DolphinQt: Make the mapping window clear button use ControllerEmu's clear functionality.

Source/Core/DolphinQt/Config/Mapping/MappingBool.cpp

@@ -26,13 +26,6 @@ void MappingBool::Connect()
   });
 }
 
-void MappingBool::Clear()
-{
-  m_setting->SetValue(false);
-  m_parent->SaveSettings();
-  Update();
-}
-
 void MappingBool::Update()
 {
   setChecked(m_setting->GetValue());

Source/Core/DolphinQt/Config/Mapping/MappingBool.h

@@ -18,7 +18,6 @@ class MappingBool : public QCheckBox
 public:
   MappingBool(MappingWidget* widget, ControllerEmu::BooleanSetting* setting);
 
-  void Clear();
   void Update();
 
 private:

Source/Core/DolphinQt/Config/Mapping/MappingNumeric.cpp

@@ -28,13 +28,6 @@ void MappingNumeric::Connect()
           });
 }
 
-void MappingNumeric::Clear()
-{
-  m_setting->SetValue(m_setting->m_default_value);
-  m_parent->SaveSettings();
-  Update();
-}
-
 void MappingNumeric::Update()
 {
   setValue(m_setting->GetValue() * 100);

Source/Core/DolphinQt/Config/Mapping/MappingNumeric.h

@@ -19,7 +19,6 @@ class MappingNumeric : public QSpinBox
 public:
   MappingNumeric(MappingWidget* widget, ControllerEmu::NumericSetting* ref);
 
-  void Clear();
   void Update();
 
 private:

Source/Core/DolphinQt/Config/Mapping/MappingRadio.cpp

@@ -26,13 +26,6 @@ void MappingRadio::Connect()
   });
 }
 
-void MappingRadio::Clear()
-{
-  m_setting->SetValue(false);
-  m_parent->SaveSettings();
-  Update();
-}
-
 void MappingRadio::Update()
 {
   setChecked(m_setting->GetValue());

Source/Core/DolphinQt/Config/Mapping/MappingRadio.h

@@ -18,7 +18,6 @@ class MappingRadio : public QRadioButton
 public:
   MappingRadio(MappingWidget* widget, ControllerEmu::BooleanSetting* setting);
 
-  void Clear();
   void Update();
 
 private:

Source/Core/DolphinQt/Config/Mapping/MappingWidget.cpp

@@ -24,7 +24,6 @@
 
 MappingWidget::MappingWidget(MappingWindow* window) : m_parent(window)
 {
-  connect(window, &MappingWindow::ClearFields, this, &MappingWidget::OnClearFields);
   connect(window, &MappingWindow::Update, this, &MappingWidget::Update);
   connect(window, &MappingWindow::Save, this, &MappingWidget::SaveSettings);
 }
@@ -141,21 +140,6 @@ QGroupBox* MappingWidget::CreateGroupBox(const QString& name, ControllerEmu::Con
   return group_box;
 }
 
-void MappingWidget::OnClearFields()
-{
-  for (auto* button : m_buttons)
-    button->Clear();
-
-  for (auto* spinbox : m_numerics)
-    spinbox->Clear();
-
-  for (auto* checkbox : m_bools)
-    checkbox->Clear();
-
-  for (auto* radio : m_radio)
-    radio->Clear();
-}
-
 void MappingWidget::Update()
 {
   for (auto* button : m_buttons)

Source/Core/DolphinQt/Config/Mapping/MappingWidget.h

@@ -60,8 +60,6 @@ protected:
   QGroupBox* CreateGroupBox(const QString& name, ControllerEmu::ControlGroup* group);
 
 private:
-  void OnClearFields();
-
   MappingWindow* m_parent;
   bool m_first = true;
   std::vector<MappingBool*> m_bools;

Source/Core/DolphinQt/Config/Mapping/MappingWindow.cpp

@@ -143,7 +143,7 @@ void MappingWindow::ConnectWidgets()
   connect(m_devices_refresh, &QPushButton::clicked, this, &MappingWindow::RefreshDevices);
   connect(m_devices_combo, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
           this, &MappingWindow::OnDeviceChanged);
-  connect(m_reset_clear, &QPushButton::clicked, this, [this] { emit ClearFields(); });
+  connect(m_reset_clear, &QPushButton::clicked, this, &MappingWindow::OnClearFieldsPressed);
   connect(m_reset_default, &QPushButton::clicked, this, &MappingWindow::OnDefaultFieldsPressed);
   connect(m_profiles_save, &QPushButton::clicked, this, &MappingWindow::OnSaveProfilePressed);
   connect(m_profiles_load, &QPushButton::clicked, this, &MappingWindow::OnLoadProfilePressed);
@@ -380,6 +380,16 @@ void MappingWindow::OnDefaultFieldsPressed()
   emit Save();
 }
 
+void MappingWindow::OnClearFieldsPressed()
+{
+  // Loading an empty inifile section clears everything.
+  IniFile::Section sec;
+  m_controller->LoadConfig(&sec);
+  m_controller->UpdateReferences(g_controller_interface);
+  emit Update();
+  emit Save();
+}
+
 bool MappingWindow::IsIterativeInput() const
 {
   return m_iterative_input->isChecked();

Source/Core/DolphinQt/Config/Mapping/MappingWindow.h

@@ -56,7 +56,6 @@ public:
 
 signals:
   void Update();
-  void ClearFields();
   void Save();
 
 private:
@@ -75,6 +74,7 @@ private:
   void OnLoadProfilePressed();
   void OnSaveProfilePressed();
   void OnDefaultFieldsPressed();
+  void OnClearFieldsPressed();
   void OnDeviceChanged(int index);
   void OnGlobalDevicesChanged();