cloudfileservices: Common rescan confirmation dialog

Move Google Drive's rescan confirmation dialog to CloudFileService for
reuse.

src/internet/core/cloudfileservice.cpp

@@ -21,6 +21,8 @@
 #include "internet/core/cloudfileservice.h"
 
 #include <QMenu>
+#include <QMessageBox>
+#include <QPushButton>
 #include <QSortFilterProxyModel>
 
 #include "core/application.h"
@@ -243,3 +245,21 @@ void CloudFileService::AbortReadTagsReplies() {
   indexing_task_id_ = -1;
   emit AllIndexingTasksFinished();
 }
+
+void CloudFileService::FullRescanRequested() {
+  QMessageBox* message_box = new QMessageBox(
+      QMessageBox::Warning, tr("Do a full rescan"),
+      tr("Doing a full rescan will lose any metadata you've saved in "
+         "Clementine such as cover art, play counts and ratings.  Clementine "
+         "will rescan all your music in %1 which may take some "
+         "time.")
+          .arg(name()),
+      QMessageBox::NoButton);
+  QPushButton* button = message_box->addButton(tr("Do a full rescan"),
+                                               QMessageBox::DestructiveRole);
+  connect(button, SIGNAL(clicked()), SLOT(DoFullRescan()));
+
+  message_box->addButton(QMessageBox::Cancel);
+  message_box->setAttribute(Qt::WA_DeleteOnClose);
+  message_box->show();
+}

src/internet/core/cloudfileservice.h

@@ -72,6 +72,8 @@ class CloudFileService : public InternetService {
   void AddToPlaylist(QMimeData* mime);
   void ReadTagsFinished(TagReaderClient::ReplyType* reply,
                         const Song& metadata);
+  void FullRescanRequested();
+  virtual void DoFullRescan() {}
 
  protected:
   QStandardItem* root_;

src/internet/googledrive/googledriveservice.cpp

@@ -22,8 +22,6 @@
 #include <QDesktopServices>
 #include <QEventLoop>
 #include <QMenu>
-#include <QMessageBox>
-#include <QPushButton>
 #include <QScopedPointer>
 #include <QSortFilterProxyModel>
 #include <QUrlQuery>
@@ -225,7 +223,7 @@ void GoogleDriveService::ShowContextMenu(const QPoint& global_pos) {
         tr("Check for updates"), this, SLOT(CheckForUpdates()));
     full_rescan_action_ = context_menu_->addAction(
         IconLoader::Load("view-refresh", IconLoader::Base),
-        tr("Do a full rescan..."), this, SLOT(ConfirmFullRescan()));
+        tr("Do a full rescan..."), this, SLOT(FullRescanRequested()));
     context_menu_->addSeparator();
     context_menu_->addAction(IconLoader::Load("download", IconLoader::Base),
                              tr("Cover Manager"), this,
@@ -268,23 +266,6 @@ void GoogleDriveService::OpenWithDrive() {
   }
 }
 
-void GoogleDriveService::ConfirmFullRescan() {
-  QMessageBox* message_box = new QMessageBox(
-      QMessageBox::Warning, tr("Do a full rescan"),
-      tr("Doing a full rescan will lose any metadata you've saved in "
-         "Clementine such as cover art, play counts and ratings.  Clementine "
-         "will rescan all your music in Google Drive which may take some "
-         "time."),
-      QMessageBox::NoButton);
-  QPushButton* button = message_box->addButton(tr("Do a full rescan"),
-                                               QMessageBox::DestructiveRole);
-  connect(button, SIGNAL(clicked()), SLOT(DoFullRescan()));
-
-  message_box->addButton(QMessageBox::Cancel);
-  message_box->setAttribute(Qt::WA_DeleteOnClose);
-  message_box->show();
-}
-
 void GoogleDriveService::DoFullRescan() {
   QSettings s;
   s.beginGroup(kSettingsGroup);

src/internet/googledrive/googledriveservice.h

@@ -62,8 +62,7 @@ class GoogleDriveService : public CloudFileService {
   void SaveCursor(const QString& cursor);
 
   void OpenWithDrive();
-  void ConfirmFullRescan();
-  void DoFullRescan();
+  void DoFullRescan() override;
   void CheckForUpdates();
 
  private: