From 0d783f0869eaef163a318ab4d79744f592ed1cc5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9o=20Lam?= <leo@innovatetechnologi.es>
Date: Mon, 13 Jun 2016 11:11:47 +0200
Subject: ControllerInterface: Add a way to register callbacks

This adds RegisterHotplugCallback() to register a callback which will
be invoked by the input backends' hotplug threads when there is a new
device, so that Core (GCKeyboard, GCPad, Wiimote, Hotkey) can reload
the configuration without adding a dependency to Core from InputCommon.
---
 .../ControllerInterface/ControllerInterface.cpp    | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'Source/Core/InputCommon/ControllerInterface/ControllerInterface.cpp')

diff --git a/Source/Core/InputCommon/ControllerInterface/ControllerInterface.cpp b/Source/Core/InputCommon/ControllerInterface/ControllerInterface.cpp
index 700d390b92..cc80b7b234 100644
--- a/Source/Core/InputCommon/ControllerInterface/ControllerInterface.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/ControllerInterface.cpp
@@ -172,6 +172,28 @@ void ControllerInterface::UpdateInput()
     d->UpdateInput();
 }
 
+//
+// RegisterHotplugCallback
+//
+// Register a callback to be called from the input backends' hotplug thread
+// when there is a new device
+//
+void ControllerInterface::RegisterHotplugCallback(std::function<void()> callback)
+{
+  m_hotplug_callbacks.emplace_back(std::move(callback));
+}
+
+//
+// InvokeHotplugCallbacks
+//
+// Invoke all callbacks that were registered
+//
+void ControllerInterface::InvokeHotplugCallbacks() const
+{
+  for (const auto& callback : m_hotplug_callbacks)
+    callback();
+}
+
 //
 // InputReference :: State
 //
-- 
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