Qt: Implement advanced mapping I/O windows

12 files changed, 517 insertions, 68 deletions

diff --git a/Source/Core/DolphinQt2/CMakeLists.txt b/Source/Core/DolphinQt2/CMakeLists.txt
index e5ff552b6c..58cca8e821 100644
--- a/Source/Core/DolphinQt2/CMakeLists.txt
+++ b/Source/Core/DolphinQt2/CMakeLists.txt
@@ -31,8 +31,10 @@ set(SRCS
   Config/Mapping/HotkeyStates.cpp
   Config/Mapping/HotkeyTAS.cpp
   Config/Mapping/HotkeyWii.cpp
+  Config/Mapping/IOWindow.cpp
   Config/Mapping/MappingBool.cpp
   Config/Mapping/MappingButton.cpp
+  Config/Mapping/MappingCommon.cpp
   Config/Mapping/MappingNumeric.cpp
   Config/Mapping/MappingWidget.cpp
   Config/Mapping/MappingWindow.cpp
diff --git a/Source/Core/DolphinQt2/Config/Mapping/IOWindow.cpp b/Source/Core/DolphinQt2/Config/Mapping/IOWindow.cpp
new file mode 100644
index 0000000000..ac2b22eb1d
--- /dev/null
+++ b/Source/Core/DolphinQt2/Config/Mapping/IOWindow.cpp
@@ -0,0 +1,261 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "DolphinQt2/Config/Mapping/IOWindow.h"
+
+#include <thread>
+
+#include <QComboBox>
+#include <QDialogButtonBox>
+#include <QGroupBox>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QListWidget>
+#include <QPlainTextEdit>
+#include <QPushButton>
+#include <QSlider>
+#include <QSpinBox>
+#include <QVBoxLayout>
+
+#include "Core/Core.h"
+#include "DolphinQt2/Config/Mapping/MappingCommon.h"
+#include "DolphinQt2/Config/Mapping/MappingWidget.h"
+#include "DolphinQt2/Config/Mapping/MappingWindow.h"
+#include "InputCommon/ControlReference/ControlReference.h"
+#include "InputCommon/ControllerEmu/ControllerEmu.h"
+#include "InputCommon/ControllerInterface/ControllerInterface.h"
+
+constexpr int SLIDER_TICK_COUNT = 100;
+
+IOWindow::IOWindow(QWidget* parent, ControllerEmu::EmulatedController* controller,
+                   ControlReference* ref, IOWindow::Type type)
+    : QDialog(parent), m_reference(ref), m_controller(controller), m_type(type)
+{
+  CreateMainLayout();
+  ConnectWidgets();
+  setWindowTitle(type == IOWindow::Type::Input ? tr("Configure Input") : tr("Configure Output"));
+
+  Update();
+}
+
+void IOWindow::CreateMainLayout()
+{
+  m_main_layout = new QVBoxLayout();
+
+  m_devices_combo = new QComboBox();
+  m_option_list = new QListWidget();
+  m_select_button = new QPushButton(tr("Select"));
+  m_detect_button = new QPushButton(tr("Detect"));
+  m_or_button = new QPushButton(tr("| OR"));
+  m_and_button = new QPushButton(tr("&& AND"));
+  m_add_button = new QPushButton(tr("+ ADD"));
+  m_not_button = new QPushButton(tr("! NOT"));
+  m_test_button = new QPushButton(tr("Test"));
+  m_expression_text = new QPlainTextEdit();
+  m_button_box = new QDialogButtonBox();
+  m_clear_button = new QPushButton(tr("Clear"));
+  m_apply_button = new QPushButton(tr("Apply"));
+  m_range_slider = new QSlider(Qt::Horizontal);
+  m_range_spinbox = new QSpinBox();
+
+  // Devices
+  m_main_layout->addWidget(m_devices_combo);
+
+  // Range
+  auto* range_hbox = new QHBoxLayout();
+  range_hbox->addWidget(new QLabel(tr("Range")));
+  range_hbox->addWidget(m_range_slider);
+  range_hbox->addWidget(m_range_spinbox);
+  m_range_slider->setMinimum(-500);
+  m_range_slider->setMaximum(500);
+  m_range_spinbox->setMinimum(-500);
+  m_range_spinbox->setMaximum(500);
+  m_main_layout->addItem(range_hbox);
+
+  // Options (Buttons, Outputs) and action buttons
+  for (QPushButton* button : {m_select_button, m_detect_button, m_or_button, m_and_button,
+                              m_add_button, m_not_button, m_test_button})
+  {
+    button->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+  }
+
+  auto* hbox = new QHBoxLayout();
+  auto* button_vbox = new QVBoxLayout();
+  hbox->addWidget(m_option_list, 8);
+  hbox->addLayout(button_vbox, 1);
+
+  button_vbox->addWidget(m_select_button);
+  button_vbox->addWidget(m_type == Type::Input ? m_detect_button : m_test_button);
