MainWindow: Add error dialog when file deletion fails

Fixes #1384

src/core/mainwindow.cpp

@@ -204,6 +204,8 @@
 
 #include "smartplaylists/smartplaylistsviewcontainer.h"
 
+#include "organize/organizeerrordialog.h"
+
 #ifdef Q_OS_WIN
 #  include "windows7thumbbar.h"
 #endif
@@ -3239,11 +3241,21 @@ void MainWindow::PlaylistDelete() {
 
   SharedPtr<MusicStorage> storage = make_shared<FilesystemMusicStorage>(Song::Source::LocalFile, "/");
   DeleteFiles *delete_files = new DeleteFiles(app_->task_manager(), storage, true);
-  //QObject::connect(delete_files, &DeleteFiles::Finished, this, &MainWindow::DeleteFinished);
+  QObject::connect(delete_files, &DeleteFiles::Finished, this, &MainWindow::DeleteFilesFinished);
   delete_files->Start(selected_songs);
 
 }
 
+void MainWindow::DeleteFilesFinished(const SongList &songs_with_errors) {
+
+  if (songs_with_errors.isEmpty()) return;
+
+  OrganizeErrorDialog *dialog = new OrganizeErrorDialog(this);
+  dialog->Show(OrganizeErrorDialog::OperationType::Delete, songs_with_errors);
+  // It deletes itself when the user closes it
+
+}
+
 void MainWindow::FocusSearchField() {
 
   if (ui_->tabs->currentIndex() == ui_->tabs->IndexOfTab(collection_view_) && !collection_view_->filter_widget()->SearchFieldHasFocus()) {

src/core/mainwindow.h

@@ -270,6 +270,8 @@ class MainWindow : public QMainWindow, public PlatformInterface {
 
   void FocusSearchField();
 
+  void DeleteFilesFinished(const SongList &songs_with_errors);
+
  public slots:
   void CommandlineOptionsReceived(const QByteArray &string_options);
   void Raise();