优化我的列表、下载、歌单、排行榜列表性能

src/renderer/utils/data.js

@@ -0,0 +1,45 @@
+import { rendererSend, rendererInvoke, NAMES } from '../../common/ipc'
+import { throttle } from './index'
+
+let listPosition = {}
+let listPrevSelectId
+
+const saveListPosition = throttle(() => {
+  rendererSend(NAMES.mainWindow.save_data, {
+    path: 'listPosition',
+    data: listPosition,
+  })
+}, 1000)
+
+export const initListPosition = () => {
+  return rendererInvoke(NAMES.mainWindow.get_data, 'listPosition').then(data => {
+    if (!data) data = {}
+    listPosition = data
+  })
+}
+export const getListPosition = id => listPosition[id] || 0
+export const setListPosition = (id, position) => {
+  listPosition[id] = position || 0
+  saveListPosition()
+}
+export const removeListPosition = id => {
+  delete listPosition[id]
+  saveListPosition()
+}
+
+const saveListPrevSelectId = throttle(() => {
+  rendererSend(NAMES.mainWindow.save_data, {
+    path: 'listPrevSelectId',
+    data: listPrevSelectId,
+  })
+}, 200)
+export const initListPrevSelectId = () => {
+  return rendererInvoke(NAMES.mainWindow.get_data, 'listPrevSelectId').then(id => {
+    listPrevSelectId = id
+  })
+}
+export const getListPrevSelectId = () => listPrevSelectId
+export const setListPrevSelectId = id => {
+  listPrevSelectId = id
+  saveListPrevSelectId()
+}