init: pristine aerc 0.20.0 source

commands/account/next.go

@@ -0,0 +1,108 @@
+package account
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"git.sr.ht/~rjarry/aerc/app"
+	"git.sr.ht/~rjarry/aerc/commands"
+	"git.sr.ht/~rjarry/aerc/lib"
+	"git.sr.ht/~rjarry/aerc/lib/ui"
+	"git.sr.ht/~rjarry/aerc/models"
+	"git.sr.ht/~rjarry/aerc/worker/types"
+)
+
+type NextPrevMsg struct {
+	Amount  int `opt:"n" default:"1" metavar:"<n>[%]" action:"ParseAmount"`
+	Percent bool
+}
+
+func init() {
+	commands.Register(NextPrevMsg{})
+}
+
+func (NextPrevMsg) Description() string {
+	return "Select the next or previous message in the message list."
+}
+
+func (NextPrevMsg) Context() commands.CommandContext {
+	return commands.MESSAGE_LIST | commands.MESSAGE_VIEWER
+}
+
+func (np *NextPrevMsg) ParseAmount(arg string) error {
+	if strings.HasSuffix(arg, "%") {
+		np.Percent = true
+		arg = strings.TrimSuffix(arg, "%")
+	}
+	i, err := strconv.ParseInt(arg, 10, 64)
+	if err != nil {
+		return err
+	}
+	np.Amount = int(i)
+	return nil
+}
+
+func (NextPrevMsg) Aliases() []string {
+	return []string{"next", "next-message", "prev", "prev-message"}
+}
+
+func (np NextPrevMsg) Execute(args []string) error {
+	acct := app.SelectedAccount()
+	if acct == nil {
+		return errors.New("No account selected")
+	}
+	store := acct.Store()
+	if store == nil {
+		return fmt.Errorf("No message store set.")
+	}
+
+	n := np.Amount
+	if np.Percent {
+		n = int(float64(acct.Messages().Height()) * (float64(n) / 100.0))
+	}
+	if args[0] == "prev-message" || args[0] == "prev" {
+		store.NextPrev(-n)
+	} else {
+		store.NextPrev(n)
+	}
+
+	if mv, ok := app.SelectedTabContent().(*app.MessageViewer); ok {
+		reloadViewer := func(nextMsg *models.MessageInfo) {
+			if nextMsg.Error != nil {
+				app.PushError(nextMsg.Error.Error())
+				return
+			}
+			lib.NewMessageStoreView(nextMsg, mv.MessageView().SeenFlagSet(),
+				store, app.CryptoProvider(), app.DecryptKeys,
+				func(view lib.MessageView, err error) {
+					if err != nil {
+						app.PushError(err.Error())
+						return
+					}
+					nextMv, err := app.NewMessageViewer(acct, view)
+					if err != nil {
+						app.PushError(err.Error())
+						return
+					}
+					app.ReplaceTab(mv, nextMv,
+						nextMsg.Envelope.Subject, true)
+				})
+		}
+		if nextMsg := store.Selected(); nextMsg != nil {
+			reloadViewer(nextMsg)
+		} else {
+			store.FetchHeaders([]models.UID{store.SelectedUid()},
+				func(msg types.WorkerMessage) {
+					if m, ok := msg.(*types.MessageInfo); ok {
+						reloadViewer(m.Info)
+					}
+				})
+		}
+	}
+
+	ui.Invalidate()
+
+	return nil
+}