055c6dc660
The exline widget works by matching actual keystrokes to a map of keybinds, and if a match is found sending simulated keystrokes through aerc. This has the effect of aerc thinking we are actually typing in the expanded command, and aerc attempts to draw the completions. This results in even basic navigation having two screen draws: For example, pressing 'j' to select the next message (:next), draws once for the initial key event and state change, and again after the completion debounce timer. Disable tab completion while aerc is simulating keystrokes. If the exline still has focus after simulating keystrokes, restore tab completion. Signed-off-by: Tim Culverhouse <tim@timculverhouse.com> Acked-by: Koni Marti <koni.marti@gmail.com>
118 lines
2.6 KiB
Go
118 lines
2.6 KiB
Go
package widgets
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import (
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"github.com/gdamore/tcell/v2"
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"git.sr.ht/~rjarry/aerc/config"
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"git.sr.ht/~rjarry/aerc/lib"
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"git.sr.ht/~rjarry/aerc/lib/ui"
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)
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type ExLine struct {
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ui.Invalidatable
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commit func(cmd string)
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finish func()
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tabcomplete func(cmd string) ([]string, string)
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cmdHistory lib.History
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input *ui.TextInput
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conf *config.AercConfig
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}
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func NewExLine(conf *config.AercConfig, cmd string, commit func(cmd string), finish func(),
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tabcomplete func(cmd string) ([]string, string),
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cmdHistory lib.History,
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) *ExLine {
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input := ui.NewTextInput("", &conf.Ui).Prompt(":").Set(cmd)
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if conf.Ui.CompletionPopovers {
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input.TabComplete(tabcomplete, conf.Ui.CompletionDelay)
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}
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exline := &ExLine{
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commit: commit,
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finish: finish,
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tabcomplete: tabcomplete,
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cmdHistory: cmdHistory,
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input: input,
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conf: conf,
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}
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input.OnInvalidate(func(d ui.Drawable) {
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exline.Invalidate()
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})
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return exline
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}
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func (x *ExLine) TabComplete(tabComplete func(string) ([]string, string)) {
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x.input.TabComplete(tabComplete, x.conf.Ui.CompletionDelay)
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}
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func NewPrompt(conf *config.AercConfig, prompt string, commit func(text string),
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tabcomplete func(cmd string) ([]string, string),
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) *ExLine {
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input := ui.NewTextInput("", &conf.Ui).Prompt(prompt)
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if conf.Ui.CompletionPopovers {
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input.TabComplete(tabcomplete, conf.Ui.CompletionDelay)
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}
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exline := &ExLine{
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commit: commit,
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tabcomplete: tabcomplete,
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cmdHistory: &nullHistory{input: input},
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input: input,
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}
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input.OnInvalidate(func(d ui.Drawable) {
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exline.Invalidate()
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})
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return exline
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}
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func (ex *ExLine) Invalidate() {
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ex.DoInvalidate(ex)
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}
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func (ex *ExLine) Draw(ctx *ui.Context) {
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ex.input.Draw(ctx)
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}
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func (ex *ExLine) Focus(focus bool) {
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ex.input.Focus(focus)
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}
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func (ex *ExLine) Event(event tcell.Event) bool {
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if event, ok := event.(*tcell.EventKey); ok {
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switch event.Key() {
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case tcell.KeyEnter, tcell.KeyCtrlJ:
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cmd := ex.input.String()
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ex.input.Focus(false)
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ex.commit(cmd)
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ex.finish()
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case tcell.KeyUp:
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ex.input.Set(ex.cmdHistory.Prev())
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ex.Invalidate()
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case tcell.KeyDown:
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ex.input.Set(ex.cmdHistory.Next())
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ex.Invalidate()
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case tcell.KeyEsc, tcell.KeyCtrlC:
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ex.input.Focus(false)
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ex.cmdHistory.Reset()
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ex.finish()
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default:
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return ex.input.Event(event)
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}
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}
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return true
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}
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type nullHistory struct {
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input *ui.TextInput
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}
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func (*nullHistory) Add(string) {}
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func (h *nullHistory) Next() string {
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return h.input.String()
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}
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func (h *nullHistory) Prev() string {
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return h.input.String()
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}
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func (*nullHistory) Reset() {}
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