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diff --git a/src/type3_AndroidCloud/anbox-master/src/anbox/wm/multi_window_manager.cpp b/src/type3_AndroidCloud/anbox-master/src/anbox/wm/multi_window_manager.cpp
new file mode 100644
index 0000000..b48f5d2
--- /dev/null
+++ b/src/type3_AndroidCloud/anbox-master/src/anbox/wm/multi_window_manager.cpp
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2016 Simon Fels <morphis@gravedo.de>
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "anbox/application/database.h"
+#include "anbox/wm/multi_window_manager.h"
+#include "anbox/platform/base_platform.h"
+#include "anbox/bridge/android_api_stub.h"
+#include "anbox/logger.h"
+
+#include <algorithm>
+
+namespace anbox {
+namespace wm {
+MultiWindowManager::MultiWindowManager(const std::weak_ptr<platform::BasePlatform> &platform,
+                                       const std::shared_ptr<bridge::AndroidApiStub> &android_api_stub,
+                                       const std::shared_ptr<application::Database> &app_db)
+    : platform_(platform), android_api_stub_(android_api_stub), app_db_(app_db) {}
+
+MultiWindowManager::~MultiWindowManager() {}
+
+void MultiWindowManager::apply_window_state_update(const WindowState::List &updated,
+                                        const WindowState::List &removed) {
+  std::lock_guard<std::mutex> l(mutex_);
+
+  // Base on the update we get from the Android WindowManagerService we will
+  // create different window instances with the properties supplied. Incoming
+  // layer updates from SurfaceFlinger will be mapped later into those windows
+  // and eventually composited there via GLES (e.g. for popups, ..)
+
+  std::map<Task::Id, WindowState::List> task_updates;
+
+  for (const auto &window : updated) {
+    // Ignore all windows which are not part of the freeform task stack
+    if (window.stack() != Stack::Id::Freeform) continue;
+
+    // And also those which don't have a surface mapped at the moment
+    if (!window.has_surface()) continue;
+
+    // If we know that task already we first collect all window updates
+    // for it so we can apply all of them together.
+    auto w = windows_.find(window.task());
+    if (w != windows_.end()) {
+      auto t = task_updates.find(window.task());
+      if (t == task_updates.end())
+        task_updates.insert({window.task(), {window}});
+      else
+        task_updates[window.task()].push_back(window);
+      continue;
+    }
+
+    auto title = window.package_name();
+    auto app = app_db_->find_by_package(window.package_name());
+    if (app.valid())
+      title = app.name;
+
+    if (auto p = platform_.lock()) {
+      auto w = p->create_window(window.task(), window.frame(), title);
+      if (w) {
+        w->attach();
+        windows_.insert({window.task(), w});
+      } else {
+        // FIXME can we call this here safely or do we need to schedule the removal?
+        remove_task(window.task());
+      }
+    }
+  }
+
+  // Send updates we collected per task down to the corresponding window
+  // so that they can update themself.
+  for (const auto &u : task_updates) {
+    auto w = windows_.find(u.first);
+    if (w == windows_.end()) continue;
+
+    w->second->update_state(u.second);
+  }
+
+  // As final step we process all windows we need to remove as they
+  // got killed on the other side. We need to respect here that we
+  // also get removals for windows which are part of a task which is
+  // still in use by other windows.
+  for (const auto &window : removed) {
+    auto w = windows_.find(window.task());
+    if (w == windows_.end()) continue;
+
+    if (task_updates.find(window.task()) == task_updates.end()) {
+      auto platform_window = w->second;
+      platform_window->release();
+      windows_.erase(w);
+    }
+  }
+}
+
+std::shared_ptr<Window> MultiWindowManager::find_window_for_task(const Task::Id &task) {
+  std::lock_guard<std::mutex> l(mutex_);
+  for (const auto &w : windows_) {
+    if (w.second->task() == task) return w.second;
+  }
+  return nullptr;
+}
+
+void MultiWindowManager::resize_task(const Task::Id &task, const anbox::graphics::Rect &rect,
+                                      const std::int32_t &resize_mode) {
+  android_api_stub_->resize_task(task, rect, resize_mode);
+}
+
+void MultiWindowManager::set_focused_task(const Task::Id &task) {
+  android_api_stub_->set_focused_task(task);
+}
+
+void MultiWindowManager::remove_task(const Task::Id &task) {
+  android_api_stub_->remove_task(task);
+}
+}  // namespace wm
+}  // namespace anbox