir.Expand(sigFile)
if err != nil {
return nil
}
signature, err := os.ReadFile(sigFile)
if err != nil {
c.aerc.PushError(
fmt.Sprintf(" Error loading signature from file: %v", sigFile))
return nil
}
return signature
}
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func (c *Composer) FocusTerminal() *Composer {
c.Lock()
defer c.Unlock()
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if c.editor == nil {
return c
}
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c.focusable[c.focused].Focus(false)
c.focused = len(c.editors)
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c.focusable[c.focused].Focus(true)
return c
}
// OnHeaderChange registers an OnChange callback for the specified header.
func (c *Composer) OnHeaderChange(header string, fn func(subject string)) {
if editor, ok := c.editors[strings.ToLower(header)]; ok {
editor.OnChange(func() {
fn(editor.input.String())
})
}
}
// OnFocusLost registers an OnFocusLost callback for the specified header.
func (c *Composer) OnFocusLost(header string, fn func(input string) bool) {
if editor, ok := c.editors[strings.ToLower(header)]; ok {
editor.OnFocusLost(func() {
fn(editor.input.String())
})
}
}
func (c *Composer) OnClose(fn func(composer *Composer)) {
c.onClose = append(c.onClose, fn)
}
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func (c *Composer) Draw(ctx *ui.Context) {
c.width = ctx.Width()
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c.grid.Draw(ctx)
}
func (c *Composer) Invalidate() {
c.grid.Invalidate()
}
func (c *Composer) OnInvalidate(fn func(d ui.Drawable)) {
c.grid.OnInvalidate(func(_ ui.Drawable) {
fn(c)
})
}
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func (c *Composer) Close() {
for _, onClose := range c.onClose {
onClose(c)
}
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if c.email != nil {
path := c.email.Name()
c.email.Close()
os.Remove(path)
c.email = nil
}
if c.editor != nil {
c.editor.Destroy()
c.editor = nil
}
}
func (c *Composer) Bindings() string {
c.Lock()
defer c.Unlock()
switch c.editor {
case nil:
return "compose::review"
case c.focusable[c.focused]:
return "compose::editor"
default:
return "compose"
}
}
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func (c *Composer) Event(event tcell.Event) bool {
c.Lock()
defer c.Unlock()
if c.editor != nil {
return c.focusable[c.focused].Event(event)
}
return false
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}
func (c *Composer) MouseEvent(localX int, localY int, event tcell.Event) {
c.Lock()
defer c.Unlock()
for _, e := range c.focusable {
he, ok := e.(*headerEditor)
if ok && he.focused {
he.focused = false
}
}
c.grid.MouseEvent(localX, localY, event)
for i, e := range c.focusable {
he, ok := e.(*headerEditor)
if ok && he.focused {
c.focusable[c.focused].Focus(false)
c.focused = i
c.focusable[c.focused].Focus(true)
return
}
}
}
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func (c *Composer) Focus(focus bool) {
c.Lock()
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c.focusable[c.focused].Focus(focus)
c.Unlock()
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}
func (c *Composer) Config() *config.AccountConfig {
return c.acctConfig
}
func (c *Composer) Account() *AccountView {
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return c.acct
}
func (c *Composer) Worker() *types.Worker {
return c.worker
}
// PrepareHeader finalizes the header, adding the value from the editors
func (c *Composer) PrepareHeader() (*mail.Header, error) {
for _, editor := range c.editors {
editor.storeValue()
}
// control headers not normally set by the user
// repeated calls to PrepareHeader should be a noop
if !c.header.Has("Message-Id") {
err := c.header.GenerateMessageID()
if err != nil {
return nil, err
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}
}
if !c.header.Has("Date") {
if c.acctConfig.SendAsUTC {
c.header.SetDate(time.Now().UTC())
} else {
c.header.SetDate(time.Now())
}
}
return c.header, nil
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}
func getSenderEmail(c *Composer) (string, error) {
// add the from: field also to the 'recipients' list
if c.acctConfig.From == "" {
return "", errors.New("No 'From' configured for this account")
