Add enqueue option to router dialog

- This allows users to enqueue a stream directly to the current player queue when sharing a link with the app, improving the user experience for queue management.
- The 'Enqueue' option is now available in the action selection dialog and can also be set as the preferred open action in the settings.

app/src/main/java/org/schabi/newpipe/RouterActivity.java

@@ -316,7 +316,8 @@ public class RouterActivity extends AppCompatActivity {
         if (choiceChecker.isAvailableAndSelected(
                 R.string.video_player_key,
                 R.string.background_player_key,
-                R.string.popup_player_key)) {
+                R.string.popup_player_key,
+                R.string.enqueue_key)) {
 
             final String selectedChoice = choiceChecker.getSelectedChoiceKey();
 
@@ -329,6 +330,8 @@ public class RouterActivity extends AppCompatActivity {
                             || selectedChoice.equals(getString(R.string.popup_player_key));
             final boolean isAudioPlayerSelected =
                     selectedChoice.equals(getString(R.string.background_player_key));
+            final boolean isEnqueueSelected =
+                    selectedChoice.equals(getString(R.string.enqueue_key));
 
             if (currentLinkType != LinkType.STREAM
                     && ((isExtAudioEnabled && isAudioPlayerSelected)
@@ -345,7 +348,9 @@ public class RouterActivity extends AppCompatActivity {
 
             // Check if the service supports the choice
             if ((isVideoPlayerSelected && capabilities.contains(VIDEO))
-                    || (isAudioPlayerSelected && capabilities.contains(AUDIO))) {
+                    || (isAudioPlayerSelected && capabilities.contains(AUDIO))
+                    || (isEnqueueSelected && (capabilities.contains(VIDEO)
+                    || capabilities.contains(AUDIO)))) {
                 handleChoice(selectedChoice);
             } else {
                 handleChoice(getString(R.string.show_info_key));
@@ -544,7 +549,10 @@ public class RouterActivity extends AppCompatActivity {
             // not be added to a playlist
             returnedItems.add(new AdapterChoiceItem(getString(R.string.add_to_playlist_key),
                     getString(R.string.add_to_playlist),
-                    R.drawable.ic_add));
+                    R.drawable.ic_playlist_add));
+
+            returnedItems.add(new AdapterChoiceItem(getString(R.string.enqueue_key),
+                    getString(R.string.enqueue_stream), R.drawable.ic_add));
         } else {
             // LinkType.NONE is never present because it's filtered out before
             // channels and playlist can be played as they contain a list of videos
@@ -1016,6 +1024,8 @@ public class RouterActivity extends AppCompatActivity {
                     NavigationHelper.playOnBackgroundPlayer(this, playQueue, true);
                 } else if (choice.playerChoice.equals(popupPlayerKey)) {
                     NavigationHelper.playOnPopupPlayer(this, playQueue, true);
+                } else if (choice.playerChoice.equals(getString(R.string.enqueue_key))) {
+                    NavigationHelper.enqueueOnPlayer(this, playQueue);
                 }
             };
         }

app/src/main/res/values/settings_keys.xml

@@ -479,6 +479,7 @@
     <string name="popup_player_key">popup_player</string>
     <string name="download_key">download</string>
     <string name="add_to_playlist_key">add_to_playlist</string>
+    <string name="enqueue_key">enqueue</string>
     <string name="always_ask_open_action_key">always_ask_player</string>
 
     <string-array name="preferred_open_action_description_list">
@@ -488,6 +489,7 @@
         <item>@string/popup_player</item>
         <item>@string/download</item>
         <item>@string/add_to_playlist</item>
+        <item>@string/enqueue_stream</item>
         <item>@string/always_ask_open_action</item>
     </string-array>
     <string-array name="preferred_open_action_values_list">
@@ -498,6 +500,7 @@
         <item>@string/download_key</item>
         <item>@string/add_to_playlist_key</item>
         <item>@string/always_ask_open_action_key</item>
+        <item>@string/enqueue_key</item>
     </string-array>
 
     <!-- Updates -->