aerc/widgets/directories.go

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2019-01-13 19:25:46 +00:00
package widgets
import (
"log"
"sort"
"github.com/gdamore/tcell"
"git.sr.ht/~sircmpwn/aerc2/lib/ui"
"git.sr.ht/~sircmpwn/aerc2/worker/types"
)
type DirectoryList struct {
dirs []string
logger *log.Logger
onInvalidate func(d ui.Drawable)
worker *types.Worker
}
func NewDirectoryList(logger *log.Logger, worker *types.Worker) *DirectoryList {
return &DirectoryList{logger: logger, worker: worker}
}
func (dirlist *DirectoryList) UpdateList() {
var dirs []string
dirlist.worker.PostAction(
&types.ListDirectories{}, func(msg types.WorkerMessage) {
switch msg := msg.(type) {
case *types.Directory:
dirs = append(dirs, msg.Name)
case *types.Done:
sort.Strings(dirs)
dirlist.dirs = dirs
dirlist.Invalidate()
}
})
}
func (dirlist *DirectoryList) OnInvalidate(onInvalidate func(d ui.Drawable)) {
dirlist.onInvalidate = onInvalidate
}
func (dirlist *DirectoryList) Invalidate() {
if dirlist.onInvalidate != nil {
dirlist.onInvalidate(dirlist)
}
}
func (dirlist *DirectoryList) Draw(ctx *ui.Context) {
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault)
for i, name := range dirlist.dirs {
if i >= ctx.Height() {
break
}
ctx.Printf(0, i, tcell.StyleDefault, "%s", name)
}
}