Move global event filter to Platform::Integration on Windows.

Telegram/SourceFiles/platform/platform_integration.cpp

@@ -0,0 +1,43 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "platform/platform_integration.h"
+
+#ifdef Q_OS_MAC
+#include "platform/mac/integration_mac.h"
+#elif defined Q_OS_UNIX // Q_OS_MAC
+#include "platform/linux/integration_linux.h"
+#elif defined Q_OS_WINRT || defined Q_OS_WIN // Q_OS_MAC || Q_OS_UNIX
+#include "platform/win/integration_win.h"
+#endif // Q_OS_MAC || Q_OS_UNIX || Q_OS_WINRT || Q_OS_WIN
+
+namespace Platform {
+namespace {
+
+Integration *GlobalInstance/* = nullptr*/;
+
+} // namespace
+
+Integration::~Integration() {
+	GlobalInstance = nullptr;
+}
+
+std::unique_ptr<Integration> Integration::Create() {
+	Expects(GlobalInstance == nullptr);
+
+	auto result = CreateIntegration();
+	GlobalInstance = result.get();
+	return result;
+}
+
+Integration &Integration::Instance() {
+	Expects(GlobalInstance != nullptr);
+
+	return *GlobalInstance;
+};
+
+} // namespace Platform