}
from, err := mail.ParseAddress(c.acctConfig.From)
if err != nil {
return "", errors.Wrap(err, "ParseAddress(config.From)")
}
return from.Address, nil
}
func getRecipientsEmail(c *Composer) ([]string, error) {
h, err := c.PrepareHeader()
if err != nil {
return nil, errors.Wrap(err, "PrepareHeader")
}
// collect all 'recipients' from header (to:, cc:, bcc:)
rcpts := make(map[string]bool)
for _, key := range []string{"to", "cc", "bcc"} {
list, err := h.AddressList(key)
if err != nil {
continue
}
for _, entry := range list {
if entry != nil {
rcpts[entry.Address] = true
}
}
}
// return email addresses as string slice
results := []string{}
for email := range rcpts {
results = append(results, email)
}
return results, nil
}
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func (c *Composer) WriteMessage(header *mail.Header, writer io.Writer) error {
if err := c.reloadEmail(); err != nil {
return err
}
if c.sign || c.encrypt {
var signedHeader mail.Header
signedHeader.SetContentType("text/plain", nil)
var buf bytes.Buffer
var cleartext io.WriteCloser
var err error
signer := ""
if c.sign {
if c.acctConfig.PgpKeyId != "" {
signer = c.acctConfig.PgpKeyId
} else {
signer, err = getSenderEmail(c)
if err != nil {
return err
}
}
}
if c.encrypt {
rcpts, err := getRecipientsEmail(c)
if err != nil {
return err
}
cleartext, err = c.aerc.Crypto.Encrypt(&buf, rcpts, signer, c.aerc.DecryptKeys, header)
if err != nil {
return err
}
} else {
cleartext, err = c.aerc.Crypto.Sign(&buf, signer, c.aerc.DecryptKeys, header)
if err != nil {
return err
}
}
err = writeMsgImpl(c, &signedHeader, cleartext)
if err != nil {
return err
}
err = cleartext.Close()
if err != nil {
return err
}
_, err = io.Copy(writer, &buf)
if err != nil {
return fmt.Errorf("failed to write message: %w", err)
}
return nil
} else {
return writeMsgImpl(c, header, writer)
}
}
func writeMsgImpl(c *Composer, header *mail.Header, writer io.Writer) error {
if len(c.attachments) == 0 && len(c.textParts) == 0 {
// no attachments
return writeInlineBody(header, c.email, writer)
} else {
// with attachments
w, err := mail.CreateWriter(writer, *header)
if err != nil {
return errors.Wrap(err, "CreateWriter")
}
parts := []*lib.Part{
lib.NewPart(
"text/plain",
map[string]string{"Charset": "UTF-8"},
c.email,
),
}
if err := writeMultipartBody(append(parts, c.textParts...), w); err != nil {
return errors.Wrap(err, "writeMultipartBody")
}
for _, a := range c.attachments {
if err := a.WriteTo(w); err != nil {
return errors.Wrap(err, "writeAttachment")
}
}
w.Close()
}
return nil
}
func writeInlineBody(header *mail.Header, body io.Reader, writer io.Writer) error {
header.SetContentType("text/plain", map[string]string{"charset": "UTF-8"})
w, err := mail.CreateSingleInlineWriter(writer, *header)
if err != nil {
return errors.Wrap(err, "CreateSingleInlineWriter")
}
defer w.Close()
if _, err := io.Copy(w, body); err != nil {
return errors.Wrap(err, "io.Copy")
}
return nil
}
// write the message body to the multipart message
func writeMultipartBody(parts []*lib.Part, w *mail.Writer) error {
bi, err := w.CreateInline()
if err != nil {
return errors.Wrap(err, "CreateInline")
}
defer bi.Close()
for _, part := range parts {
bh := mail.InlineHeader{}
bh.SetContentType(part.MimeType, part.Params)
bw, err := bi.CreatePart(bh)
if err != nil {
return errors.Wrap(err, "CreatePart")
}
defer bw.Close()
if _, err := io.Copy(bw, part.Body); err != nil {
return errors.Wrap(err, "io.Copy")
}
}
return nil
}
func (c *Composer) GetAttachments() []string {
var names []string
for _, a := range c.attachments {
names = append(names, a.Name())
}
return names
}
func (c *Composer) AddAttachment(path string) {
c.attachments = append(c.attachments, lib.NewFileAttachment(path))
c.resetReview()
}
func (c *Composer) AddPartAttachment(name string, mimetype string, params map[string]string, body io.Reader) {
c.attachments = append(c.attachments, lib.NewPartAttachment(
lib.NewPart(mimetype, params, body), name,
))
c.resetReview()
}
func (c *Composer) DeleteAttachment(name string) error {
for i, a := range c.attachments {
if a.Name() == name {
c.attachments = append(c.attachments[:i], c.attachments[i+1:]...)
