Delete the ViewManager and WindowManager services.

services/view_manager/connection_manager.cc

-// Copyright 2014 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/view_manager/connection_manager.h"
-
-#include "base/logging.h"
-#include "base/stl_util.h"
-#include "mojo/converters/geometry/geometry_type_converters.h"
-#include "mojo/converters/input_events/input_events_type_converters.h"
-#include "mojo/public/interfaces/application/service_provider.mojom.h"
-#include "services/view_manager/client_connection.h"
-#include "services/view_manager/connection_manager_delegate.h"
-#include "services/view_manager/display_manager.h"
-#include "services/view_manager/server_view.h"
-#include "services/view_manager/view_coordinate_conversions.h"
-#include "services/view_manager/view_manager_service_impl.h"
-
-using mojo::ConnectionSpecificId;
-
-namespace view_manager {
-namespace {
-
-// Creates a copy of |view|. The copied view has |delegate| as its delegate.
-// This does not recurse.
-ServerView* CloneView(const ServerView* view, ServerViewDelegate* delegate) {
-  ServerView* clone = new ServerView(delegate, ClonedViewId());
-  clone->SetBounds(view->bounds());
-  clone->SetSurfaceId(view->surface_id());
-  clone->SetOpacity(view->opacity());
-  return clone;
-}
-
-// Creates copies of all the visible children of |parent|. Newly cloned views
-// are added to |cloned_parent| and have |delegate| as their delegate. The
-// stacking order of the cloned views is preseved.
-void CloneViewTree(const ServerView* parent,
-                   ServerView* cloned_parent,
-                   ServerViewDelegate* delegate) {
-  DCHECK(parent->visible());
-  for (const ServerView* to_clone : parent->GetChildren()) {
-    if (to_clone->visible()) {
-      ServerView* cloned = CloneView(to_clone, delegate);
-      cloned_parent->Add(cloned);
-      CloneViewTree(to_clone, cloned, delegate);
-    }
-  }
-}
-
-// Recurses through all the children of |view| moving any cloned views to
-// |new_parent| stacked above |stack_above|. |stack_above| is updated as views
-// are moved.
-void ReparentClonedViews(ServerView* new_parent,
-                         ServerView** stack_above,
-                         ServerView* view) {
-  if (view->id() == ClonedViewId()) {
-    const gfx::Rect new_bounds(ConvertRectBetweenViews(
-        view, new_parent, gfx::Rect(view->bounds().size())));
-    new_parent->Add(view);
-    new_parent->Reorder(view, *stack_above, mojo::OrderDirection::ABOVE);
-    view->SetBounds(new_bounds);
-    *stack_above = view;
-    return;
-  }
-
-  for (ServerView* child : view->GetChildren())
-    ReparentClonedViews(new_parent, stack_above, child);
-}
-
-// Deletes |view| and all its descendants.
-void DeleteViewTree(ServerView* view) {
-  for (ServerView* child : view->GetChildren())
-    DeleteViewTree(child);
-
-  delete view;
-}
-
-// TODO(sky): nuke, proof of concept.
-bool DecrementAnimatingViewsOpacity(ServerView* view) {
-  if (view->id() == ClonedViewId()) {
-    const float new_opacity = view->opacity() - .05f;
-    if (new_opacity <= 0)
-      DeleteViewTree(view);
-    else
-      view->SetOpacity(new_opacity);
-    return true;
-  }
-  bool ret_value = false;
-  for (ServerView* child : view->GetChildren()) {
-    if (DecrementAnimatingViewsOpacity(child))
-      ret_value = true;
-  }
-  return ret_value;
-}
-
-}  // namespace
-
-ConnectionManager::ScopedChange::ScopedChange(
-    ViewManagerServiceImpl* connection,
-    ConnectionManager* connection_manager,
-    bool is_delete_view)
-    : connection_manager_(connection_manager),
-      connection_id_(connection->id()),
-      is_delete_view_(is_delete_view) {
-  connection_manager_->PrepareForChange(this);
-}
-
-ConnectionManager::ScopedChange::~ScopedChange() {
-  connection_manager_->FinishChange();
-}
-
-ConnectionManager::ConnectionManager(ConnectionManagerDelegate* delegate,
-                                     scoped_ptr<DisplayManager> display_manager,
-                                     mojo::WindowManagerInternal* wm_internal)
-    : delegate_(delegate),
-      window_manager_client_connection_(nullptr),
-      next_connection_id_(1),
-      display_manager_(display_manager.Pass()),
-      root_(CreateServerView(RootViewId())),
-      wm_internal_(wm_internal),
-      current_change_(nullptr),
-      in_destructor_(false),
-      animation_runner_(base::TimeTicks::Now()) {
-  root_->SetBounds(gfx::Rect(800, 600));
-  root_->SetVisible(true);
-  display_manager_->Init(this);
-}
-
-ConnectionManager::~ConnectionManager() {
-  in_destructor_ = true;
-
-  STLDeleteValues(&connection_map_);
-  // All the connections should have been destroyed.
