aerc/widgets/exline.go
Greg Anders 4bdef7d860 Add UI options to save/pipe messages with unsupported mimetypes
Adds a message indicating the user's ability to :save or :pipe a message
with an unsupported mimetype and also adds a selector widget (similar to
the tutorial).

The selector widget was previously defined in the account wizard module,
so this commit breaks it out into its own module to allow for re-use.

Further, modify the BeginExLine() function to take an argument that
pre-populates the command line, allowing functions to initiate an ex
command without executing it.

Closes #95.
2019-11-17 13:19:13 -05:00

105 lines
2.1 KiB
Go

package widgets
import (
"github.com/gdamore/tcell"
"git.sr.ht/~sircmpwn/aerc/lib"
"git.sr.ht/~sircmpwn/aerc/lib/ui"
)
type ExLine struct {
ui.Invalidatable
commit func(cmd string)
finish func()
tabcomplete func(cmd string) []string
cmdHistory lib.History
input *ui.TextInput
}
func NewExLine(cmd string, commit func(cmd string), finish func(),
tabcomplete func(cmd string) []string,
cmdHistory lib.History) *ExLine {
input := ui.NewTextInput("").Prompt(":").TabComplete(tabcomplete).Set(cmd)
exline := &ExLine{
commit: commit,
finish: finish,
tabcomplete: tabcomplete,
cmdHistory: cmdHistory,
input: input,
}
input.OnInvalidate(func(d ui.Drawable) {
exline.Invalidate()
})
return exline
}
func NewPrompt(prompt string, commit func(text string),
tabcomplete func(cmd string) []string) *ExLine {
input := ui.NewTextInput("").Prompt(prompt).TabComplete(tabcomplete)
exline := &ExLine{
commit: commit,
tabcomplete: tabcomplete,
cmdHistory: &nullHistory{input: input},
input: input,
}
input.OnInvalidate(func(d ui.Drawable) {
exline.Invalidate()
})
return exline
}
func (ex *ExLine) Invalidate() {
ex.DoInvalidate(ex)
}
func (ex *ExLine) Draw(ctx *ui.Context) {
ex.input.Draw(ctx)
}
func (ex *ExLine) Focus(focus bool) {
ex.input.Focus(focus)
}
func (ex *ExLine) Event(event tcell.Event) bool {
switch event := event.(type) {
case *tcell.EventKey:
switch event.Key() {
case tcell.KeyEnter, tcell.KeyCtrlJ:
cmd := ex.input.String()
ex.input.Focus(false)
ex.commit(cmd)
ex.finish()
case tcell.KeyUp:
ex.input.Set(ex.cmdHistory.Prev())
ex.Invalidate()
case tcell.KeyDown:
ex.input.Set(ex.cmdHistory.Next())
ex.Invalidate()
case tcell.KeyEsc, tcell.KeyCtrlC:
ex.input.Focus(false)
ex.cmdHistory.Reset()
ex.finish()
default:
return ex.input.Event(event)
}
}
return true
}
type nullHistory struct {
input *ui.TextInput
}
func (*nullHistory) Add(string) {}
func (h *nullHistory) Next() string {
return h.input.String()
}
func (h *nullHistory) Prev() string {
return h.input.String()
}
func (*nullHistory) Reset() {}