Remove MediaSessionAction[Details] enum/dict from MDN

files/en-us/_redirects.txt

@@ -7964,6 +7964,12 @@
 /en-US/docs/Web/API/MediaRecorder/canRecordMimeType	/en-US/docs/Web/API/MediaRecorder/isTypeSupported
 /en-US/docs/Web/API/MediaRecorder_API	/en-US/docs/Web/API/MediaStream_Recording_API
 /en-US/docs/Web/API/MediaRecorder_API/Using_the_MediaRecorder_API	/en-US/docs/Web/API/MediaStream_Recording_API/Using_the_MediaStream_Recording_API
+/en-US/docs/Web/API/MediaSessionAction	/en-US/docs/Web/API/MediaSession/setActionHandler
+/en-US/docs/Web/API/MediaSessionActionDetails	/en-US/docs/Web/API/MediaSession/setActionHandler
+/en-US/docs/Web/API/MediaSessionActionDetails/action	/en-US/docs/Web/API/MediaSession/setActionHandler
+/en-US/docs/Web/API/MediaSessionActionDetails/fastSeek	/en-US/docs/Web/API/MediaSession/setActionHandler
+/en-US/docs/Web/API/MediaSessionActionDetails/seekOffset	/en-US/docs/Web/API/MediaSession/setActionHandler
+/en-US/docs/Web/API/MediaSessionActionDetails/seekTime	/en-US/docs/Web/API/MediaSession/setActionHandler
 /en-US/docs/Web/API/MediaSettingsRange	/en-US/docs/Web/API/ImageCapture/getPhotoCapabilities
 /en-US/docs/Web/API/MediaSettingsRange/max	/en-US/docs/Web/API/ImageCapture/getPhotoCapabilities
 /en-US/docs/Web/API/MediaSettingsRange/min	/en-US/docs/Web/API/ImageCapture/getPhotoCapabilities

files/en-us/_wikihistory.json

@@ -59222,44 +59222,6 @@
       "Sheppy"
     ]
   },
-  "Web/API/MediaSessionAction": {
-    "modified": "2020-10-15T22:32:38.938Z",
-    "contributors": [
-      "chrisdavidmills",
-      "Sheppy"
-    ]
-  },
-  "Web/API/MediaSessionActionDetails": {
-    "modified": "2020-10-15T22:29:13.391Z",
-    "contributors": [
-      "chrisdavidmills",
-      "Sheppy"
-    ]
-  },
-  "Web/API/MediaSessionActionDetails/action": {
-    "modified": "2020-10-15T22:29:15.064Z",
-    "contributors": [
-      "Sheppy"
-    ]
-  },
-  "Web/API/MediaSessionActionDetails/fastSeek": {
-    "modified": "2020-10-15T22:29:15.752Z",
-    "contributors": [
-      "Sheppy"
-    ]
-  },
-  "Web/API/MediaSessionActionDetails/seekOffset": {
-    "modified": "2020-10-15T22:29:15.264Z",
-    "contributors": [
-      "Sheppy"
-    ]
-  },
-  "Web/API/MediaSessionActionDetails/seekTime": {
-    "modified": "2020-10-15T22:29:15.353Z",
-    "contributors": [
-      "Sheppy"
-    ]
-  },
   "Web/API/MediaSource": {
     "modified": "2020-10-15T21:24:31.806Z",
     "contributors": [

files/en-us/web/api/media_session_api/index.md

@@ -44,8 +44,6 @@ navigator.mediaSession.playbackState = "playing";
 
 - {{domxref("MediaImage")}}
   - : A `MediaImage` object contains information describing an image associated with the media. This might be a CD or DVD cover, a movie poster, a poster frame, or the like.
-- {{domxref("MediaSessionActionDetails")}}
-  - : Provides information needed in order to perform the action that has been requested, including the type of action to perform and any other information needed, such as seek distances or times.
 
 ## Examples
 

files/en-us/web/api/mediasession/index.md

@@ -28,7 +28,7 @@ For example, a smartphone might have a standard panel in its lock screen that pr
 ## Methods
 
 - {{domxref("MediaSession.setActionHandler", "setActionHandler()")}}
-  - : Sets an action handler for a [media session action](/en-US/docs/Web/API/MediaSessionAction), such as play or pause.
+  - : Sets an action handler for a media session action, such as play or pause.
 - {{domxref("MediaSession.setPositionState", "setPositionState()")}}
   - : Sets the current playback position and speed of the media currently being presented.
 

files/en-us/web/api/mediasession/setactionhandler/index.md

@@ -16,10 +16,8 @@ browser-compat: api.MediaSession.setActionHandler
 ---
 {{APIRef("Media Session API")}}
 
-The **`setActionHandler()`** method of the
-{{domxref("MediaSession")}} interface sets a handler for a media session action. These
-actions let a web app receive notifications when the user engages a device's built-in
-physical or onscreen media controls, such as play, stop, or seek buttons.
+The **`setActionHandler()`** method of the {{domxref("MediaSession")}} interface sets a handler for a media session action.
+These actions let a web app receive notifications when the user engages a device's built-in physical or onscreen media controls, such as play, stop, or seek buttons.
 
