Port DeviceManager to enum class

src/device/devicemanager.cpp

@@ -326,12 +326,12 @@ QVariant DeviceManager::data(const QModelIndex &idx, int role) const {
       return ((device_info->BestBackend() && device_info->BestBackend()->lister_) ? device_info->BestBackend()->lister_->DeviceFreeSpace(device_info->BestBackend()->unique_id_) : QVariant());
 
     case Role_State:
-      if (device_info->device_) return State_Connected;
+      if (device_info->device_) return QVariant::fromValue(State::Connected);
       if (device_info->BestBackend() && device_info->BestBackend()->lister_) {
-        if (device_info->BestBackend()->lister_->DeviceNeedsMount(device_info->BestBackend()->unique_id_)) return State_NotMounted;
-        return State_NotConnected;
+        if (device_info->BestBackend()->lister_->DeviceNeedsMount(device_info->BestBackend()->unique_id_)) return QVariant::fromValue(State::NotMounted);
+        return QVariant::fromValue(State::NotConnected);
       }
-      return State_Remembered;
+      return QVariant::fromValue(State::Remembered);
 
     case Role_UpdatingPercentage:
       if (device_info->task_percentage_ == -1) return QVariant();

src/device/devicemanager.h

@@ -85,11 +85,11 @@ class DeviceManager : public SimpleTreeModel<DeviceInfo> {
     LastRole,
   };
 
-  enum State {
-    State_Remembered,
-    State_NotMounted,
-    State_NotConnected,
-    State_Connected,
+  enum class State {
+    Remembered,
+    NotMounted,
+    NotConnected,
+    Connected,
   };
 
   static const int kDeviceIconSize;

src/device/devicestatefiltermodel.cpp

@@ -28,7 +28,7 @@
 #include "devicemanager.h"
 #include "devicestatefiltermodel.h"
 
-DeviceStateFilterModel::DeviceStateFilterModel(QObject *parent, DeviceManager::State state)
+DeviceStateFilterModel::DeviceStateFilterModel(QObject *parent, const DeviceManager::State state)
     : QSortFilterProxyModel(parent),
       state_(state) {
 
@@ -40,7 +40,7 @@ DeviceStateFilterModel::DeviceStateFilterModel(QObject *parent, DeviceManager::S
 
 bool DeviceStateFilterModel::filterAcceptsRow(const int row, const QModelIndex &parent) const {
   Q_UNUSED(parent)
-  return sourceModel()->index(row, 0).data(DeviceManager::Role_State).toInt() != state_ && sourceModel()->index(row, 0).data(DeviceManager::Role_CopyMusic).toBool();
+  return sourceModel()->index(row, 0).data(DeviceManager::Role_State).value<DeviceManager::State>() != state_ && sourceModel()->index(row, 0).data(DeviceManager::Role_CopyMusic).toBool();
 }
 
 void DeviceStateFilterModel::ProxyRowCountChanged(const QModelIndex &idx, const int first, const int last) {

src/device/devicestatefiltermodel.h

@@ -37,7 +37,7 @@ class DeviceStateFilterModel : public QSortFilterProxyModel {
   Q_OBJECT
 
  public:
-  explicit DeviceStateFilterModel(QObject *parent, DeviceManager::State state = DeviceManager::State_Remembered);
+  explicit DeviceStateFilterModel(QObject *parent, const DeviceManager::State state = DeviceManager::State::Remembered);
 
   void setSourceModel(QAbstractItemModel *sourceModel) override;
 
@@ -52,7 +52,7 @@ class DeviceStateFilterModel : public QSortFilterProxyModel {
   void ProxyRowCountChanged(const QModelIndex &idx, const int first, const int last);
 
  private:
-  DeviceManager::State state_;
+  const DeviceManager::State state_;
 };
 
 #endif  // DEVICESTATEFILTERMODEL_H

src/device/deviceview.cpp

@@ -128,19 +128,19 @@ void DeviceItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &op
   }
   else {
     switch (state) {
-      case DeviceManager::State_Remembered:
+      case DeviceManager::State::Remembered:
         status_text = tr("Not connected");
         break;
 
-      case DeviceManager::State_NotMounted:
+      case DeviceManager::State::NotMounted:
         status_text = tr("Not mounted - double click to mount");
         break;
 
-      case DeviceManager::State_NotConnected:
+      case DeviceManager::State::NotConnected:
         status_text = tr("Double click to open");
         break;
 
-      case DeviceManager::State_Connected:{
+      case DeviceManager::State::Connected:{
         QVariant song_count = idx.data(DeviceManager::Role_SongCount);
         if (song_count.isValid()) {
           int count = song_count.toInt();