Allow to open directories directly

data/music.desktop.in

@@ -7,7 +7,7 @@ Exec=io.elementary.music %U
 Icon=io.elementary.music
 Terminal=false
 Categories=Audio;Music;Player;AudioVideo;GTK;
-MimeType=x-content/audio-player;x-content/audio-cdda;application/ogg;application/x-extension-m4a;application/x-extension-mp4;application/x-flac;application/x-ogg;audio/3gpp;audio/aac;audio/ac3;audio/AMR;audio/AMR-WB;audio/basic;audio/flac;audio/midi;audio/mp2;audio/mp4;audio/mpeg;audio/ogg;audio/vnd.rn-realaudio;audio/x-aiff;audio/x-ape;audio/x-flac;audio/x-gsm;audio/x-it;audio/x-m4a;audio/x-matroska;audio/x-mod;audio/x-mp3;audio/x-mpeg;audio/x-mpegurl;audio/x-ms-asf;audio/x-ms-asx;audio/x-ms-wax;audio/x-ms-wma;audio/x-musepack;audio/x-opus+ogg;audio/x-pn-aiff;audio/x-pn-au;audio/x-pn-realaudio;audio/x-pn-realaudio-plugin;audio/x-pn-wav;audio/x-pn-windows-acm;audio/x-realaudio;audio/x-real-audio;audio/x-sbc;audio/x-scpls;audio/x-speex;audio/x-tta;audio/x-vorbis;audio/x-vorbis+ogg;audio/x-wav;audio/x-wavpack;audio/x-xm;audio/x-s3m;
+MimeType=x-content/audio-player;x-content/audio-cdda;application/ogg;application/x-extension-m4a;application/x-extension-mp4;application/x-flac;application/x-ogg;audio/3gpp;audio/aac;audio/ac3;audio/AMR;audio/AMR-WB;audio/basic;audio/flac;audio/midi;audio/mp2;audio/mp4;audio/mpeg;audio/ogg;audio/vnd.rn-realaudio;audio/x-aiff;audio/x-ape;audio/x-flac;audio/x-gsm;audio/x-it;audio/x-m4a;audio/x-matroska;audio/x-mod;audio/x-mp3;audio/x-mpeg;audio/x-mpegurl;audio/x-ms-asf;audio/x-ms-asx;audio/x-ms-wax;audio/x-ms-wma;audio/x-musepack;audio/x-opus+ogg;audio/x-pn-aiff;audio/x-pn-au;audio/x-pn-realaudio;audio/x-pn-realaudio-plugin;audio/x-pn-wav;audio/x-pn-windows-acm;audio/x-realaudio;audio/x-real-audio;audio/x-sbc;audio/x-scpls;audio/x-speex;audio/x-tta;audio/x-vorbis;audio/x-vorbis+ogg;audio/x-wav;audio/x-wavpack;audio/x-xm;audio/x-s3m;inode/directory;
 StartupNotify=true
 Keywords=Noise;Audio;Player;MP3;Play;Playlist;Media;Songs;
 X-GNOME-UsesNotifications=true

src/Application.vala

@@ -103,12 +103,54 @@ public class Music.Application : Gtk.Application {
         settings.bind ("window-maximized", main_window, "maximized", SettingsBindFlags.SET);
     }
 
+    File[] listDirectory(string directory) {
+        var dir = Dir.open(directory, 0);
+
+        string? name = null;
+        File[] elements = {};
+
+        while((name = dir.read_name ()) != null) {
+            string filePath = Path.build_filename (directory, name);
+            File file = File.new_for_path(filePath);
+
+            elements += file;
+        }
+
+        return elements;
+    }
+
+    private bool isDirectory(string file) {
+        return FileUtils.test(file, FileTest.IS_DIR);
+    }
+
+    private void loopThroughFiles(File[] files) {
+        // All of these are added later in bulk
+        File[] elements = {};
+
+        foreach (var file in files) {
+            var filePath = file.get_path();
+            var isDirectory = isDirectory(filePath);
+
+            if (!isDirectory) {
+                elements += file;
+
+                continue;
+            }
+
+            // Is a directory
+            var directoryElements = listDirectory(filePath);
+            loopThroughFiles(directoryElements);
+        }
+
+        playback_manager.queue_files (elements);
+    }
+
     protected override void open (File[] files, string hint) {
         if (active_window == null) {
             activate ();
         }
 
-        playback_manager.queue_files (files);
+        loopThroughFiles(files);
     }
 
     private void action_play_pause () {