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dirlist: skip unnecessary change-folder action 

when traversing the directory list, aerc will fetch the contents for
every directory even though the user might just move on to the next.
This causes an unnecessary delay (and load on the worker) and can be
avoided by skipping the old change-folder action when a newer one
arrives within a predefined time interval.

Signed-off-by: Koni Marti <koni.marti@gmail.com>
This commit is contained in:
Koni Marti 2022-01-23 10:31:41 +01:00 committed by Robin Jarry
parent eafb537081
commit cb3090956c
1 changed files with 55 additions and 39 deletions
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94
widgets/dirlist.go
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@ -6,6 +6,7 @@ import (
"math"
"regexp"
"sort"
"time"
"github.com/gdamore/tcell/v2"
"github.com/mattn/go-runewidth"
@ -20,27 +21,29 @@ import (
type DirectoryList struct {
ui.Invalidatable
aercConf *config.AercConfig
acctConf *config.AccountConfig
store *lib.DirStore
dirs []string
logger *log.Logger
selecting string
selected string
scroll int
spinner *Spinner
worker *types.Worker
aercConf *config.AercConfig
acctConf *config.AccountConfig
store *lib.DirStore
dirs []string
logger *log.Logger
selecting string
selected string
scroll int
spinner *Spinner
worker *types.Worker
skipSelect chan bool
}
func NewDirectoryList(conf *config.AercConfig, acctConf *config.AccountConfig,
logger *log.Logger, worker *types.Worker) *DirectoryList {
dirlist := &DirectoryList{
aercConf: conf,
acctConf: acctConf,
logger: logger,
store: lib.NewDirStore(),
worker: worker,
aercConf: conf,
acctConf: acctConf,
logger: logger,
store: lib.NewDirStore(),
worker: worker,
skipSelect: make(chan bool),
}
uiConf := dirlist.UiConfig()
dirlist.spinner = NewSpinner(&uiConf)
@ -87,32 +90,45 @@ func (dirlist *DirectoryList) UpdateList(done func(dirs []string)) {
func (dirlist *DirectoryList) Select(name string) {
dirlist.selecting = name
dirlist.worker.PostAction(&types.OpenDirectory{Directory: name},
func(msg types.WorkerMessage) {
switch msg.(type) {
case *types.Error:
dirlist.selecting = ""
case *types.Done:
dirlist.selected = dirlist.selecting
dirlist.filterDirsByFoldersConfig()
hasSelected := false
for _, d := range dirlist.dirs {
if d == dirlist.selected {
hasSelected = true
break
close(dirlist.skipSelect)
dirlist.skipSelect = make(chan bool)
go func() {
select {
case <-time.After(1 * time.Second):
dirlist.worker.PostAction(&types.OpenDirectory{Directory: name},
func(msg types.WorkerMessage) {
switch msg.(type) {
case *types.Error:
dirlist.selecting = ""
dirlist.selected = ""
case *types.Done:
dirlist.selected = dirlist.selecting
dirlist.filterDirsByFoldersConfig()
hasSelected := false
for _, d := range dirlist.dirs {
if d == dirlist.selected {
hasSelected = true
break
}
}
if !hasSelected && dirlist.selected != "" {
dirlist.dirs = append(dirlist.dirs, dirlist.selected)
}
if dirlist.acctConf.EnableFoldersSort {
sort.Strings(dirlist.dirs)
}
dirlist.sortDirsByFoldersSortConfig()
}
}
if !hasSelected && dirlist.selected != "" {
dirlist.dirs = append(dirlist.dirs, dirlist.selected)
}
if dirlist.acctConf.EnableFoldersSort {
sort.Strings(dirlist.dirs)
}
dirlist.sortDirsByFoldersSortConfig()
}
dirlist.Invalidate()
})
dirlist.Invalidate()
})
dirlist.Invalidate()
case <-dirlist.skipSelect:
dirlist.logger.Println("dirlist: skip", name)
return
}
}()
}
func (dirlist *DirectoryList) Selected() string {