+  button_vbox->addWidget(m_or_button);
+
+  if (m_type == Type::Input)
+  {
+    button_vbox->addWidget(m_and_button);
+    button_vbox->addWidget(m_add_button);
+    button_vbox->addWidget(m_not_button);
+  }
+
+  m_main_layout->addLayout(hbox, 2);
+  m_main_layout->addWidget(m_expression_text, 1);
+
+  // Button Box
+  m_main_layout->addWidget(m_button_box);
+  m_button_box->addButton(m_clear_button, QDialogButtonBox::ActionRole);
+  m_button_box->addButton(m_apply_button, QDialogButtonBox::ActionRole);
+  m_button_box->addButton(QDialogButtonBox::Ok);
+
+  setLayout(m_main_layout);
+}
+
+void IOWindow::Update()
+{
+  m_expression_text->setPlainText(QString::fromStdString(m_reference->expression));
+  m_range_spinbox->setValue(m_reference->range * SLIDER_TICK_COUNT);
+  m_range_slider->setValue(m_reference->range * SLIDER_TICK_COUNT);
+
+  m_devq.FromString(m_controller->default_device.ToString());
+
+  UpdateDeviceList();
+  UpdateOptionList();
+}
+
+void IOWindow::ConnectWidgets()
+{
+  connect(m_select_button, &QPushButton::clicked, [this] { AppendSelectedOption(""); });
+  connect(m_add_button, &QPushButton::clicked, [this] { AppendSelectedOption(" + "); });
+  connect(m_and_button, &QPushButton::clicked, [this] { AppendSelectedOption(" & "); });
+  connect(m_or_button, &QPushButton::clicked, [this] { AppendSelectedOption(" | "); });
+  connect(m_not_button, &QPushButton::clicked, [this] { AppendSelectedOption("!"); });
+
+  connect(m_type == IOWindow::Type::Input ? m_detect_button : m_test_button, &QPushButton::clicked,
+          this, &IOWindow::OnDetectButtonPressed);
+
+  connect(m_button_box, &QDialogButtonBox::clicked, this, &IOWindow::OnDialogButtonPressed);
+  connect(m_devices_combo, &QComboBox::currentTextChanged, this, &IOWindow::OnDeviceChanged);
+  connect(m_range_spinbox, static_cast<void (QSpinBox::*)(int value)>(&QSpinBox::valueChanged),
+          this, &IOWindow::OnRangeChanged);
+  connect(m_range_slider, static_cast<void (QSlider::*)(int value)>(&QSlider::valueChanged), this,
+          &IOWindow::OnRangeChanged);
+}
+
+void IOWindow::AppendSelectedOption(const std::string& prefix)
+{
+  if (m_option_list->currentItem() == nullptr)
+    return;
+
+  m_expression_text->insertPlainText(
+      QString::fromStdString(prefix) +
+      MappingCommon::GetExpressionForControl(m_option_list->currentItem()->text(), m_devq,
+                                             m_controller->default_device));
+}
+
+void IOWindow::OnDeviceChanged(const QString& device)
+{
+  m_devq.FromString(device.toStdString());
+  UpdateOptionList();
+}
+
+void IOWindow::OnDialogButtonPressed(QAbstractButton* button)
+{
+  if (button == m_clear_button)
+  {
+    m_expression_text->clear();
+    return;
+  }
+
+  m_reference->expression = m_expression_text->toPlainText().toStdString();
+
+  if (button != m_apply_button)
+    accept();
+}
+
+void IOWindow::OnDetectButtonPressed()
+{
+  if (m_block.IsSet())
+    return;
+
+  m_block.Set(true);
+  m_expression_text->setEnabled(false);
+  std::thread([this] {
+    auto* btn = m_type == IOWindow::Type::Input ? m_detect_button : m_test_button;
+    const auto old_label = btn->text();
+
+    btn->setText(QStringLiteral("..."));
+
+    const auto expr = MappingCommon::DetectExpression(
+        m_reference, g_controller_interface.FindDevice(m_devq).get(), m_devq, m_devq);
+
+    btn->setText(old_label);
+
+    if (!expr.isEmpty())
+    {
+      const auto list = m_option_list->findItems(expr, Qt::MatchFixedString);
+
+      if (list.size() > 0)
+        m_option_list->setCurrentItem(list[0]);
+    }
+    m_expression_text->setEnabled(true);
+    m_block.Set(false);
+  }).detach();
+}
+
+void IOWindow::OnRangeChanged(int value)
+{
+  m_reference->range = static_cast<double>(value) / SLIDER_TICK_COUNT;
+  m_range_spinbox->setValue(m_reference->range * SLIDER_TICK_COUNT);
