MappingButton: grab and release mouse and keyboard instead of calling parent SetBlockInputs

Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp

@@ -42,7 +42,9 @@ void MappingButton::OnButtonPressed()
 
     setText(QStringLiteral("..."));
 
-    SetBlockInputs(true);
+    m_block = true;
+    grabKeyboard();
+    grabMouse();
 
     // Avoid that the button press itself is registered as an event
     Common::SleepCurrentThread(100);
@@ -51,7 +53,10 @@ void MappingButton::OnButtonPressed()
                                                       m_parent->GetParent()->GetDeviceQualifier(),
                                                       m_parent->GetController()->default_device);
 
-    SetBlockInputs(false);
+    releaseMouse();
+    releaseKeyboard();
+    m_block = false;
+
     if (!expr.isEmpty())
     {
       m_reference->expression = expr.toStdString();
@@ -84,15 +89,20 @@ void MappingButton::Update()
   m_parent->SaveSettings();
 }
 
-void MappingButton::SetBlockInputs(const bool block)
-{
-  m_parent->SetBlockInputs(block);
-  m_block = block;
-}
-
 bool MappingButton::event(QEvent* event)
 {
-  return !m_block ? QPushButton::event(event) : true;
+  const QEvent::Type event_type = event->type();
+  // Returning 'true' means "yes, this event has been handled, don't propagate it to parent
+  // widgets".
+  if (m_block &&
+      (event_type == QEvent::KeyPress || event_type == QEvent::KeyRelease ||
+       event_type == QEvent::MouseButtonPress || event_type == QEvent::MouseButtonRelease ||
+       event_type == QEvent::MouseButtonDblClick))
+  {
+    return true;
+  }
+
+  return QPushButton::event(event);
 }
 
 void MappingButton::mouseReleaseEvent(QMouseEvent* event)

Source/Core/DolphinQt2/Config/Mapping/MappingButton.h

@@ -30,7 +30,6 @@ private:
   void OnButtonPressed();
   void OnButtonTimeout();
   void Connect();
-  void SetBlockInputs(const bool block);
 
   MappingWidget* m_parent;
   ControlReference* m_reference;

Source/Core/DolphinQt2/Config/Mapping/MappingWidget.cpp

@@ -89,11 +89,6 @@ QGroupBox* MappingWidget::CreateGroupBox(const QString& name, ControllerEmu::Con
   return group_box;
 }
 
-void MappingWidget::SetBlockInputs(const bool block)
-{
-  m_parent->SetBlockInputs(block);
-}
-
 void MappingWidget::OnClearFields()
 {
   for (auto* button : m_buttons)

Source/Core/DolphinQt2/Config/Mapping/MappingWidget.h

@@ -43,7 +43,6 @@ public:
   ControllerEmu::EmulatedController* GetController() const;
   std::shared_ptr<ciface::Core::Device> GetDevice() const;
 
-  void SetBlockInputs(const bool block);
   MappingWindow* GetParent() const;
 
   virtual void LoadSettings() = 0;

Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp

@@ -369,19 +369,6 @@ std::shared_ptr<ciface::Core::Device> MappingWindow::GetDevice() const
   return g_controller_interface.FindDevice(m_devq);
 }
 
-void MappingWindow::SetBlockInputs(const bool block)
-{
-  m_block = block;
-}
-
-bool MappingWindow::event(QEvent* event)
-{
-  if (!m_block)
-    return QDialog::event(event);
-
-  return false;
-}
-
 void MappingWindow::OnDefaultFieldsPressed()
 {
   if (m_controller == nullptr)

Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h

@@ -53,7 +53,6 @@ public:
   const ciface::Core::DeviceQualifier& GetDeviceQualifier() const;
   std::shared_ptr<ciface::Core::Device> GetDevice() const;
 
-  void SetBlockInputs(const bool block);
   ControllerEmu::EmulatedController* GetController() const;
 signals:
   void Update();
@@ -80,8 +79,6 @@ private:
   void OnProfileChanged(int index);
   void OnDeviceChanged(int index);
 
-  bool event(QEvent* event) override;
-
   ControllerEmu::EmulatedController* m_controller = nullptr;
 
   // Main
@@ -114,7 +111,6 @@ private:
   Type m_mapping_type;
   const int m_port;
   bool m_is_complex;
-  bool m_block = false;
   InputConfig* m_config;
   ciface::Core::DeviceQualifier m_devq;
 };