aerc/widgets/msglist.go -rw-r--r-- 5.5 KiB View raw
                                                                                
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package widgets

import (
	"fmt"
	"log"

	"github.com/gdamore/tcell"
	"github.com/mattn/go-runewidth"

	"git.sr.ht/~sircmpwn/aerc/config"
	"git.sr.ht/~sircmpwn/aerc/lib"
	"git.sr.ht/~sircmpwn/aerc/lib/format"
	"git.sr.ht/~sircmpwn/aerc/lib/ui"
	"git.sr.ht/~sircmpwn/aerc/models"
)

type MessageList struct {
	ui.Invalidatable
	conf          *config.AercConfig
	logger        *log.Logger
	height        int
	scroll        int
	nmsgs         int
	spinner       *Spinner
	store         *lib.MessageStore
	isInitalizing bool
	aerc          *Aerc
}

func NewMessageList(conf *config.AercConfig, logger *log.Logger, aerc *Aerc) *MessageList {
1 reference
ml := &MessageList{ conf: conf, logger: logger, spinner: NewSpinner(&conf.Ui), isInitalizing: true, aerc: aerc, } ml.spinner.OnInvalidate(func(_ ui.Drawable) { ml.Invalidate() }) // TODO: stop spinner, probably ml.spinner.Start() return ml } func (ml *MessageList) Invalidate() {
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ml.DoInvalidate(ml) } func (ml *MessageList) Draw(ctx *ui.Context) { ml.height = ctx.Height() ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault) store := ml.Store() if store == nil { if ml.isInitalizing { ml.spinner.Draw(ctx) return } else { ml.spinner.Stop() ml.drawEmptyMessage(ctx) return } } var ( needsHeaders []uint32 row int = 0 ) uids := store.Uids() for i := len(uids) - 1 - ml.scroll; i >= 0; i-- { uid := uids[i] msg := 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 // current row if row == ml.store.SelectedIndex()-ml.scroll { style = style.Reverse(true) } // deleted message if _, ok := store.Deleted[msg.Uid]; ok { style = style.Foreground(tcell.ColorGray) } // unread message seen := false for _, flag := range msg.Flags { if flag == models.SeenFlag { seen = true } } if !seen { style = style.Bold(true) } ctx.Fill(0, row, ctx.Width(), 1, ' ', style) fmtStr, args, err := format.ParseMessageFormat( ml.conf.Ui.IndexFormat, ml.conf.Ui.TimestampFormat, "", i, msg) if err != nil { ctx.Printf(0, row, style, "%v", err) } else { line := fmt.Sprintf(fmtStr, args...) line = runewidth.Truncate(line, ctx.Width(), "…") ctx.Printf(0, row, style, "%s", line) } row += 1 } if len(uids) == 0 { ml.drawEmptyMessage(ctx) } if len(needsHeaders) != 0 { store.FetchHeaders(needsHeaders, nil) ml.spinner.Start() } else { ml.spinner.Stop() } } func (ml *MessageList) MouseEvent(localX int, localY int, event tcell.Event) { switch event := event.(type) { case *tcell.EventMouse: switch event.Buttons() { case tcell.Button1: if ml.aerc == nil { return } selectedMsg, ok := ml.Clicked(localX, localY) if ok { ml.Select(selectedMsg) acct := ml.aerc.SelectedAccount() if acct.Messages().Empty() { return } store := acct.Messages().Store() msg := acct.Messages().Selected() if msg == nil { return } viewer := NewMessageViewer(acct, ml.aerc.Config(), store, msg) ml.aerc.NewTab(viewer, msg.Envelope.Subject) } case tcell.WheelDown: ml.store.Next() ml.Scroll() case tcell.WheelUp: ml.store.Prev() ml.Scroll() } } } func (ml *MessageList) Clicked(x, y int) (int, bool) {
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store := ml.Store() if store == nil || ml.nmsgs == 0 || y >= ml.nmsgs { return 0, false } return y + ml.scroll, true } func (ml *MessageList) Height() int {
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return ml.height } func (ml *MessageList) storeUpdate(store *lib.MessageStore) {
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if ml.Store() != store { return } uids := store.Uids() if len(uids) > 0 { // When new messages come in, advance the cursor accordingly // Note that this assumes new messages are appended to the top, which // isn't necessarily true once we implement SORT... ideally we'd look // for the previously selected UID. if len(uids) > ml.nmsgs && ml.nmsgs != 0 { for i := 0; i < len(uids)-ml.nmsgs; i++ { ml.Store().Next() } } if len(uids) < ml.nmsgs && ml.nmsgs != 0 { for i := 0; i < ml.nmsgs-len(uids); i++ { ml.Store().Prev() } } ml.nmsgs = len(uids) } ml.Scroll() ml.Invalidate() } func (ml *MessageList) SetStore(store *lib.MessageStore) {
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if ml.Store() != store { ml.scroll = 0 } ml.store = store if store != nil { ml.spinner.Stop() ml.nmsgs = len(store.Uids()) store.OnUpdate(ml.storeUpdate) } else { ml.spinner.Start() } ml.Invalidate() } func (ml *MessageList) SetInitDone() {
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ml.isInitalizing = false } func (ml *MessageList) Store() *lib.MessageStore {
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return ml.store } func (ml *MessageList) Empty() bool {
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store := ml.Store() return store == nil || len(store.Uids()) == 0 } func (ml *MessageList) Selected() *models.MessageInfo {
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store := ml.Store() uids := store.Uids() return store.Messages[uids[len(uids)-ml.store.SelectedIndex()-1]] } func (ml *MessageList) Select(index int) {
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store := ml.Store() store.Select(index) ml.Scroll() } func (ml *MessageList) Scroll() {
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store := ml.Store() if store == nil || len(store.Uids()) == 0 { return } if ml.Height() != 0 { // I'm too lazy to do the math right now for store.SelectedIndex()-ml.scroll >= ml.Height() { ml.scroll += 1 } for store.SelectedIndex()-ml.scroll < 0 { ml.scroll -= 1 } } ml.Invalidate() } func (ml *MessageList) drawEmptyMessage(ctx *ui.Context) {
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msg := ml.conf.Ui.EmptyMessage ctx.Printf((ctx.Width()/2)-(len(msg)/2), 0, tcell.StyleDefault, "%s", msg) }