+  m_range_slider->setValue(m_reference->range * SLIDER_TICK_COUNT);
+}
+
+void IOWindow::UpdateOptionList()
+{
+  if (m_block.IsSet())
+    return;
+
+  m_option_list->clear();
+
+  const auto device = g_controller_interface.FindDevice(m_devq);
+
+  if (m_reference->IsInput())
+  {
+    for (const auto* input : device->Inputs())
+    {
+      m_option_list->addItem(QString::fromStdString(input->GetName()));
+    }
+  }
+  else
+  {
+    for (const auto* output : device->Outputs())
+    {
+      m_option_list->addItem(QString::fromStdString(output->GetName()));
+    }
+  }
+}
+
+void IOWindow::UpdateDeviceList()
+{
+  m_block.Set(true);
+  m_devices_combo->clear();
+
+  const bool paused = Core::PauseAndLock(true);
+
+  g_controller_interface.RefreshDevices();
+  m_controller->UpdateReferences(g_controller_interface);
+  m_controller->UpdateDefaultDevice();
+
+  // Adding default device regardless if it's currently connected or not
+  const auto default_device = m_controller->default_device.ToString();
+
+  m_devices_combo->addItem(QString::fromStdString(default_device));
+
+  for (const auto& name : g_controller_interface.GetAllDeviceStrings())
+  {
+    if (name != default_device)
+      m_devices_combo->addItem(QString::fromStdString(name));
+  }
+
+  m_devices_combo->setCurrentIndex(0);
+
+  Core::PauseAndLock(false, paused);
+  m_block.Set(false);
+}
diff --git a/Source/Core/DolphinQt2/Config/Mapping/IOWindow.h b/Source/Core/DolphinQt2/Config/Mapping/IOWindow.h
new file mode 100644
index 0000000000..b59d84db65
--- /dev/null
+++ b/Source/Core/DolphinQt2/Config/Mapping/IOWindow.h
@@ -0,0 +1,99 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QDialog>
+#include <QString>
+
+#include "Common/Flag.h"
+#include "InputCommon/ControllerInterface/Device.h"
+
+class ControlReference;
+class QAbstractButton;
+class QComboBox;
+class QDialogButtonBox;
+class QListWidget;
+class QVBoxLayout;
+class QWidget;
+class QPlainTextEdit;
+class QPushButton;
+class QSlider;
+class QSpinBox;
+
+namespace ControllerEmu
+{
+class EmulatedController;
+}
+
+class IOWindow final : public QDialog
+{
+  Q_OBJECT
+public:
+  enum class Type
+  {
+    Input,
+    Output
+  };
+
+  explicit IOWindow(QWidget* parent, ControllerEmu::EmulatedController* m_controller,
+                    ControlReference* ref, Type type);
+
+private:
+  void CreateMainLayout();
+  void ConnectWidgets();
+  void LoadSettings();
+  void SaveSettings();
+  void Update();
+
+  void OnDialogButtonPressed(QAbstractButton* button);
+  void OnDeviceChanged(const QString& device);
+  void OnDetectButtonPressed();
+  void OnRangeChanged(int range);
+
+  void AppendSelectedOption(const std::string& prefix);
+  void UpdateOptionList();
+  void UpdateDeviceList();
+
+  // Main Layout
+  QVBoxLayout* m_main_layout;
+
+  // Devices
+  QComboBox* m_devices_combo;
+
+  // Options
+  QListWidget* m_option_list;
+
+  // Range
+  QSlider* m_range_slider;
+  QSpinBox* m_range_spinbox;
+
+  // Shared actions
+  QPushButton* m_select_button;
+  QPushButton* m_or_button;
+
+  // Input actions
+  QPushButton* m_detect_button;
+  QPushButton* m_and_button;
+  QPushButton* m_not_button;
+  QPushButton* m_add_button;
+
+  // Output actions
+  QPushButton* m_test_button;
+
+  // Textarea
+  QPlainTextEdit* m_expression_text;
+
+  // Buttonbox
+  QDialogButtonBox* m_button_box;
+  QPushButton* m_clear_button;
+  QPushButton* m_apply_button;
+
+  ControlReference* m_reference;
+  ControllerEmu::EmulatedController* m_controller;
+
+  ciface::Core::DeviceQualifier m_devq;
+  Common::Flag m_block;
+  Type m_type;
+};
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp b/Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp
index dcb92e6072..02e6917d8c 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp
@@ -2,19 +2,23 @@
 // Licensed under GPLv2+
 // Refer to the license.txt file included.
 