c.resetReview()
return nil
}
}
return errors.New("attachment does not exist")
}
func (c *Composer) resetReview() {
if c.review != nil {
c.grid.RemoveChild(c.review)
c.review = newReviewMessage(c, nil)
c.grid.AddChild(c.review).At(3, 0)
}
}
func (c *Composer) termEvent(event tcell.Event) bool {
if event, ok := event.(*tcell.EventMouse); ok {
if event.Buttons() == tcell.Button1 {
c.FocusTerminal()
return true
}
}
return false
}
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func (c *Composer) termClosed(err error) {
c.Lock()
defer c.Unlock()
if c.editor == nil {
return
}
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c.grid.RemoveChild(c.editor)
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c.review = newReviewMessage(c, err)
c.grid.AddChild(c.review).At(3, 0)
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c.editor.Destroy()
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c.editor = nil
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c.focusable = c.focusable[:len(c.focusable)-1]
if c.focused >= len(c.focusable) {
c.focused = len(c.focusable) - 1
}
}
func (c *Composer) ShowTerminal() {
c.Lock()
defer c.Unlock()
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if c.editor != nil {
return
}
if c.review != nil {
c.grid.RemoveChild(c.review)
}
editorName := c.config.Compose.Editor
if editorName == "" {
editorName = os.Getenv("EDITOR")
}
if editorName == "" {
editorName = "vi"
}
editor := exec.Command("/bin/sh", "-c", editorName+" "+c.email.Name())
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c.editor, _ = NewTerminal(editor) // TODO: handle error
c.editor.OnEvent = c.termEvent
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c.editor.OnClose = c.termClosed
c.grid.AddChild(c.editor).At(3, 0)
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c.focusable = append(c.focusable, c.editor)
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}
func (c *Composer) PrevField() {
c.Lock()
defer c.Unlock()
c.focusable[c.focused].Focus(false)
c.focused--
if c.focused == -1 {
c.focused = len(c.focusable) - 1
}
c.focusable[c.focused].Focus(true)
}
func (c *Composer) NextField() {
c.Lock()
defer c.Unlock()
c.focusable[c.focused].Focus(false)
c.focused = (c.focused + 1) % len(c.focusable)
c.focusable[c.focused].Focus(true)
}
func (c *Composer) FocusEditor(editor string) {
c.Lock()
defer c.Unlock()
editor = strings.ToLower(editor)
c.focusable[c.focused].Focus(false)
for i, f := range c.focusable {
e := f.(*headerEditor)
if strings.ToLower(e.name) == editor {
c.focused = i
break
}
}
c.focusable[c.focused].Focus(true)
}
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// AddEditor appends a new header editor to the compose window.
