15b72df1da
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.
83 lines
1.6 KiB
Go
83 lines
1.6 KiB
Go
package account
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import (
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"errors"
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"fmt"
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"strconv"
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"strings"
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"git.sr.ht/~sircmpwn/aerc/widgets"
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)
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type NextPrevMsg struct{}
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func init() {
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register(NextPrevMsg{})
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}
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func (NextPrevMsg) Aliases() []string {
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return []string{"next", "next-message", "prev", "prev-message"}
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}
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func (NextPrevMsg) Complete(aerc *widgets.Aerc, args []string) []string {
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return nil
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}
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func (NextPrevMsg) Execute(aerc *widgets.Aerc, args []string) error {
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n, pct, err := ParseNextPrevMessage(args)
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if err != nil {
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return err
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}
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acct := aerc.SelectedAccount()
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if acct == nil {
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return errors.New("No account selected")
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}
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return ExecuteNextPrevMessage(args, acct, pct, n)
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}
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func ParseNextPrevMessage(args []string) (int, bool, error) {
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if len(args) > 2 {
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return 0, false, nextPrevMessageUsage(args[0])
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}
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var (
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n int = 1
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err error
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pct bool
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)
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if len(args) > 1 {
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if strings.HasSuffix(args[1], "%") {
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pct = true
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args[1] = args[1][:len(args[1])-1]
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}
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n, err = strconv.Atoi(args[1])
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if err != nil {
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return 0, false, nextPrevMessageUsage(args[0])
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}
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}
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return n, pct, nil
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}
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func ExecuteNextPrevMessage(args []string, acct *widgets.AccountView, pct bool, n int) error {
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if pct {
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n = int(float64(acct.Messages().Height()) * (float64(n) / 100.0))
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}
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if args[0] == "prev-message" || args[0] == "prev" {
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store := acct.Store()
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if store != nil {
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store.NextPrev(-n)
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acct.Messages().Invalidate()
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}
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} else {
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store := acct.Store()
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if store != nil {
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store.NextPrev(n)
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acct.Messages().Invalidate()
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}
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}
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return nil
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}
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func nextPrevMessageUsage(cmd string) error {
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return fmt.Errorf("Usage: %s [<n>[%%]]", cmd)
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}
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