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settings_desktop.go
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/
settings_desktop.go
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//go:build !android && !ios && !mobile
// +build !android,!ios,!mobile
package app
import (
"os"
"path/filepath"
"github.com/fsnotify/fsnotify"
"github.com/qmsu/fyne/v2"
)
func watchFileAddTarget(watcher *fsnotify.Watcher, path string) {
dir := filepath.Dir(path)
ensureDirExists(dir)
err := watcher.Add(dir)
if err != nil {
fyne.LogError("Settings watch error:", err)
}
}
func ensureDirExists(dir string) {
if stat, err := os.Stat(dir); err == nil && stat.IsDir() {
return
}
err := os.MkdirAll(dir, 0700)
if err != nil {
fyne.LogError("Unable to create settings storage:", err)
}
}
func watchFile(path string, callback func()) *fsnotify.Watcher {
watcher, err := fsnotify.NewWatcher()
if err != nil {
fyne.LogError("Failed to watch settings file:", err)
return nil
}
go func() {
for event := range watcher.Events {
if event.Op&fsnotify.Remove != 0 { // if it was deleted then watch again
watcher.Remove(path) // fsnotify returns false positives, see https://github.com/fsnotify/fsnotify/issues/268
watchFileAddTarget(watcher, path)
} else {
callback()
}
}
err = watcher.Close()
if err != nil {
fyne.LogError("Settings un-watch error:", err)
}
}()
watchFileAddTarget(watcher, path)
return watcher
}
func (s *settings) watchSettings() {
s.watcher = watchFile(s.schema.StoragePath(), s.fileChanged)
watchTheme()
}
func (s *settings) stopWatching() {
if s.watcher == nil {
return
}
s.watcher.(*fsnotify.Watcher).Close() // fsnotify returns false positives, see https://github.com/fsnotify/fsnotify/issues/268
}