func (c *Composer) AddEditor(header string, value string, appendHeader bool) {
c.Lock()
defer c.Unlock()
var editor *headerEditor
header = strings.ToLower(header)
if e, ok := c.editors[header]; ok {
e.storeValue() // flush modifications from the user to the header
editor = e
} else {
uiConfig := c.acct.UiConfig()
e := newHeaderEditor(header, c.header, uiConfig)
if uiConfig.CompletionPopovers {
e.input.TabComplete(c.completer.ForHeader(header), uiConfig.CompletionDelay)
}
c.editors[header] = e
c.layout = append(c.layout, []string{header})
// Insert focus of new editor before terminal editor
c.focusable = append(
c.focusable[:len(c.focusable)-1],
e,
c.focusable[len(c.focusable)-1],
)
editor = e
}
if appendHeader {
currVal := editor.input.String()
if currVal != "" {
value = strings.TrimSpace(currVal) + ", " + value
}
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}
if value != "" || appendHeader {
c.editors[header].input.Set(value)
editor.storeValue()
}
if value == "" {
c.FocusEditor(c.editors[header].name)
}
c.updateGrid()
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}
// updateGrid should be called when the underlying header layout is changed.
func (c *Composer) updateGrid() {
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heditors, height := c.layout.grid(
func(h string) ui.Drawable {
return c.editors[h]
},
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)
if c.grid == nil {
c.grid = ui.NewGrid().Columns([]ui.GridSpec{
{Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)},
})
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}
crHeight := 0
if c.sign || c.encrypt {
crHeight = 1
}
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c.grid.Rows([]ui.GridSpec{
{Strategy: ui.SIZE_EXACT, Size: ui.Const(height)},
{Strategy: ui.SIZE_EXACT, Size: ui.Const(crHeight)},
{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)},
{Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)},
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})
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if c.heditors != nil {
c.grid.RemoveChild(c.heditors)
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}
borderStyle := c.acct.UiConfig().GetStyle(config.STYLE_BORDER)
borderChar := c.acct.UiConfig().BorderCharHorizontal
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c.heditors = heditors
c.grid.AddChild(c.heditors).At(0, 0)
c.grid.AddChild(ui.NewFill(borderChar, borderStyle)).At(2, 0)
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}
func (c *Composer) reloadEmail() error {
name := c.email.Name()
c.email.Close()
file, err := os.Open(name)
if err != nil {
return errors.Wrap(err, "ReloadEmail")
}
c.email = file
return nil
}
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type headerEditor struct {
name string
header *mail.Header
focused bool
input *ui.TextInput
uiConfig *config.UIConfig
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}
func newHeaderEditor(name string, h *mail.Header,
uiConfig *config.UIConfig,
) *headerEditor {
he := &headerEditor{
input: ui.NewTextInput("", uiConfig),
name: name,
header: h,
uiConfig: uiConfig,
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}
he.loadValue()
return he
}
// extractHumanHeaderValue extracts the human readable string for key from the
// header. If a parsing error occurs the raw value is returned
func extractHumanHeaderValue(key string, h *mail.Header) string {
var val string
var err error
switch strings.ToLower(key) {
case "to", "from", "cc", "bcc":
var list []*mail.Address
list, err = h.AddressList(key)
val = format.FormatAddresses(list)
default:
val, err = h.Text(key)
}
if err != nil {
// if we can't parse it, show it raw
val = h.Get(key)
}
return val
}
// loadValue loads the value of he.name form the underlying header
// the value is decoded and meant for human consumption.
// decoding issues are ignored and return their raw values
func (he *headerEditor) loadValue() {
he.input.Set(extractHumanHeaderValue(he.name, he.header))
he.input.Invalidate()
}
// storeValue writes the current state back to the underlying header.
