Added option to disable playlist clear button

Fixes #339

src/playlist/playlistcontainer.cpp

@@ -118,6 +118,8 @@ PlaylistContainer::PlaylistContainer(QWidget *parent)
   connect(ui_->playlist, SIGNAL(FocusOnFilterSignal(QKeyEvent*)), SLOT(FocusOnFilter(QKeyEvent*)));
   ui_->filter->installEventFilter(this);
 
+  ReloadSettings();
+
 }
 
 PlaylistContainer::~PlaylistContainer() { delete ui_; }
@@ -225,6 +227,18 @@ void PlaylistContainer::SetViewModel(Playlist *playlist) {
 
 }
 
+void PlaylistContainer::ReloadSettings() {
+
+  bool playlist_clear = settings_.value("playlist_clear", true).toBool();
+  if (playlist_clear) {
+    ui_->clear->show();
+  }
+  else {
+    ui_->clear->hide();
+  }
+
+}
+
 void PlaylistContainer::ActivePlaying() {
   UpdateActiveIcon(QIcon(":/pictures/tiny-play.png"));
 }