Adding apply/discard/reset functionality to settings dialog

scwx-qt/source/scwx/qt/settings/settings_interface_base.hpp

@@ -0,0 +1,67 @@
+#pragma once
+
+#include <memory>
+
+class QAbstractButton;
+class QWidget;
+
+namespace scwx
+{
+namespace qt
+{
+namespace settings
+{
+
+class SettingsInterfaceBase
+{
+public:
+   explicit SettingsInterfaceBase();
+   ~SettingsInterfaceBase();
+
+   SettingsInterfaceBase(const SettingsInterfaceBase&)            = delete;
+   SettingsInterfaceBase& operator=(const SettingsInterfaceBase&) = delete;
+
+   SettingsInterfaceBase(SettingsInterfaceBase&&) noexcept;
+   SettingsInterfaceBase& operator=(SettingsInterfaceBase&&) noexcept;
+
+   /**
+    * Sets the current value of the associated settings variable to the staged
+    * value.
+    * 
+    * @return true if the staged value was committed, false if no staged value
+    * is present.
+    */
+   virtual bool Commit() = 0;
+
+   /**
+    * Clears the staged value of the associated settings variable.
+    */
+   virtual void Reset() = 0;
+
+   /**
+    * Stages the default value of the associated settings variable.
+    */
+   virtual void StageDefault() = 0;
+
+   /**
+    * Sets the edit widget from the settings dialog.
+    *
+    * @param widget Edit widget
+    */
+   virtual void SetEditWidget(QWidget* widget) = 0;
+
+   /**
+    * Sets the reset button from the settings dialog.
+    *
+    * @param button Reset button
+    */
+   virtual void SetResetButton(QAbstractButton* button) = 0;
+
+private:
+   class Impl;
+   std::unique_ptr<Impl> p;
+};
+
+} // namespace settings
+} // namespace qt
+} // namespace scwx