 ## Syntax
 
@@ -31,33 +29,59 @@ navigator.mediaSession.setActionHandler(type, callback)
 
 - `type`
   - : A {{domxref("DOMString")}} representing an action type to listen for. It will be one
-    of `{{anch("play")}}`,
-    `{{anch("pause")}}`, `{{anch("stop")}}`,
-    `{{anch("seekbackward")}}`, `{{anch("seekforward")}}`, `{{anch("seekto")}}`, `{{anch("skipad")}}`,`{{anch("previoustrack")}}`,
-    or `{{anch("nexttrack")}}`. Further details on the action types can be
-    found below under {{anch("Media session actions")}}.
+    of the following:
+    - `nexttrack`
+      - : Advances playback to the next track.
+    - `pause`
+      - : Pauses playback of the media.
+    - `play`
+      - : Begins (or resumes) playback of the media.
+    - `previoustrack`
+      - : Moves back to the previous track.
+    - `seekbackward`
+      - : Seeks backward through the media from the current position.
+        The `seekOffset` property passed to the callback specifies the amount of time to seek backward.
+    - `seekforward`
+      - : Seeks forward from the current position through the media.
+        The `seekOffset` property passed to the callback specifies the amount of time to seek forward.
+    - `seekto`
+      - : Moves the playback position to the specified time within the media.
+        The time to which to seek is specified in the `seekTime` property passed to the callback.
+        If you intend to perform multiple `seekto` operations in rapid succession, you can also specify the `fastSeek` property passed to the callback with a value of `true`. 
+        This lets the browser know it can take steps to optimize repeated operations, and is likely to result in improved performance.
+    - `skipad`
+      - : Skips past the currently playing advertisement or commercial.
+        This action may or may not be available, depending on the platform and {{Glossary("user agent")}}, or may be disabled due to subscription level or other circumstances.
+    - `stop`
+      - : Halts playback entirely.
 - `callback`
-  - : A function to call when the specified action type is invoked. The callback receives
-    no input parameters, and should not return a value.
+  - : A function to call when the specified action type is invoked. The callback should not return a value. The callback receives a dictionary containing the following properties:
+    - `action`
+      - : A {{domxref("DOMString")}} representing the action type. This property allows a single callback to handle multiple action types.
+    - `fastSeek` {{optional_inline}}
+      - : An `{{anch("seekto")}}` action may *optionally* include this property, which is a Boolean value indicating whether or not to perform a "fast" seek.
+        A "fast" seek is a seek being performed in a rapid sequence, such as when fast-forwarding or reversing through the media, rapidly skipping through it.
+        This property can be used to indicate that you should use the shortest possible method to seek the media.
+        `fastSeek` is not included on the final action in the seek sequence in this situation.
+    - `seekOffset` {{optional_inline}}
+      - : If the `action` is either `{{anch("seekforward")}}` or `{{anch("seekbackward")}}` and this property is present, it is a floating point value which indicates the number of seconds to move the play position forward or backward.
+        If this property isn't present, those actions should choose a reasonable default distance to skip forward or backward (such as 7 or 10 seconds).
+    - `seekTime` {{optional_inline}}
+      - : If the `action` is `{{anch("seekto")}}`, this property must be present and must be a floating-point value indicating the absolute time within the media to move the playback position to, where 0 indicates the beginning of the media. This property is not present for other action types.
 
 ### Return value
 
 `undefined`.
 
 ## Description
 
-To remove a previously-established action handler, call `setActionHandler()`
-again, specifying `null` as the `callback`.
+To remove a previously-established action handler, call `setActionHandler()` again, specifying `null` as the `callback`.
 
-The action handler receives as input a single parameter: an object conforming to
-the {{domxref("MediaSessionActionDetails")}} dictionary, which provides both the action
-type (so the same function can handle multiple action types), as well as data needed in
-order to perform the action.
+The action handler receives as input a single parameter: an object which provides both the action type (so the same function can handle multiple action types), as well as data needed in order to perform the action.
 
 ## Examples
 
-This example creates a new media session and assigns action handlers (which don't do
-anything) to it.
+This example creates a new media session and assigns action handlers (which don't do anything) to it.
 
 ```js
 if ('mediaSession' in navigator) {
@@ -87,8 +111,7 @@ if ('mediaSession' in navigator) {
 }
 ```
 
-The following example sets up two functions for playing and pausing, then uses them as
-callbacks with the relevant action handlers.
+The following example sets up two functions for playing and pausing, then uses them as callbacks with the relevant action handlers.
 
 ```js
 const actionHandlers = [
@@ -126,8 +149,7 @@ for (const [action, handler] of actionHandlers) {
 }
 ```
 
-This example uses appropriate action handlers to allow seeking in either direction
-through the playing media.
+This example uses appropriate action handlers to allow seeking in either direction through the playing media.
 
 ```js
 let skipTime = 10; // Time to skip in seconds
@@ -152,9 +174,7 @@ navigator.mediaSession.setActionHandler('nexttrack', null);
 
 ### Supporting multiple actions in one handler function
 
-You can also, if you prefer, use a single function to handle multiple action types, by
-checking the value of the `MediaSessionActionDetails` object's
-{{domxref("MediaSessionActionDetails.action", "action")}} property:
+You can also, if you prefer, use a single function to handle multiple action types, by checking the value of the `action` property:
 
 ```js
 let skipTime = 7;
@@ -175,8 +195,7 @@ function handleSeek(details) {
 }
 ```
 
-Here, the `handleSeek()` function handles
-both `seekbackward` and `seekforward` actions.
+Here, the `handleSeek()` function handles both `seekbackward` and `seekforward` actions.
 
 ## Specifications