分离播放器功能

src/player/playbackRateMix.js

@@ -0,0 +1,25 @@
+import { clamp, sublings } from '../utils';
+
+export default function playbackRateMix(art, player) {
+  Object.defineProperty(player, 'playbackRate', {
+    value: rate => {
+      const { refs: { $video, $player }, i18n, notice } = art;
+      const newRate = clamp(rate, 0.1, 10);
+      $video.playbackRate = newRate;
+      $player.dataset.playbackRate = newRate;
+      notice.show(`${i18n.get('Rate')}: ${newRate === 1 ? i18n.get('Normal') : `${newRate}x`}`);
+      art.emit('playbackRate', newRate);
+    }
+  });
+
+  Object.defineProperty(player, 'removePlaybackRate', {
+    value: () => {
+      const { contextmenu: { $playbackRate } } = art;
+      if ($playbackRate) {
+        const $normal = $playbackRate.querySelector('.normal');
+        sublings($normal).forEach(item => item.classList.remove('current'));
+        $normal.classList.add('current');
+      }
+    }
+  });
+}