applets/profile_select: Use aliases for callbacks

Deduplicates callback definitions and situates it in one place.

src/core/frontend/applets/profile_select.cpp

@@ -9,8 +9,7 @@ namespace Core::Frontend {
 
 ProfileSelectApplet::~ProfileSelectApplet() = default;
 
-void DefaultProfileSelectApplet::SelectProfile(
-    std::function<void(std::optional<Common::UUID>)> callback) const {
+void DefaultProfileSelectApplet::SelectProfile(SelectProfileCallback callback) const {
     Service::Account::ProfileManager manager;
     callback(manager.GetUser(Settings::values.current_user.GetValue()).value_or(Common::UUID{}));
     LOG_INFO(Service_ACC, "called, selecting current user instead of prompting...");

src/core/frontend/applets/profile_select.h

@@ -11,14 +11,16 @@ namespace Core::Frontend {
 
 class ProfileSelectApplet {
 public:
+    using SelectProfileCallback = std::function<void(std::optional<Common::UUID>)>;
+
     virtual ~ProfileSelectApplet();
 
-    virtual void SelectProfile(std::function<void(std::optional<Common::UUID>)> callback) const = 0;
+    virtual void SelectProfile(SelectProfileCallback callback) const = 0;
 };
 
 class DefaultProfileSelectApplet final : public ProfileSelectApplet {
 public:
-    void SelectProfile(std::function<void(std::optional<Common::UUID>)> callback) const override;
+    void SelectProfile(SelectProfileCallback callback) const override;
 };
 
 } // namespace Core::Frontend

src/yuzu/applets/qt_profile_select.cpp

@@ -163,8 +163,7 @@ QtProfileSelector::QtProfileSelector(GMainWindow& parent) {
 
 QtProfileSelector::~QtProfileSelector() = default;
 
-void QtProfileSelector::SelectProfile(
-    std::function<void(std::optional<Common::UUID>)> callback_) const {
+void QtProfileSelector::SelectProfile(SelectProfileCallback callback_) const {
     callback = std::move(callback_);
     emit MainWindowSelectProfile();
 }

src/yuzu/applets/qt_profile_select.h

@@ -65,7 +65,7 @@ public:
     explicit QtProfileSelector(GMainWindow& parent);
     ~QtProfileSelector() override;
 
-    void SelectProfile(std::function<void(std::optional<Common::UUID>)> callback_) const override;
+    void SelectProfile(SelectProfileCallback callback_) const override;
 
 signals:
     void MainWindowSelectProfile() const;
@@ -73,5 +73,5 @@ signals:
 private:
     void MainWindowFinishedSelection(std::optional<Common::UUID> uuid);
 
-    mutable std::function<void(std::optional<Common::UUID>)> callback;
+    mutable SelectProfileCallback callback;
 };