From ba76cbb860468ec07a86856654d6e1ba007a8dcb Mon Sep 17 00:00:00 2001
From: Matthew G <26392564+gmatas@users.noreply.github.com>
Date: Thu, 5 Jan 2023 20:00:14 +0200
Subject: [PATCH] Add `current_time` attribute to `Audio` widget.

---
 packages/controls/src/widget_audio.ts         |  2 ++
 .../ipywidgets/widgets/widget_media.py        | 21 ++++++++++++++++---
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/packages/controls/src/widget_audio.ts b/packages/controls/src/widget_audio.ts
index c7f19f78b3..8215c56aeb 100644
--- a/packages/controls/src/widget_audio.ts
+++ b/packages/controls/src/widget_audio.ts
@@ -15,6 +15,7 @@ export class AudioModel extends CoreDOMWidgetModel {
       autoplay: true,
       loop: true,
       controls: true,
+      current_time: 0,
       value: new DataView(new ArrayBuffer(0)),
     };
   }
@@ -70,6 +71,7 @@ export class AudioView extends DOMWidgetView {
     this.el.loop = this.model.get('loop');
     this.el.autoplay = this.model.get('autoplay');
     this.el.controls = this.model.get('controls');
+    this.el.currentTime = this.model.get('current_time');
 
     return super.update();
   }
diff --git a/python/ipywidgets/ipywidgets/widgets/widget_media.py b/python/ipywidgets/ipywidgets/widgets/widget_media.py
index 55b656b603..0c06158b8d 100644
--- a/python/ipywidgets/ipywidgets/widgets/widget_media.py
+++ b/python/ipywidgets/ipywidgets/widgets/widget_media.py
@@ -3,12 +3,13 @@
 
 import mimetypes
 
-from .widget_core import CoreWidget
+from traitlets import Bool, CUnicode, Int, TraitError, Unicode, validate
+
 from .domwidget import DOMWidget
+from .trait_types import CByteMemoryView
 from .valuewidget import ValueWidget
 from .widget import register
-from traitlets import Unicode, CUnicode, Bool
-from .trait_types import CByteMemoryView
+from .widget_core import CoreWidget
 
 
 @register
@@ -215,6 +216,10 @@ class Audio(_Media):
     autoplay = Bool(True, help="When true, the audio starts when it's displayed").tag(sync=True)
     loop = Bool(True, help="When true, the audio will start from the beginning after finishing").tag(sync=True)
     controls = Bool(True, help="Specifies that audio controls should be displayed (such as a play/pause button etc)").tag(sync=True)
+    current_time = Int(
+        allow_none=True,
+        help="The current_time property sets or returns the current position (in seconds) of the audio/video playback."
+    ).tag(sync=True)
 
     @classmethod
     def from_file(cls, filename, **kwargs):
@@ -222,3 +227,13 @@ def from_file(cls, filename, **kwargs):
 
     def __repr__(self):
         return self._get_repr(Audio)
+
+    @validate("current_time")
+    def _validate_current_time(self, proposal):
+        """Validate that current_time >= 0.
+        """
+        current_time = proposal["value"] or 0
+        if current_time < 0:
+            raise TraitError("Current time property must be greater than 0.")
+
+        return current_time