rewrite using IoC and DI

controller/core/lyric.go

@@ -0,0 +1,56 @@
+package core
+
+import (
+	"AynaLivePlayer/common/event"
+	"AynaLivePlayer/model"
+)
+
+type LyricLoader struct {
+	Lyric   *model.Lyric
+	Handler *event.Manager
+	prev    float64
+}
+
+func NewLyricLoader() *LyricLoader {
+	return &LyricLoader{
+		Lyric:   model.LoadLyric(""),
+		Handler: event.MainManager.NewChildManager(),
+		prev:    -1,
+	}
+}
+
+func (l *LyricLoader) EventManager() *event.Manager {
+	return l.Handler
+}
+
+func (l *LyricLoader) Get() *model.Lyric {
+	return l.Lyric
+}
+
+func (l *LyricLoader) Reload(lyric string) {
+	l.Lyric = model.LoadLyric(lyric)
+	l.Handler.CallA(
+		model.EventLyricReload,
+		model.LyricReloadEvent{
+			Lyrics: l.Lyric,
+		})
+}
+
+func (l *LyricLoader) Update(time float64) {
+	lrc := l.Lyric.Find(time)
+	if lrc == nil {
+		return
+	}
+	if l.prev == lrc.Time {
+		return
+	}
+	l.prev = lrc.Time
+	l.Handler.CallA(
+		model.EventLyricUpdate,
+		model.LyricUpdateEvent{
+			Lyrics: l.Lyric,
+			Time:   time,
+			Lyric:  lrc,
+		})
+	return
+}