-  DCHECK(connection_map_.empty());
-  root_.reset();
-}
-
-ServerView* ConnectionManager::CreateServerView(const ViewId& id) {
-  ServerView* view = new ServerView(this, id);
-  view->AddObserver(this);
-  return view;
-}
-
-ConnectionSpecificId ConnectionManager::GetAndAdvanceNextConnectionId() {
-  const ConnectionSpecificId id = next_connection_id_++;
-  DCHECK_LT(id, next_connection_id_);
-  return id;
-}
-
-void ConnectionManager::OnConnectionError(ClientConnection* connection) {
-  if (connection == window_manager_client_connection_) {
-    window_manager_client_connection_ = nullptr;
-    delegate_->OnLostConnectionToWindowManager();
-    // Assume we've been destroyed.
-    return;
-  }
-
-  scoped_ptr<ClientConnection> connection_owner(connection);
-
-  connection_map_.erase(connection->service()->id());
-
-  // Notify remaining connections so that they can cleanup.
-  for (auto& pair : connection_map_) {
-    pair.second->service()->OnWillDestroyViewManagerServiceImpl(
-        connection->service());
-  }
-}
-
-void ConnectionManager::EmbedAtView(
-    ConnectionSpecificId creator_id,
-    const std::string& url,
-    const ViewId& view_id,
-    mojo::InterfaceRequest<mojo::ServiceProvider> services,
-    mojo::ServiceProviderPtr exposed_services) {
-  std::string creator_url;
-  ConnectionMap::const_iterator it = connection_map_.find(creator_id);
-  if (it != connection_map_.end())
-    creator_url = it->second->service()->url();
-
-  mojo::ViewManagerServicePtr service_ptr;
-  ClientConnection* client_connection =
-      delegate_->CreateClientConnectionForEmbedAtView(
-          this, GetProxy(&service_ptr), creator_id, creator_url, url, view_id);
-  AddConnection(client_connection);
-  client_connection->service()->Init(client_connection->client(),
-                                     service_ptr.Pass(), services.Pass(),
-                                     exposed_services.Pass());
-  OnConnectionMessagedClient(client_connection->service()->id());
-}
-
-void ConnectionManager::EmbedAtView(mojo::ConnectionSpecificId creator_id,
-                                    const ViewId& view_id,
-                                    mojo::ViewManagerClientPtr client) {
-  std::string creator_url;
-  ConnectionMap::const_iterator it = connection_map_.find(creator_id);
-  if (it != connection_map_.end())
-    creator_url = it->second->service()->url();
-
-  mojo::ViewManagerServicePtr service_ptr;
-  ClientConnection* client_connection =
-      delegate_->CreateClientConnectionForEmbedAtView(
-          this, GetProxy(&service_ptr), creator_id, creator_url, view_id,
-          client.Pass());
-  AddConnection(client_connection);
-  client_connection->service()->Init(client_connection->client(),
-                                     service_ptr.Pass(), nullptr, nullptr);
-  OnConnectionMessagedClient(client_connection->service()->id());
-}
-
-ViewManagerServiceImpl* ConnectionManager::GetConnection(
-    ConnectionSpecificId connection_id) {
-  ConnectionMap::iterator i = connection_map_.find(connection_id);
-  return i == connection_map_.end() ? nullptr : i->second->service();
-}
-
-ServerView* ConnectionManager::GetView(const ViewId& id) {
-  if (id == root_->id())
-    return root_.get();
-  ViewManagerServiceImpl* service = GetConnection(id.connection_id);
-  return service ? service->GetView(id) : nullptr;
-}
-
-void ConnectionManager::OnConnectionMessagedClient(ConnectionSpecificId id) {
