Moves mash/wm into ash/mus

mash/wm/user_window_controller_impl.cc

-// Copyright 2015 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 "mash/wm/user_window_controller_impl.h"
-
-#include "ash/public/interfaces/container.mojom.h"
-#include "components/mus/public/cpp/property_type_converters.h"
-#include "components/mus/public/cpp/window.h"
-#include "components/mus/public/cpp/window_property.h"
-#include "components/mus/public/cpp/window_tree_client.h"
-#include "mash/wm/property_util.h"
-#include "mash/wm/root_window_controller.h"
-#include "mojo/common/common_type_converters.h"
-#include "ui/resources/grit/ui_resources.h"
-
-MUS_DECLARE_WINDOW_PROPERTY_TYPE(uint32_t);
-
-namespace mash {
-namespace wm {
-
-// Key used for storing identifier sent to clients for windows.
-MUS_DEFINE_LOCAL_WINDOW_PROPERTY_KEY(uint32_t, kUserWindowIdKey, 0u);
-
-namespace {
-
-// Returns |window|, or an ancestor thereof, parented to |container|, or null.
-mus::Window* GetTopLevelWindow(mus::Window* window, mus::Window* container) {
-  while (window && window->parent() != container)
-    window = window->parent();
-  return window;
-}
-
-// Get a UserWindow struct from a mus::Window.
-ash::mojom::UserWindowPtr GetUserWindow(mus::Window* window) {
-  ash::mojom::UserWindowPtr user_window(ash::mojom::UserWindow::New());
-  DCHECK_NE(0u, window->GetLocalProperty(kUserWindowIdKey));
-  user_window->window_id = window->GetLocalProperty(kUserWindowIdKey);
-  user_window->window_title = mojo::String::From(GetWindowTitle(window));
-  user_window->window_app_icon = GetWindowAppIcon(window);
-  user_window->window_app_id = mojo::String::From(GetAppID(window));
-  user_window->ignored_by_shelf = GetWindowIgnoredByShelf(window);
-  mus::Window* focused = window->window_tree()->GetFocusedWindow();
-  focused = GetTopLevelWindow(focused, window->parent());
-  user_window->window_has_focus = focused == window;
-  return user_window;
-}
-
-}  // namespace
-
-// Observes property changes on user windows. UserWindowControllerImpl uses
-// this separate observer to avoid observing duplicate tree change
-// notifications.
-class WindowPropertyObserver : public mus::WindowObserver {
- public:
-  explicit WindowPropertyObserver(UserWindowControllerImpl* controller)
-      : controller_(controller) {}
-  ~WindowPropertyObserver() override {}
-
- private:
-  // mus::WindowObserver:
-  void OnWindowSharedPropertyChanged(
-      mus::Window* window,
-      const std::string& name,
-      const std::vector<uint8_t>* old_data,
-      const std::vector<uint8_t>* new_data) override {
-    if (!controller_->user_window_observer())
-      return;
-    if (name == mus::mojom::WindowManager::kWindowTitle_Property) {
-      controller_->user_window_observer()->OnUserWindowTitleChanged(
-          window->GetLocalProperty(kUserWindowIdKey),
-          mojo::String::From(GetWindowTitle(window)));
-    } else if (name == mus::mojom::WindowManager::kWindowAppIcon_Property) {
-      controller_->user_window_observer()->OnUserWindowAppIconChanged(
-          window->GetLocalProperty(kUserWindowIdKey),
-          new_data ? mojo::Array<uint8_t>::From(*new_data)
-                   : mojo::Array<uint8_t>());
-    }
-  }
-
-  UserWindowControllerImpl* controller_;
-  DISALLOW_COPY_AND_ASSIGN(WindowPropertyObserver);
-};
-
-UserWindowControllerImpl::UserWindowControllerImpl()
-    : root_controller_(nullptr) {}
-
-UserWindowControllerImpl::~UserWindowControllerImpl() {
-  if (!root_controller_)
-    return;
-
-  mus::Window* user_container = GetUserWindowContainer();
-  if (!user_container)
-    return;
-
-  RemoveObservers(user_container);
-}
-
-void UserWindowControllerImpl::Initialize(
-    RootWindowController* root_controller) {
