package widgets
import (
"log"
"github.com/gdamore/tcell"
"git.sr.ht/~sircmpwn/aerc2/config"
"git.sr.ht/~sircmpwn/aerc2/lib"
"git.sr.ht/~sircmpwn/aerc2/lib/ui"
"git.sr.ht/~sircmpwn/aerc2/worker/types"
)
type MessageList struct {
conf *config.AercConfig
logger *log.Logger
height int
onInvalidate func(d ui.Drawable)
scroll int
selected int
spinner *Spinner
store *lib.MessageStore
}
// TODO: fish in config
func NewMessageList(logger *log.Logger) *MessageList {
ml := &MessageList{
logger: logger,
selected: 0,
spinner: NewSpinner(),
}
ml.spinner.OnInvalidate(func(_ ui.Drawable) {
ml.Invalidate()
})
// TODO: stop spinner, probably
ml.spinner.Start()
return ml
}
func (ml *MessageList) OnInvalidate(onInvalidate func(d ui.Drawable)) {
ml.onInvalidate = onInvalidate
}
func (ml *MessageList) Invalidate() {
if ml.onInvalidate != nil {
ml.onInvalidate(ml)
}
}
func (ml *MessageList) Draw(ctx *ui.Context) {
ml.height = ctx.Height()
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault)
if ml.store == nil {
ml.spinner.Draw(ctx)
return
}
var (
needsHeaders []uint32
row int = 0
)
for i := len(ml.store.Uids) - 1 - ml.scroll; i >= 0; i-- {
uid := ml.store.Uids[i]
msg := ml.store.Messages[uid]
if row >= ctx.Height() {
break
}
if msg == nil {
needsHeaders = append(needsHeaders, uid)
ml.spinner.Draw(ctx.Subcontext(0, row, ctx.Width(), 1))
row += 1
continue
}
style := tcell.StyleDefault
if row == ml.selected-ml.scroll {
style = style.Reverse(true)
}
if _, ok := ml.store.Deleted[msg.Uid]; ok {
style = style.Foreground(tcell.ColorGray)
}
ctx.Fill(0, row, ctx.Width(), 1, ' ', style)
ctx.Printf(0, row, style, "%s", msg.Envelope.Subject)
row += 1
}
if len(ml.store.Uids) == 0 {
msg := "(no messages)"
ctx.Printf((ctx.Width()/2)-(len(msg)/2), 0,
tcell.StyleDefault, "%s", msg)
}
if len(needsHeaders) != 0 {
ml.store.FetchHeaders(needsHeaders, nil)
ml.spinner.Start()
} else {
ml.spinner.Stop()
}
}
func (ml *MessageList) Height() int {
return ml.height
}
func (ml *MessageList) storeUpdate(store *lib.MessageStore) {
if ml.store != store {
return
}
if len(ml.store.Uids) > 0 {
for ml.selected >= len(ml.store.Uids) {
ml.Prev()
}
}
ml.Invalidate()
}
func (ml *MessageList) SetStore(store *lib.MessageStore) {
if ml.store == store {
ml.scroll = 0
ml.selected = 0
}
ml.store = store
if store != nil {
ml.spinner.Stop()
ml.store.OnUpdate(ml.storeUpdate)
} else {
ml.spinner.Start()
}
ml.Invalidate()
}
func (ml *MessageList) Store() *lib.MessageStore {
return ml.store
}
func (ml *MessageList) Selected() *types.MessageInfo {
return ml.store.Messages[ml.store.Uids[len(ml.store.Uids)-ml.selected-1]]
}
func (ml *MessageList) Select(index int) {
ml.selected = index
for ; ml.selected < 0; ml.selected = len(ml.store.Uids) + ml.selected {
}
if ml.selected > len(ml.store.Uids) {
ml.selected = len(ml.store.Uids)
}
// I'm too lazy to do the math right now
for ml.selected-ml.scroll >= ml.Height() {
ml.scroll += 1
}
for ml.selected-ml.scroll < 0 {
ml.scroll -= 1
}
}
func (ml *MessageList) nextPrev(delta int) {
if ml.store == nil || len(ml.store.Uids) == 0 {
return
}
ml.selected += delta
if ml.selected < 0 {
ml.selected = 0
}
if ml.selected >= len(ml.store.Uids) {
ml.selected = len(ml.store.Uids) - 1
}
if ml.Height() != 0 {
if ml.selected-ml.scroll >= ml.Height() {
ml.scroll += 1
} else if ml.selected-ml.scroll < 0 {
ml.scroll -= 1
}
}
ml.Invalidate()
}
func (ml *MessageList) Next() {
ml.nextPrev(1)
}
func (ml *MessageList) Prev() {
ml.nextPrev(-1)
}