167 lines
3.4 KiB
Go
167 lines
3.4 KiB
Go
package widgets
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import (
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"log"
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"github.com/emersion/go-imap"
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"github.com/gdamore/tcell"
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"git.sr.ht/~sircmpwn/aerc2/config"
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"git.sr.ht/~sircmpwn/aerc2/lib/ui"
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"git.sr.ht/~sircmpwn/aerc2/worker/types"
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)
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type MessageStore struct {
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DirInfo types.DirectoryInfo
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Messages map[uint32]*types.MessageInfo
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// Map of uids we've asked the worker to fetch
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onUpdate func(store *MessageStore)
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pendingBodies map[uint32]interface{}
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pendingHeaders map[uint32]interface{}
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worker *types.Worker
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}
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func NewMessageStore(worker *types.Worker,
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dirInfo *types.DirectoryInfo) *MessageStore {
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return &MessageStore{
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DirInfo: *dirInfo,
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pendingBodies: make(map[uint32]interface{}),
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pendingHeaders: make(map[uint32]interface{}),
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worker: worker,
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}
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}
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func (store *MessageStore) FetchHeaders(uids []uint32) {
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// TODO: this could be optimized by pre-allocating toFetch and trimming it
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// at the end. In practice we expect to get most messages back in one frame.
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var toFetch imap.SeqSet
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for _, uid := range uids {
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if _, ok := store.pendingHeaders[uid]; !ok {
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toFetch.AddNum(uint32(uid))
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store.pendingHeaders[uid] = nil
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}
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}
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if !toFetch.Empty() {
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store.worker.PostAction(&types.FetchMessageHeaders{
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Uids: toFetch,
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}, nil)
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}
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}
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func (store *MessageStore) Update(msg types.WorkerMessage) {
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update := false
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switch msg := msg.(type) {
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case *types.DirectoryInfo:
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store.DirInfo = *msg
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update = true
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break
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case *types.DirectoryContents:
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newMap := make(map[uint32]*types.MessageInfo)
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for _, uid := range msg.Uids {
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if msg, ok := store.Messages[uid]; ok {
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newMap[uid] = msg
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} else {
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newMap[uid] = nil
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}
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}
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store.Messages = newMap
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update = true
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break
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case *types.MessageInfo:
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store.Messages[msg.Uid] = msg
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if _, ok := store.pendingHeaders[msg.Uid]; msg.Envelope != nil && ok {
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delete(store.pendingHeaders, msg.Uid)
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}
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update = true
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break
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}
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if update && store.onUpdate != nil {
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store.onUpdate(store)
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}
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}
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func (store *MessageStore) OnUpdate(fn func(store *MessageStore)) {
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store.onUpdate = fn
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}
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type MessageList struct {
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conf *config.AercConfig
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logger *log.Logger
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onInvalidate func(d ui.Drawable)
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spinner *Spinner
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store *MessageStore
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}
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// TODO: fish in config
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func NewMessageList(logger *log.Logger) *MessageList {
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ml := &MessageList{
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logger: logger,
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spinner: NewSpinner(),
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}
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ml.spinner.OnInvalidate(func(_ ui.Drawable) {
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ml.Invalidate()
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})
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// TODO: stop spinner, probably
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ml.spinner.Start()
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return ml
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}
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func (ml *MessageList) OnInvalidate(onInvalidate func(d ui.Drawable)) {
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ml.onInvalidate = onInvalidate
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}
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func (ml *MessageList) Invalidate() {
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if ml.onInvalidate != nil {
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ml.onInvalidate(ml)
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}
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}
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func (ml *MessageList) Draw(ctx *ui.Context) {
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ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault)
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if ml.store == nil {
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ml.spinner.Draw(ctx)
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return
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}
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var (
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needsHeaders []uint32
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row int = 0
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)
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for uid, msg := range ml.store.Messages {
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if row >= ctx.Height() {
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break
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}
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if msg == nil {
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needsHeaders = append(needsHeaders, uid)
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ml.spinner.Draw(ctx.Subcontext(0, row, ctx.Width(), 1))
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}
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row += 1
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}
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if len(needsHeaders) != 0 {
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ml.store.FetchHeaders(needsHeaders)
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ml.spinner.Start()
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} else {
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ml.spinner.Stop()
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}
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}
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func (ml *MessageList) SetStore(store *MessageStore) {
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if ml.store == store {
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return
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}
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ml.store = store
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if store != nil {
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ml.spinner.Stop()
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} else {
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ml.spinner.Start()
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}
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ml.Invalidate()
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}
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