+#include <thread>
+
 #include <QMouseEvent>
 #include <QRegExp>
 #include <QString>
-#include <thread>
 
 #include "DolphinQt2/Config/Mapping/MappingButton.h"
 
 #include "Common/Thread.h"
+#include "DolphinQt2/Config/Mapping/IOWindow.h"
+#include "DolphinQt2/Config/Mapping/MappingCommon.h"
 #include "DolphinQt2/Config/Mapping/MappingWidget.h"
 #include "DolphinQt2/Config/Mapping/MappingWindow.h"
 #include "InputCommon/ControlReference/ControlReference.h"
 #include "InputCommon/ControllerEmu/ControllerEmu.h"
 #include "InputCommon/ControllerInterface/ControllerInterface.h"
+#include "InputCommon/ControllerInterface/Device.h"
 
 MappingButton::MappingButton(MappingWidget* widget, ControlReference* ref)
     : ElidedButton(QString::fromStdString(ref->expression)), m_parent(widget), m_reference(ref)
@@ -27,81 +31,52 @@ void MappingButton::Connect()
   connect(this, &MappingButton::clicked, this, &MappingButton::OnButtonPressed);
 }
 
-static QString
-GetExpressionForControl(const QString& control_name,
-                        const ciface::Core::DeviceQualifier* control_device = nullptr,
-                        const ciface::Core::DeviceQualifier* default_device = nullptr)
-{
-  QString expr;
-
-  // non-default device
-  if (control_device && default_device && !(*control_device == *default_device))
-  {
-    expr += QString::fromStdString(control_device->ToString());
-    expr += QStringLiteral(":");
-  }
-
-  // append the control name
-  expr += control_name;
-
-  QRegExp reg(QStringLiteral("[a-zA-Z0-9_]*"));
-  if (!reg.exactMatch(expr))
-    expr = QStringLiteral("`%1`").arg(expr);
-
-  return expr;
-}
-
 void MappingButton::OnButtonPressed()
 {
-  if (m_block || m_parent->GetDevice() == nullptr)
+  if (m_block || m_parent->GetDevice() == nullptr || !m_reference->IsInput())
     return;
 
