refactor(core): CORE-16 type display modes and own fullscreen lifetimes

packages/artplayer/src/player/fullscreenWebMix.ts

@@ -0,0 +1,13 @@
+import type { WebFullscreenHost, WebFullscreenProperty } from '../display/types'
+import { webFullscreen } from '../display/web-fullscreen'
+import { def } from '../utils'
+
+export default function fullscreenWebMix(art: WebFullscreenHost): asserts art is WebFullscreenHost & WebFullscreenProperty {
+  const setFullscreen = webFullscreen(art)
+  def(art, 'fullscreenWeb', {
+    get(): boolean {
+      return art.template.$player.classList.contains('art-fullscreen-web')
+    },
+    set: setFullscreen,
+  })
+}