Converts ash to use aura-mus

ash/mus/root_window_controller.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 "ash/mus/root_window_controller.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <map>
 #include <sstream>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "ash/common/shelf/shelf_layout_manager.h"
 #include "ash/common/wm/container_finder.h"
 #include "ash/common/wm/dock/docked_window_layout_manager.h"
 #include "ash/common/wm/panels/panel_layout_manager.h"
 #include "ash/common/wm/root_window_layout_manager.h"
 #include "ash/mus/bridge/wm_root_window_controller_mus.h"
 #include "ash/mus/bridge/wm_shelf_mus.h"
 #include "ash/mus/bridge/wm_shell_mus.h"
 #include "ash/mus/bridge/wm_window_mus.h"
 #include "ash/mus/non_client_frame_controller.h"
 #include "ash/mus/property_util.h"
-#include "ash/mus/screenlock_layout.h"
+#include "ash/mus/screen_mus.h"
 #include "ash/mus/window_manager.h"
 #include "ash/public/cpp/shell_window_ids.h"
+#include "ash/wm/stacking_controller.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "mojo/public/cpp/bindings/type_converter.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/ui/common/switches.h"
 #include "services/ui/common/util.h"
-#include "services/ui/public/cpp/property_type_converters.h"
-#include "services/ui/public/cpp/window.h"
-#include "services/ui/public/cpp/window_property.h"
-#include "services/ui/public/cpp/window_tree_client.h"
+#include "ui/aura/client/aura_constants.h"
+#include "ui/aura/mus/property_converter.h"
+#include "ui/aura/mus/property_utils.h"
+#include "ui/aura/mus/window_tree_client.h"
+#include "ui/aura/mus/window_tree_host_mus.h"
+#include "ui/aura/window.h"
+#include "ui/base/ui_base_types.h"
 #include "ui/display/display_list.h"
-#include "ui/display/screen_base.h"
 
 namespace ash {
 namespace mus {
 
-RootWindowController::RootWindowController(WindowManager* window_manager,
-                                           ui::Window* root,
-                                           const display::Display& display)
+RootWindowController::RootWindowController(
+    WindowManager* window_manager,
+    std::unique_ptr<aura::WindowTreeHostMus> window_tree_host,
+    const display::Display& display)
     : window_manager_(window_manager),
-      root_(root),
+      window_tree_host_(std::move(window_tree_host)),
       window_count_(0),
       display_(display),
       wm_shelf_(base::MakeUnique<WmShelfMus>()) {
   wm_root_window_controller_ = base::MakeUnique<WmRootWindowControllerMus>(
       window_manager_->shell(), this);
   wm_root_window_controller_->CreateContainers();
   wm_root_window_controller_->CreateLayoutManagers();
-  CreateLayoutManagers();
 
-  disconnected_app_handler_.reset(new DisconnectedAppHandler(root));
+  parenting_client_ = base::MakeUnique<StackingController>();
+  aura::client::SetWindowParentingClient(root(), parenting_client_.get());
+
+  disconnected_app_handler_.reset(new DisconnectedAppHandler(root()));
 
   // Force a layout of the root, and its children, RootWindowLayout handles
   // both.
   wm_root_window_controller_->root_window_layout_manager()->OnWindowResized();
 
   for (size_t i = 0; i < kNumActivatableShellWindowIds; ++i) {
     window_manager_->window_manager_client()->AddActivationParent(
-        GetWindowByShellWindowId(kActivatableShellWindowIds[i])->mus_window());
+        GetWindowByShellWindowId(kActivatableShellWindowIds[i])->aura_window());
   }
 }
 
 RootWindowController::~RootWindowController() {
   Shutdown();
-  root_->Destroy();
+  wm_shelf_.reset();

[James Cook, 2016/12/05 19:21:44]

I presume there's an ordering dependency in destruction here. If so, comment
what it is.

[sky, 2016/12/05 21:39:20]

Done.

+  wm_root_window_controller_.reset();
+  window_tree_host_.reset();
 }
 
 void RootWindowController::Shutdown() {
   // NOTE: Shutdown() may be called multiple times.
   wm_root_window_controller_->ResetRootForNewWindowsIfNecessary();
   wm_root_window_controller_->CloseChildWindows();
 }
 
 service_manager::Connector* RootWindowController::GetConnector() {
   return window_manager_->connector();
 }
 
-ui::Window* RootWindowController::NewTopLevelWindow(
+aura::Window* RootWindowController::root() {
+  return window_tree_host_->window();
+}
+
+const aura::Window* RootWindowController::root() const {
+  return window_tree_host_->window();
+}
+
+aura::Window* RootWindowController::NewTopLevelWindow(
+    ui::mojom::WindowType window_type,
     std::map<std::string, std::vector<uint8_t>>* properties) {
-  const bool provide_non_client_frame =
-      GetWindowType(*properties) == ui::mojom::WindowType::WINDOW ||
-      GetWindowType(*properties) == ui::mojom::WindowType::PANEL;
-  if (provide_non_client_frame)
-    (*properties)[ui::mojom::kWaitForUnderlay_Property].clear();
+  // TODO(sky): constrain and validate properties.
 
