From 574c609709e12326284ef694d955c7a018cfd89f Mon Sep 17 00:00:00 2001
From: spycrab <spycrab@users.noreply.github.com>
Date: Wed, 23 May 2018 23:47:42 +0200
Subject: [PATCH] Qt/Mapping: Add option to map all devices at once

---
 .../Config/Mapping/MappingButton.cpp          | 59 +++++++++++++++++--
 .../Config/Mapping/MappingWindow.cpp          | 10 ++++
 .../DolphinQt2/Config/Mapping/MappingWindow.h |  1 +
 3 files changed, 66 insertions(+), 4 deletions(-)

diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp b/Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp
index b63073cfa6..d60ff43459 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingButton.cpp
@@ -2,7 +2,9 @@
 // Licensed under GPLv2+
 // Refer to the license.txt file included.
 
+#include <future>
 #include <thread>
+#include <utility>
 
 #include <QApplication>
 #include <QFontMetrics>
@@ -108,15 +110,64 @@ void MappingButton::Detect()
 
   // Make sure that we don't block event handling
   std::thread thread([this] {
-    const auto dev = m_parent->GetDevice();
-
     setText(QStringLiteral("..."));
 
     // Avoid that the button press itself is registered as an event
     Common::SleepCurrentThread(100);
 
-    const auto expr = MappingCommon::DetectExpression(
-        m_reference, dev.get(), m_parent->GetController()->GetDefaultDevice());
+    std::vector<std::future<std::pair<QString, QString>>> futures;
+    QString expr;
+
+    if (m_parent->GetParent()->IsMappingAllDevices())
+    {
+      for (const std::string& device_str : g_controller_interface.GetAllDeviceStrings())
+      {
+        ciface::Core::DeviceQualifier devq;
+        devq.FromString(device_str);
+
+        auto dev = g_controller_interface.FindDevice(devq);
+
+        auto future = std::async(std::launch::async, [this, devq, dev, device_str] {
+          return std::make_pair(
+              QString::fromStdString(device_str),
+              MappingCommon::DetectExpression(m_reference, dev.get(),
+                                              m_parent->GetController()->GetDefaultDevice()));
+        });
+
+        futures.push_back(std::move(future));
+      }
+
+      bool done = false;
+
+      while (!done)
+      {
+        for (auto& future : futures)
+        {
+          const auto status = future.wait_for(std::chrono::milliseconds(10));
+          if (status == std::future_status::ready)
+          {
+            const auto pair = future.get();
+
+            done = true;
+
+            if (pair.second.isEmpty())
+              break;
+
+            expr = QStringLiteral("`%1:%2`")
+                       .arg(pair.first)
+                       .arg(pair.second.startsWith(QLatin1Char('`')) ? pair.second.mid(1) :
+                                                                       pair.second);
+            break;
+          }
+        }
+      }
+    }
+    else
+    {
+      const auto dev = m_parent->GetDevice();
+      expr = MappingCommon::DetectExpression(m_reference, dev.get(),
+                                             m_parent->GetController()->GetDefaultDevice());
+    }
 
     releaseMouse();
     releaseKeyboard();
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp b/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp
index 814d0070ae..3f8fd13d1b 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.cpp
@@ -222,10 +222,18 @@ void MappingWindow::OnSaveProfilePressed()
 
 void MappingWindow::OnDeviceChanged(int index)
 {
+  if (IsMappingAllDevices())
+    return;
+
   const auto device = m_devices_combo->currentText().toStdString();
   m_controller->SetDefaultDevice(device);
 }
 
+bool MappingWindow::IsMappingAllDevices() const
+{
+  return m_devices_combo->currentIndex() == m_devices_combo->count() - 1;
+}
+
 void MappingWindow::RefreshDevices()
 {
   m_devices_combo->clear();
@@ -245,6 +253,8 @@ void MappingWindow::RefreshDevices()
         m_devices_combo->addItem(QString::fromStdString(name));
     }
 
+    m_devices_combo->addItem(tr("All devices"));
+
     m_devices_combo->setCurrentIndex(0);
   });
 }
diff --git a/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h b/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h
index 27c36e1726..c0a9f47af2 100644
--- a/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h
+++ b/Source/Core/DolphinQt2/Config/Mapping/MappingWindow.h
@@ -52,6 +52,7 @@ public:
   std::shared_ptr<ciface::Core::Device> GetDevice() const;
   ControllerEmu::EmulatedController* GetController() const;
   bool IsIterativeInput() const;
+  bool IsMappingAllDevices() const;
 
 signals:
   void Update();