aerc/commands/msg/delete.go
Jeffas 15b72df1da Rework msglist scrolling
This changes the scrolling to be done on the draw, when the height is
updated, ensuring that the selected item is kept on screen during
resizing.

Also, this ensures that messages will fill the screen when resizing the
window, for instance, shrinking and then growing drags down more
messages if possible.

This is a transplant of the dirlist scrolling logic.
2020-06-09 21:52:10 +02:00

107 lines
2.2 KiB
Go

package msg
import (
"errors"
"time"
"git.sr.ht/~sircmpwn/aerc/lib"
"git.sr.ht/~sircmpwn/aerc/models"
"git.sr.ht/~sircmpwn/aerc/widgets"
"git.sr.ht/~sircmpwn/aerc/worker/types"
)
type Delete struct{}
func init() {
register(Delete{})
}
func (Delete) Aliases() []string {
return []string{"delete", "delete-message"}
}
func (Delete) Complete(aerc *widgets.Aerc, args []string) []string {
return nil
}
func (Delete) Execute(aerc *widgets.Aerc, args []string) error {
if len(args) != 1 {
return errors.New("Usage: :delete")
}
h := newHelper(aerc)
store, err := h.store()
if err != nil {
return err
}
uids, err := h.markedOrSelectedUids()
if err != nil {
return err
}
acct, err := h.account()
if err != nil {
return err
}
store.Delete(uids, func(msg types.WorkerMessage) {
switch msg := msg.(type) {
case *types.Done:
aerc.PushStatus("Messages deleted.", 10*time.Second)
case *types.Error:
aerc.PushError(" " + msg.Error.Error())
}
})
//caution, can be nil
next := findNextNonDeleted(uids, store)
mv, isMsgView := h.msgProvider.(*widgets.MessageViewer)
if isMsgView {
if !aerc.Config().Ui.NextMessageOnDelete {
aerc.RemoveTab(h.msgProvider)
} else {
// no more messages in the list
if next == nil {
aerc.RemoveTab(h.msgProvider)
acct.Messages().Invalidate()
return nil
}
lib.NewMessageStoreView(next, store, aerc.DecryptKeys,
func(view lib.MessageView, err error) {
if err != nil {
aerc.PushError(err.Error())
return
}
nextMv := widgets.NewMessageViewer(acct, aerc.Config(), view)
aerc.ReplaceTab(mv, nextMv, next.Envelope.Subject)
})
}
}
acct.Messages().Invalidate()
return nil
}
func findNextNonDeleted(deleted []uint32, store *lib.MessageStore) *models.MessageInfo {
selected := store.Selected()
if !contains(deleted, selected.Uid) {
return selected
}
for {
store.Next()
next := store.Selected()
if next == selected || next == nil {
// the last message is in the deleted state or doesn't exist
return nil
}
return next
}
return nil // Never reached
}
func contains(uids []uint32, uid uint32) bool {
for _, item := range uids {
if item == uid {
return true
}
}
return false
}