// errors are ignored
func (he *headerEditor) storeValue() {
val := he.input.String()
switch strings.ToLower(he.name) {
case "to", "from", "cc", "bcc":
if strings.TrimSpace(val) == "" {
// if header is empty, delete it
he.header.Del(he.name)
return
}
list, err := mail.ParseAddressList(val)
if err == nil {
he.header.SetAddressList(he.name, list)
} else {
// garbage, but it'll blow up upon sending and the user can
// fix the issue
he.header.SetText(he.name, val)
}
default:
he.header.SetText(he.name, val)
}
}
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func (he *headerEditor) Draw(ctx *ui.Context) {
name := textproto.CanonicalMIMEHeaderKey(he.name)
// Extra character to put a blank cell between the header and the input
size := runewidth.StringWidth(name+":") + 1
defaultStyle := he.uiConfig.GetStyle(config.STYLE_DEFAULT)
headerStyle := he.uiConfig.GetStyle(config.STYLE_HEADER)
ctx.Fill(0, 0, size, ctx.Height(), ' ', defaultStyle)
ctx.Printf(0, 0, headerStyle, "%s:", name)
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he.input.Draw(ctx.Subcontext(size, 0, ctx.Width()-size, 1))
}
func (he *headerEditor) MouseEvent(localX int, localY int, event tcell.Event) {
if event, ok := event.(*tcell.EventMouse); ok {
if event.Buttons() == tcell.Button1 {
he.focused = true
}
width := runewidth.StringWidth(he.name + " ")
if localX >= width {
he.input.MouseEvent(localX-width, localY, event)
}
}
}
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func (he *headerEditor) Invalidate() {
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he.input.Invalidate()
}
func (he *headerEditor) OnInvalidate(fn func(ui.Drawable)) {
he.input.OnInvalidate(func(_ ui.Drawable) {
fn(he)
})
}
func (he *headerEditor) Focus(focused bool) {
he.focused = focused
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he.input.Focus(focused)
}
func (he *headerEditor) Event(event tcell.Event) bool {
return he.input.Event(event)
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}
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func (he *headerEditor) OnChange(fn func()) {
he.input.OnChange(func(_ *ui.TextInput) {
fn()
})
}
func (he *headerEditor) OnFocusLost(fn func()) {
he.input.OnFocusLost(func(_ *ui.TextInput) {
fn()
})
}
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type reviewMessage struct {
composer *Composer
grid *ui.Grid
}
var reviewCommands = [][]string{
{":send<enter>", "Send"},
{":edit<enter>", "Edit"},
{":attach<space>", "Add attachment"},
{":detach<space>", "Remove attachment"},
{":postpone<enter>", "Postpone"},
{":abort<enter>", "Abort (discard message, no confirmation)"},
{":choose -o d discard abort -o p postpone postpone<enter>", "Abort or postpone"},
}
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func newReviewMessage(composer *Composer, err error) *reviewMessage {
bindings := composer.config.MergeContextualBinds(
composer.config.Bindings.ComposeReview,
config.BIND_CONTEXT_ACCOUNT,
composer.acctConfig.Name,
"compose::review",
)
var actions []string
for _, command := range reviewCommands {
cmd := command[0]
name := command[1]
strokes, _ := config.ParseKeyStrokes(cmd)
var inputs []string
for _, input := range bindings.GetReverseBindings(strokes) {
inputs = append(inputs, config.FormatKeyStrokes(input))
}
actions = append(actions, fmt.Sprintf(" %-6s %-40s %s",
strings.Join(inputs, ", "), name, cmd))
}
spec := []ui.GridSpec{
{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)},
}
for i := 0; i < len(actions)-1; i++ {
spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
}
spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(2)})
spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
for i := 0; i < len(composer.attachments)-1; i++ {
spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
}
if len(composer.textParts) > 0 {
spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
for i := 0; i < len(composer.textParts); i++ {
spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
}
}
// make the last element fill remaining space
spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)})
grid := ui.NewGrid().Rows(spec).Columns([]ui.GridSpec{
{Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)},
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})
uiConfig := composer.acct.UiConfig()
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if err != nil {
grid.AddChild(ui.NewText(err.Error(), uiConfig.GetStyle(config.STYLE_ERROR)))
grid.AddChild(ui.NewText("Press [q] to close this tab.",
uiConfig.GetStyle(config.STYLE_DEFAULT))).At(1, 0)
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} else {
grid.AddChild(ui.NewText("Send this email?",
uiConfig.GetStyle(config.STYLE_TITLE))).At(0, 0)
i := 1
for _, action := range actions {
grid.AddChild(ui.NewText(action,
uiConfig.GetStyle(config.STYLE_DEFAULT))).At(i, 0)
i += 1
}
grid.AddChild(ui.NewText("Attachments:",
uiConfig.GetStyle(config.STYLE_TITLE))).At(i, 0)
i += 1
if len(composer.attachments) == 0 {
grid.AddChild(ui.NewText("(none)",
uiConfig.GetStyle(config.STYLE_DEFAULT))).At(i, 0)
i += 1
} else {
for _, a := range composer.attachments {
grid.AddChild(ui.NewText(a.Name(), uiConfig.GetStyle(config.STYLE_DEFAULT))).