-  // TODO(sky): constrain and validate properties before passing to server.
-  ui::Window* window = root_->window_tree()->NewWindow(properties);
-  window->SetBounds(CalculateDefaultBounds(window));
-
-  ui::Window* container_window = nullptr;
-  int container_id = kShellWindowId_Invalid;
-  if (GetRequestedContainer(window, &container_id)) {
-    container_window = GetWindowByShellWindowId(container_id)->mus_window();
+  int32_t container_id = kShellWindowId_Invalid;
+  aura::Window* context = nullptr;
+  aura::Window* container_window = nullptr;
+  if (GetInitialContainerId(*properties, &container_id)) {
+    container_window = GetWindowByShellWindowId(container_id)->aura_window();
   } else {
-    gfx::Point origin = wm_root_window_controller_->ConvertPointToScreen(
-        WmWindowMus::Get(root_), gfx::Point());
-    gfx::Rect bounds_in_screen(origin, window->bounds().size());
-    container_window = WmWindowMus::GetMusWindow(wm::GetDefaultParent(
-        WmWindowMus::Get(root_), WmWindowMus::Get(window), bounds_in_screen));
-  }
-  DCHECK(WmWindowMus::Get(container_window)->IsContainer());
-
-  if (provide_non_client_frame) {
-    NonClientFrameController::Create(container_window, window,
-                                     window_manager_->window_manager_client());
-  } else {
-    container_window->AddChild(window);
+    context = window_tree_host_->window();

[James Cook, 2016/12/05 19:21:44]

Using root() here might be a little clearer.

[sky, 2016/12/05 21:39:19]

Done.

   }
 
+  gfx::Rect bounds = CalculateDefaultBounds(container_window, properties);
   window_count_++;
 
+  const bool provide_non_client_frame =
+      window_type == ui::mojom::WindowType::WINDOW ||
+      window_type == ui::mojom::WindowType::PANEL;
+  if (provide_non_client_frame) {
+    (*properties)[ui::mojom::kWaitForUnderlay_Property].clear();

[James Cook, 2016/12/05 19:21:44]

I know you didn't change this, but what's it for / how does this work?

[sky, 2016/12/05 21:39:20]

It's for mus to make sure mus has both parts of the window before drawing it.

+    // See NonClientFrameController for details on lifetime.
+    NonClientFrameController* non_client_frame_controller =
+        new NonClientFrameController(container_window, context, bounds,
+                                     window_type, properties, window_manager_);
+    return non_client_frame_controller->window();
+  }
+
+  aura::Window* window = new aura::Window(nullptr);
+  aura::SetWindowType(window, window_type);
+  // Apply properties before Init(), that way they are sent to the server at
+  // the time the window is created.
+  aura::PropertyConverter* property_converter =
+      window_manager_->property_converter();
+  for (auto& property_pair : *properties) {
+    property_converter->SetPropertyFromTransportValue(
+        window, property_pair.first, &property_pair.second);
+  }
+  window->Init(ui::LAYER_TEXTURED);
+  window->SetBounds(bounds);
+
+  if (container_window) {
+    container_window->AddChild(window);
+  } else {
+    WmWindowMus* root = WmWindowMus::Get(window_tree_host_->window());

[James Cook, 2016/12/05 19:21:44]

ditto, might be clearer to call root()

[sky, 2016/12/05 21:39:19]

Done.

+    gfx::Point origin =
+        wm_root_window_controller_->ConvertPointToScreen(root, gfx::Point());
+    gfx::Rect bounds_in_screen(origin, bounds.size());
+    static_cast<WmWindowMus*>(
+        ash::wm::GetDefaultParent(WmWindowMus::Get(context),
+                                  WmWindowMus::Get(window), bounds_in_screen))
+        ->aura_window()
+        ->AddChild(window);
+  }
   return window;
 }
 