   // Make sure that we don't block event handling
   std::thread([this] {
-    if (m_reference->IsInput())
-    {
-      const auto dev = m_parent->GetDevice();
+    const auto dev = m_parent->GetDevice();
 
-      setText(QStringLiteral("..."));
+    setText(QStringLiteral("..."));
 
-      Common::SleepCurrentThread(100);
+    Common::SleepCurrentThread(100);
 
-      SetBlockInputs(true);
+    SetBlockInputs(true);
 
-      if (m_parent->GetFirstButtonPress())
-        m_reference->Detect(10, dev.get());
+    if (m_parent->GetFirstButtonPress())
+      m_reference->Detect(10, dev.get());
 
-      // Avoid that the button press itself is registered as an event
-      Common::SleepCurrentThread(100);
+    // Avoid that the button press itself is registered as an event
+    Common::SleepCurrentThread(100);
 
-      ciface::Core::Device::Control* const ctrl = m_reference->Detect(5000, dev.get());
+    const auto expr = MappingCommon::DetectExpression(m_reference, dev.get(),
+                                                      m_parent->GetParent()->GetDeviceQualifier(),
+                                                      m_parent->GetController()->default_device);
 
-      SetBlockInputs(false);
-      if (ctrl)
-      {
-        m_reference->expression =
-            GetExpressionForControl(QString::fromStdString(ctrl->GetName())).toStdString();
-        Update();
-      }
-      else
-      {
-        OnButtonTimeout();
-      }
+    SetBlockInputs(false);
+    if (!expr.isEmpty())
+    {
+      m_reference->expression = expr.toStdString();
+      Update();
     }
     else
     {
-      // TODO: Implement Output
+      OnButtonTimeout();
     }
   }).detach();
 }
 
 void MappingButton::OnButtonTimeout()
 {
-  setText(QStringLiteral(""));
+  setText(QString::fromStdString(m_reference->expression));
 }
 
 void MappingButton::Clear()
 {
+  m_parent->Update();
   m_reference->expression.clear();
   Update();
 }
@@ -137,25 +112,21 @@ bool MappingButton::event(QEvent* event)
 
 void MappingButton::mouseReleaseEvent(QMouseEvent* event)
 {
-  if (m_reference->IsInput())
+  switch (event->button())
   {
-    switch (event->button())
-    {
-    case Qt::MouseButton::LeftButton:
+  case Qt::MouseButton::LeftButton:
+    if (m_reference->IsInput())
       QPushButton::mouseReleaseEvent(event);
-      break;
-    case Qt::MouseButton::MiddleButton:
-      Clear();
-      break;
-    case Qt::MouseButton::RightButton:
-      // TODO Open advanced dialog
-      break;
-    default:
-      break;
-    }
-  }
-  else
-  {
-    // TODO Open output dialog
+    else
+      emit AdvancedPressed();
+    return;
+  case Qt::MouseButton::MiddleButton:
+    Clear();
+    return;
+  case Qt::MouseButton::RightButton:
+    emit AdvancedPressed();
+    return;
+  default:
+    return;
   }
 }
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingButton.h b/Source/Core/DolphinQt2/Config/Mapping/MappingButton.h
index 27249c0685..37db71cc00 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingButton.h
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingButton.h
@@ -13,12 +13,16 @@ class QMouseEvent;
 
 class MappingButton : public ElidedButton
 {
+  Q_OBJECT
 public:
   MappingButton(MappingWidget* widget, ControlReference* ref);
 
   void Clear();
   void Update();
 