At(i, 0)
i += 1
}
}
if len(composer.textParts) > 0 {
grid.AddChild(ui.NewText("Parts:",
uiConfig.GetStyle(config.STYLE_TITLE))).At(i, 0)
i += 1
grid.AddChild(ui.NewText("text/plain", uiConfig.GetStyle(config.STYLE_DEFAULT))).At(i, 0)
i += 1
for _, p := range composer.textParts {
grid.AddChild(ui.NewText(p.MimeType, uiConfig.GetStyle(config.STYLE_DEFAULT))).At(i, 0)
i += 1
}
}
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}
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return &reviewMessage{
composer: composer,
grid: grid,
}
}
func (rm *reviewMessage) Invalidate() {
rm.grid.Invalidate()
}
func (rm *reviewMessage) OnInvalidate(fn func(ui.Drawable)) {
rm.grid.OnInvalidate(func(_ ui.Drawable) {
fn(rm)
})
}
func (rm *reviewMessage) Draw(ctx *ui.Context) {
rm.grid.Draw(ctx)
}
type cryptoStatus struct {
title string
status *ui.Text
uiConfig *config.UIConfig
signKey string
setEncOneShot bool
}
func newCryptoStatus(uiConfig *config.UIConfig) *cryptoStatus {
defaultStyle := uiConfig.GetStyle(config.STYLE_DEFAULT)
return &cryptoStatus{
title: "Security",
status: ui.NewText("", defaultStyle),
uiConfig: uiConfig,
signKey: "",
setEncOneShot: true,
}
}
func (cs *cryptoStatus) Draw(ctx *ui.Context) {
// Extra character to put a blank cell between the header and the input
size := runewidth.StringWidth(cs.title+":") + 1
defaultStyle := cs.uiConfig.GetStyle(config.STYLE_DEFAULT)
titleStyle := cs.uiConfig.GetStyle(config.STYLE_HEADER)
ctx.Fill(0, 0, size, ctx.Height(), ' ', defaultStyle)
ctx.Printf(0, 0, titleStyle, "%s:", cs.title)
cs.status.Draw(ctx.Subcontext(size, 0, ctx.Width()-size, 1))
}
func (cs *cryptoStatus) Invalidate() {
cs.status.Invalidate()
}
func (cs *cryptoStatus) OnInvalidate(fn func(ui.Drawable)) {
cs.status.OnInvalidate(func(_ ui.Drawable) {
fn(cs)
})
}
func (c *Composer) checkEncryptionKeys(_ string) bool {
rcpts, err := getRecipientsEmail(c)
if err != nil {
// checkEncryptionKeys gets registered as a callback and must
// explicitly call c.SetEncrypt(false) when encryption is not possible
c.SetEncrypt(false)
st := fmt.Sprintf("Cannot encrypt: %v", err)
c.aerc.statusline.PushError(st)
return false
}
var mk []string
for _, rcpt := range rcpts {
key, err := c.aerc.Crypto.GetKeyId(rcpt)
if err != nil || key == "" {
mk = append(mk, rcpt)
}
}
if len(mk) > 0 {
c.SetEncrypt(false)
st := fmt.Sprintf("Cannot encrypt, missing keys: %s", strings.Join(mk, ", "))
c.aerc.statusline.PushError(st)
return false
}
// If callbacks were registered, encrypt will be set when user removes
// recipients with missing keys
c.encrypt = true
err = c.updateCrypto()
if err != nil {
logging.Warnf("failed update crypto: %v", err)
}
return true
}