 WmWindowMus* RootWindowController::GetWindowByShellWindowId(int id) {
   return WmWindowMus::AsWmWindowMus(
-      WmWindowMus::Get(root_)->GetChildByShellWindowId(id));
+      WmWindowMus::Get(root())->GetChildByShellWindowId(id));
 }
 
 void RootWindowController::SetWorkAreaInests(const gfx::Insets& insets) {
   gfx::Rect old_work_area = display_.work_area();
   display_.UpdateWorkAreaFromInsets(insets);
 
   if (old_work_area == display_.work_area())
     return;
 
   window_manager_->screen()->display_list().UpdateDisplay(display_);
 
   // Push new display insets to service:ui if we have a connection.
   auto* display_controller = window_manager_->GetDisplayController();
   if (display_controller)
     display_controller->SetDisplayWorkArea(display_.id(),
                                            display_.bounds().size(), insets);
 }
 
 void RootWindowController::SetDisplay(const display::Display& display) {
   DCHECK_EQ(display.id(), display_.id());
   display_ = display;
   window_manager_->screen()->display_list().UpdateDisplay(display_);
 }
 
 gfx::Rect RootWindowController::CalculateDefaultBounds(
-    ui::Window* window) const {
-  if (window->HasSharedProperty(
-          ui::mojom::WindowManager::kInitialBounds_Property)) {
-    return window->GetSharedProperty<gfx::Rect>(
-        ui::mojom::WindowManager::kInitialBounds_Property);
-  }
+    aura::Window* container_window,
+    const std::map<std::string, std::vector<uint8_t>>* properties) const {
+  gfx::Rect requested_bounds;
+  if (GetInitialBounds(*properties, &requested_bounds))
+    return requested_bounds;
 
-  if (GetWindowShowState(window) == ui::mojom::ShowState::FULLSCREEN) {
-    return gfx::Rect(0, 0, root_->bounds().width(), root_->bounds().height());
+  auto show_state_iter =
+      properties->find(ui::mojom::WindowManager::kShowState_Property);
+  if (show_state_iter != properties->end()) {
+    aura::PropertyConverter::PrimitiveType show_state = 0;
+    if (window_manager_->property_converter()
+            ->GetPropertyValueFromTransportValue(
+                ui::mojom::WindowManager::kShowState_Property,
+                show_state_iter->second, &show_state) &&
+        static_cast<ui::WindowShowState>(show_state) ==
+            ui::SHOW_STATE_FULLSCREEN) {

[James Cook, 2016/12/05 19:21:44]

nit: This if() is ugly. Would it help to cache property_converter() in a local,
or use "using ui::mojom::WindowManager"?

[sky, 2016/12/05 21:39:19]

Well, I made this function easier to parse, but I'm not sure if I just pushed
the unreadability around. Any better?

[James Cook, 2016/12/05 22:56:34]

Better, one other idea above.

+      gfx::Rect bounds(0, 0, root()->bounds().width(),
+                       root()->bounds().height());
+      if (!container_window) {

[James Cook, 2016/12/05 19:21:44]

Why is fullscreen not using the root window bounds like it was before? Is this a
screen vs. root window coords thing? Or was the code wrong before?

[sky, 2016/12/05 21:39:19]

It's because of differences in how NativeWidgetAura parents and treats
coordinates (the new code) vs how NativeWidgetMus was doing it.

+        bounds.Offset(display_.bounds().origin().x(),
+                      display_.bounds().origin().y());
+      }
+      return bounds;
+    }
   }
 
   int width, height;
-  const gfx::Size pref = GetWindowPreferredSize(window);
-  if (pref.IsEmpty()) {
-    width = root_->bounds().width() - 240;
-    height = root_->bounds().height() - 240;
-  } else {
+  gfx::Size pref;
+  if (GetWindowPreferredSize(*properties, &pref) && !pref.IsEmpty()) {
     // TODO(sky): likely want to constrain more than root size.
-    const gfx::Size max_size = root_->bounds().size();
+    const gfx::Size max_size = root()->bounds().size();
     width = std::max(0, std::min(max_size.width(), pref.width()));
     height = std::max(0, std::min(max_size.height(), pref.height()));
+  } else {
+    width = root()->bounds().width() - 240;
+    height = root()->bounds().height() - 240;
   }
   return gfx::Rect(40 + (window_count_ % 4) * 40, 40 + (window_count_ % 4) * 40,
                    width, height);
 }
 
-void RootWindowController::CreateLayoutManagers() {
-  // Override the default layout managers for certain containers.
-  WmWindowMus* lock_screen_container =
-      GetWindowByShellWindowId(kShellWindowId_LockScreenContainer);
-  layout_managers_[lock_screen_container->mus_window()].reset(
-      new ScreenlockLayout(lock_screen_container->mus_window()));
-}
-
 }  // namespace mus
 }  // namespace ash