+signals:
+  void AdvancedPressed();
+
 private:
   bool event(QEvent* event) override;
   void mouseReleaseEvent(QMouseEvent* event) override;
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingCommon.cpp b/Source/Core/DolphinQt2/Config/Mapping/MappingCommon.cpp
new file mode 100644
index 0000000000..43960cf762
--- /dev/null
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingCommon.cpp
@@ -0,0 +1,50 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "DolphinQt2/Config/Mapping/MappingCommon.h"
+
+#include <QRegExp>
+#include <QString>
+
+#include "InputCommon/ControlReference/ControlReference.h"
+#include "InputCommon/ControllerInterface/Device.h"
+
+namespace MappingCommon
+{
+QString GetExpressionForControl(const QString& control_name,
+                                const ciface::Core::DeviceQualifier& control_device,
+                                const ciface::Core::DeviceQualifier& default_device)
+{
+  QString expr;
+
+  // non-default device
+  if (control_device != default_device)
+  {
+    expr += QString::fromStdString(control_device.ToString());
+    expr += QStringLiteral(":");
+  }
+
+  // append the control name
+  expr += control_name;
+
+  QRegExp reg(QStringLiteral("[a-zA-Z]+"));
+  if (!reg.exactMatch(expr))
+    expr = QStringLiteral("`%1`").arg(expr);
+  return expr;
+}
+
+QString DetectExpression(ControlReference* reference, ciface::Core::Device* device,
+                         const ciface::Core::DeviceQualifier& m_devq,
+                         const ciface::Core::DeviceQualifier& default_device)
+{
+  ciface::Core::Device::Control* const ctrl = reference->Detect(5000, device);
+
+  if (ctrl)
+  {
+    return MappingCommon::GetExpressionForControl(QString::fromStdString(ctrl->GetName()), m_devq,
+                                                  default_device);
+  }
+  return QStringLiteral("");
+}
+}
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingCommon.h b/Source/Core/DolphinQt2/Config/Mapping/MappingCommon.h
new file mode 100644
index 0000000000..935eb20602
--- /dev/null
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingCommon.h
@@ -0,0 +1,27 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+class QString;
+class ControlReference;
+
+namespace ciface
+{
+namespace Core
+{
+class Device;
+class DeviceQualifier;
+}
+}
+
+namespace MappingCommon
+{
+QString GetExpressionForControl(const QString& control_name,
+                                const ciface::Core::DeviceQualifier& control_device,
+                                const ciface::Core::DeviceQualifier& default_device);
+QString DetectExpression(ControlReference* reference, ciface::Core::Device* device,
+                         const ciface::Core::DeviceQualifier& m_devq,
+                         const ciface::Core::DeviceQualifier& default_device);
+}
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingWidget.cpp b/Source/Core/DolphinQt2/Config/Mapping/MappingWidget.cpp
index bb711f3058..979b01f260 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingWidget.cpp
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingWidget.cpp
@@ -8,6 +8,7 @@
 
 #include "DolphinQt2/Config/Mapping/MappingWidget.h"
 
+#include "DolphinQt2/Config/Mapping/IOWindow.h"
 #include "DolphinQt2/Config/Mapping/MappingBool.h"
 #include "DolphinQt2/Config/Mapping/MappingButton.h"
 #include "DolphinQt2/Config/Mapping/MappingNumeric.h"
@@ -49,9 +50,23 @@ QGroupBox* MappingWidget::CreateGroupBox(const QString& name, ControllerEmu::Con
   for (auto& control : group->controls)
   {
     auto* button = new MappingButton(this, control->control_ref.get());
+
     button->setMinimumWidth(125);
     button->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
     form_layout->addRow(QString::fromStdString(control->name), button);
+
+    auto* control_ref = control->control_ref.get();
+
+    connect(button, &MappingButton::AdvancedPressed, [this, control_ref] {
+      if (m_parent->GetDevice() == nullptr)
+        return;
+
+      IOWindow io(this, m_parent->GetController(), control_ref,
+                  control_ref->IsInput() ? IOWindow::Type::Input : IOWindow::Type::Output);
+      io.exec();
+      Update();
+    });
+
     m_buttons.push_back(button);
   }
 
