feat: extract player controls timeline keyboard

static/player/keyboard.ts

@@ -0,0 +1,58 @@
+import { state } from './state'
+import { displayTimeFromAbsolute, absoluteTimeFromDisplay, absoluteTimeFromRatio, getBounds } from './timeline'
+import { showControls, toggleMute, togglePlayPause, toggleFullscreen, seekBy, setVolume, formatTime } from './controls'
+
+export const setupKeyboard = (): void => {
+  document.addEventListener('keydown', (e) => {
+    const target = e.target as HTMLElement
+    if (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA' || target.isContentEditable) return
+
+    switch (e.code) {
+      case 'Space':
+      case 'KeyK':
+        e.preventDefault()
+        togglePlayPause()
+        showControls()
+        break
+      case 'ArrowLeft':
+      case 'KeyJ':
+        e.preventDefault()
+        seekBy(-10)
+        break
+      case 'ArrowRight':
+      case 'KeyL':
+        e.preventDefault()
+        seekBy(10)
+        break
+      case 'ArrowUp':
+        e.preventDefault()
+        setVolume(state.video.volume + 0.05)
+        showControls()
+        break
+      case 'ArrowDown':
+        e.preventDefault()
+        setVolume(state.video.volume - 0.05)
+        showControls()
+        break
+      case 'KeyM':
+        e.preventDefault()
+        toggleMute()
+        showControls()
+        break
+      case 'KeyF':
+        e.preventDefault()
+        toggleFullscreen()
+        showControls()
+        break
+      default:
+        if (/^\d$/.test(e.key)) {
+          const b = getBounds()
+          if (b.duration > 0) {
+            e.preventDefault()
+            state.video.currentTime = absoluteTimeFromRatio(parseInt(e.key, 10) / 10)
+            showControls()
+          }
+        }
+    }
+  })
+}