-  DCHECK(root_controller);
-  DCHECK(!root_controller_);
-  root_controller_ = root_controller;
-  GetUserWindowContainer()->AddObserver(this);
-  GetUserWindowContainer()->window_tree()->AddObserver(this);
-  window_property_observer_.reset(new WindowPropertyObserver(this));
-  for (mus::Window* window : GetUserWindowContainer()->children()) {
-    AssignIdIfNecessary(window);
-    window->AddObserver(window_property_observer_.get());
-  }
-}
-
-void UserWindowControllerImpl::AssignIdIfNecessary(mus::Window* window) {
-  if (window->GetLocalProperty(kUserWindowIdKey) == 0u)
-    window->SetLocalProperty(kUserWindowIdKey, next_id_++);
-}
-
-void UserWindowControllerImpl::RemoveObservers(mus::Window* user_container) {
-  user_container->RemoveObserver(this);
-  user_container->window_tree()->RemoveObserver(this);
-  for (auto iter : user_container->children())
-    iter->RemoveObserver(window_property_observer_.get());
-}
-
-mus::Window* UserWindowControllerImpl::GetUserWindowById(uint32_t id) {
-  for (mus::Window* window : GetUserWindowContainer()->children()) {
-    if (window->GetLocalProperty(kUserWindowIdKey) == id)
-      return window;
-  }
-  return nullptr;
-}
-
-mus::Window* UserWindowControllerImpl::GetUserWindowContainer() const {
-  return root_controller_->GetWindowForContainer(
-      ash::mojom::Container::USER_PRIVATE_WINDOWS);
-}
-
-void UserWindowControllerImpl::OnTreeChanging(const TreeChangeParams& params) {
-  DCHECK(root_controller_);
-  if (params.new_parent == GetUserWindowContainer()) {
-    params.target->AddObserver(window_property_observer_.get());
-    AssignIdIfNecessary(params.target);
-    if (user_window_observer_)
-      user_window_observer_->OnUserWindowAdded(GetUserWindow(params.target));
-  } else if (params.old_parent == GetUserWindowContainer()) {
-    params.target->RemoveObserver(window_property_observer_.get());
-    if (user_window_observer_)
-      user_window_observer_->OnUserWindowRemoved(
-          params.target->GetLocalProperty(kUserWindowIdKey));
-  }
-}
-
-void UserWindowControllerImpl::OnWindowDestroying(mus::Window* window) {
-  if (window == GetUserWindowContainer())
-    RemoveObservers(window);
-}
-
-void UserWindowControllerImpl::OnWindowTreeFocusChanged(
-    mus::Window* gained_focus,
-    mus::Window* lost_focus) {
-  if (!user_window_observer_)
-    return;
-
-  // Treat focus in the user window hierarchy as focus of the top-level window.
-  gained_focus = GetTopLevelWindow(gained_focus, GetUserWindowContainer());
-  lost_focus = GetTopLevelWindow(lost_focus, GetUserWindowContainer());
-  if (gained_focus == lost_focus)
-    return;
-
-  if (lost_focus) {
-    user_window_observer_->OnUserWindowFocusChanged(
-        lost_focus->GetLocalProperty(kUserWindowIdKey), false);
-  }
-  if (gained_focus) {
-    user_window_observer_->OnUserWindowFocusChanged(
-        gained_focus->GetLocalProperty(kUserWindowIdKey), true);
-  }
-}
-
-void UserWindowControllerImpl::AddUserWindowObserver(
-    ash::mojom::UserWindowObserverPtr observer) {
-  // TODO(msw): Support multiple observers.
-  user_window_observer_ = std::move(observer);
-
-  const mus::Window::Children& windows = GetUserWindowContainer()->children();
-  mojo::Array<ash::mojom::UserWindowPtr> user_windows =
-      mojo::Array<ash::mojom::UserWindowPtr>::New(windows.size());
-  for (size_t i = 0; i < windows.size(); ++i)
-    user_windows[i] = GetUserWindow(windows[i]);
-  user_window_observer_->OnUserWindowObserverAdded(std::move(user_windows));
-}
-
-void UserWindowControllerImpl::FocusUserWindow(uint32_t window_id) {
-  mus::Window* window = GetUserWindowById(window_id);
-  if (window)
-    window->SetFocus();
-}
-
-}  // namespace wm
-}  // namespace mash