c++ / mojo changes for 'external window mode'

services/ui/ws/window_tree_host_factory.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "services/ui/ws/window_tree_host_factory.h"
 
+#include "services/ui/ws/default_access_policy.h"
 #include "services/ui/ws/display.h"
 #include "services/ui/ws/display_binding.h"
 #include "services/ui/ws/window_server.h"
+#include "services/ui/ws/window_tree.h"
+#include "services/ui/ws/window_tree_binding.h"
 
 namespace ui {
 namespace ws {
 
 WindowTreeHostFactory::WindowTreeHostFactory(WindowServer* window_server,
                                              const UserId& user_id)
     : window_server_(window_server), user_id_(user_id) {
   platform_display_init_params_.metrics.bounds.set_width(1024);
   platform_display_init_params_.metrics.bounds.set_height(768);
   platform_display_init_params_.metrics.pixel_size.SetSize(1024, 768);
   platform_display_init_params_.metrics.device_scale_factor = 1.0f;
 }
 
 WindowTreeHostFactory::~WindowTreeHostFactory() {}
 
-void WindowTreeHostFactory::AddBinding(
-    mojom::WindowTreeHostFactoryRequest request) {
+void WindowTreeHostFactory::Init(mojom::WindowTreeHostFactoryRequest request,
+                                 mojom::WindowTreeRequest tree_request,
+                                 mojom::WindowTreeClientPtr tree_client) {
   bindings_.AddBinding(this, std::move(request));
+
+  std::unique_ptr<ws::WindowTree> tree(
+      new ws::WindowTree(window_server_, user_id_, nullptr /*ServerWindow*/,
+                         base::WrapUnique(new DefaultAccessPolicy)));
+
+  std::unique_ptr<ws::DefaultWindowTreeBinding> tree_binding(
+      new ws::DefaultWindowTreeBinding(tree.get(), window_server_,
+                                       std::move(tree_request),
+                                       std::move(tree_client)));
+
+  tree_ = tree.get();
+
+  // Pass nullptr as mojom::WindowTreePtr (3rd paramaneter), because in external

[fwang, 2017/02/27 20:06:50]

parameter

[tonikitoo, 2017/03/01 05:05:44]

Done.

+  // window mode, the WindowTreePtr is created on the aura/WindowTreeClient
+  // side.
+  //
+  // NOTE: This call to ::AddTree calls ::Init. However, it wont trigger a

[fwang, 2017/02/28 08:23:53]

won't

[tonikitoo, 2017/03/01 05:05:44]

Done.

+  // ::OnEmbed call because the WindowTree instance was created above passing
+  // 'nullptr' as the ServerWindow, hence there is no 'root' yet.
+  window_server_->AddTree(std::move(tree), std::move(tree_binding),
+                          nullptr /*mojom::WindowTreePtr*/);
 }
 
 void WindowTreeHostFactory::CreateWindowTreeHost(
-    mojom::WindowTreeHostRequest host,
-    mojom::WindowTreeClientPtr tree_client) {
+    mojom::WindowTreeHostRequest tree_host_request) {
   Display* display = new Display(window_server_);
   std::unique_ptr<DisplayBindingImpl> display_binding(
-      new DisplayBindingImpl(std::move(host), display, user_id_,
-                             std::move(tree_client), window_server_));
+      new DisplayBindingImpl(std::move(tree_host_request), display, user_id_,
+                             nullptr /* tree_client */, window_server_));

[fwang, 2017/02/28 08:23:53]

ditto about /* */

   display->Init(platform_display_init_params_, std::move(display_binding));
 }
 
 }  // namespace ws
 }  // namespace ui