Add DBUS support for media keys

src/media_keys/media_keys.h

@@ -1,5 +1,5 @@
 #pragma once
-
+#include <easylogging++.h>
 #include <vector>
 #include <QString>
 

src/media_keys/media_keys_dbus.cpp

@@ -0,0 +1,59 @@
+#include "media_keys.h"
+#include <QtCore/QCoreApplication>
+#include <QtCore/QDebug>
+#include <QtCore/QStringList>
+#include <QtDBus/QtDBus>
+
+namespace keyboardinput
+{
+void callMethodForAllMediaPlayerAvailableServices( const QString& method )
+{
+    if ( !QDBusConnection::sessionBus().isConnected() )
+    {
+        LOG( ERROR ) << "Media Keys: Unable to connect to DBUS session bus.";
+        return;
+    }
+
+    QDBusReply<QStringList> names
+        = QDBusConnection::sessionBus().interface()->registeredServiceNames();
+    if ( !names.isValid() )
+    {
+        LOG( ERROR )
+            << "Media Keys: Error getting DBUS registered service names:";
+        LOG( ERROR ) << names.error().message();
+    }
+
+    foreach ( QString name, names.value() )
+    {
+        if ( name.contains( "org.mpris.MediaPlayer2" ) )
+        {
+            QDBusInterface iface( name,
+                                  "/org/mpris/MediaPlayer2",
+                                  "org.mpris.MediaPlayer2.Player",
+                                  QDBusConnection::sessionBus() );
+            iface.call( method );
+        }
+    }
+}
+
+void sendMediaNextSong()
+{
+    callMethodForAllMediaPlayerAvailableServices( "Next" );
+}
+
+void sendMediaPreviousSong()
+{
+    callMethodForAllMediaPlayerAvailableServices( "Previous" );
+}
+
+void sendMediaPausePlay()
+{
+    callMethodForAllMediaPlayerAvailableServices( "PlayPause" );
+}
+
+void sendMediaStopSong()
+{
+    callMethodForAllMediaPlayerAvailableServices( "Stop" );
+}
+
+} // namespace keyboardinput