Move mus to //services/ui

components/mus/ws/display_manager.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 "components/mus/ws/display_manager.h"
-
-#include "base/memory/ptr_util.h"
-#include "components/mus/ws/display.h"
-#include "components/mus/ws/display_manager_delegate.h"
-#include "components/mus/ws/event_dispatcher.h"
-#include "components/mus/ws/server_window.h"
-#include "components/mus/ws/user_display_manager.h"
-#include "components/mus/ws/user_id_tracker.h"
-#include "components/mus/ws/window_manager_state.h"
-
-namespace mus {
-namespace ws {
-
-DisplayManager::DisplayManager(DisplayManagerDelegate* delegate,
-                               UserIdTracker* user_id_tracker)
-    // |next_root_id_| is used as the lower bits, so that starting at 0 is
-    // fine. |next_display_id_| is used by itself, so we start at 1 to reserve
-    // 0 as invalid.
-    : delegate_(delegate),
-      user_id_tracker_(user_id_tracker),
-      next_root_id_(0),
-      next_display_id_(1) {
-  user_id_tracker_->AddObserver(this);
-}
-
-DisplayManager::~DisplayManager() {
-  user_id_tracker_->RemoveObserver(this);
-  DestroyAllDisplays();
-}
-
-UserDisplayManager* DisplayManager::GetUserDisplayManager(
-    const UserId& user_id) {
-  if (!user_display_managers_.count(user_id)) {
-    user_display_managers_[user_id] =
-        base::WrapUnique(new UserDisplayManager(this, delegate_, user_id));
-  }
-  return user_display_managers_[user_id].get();
-}
-
-void DisplayManager::AddDisplay(Display* display) {
-  DCHECK_EQ(0u, pending_displays_.count(display));
-  pending_displays_.insert(display);
-}
-
-void DisplayManager::DestroyDisplay(Display* display) {
-  if (pending_displays_.count(display)) {
-    pending_displays_.erase(display);
-  } else {
-    for (const auto& pair : user_display_managers_)
-      pair.second->OnWillDestroyDisplay(display);
-
-    DCHECK(displays_.count(display));
-    displays_.erase(display);
-  }
-  delete display;
-
-  // If we have no more roots left, let the app know so it can terminate.
-  // TODO(sky): move to delegate/observer.
-  if (!displays_.size() && !pending_displays_.size())
-    delegate_->OnNoMoreDisplays();
-}
-
-void DisplayManager::DestroyAllDisplays() {
-  while (!pending_displays_.empty())
-    DestroyDisplay(*pending_displays_.begin());
-  DCHECK(pending_displays_.empty());
-
-  while (!displays_.empty())
-    DestroyDisplay(*displays_.begin());
-  DCHECK(displays_.empty());
-}
-
-std::set<const Display*> DisplayManager::displays() const {
-  std::set<const Display*> ret_value(displays_.begin(), displays_.end());
-  return ret_value;
-}
-
-void DisplayManager::OnDisplayUpdate(Display* display) {
-  for (const auto& pair : user_display_managers_)
-    pair.second->OnDisplayUpdate(display);
-}
-
-Display* DisplayManager::GetDisplayContaining(ServerWindow* window) {
-  return const_cast<Display*>(
-      static_cast<const DisplayManager*>(this)->GetDisplayContaining(window));
-}
-
-const Display* DisplayManager::GetDisplayContaining(
-    const ServerWindow* window) const {
-  while (window && window->parent())
-    window = window->parent();
-  for (Display* display : displays_) {
-    if (window == display->root_window())
-      return display;
-  }
-  return nullptr;
-}
-
-const WindowManagerDisplayRoot* DisplayManager::GetWindowManagerDisplayRoot(
-    const ServerWindow* window) const {
-  const ServerWindow* last = window;
-  while (window && window->parent()) {
-    last = window;
-    window = window->parent();
-  }
-  for (Display* display : displays_) {
-    if (window == display->root_window())
-      return display->GetWindowManagerDisplayRootWithRoot(last);
-  }
-  return nullptr;
-}
-
-WindowManagerDisplayRoot* DisplayManager::GetWindowManagerDisplayRoot(
-    const ServerWindow* window) {
-  return const_cast<WindowManagerDisplayRoot*>(
-      const_cast<const DisplayManager*>(this)->GetWindowManagerDisplayRoot(
-          window));
-}
-
-WindowId DisplayManager::GetAndAdvanceNextRootId() {
-  // TODO(sky): handle wrapping!
-  const uint16_t id = next_root_id_++;
-  DCHECK_LT(id, next_root_id_);
-  return RootWindowId(id);
-}
-
-uint32_t DisplayManager::GetAndAdvanceNextDisplayId() {
-  // TODO(sky): handle wrapping!
-  const uint32_t id = next_display_id_++;
-  DCHECK_LT(id, next_display_id_);
-  return id;
-}
-
-void DisplayManager::OnDisplayAcceleratedWidgetAvailable(Display* display) {
-  DCHECK_NE(0u, pending_displays_.count(display));
-  DCHECK_EQ(0u, displays_.count(display));
-  const bool is_first_display = displays_.empty();
-  displays_.insert(display);
-  pending_displays_.erase(display);
-  if (is_first_display)
-    delegate_->OnFirstDisplayReady();
-}
-
-void DisplayManager::OnActiveUserIdChanged(const UserId& previously_active_id,
-                                           const UserId& active_id) {
-  WindowManagerState* previous_window_manager_state =
-      delegate_->GetWindowManagerStateForUser(previously_active_id);
-  gfx::Point mouse_location_on_screen;
-  if (previous_window_manager_state) {
-    mouse_location_on_screen = previous_window_manager_state->event_dispatcher()
-                                   ->mouse_pointer_last_location();
-    previous_window_manager_state->Deactivate();
-  }
-
-  WindowManagerState* current_window_manager_state =
-      delegate_->GetWindowManagerStateForUser(active_id);
-  if (current_window_manager_state)
-    current_window_manager_state->Activate(mouse_location_on_screen);
-}
-
-}  // namespace ws
-}  // namespace mus