@@ -108,3 +123,8 @@ bool MappingWidget::GetFirstButtonPress()
   }
   return false;
 }
+
+ControllerEmu::EmulatedController* MappingWidget::GetController() const
+{
+  return m_parent->GetController();
+}
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingWidget.h b/Source/Core/DolphinQt2/Config/Mapping/MappingWidget.h
index f7af6a3e2d..a942038b3f 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingWidget.h
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingWidget.h
@@ -12,6 +12,7 @@
 
 class ControlGroupBox;
 class InputConfig;
+class IOWindow;
 class MappingBool;
 class MappingButton;
 class MappingNumeric;
@@ -22,6 +23,7 @@ namespace ControllerEmu
 {
 class Control;
 class ControlGroup;
+class EmulatedController;
 }
 
 namespace ciface
@@ -38,6 +40,7 @@ class MappingWidget : public QWidget
 public:
   explicit MappingWidget(MappingWindow* window);
 
+  ControllerEmu::EmulatedController* GetController() const;
   std::shared_ptr<ciface::Core::Device> GetDevice() const;
 
   void SetBlockInputs(const bool block);
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp b/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp
index 33e30a9b93..52efb0b218 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp
@@ -354,6 +354,11 @@ int MappingWindow::GetPort() const
   return m_port;
 }
 
+ControllerEmu::EmulatedController* MappingWindow::GetController() const
+{
+  return m_controller;
+}
+
 const ciface::Core::DeviceQualifier& MappingWindow::GetDeviceQualifier() const
 {
   return m_devq;
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h b/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h
index 8e6fd82d7c..730c9a8341 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h
@@ -54,6 +54,7 @@ public:
   std::shared_ptr<ciface::Core::Device> GetDevice() const;
 
   void SetBlockInputs(const bool block);
+  ControllerEmu::EmulatedController* GetController() const;
 signals:
   void Update();
   void ClearFields();
diff --git a/Source/Core/DolphinQt2/DolphinQt2.vcxproj b/Source/Core/DolphinQt2/DolphinQt2.vcxproj
index f1bce1701c..54b7a2bfd4 100644
--- a/Source/Core/DolphinQt2/DolphinQt2.vcxproj
+++ b/Source/Core/DolphinQt2/DolphinQt2.vcxproj
@@ -72,6 +72,8 @@
     <QtMoc Include="AboutDialog.h" />
     <QtMoc Include="Config\ControllersWindow.h" />
     <QtMoc Include="Config\FilesystemWidget.h" />
+    <QtMoc Include="Config\Mapping\IOWindow.h" />
+    <QtMoc Include="Config\Mapping\MappingButton.h" />
     <QtMoc Include="Config\Mapping\MappingWidget.h" />
     <QtMoc Include="Config\Mapping\MappingWindow.h" />
     <QtMoc Include="Config\InfoWidget.h" />
@@ -111,8 +113,10 @@
     <ClCompile Include="$(QtMocOutPrefix)InDevelopmentWarning.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)InfoWidget.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)InterfacePane.cpp" />
+    <ClCompile Include="$(QtMocOutPrefix)IOWindow.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)ListProxyModel.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)MainWindow.cpp" />
+    <ClCompile Include="$(QtMocOutPrefix)MappingButton.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)MappingWidget.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)MappingWindow.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)MenuBar.cpp" />
@@ -135,8 +139,10 @@
     <ClCompile Include="Config\Mapping\HotkeyStates.cpp" />
     <ClCompile Include="Config\Mapping\HotkeyTAS.cpp" />
     <ClCompile Include="Config\Mapping\HotkeyWii.cpp" />
+    <ClCompile Include="Config\Mapping\IOWindow.cpp" />
     <ClCompile Include="Config\Mapping\MappingBool.cpp" />
     <ClCompile Include="Config\Mapping\MappingButton.cpp" />
+    <ClCompile Include="Config\Mapping\MappingCommon.cpp" />
     <ClCompile Include="Config\Mapping\MappingNumeric.cpp" />
     <ClCompile Include="Config\Mapping\MappingWidget.cpp" />
     <ClCompile Include="Config\Mapping\MappingWindow.cpp" />