-  if (current_change_)
-    current_change_->MarkConnectionAsMessaged(id);
-}
-
-bool ConnectionManager::DidConnectionMessageClient(
-    ConnectionSpecificId id) const {
-  return current_change_ && current_change_->DidMessageConnection(id);
-}
-
-const ViewManagerServiceImpl* ConnectionManager::GetConnectionWithRoot(
-    const ViewId& id) const {
-  for (auto& pair : connection_map_) {
-    if (pair.second->service()->IsRoot(id))
-      return pair.second->service();
-  }
-  return nullptr;
-}
-
-void ConnectionManager::SetWindowManagerClientConnection(
-    scoped_ptr<ClientConnection> connection) {
-  CHECK(!window_manager_client_connection_);
-  window_manager_client_connection_ = connection.release();
-  AddConnection(window_manager_client_connection_);
-  window_manager_client_connection_->service()->Init(
-      window_manager_client_connection_->client(), nullptr, nullptr, nullptr);
-}
-
-mojo::ViewManagerClient*
-ConnectionManager::GetWindowManagerViewManagerClient() {
-  CHECK(window_manager_client_connection_);
-  return window_manager_client_connection_->client();
-}
-
-bool ConnectionManager::CloneAndAnimate(const ViewId& view_id) {
-  ServerView* view = GetView(view_id);
-  if (!view || !view->IsDrawn(root_.get()) || view == root_.get())
-    return false;
-  if (!animation_timer_.IsRunning()) {
-    animation_timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(100),
-                           this, &ConnectionManager::DoAnimation);
-  }
-  ServerView* clone = CloneView(view, this);
-  CloneViewTree(view, clone, this);
-  view->parent()->Add(clone);
-  view->parent()->Reorder(clone, view, mojo::OrderDirection::ABOVE);
-  return true;
-}
-
-void ConnectionManager::ProcessViewBoundsChanged(const ServerView* view,
-                                                 const gfx::Rect& old_bounds,
-                                                 const gfx::Rect& new_bounds) {
-  for (auto& pair : connection_map_) {
-    pair.second->service()->ProcessViewBoundsChanged(
-        view, old_bounds, new_bounds, IsChangeSource(pair.first));
-  }
-}
-
-void ConnectionManager::ProcessViewportMetricsChanged(
-    const mojo::ViewportMetrics& old_metrics,
-    const mojo::ViewportMetrics& new_metrics) {
-  for (auto& pair : connection_map_) {
-    pair.second->service()->ProcessViewportMetricsChanged(
-        old_metrics, new_metrics, IsChangeSource(pair.first));
-  }
-}
-
-void ConnectionManager::ProcessWillChangeViewHierarchy(
-    const ServerView* view,
-    const ServerView* new_parent,
-    const ServerView* old_parent) {
-  for (auto& pair : connection_map_) {
-    pair.second->service()->ProcessWillChangeViewHierarchy(
-        view, new_parent, old_parent, IsChangeSource(pair.first));
-  }
-}
-
-void ConnectionManager::ProcessViewHierarchyChanged(
-    const ServerView* view,
-    const ServerView* new_parent,
-    const ServerView* old_parent) {
-  for (auto& pair : connection_map_) {
-    pair.second->service()->ProcessViewHierarchyChanged(
-        view, new_parent, old_parent, IsChangeSource(pair.first));
-  }
-}
-
-void ConnectionManager::ProcessViewReorder(
-    const ServerView* view,
-    const ServerView* relative_view,
-    const mojo::OrderDirection direction) {
-  for (auto& pair : connection_map_) {
-    pair.second->service()->ProcessViewReorder(view, relative_view, direction,
-                                               IsChangeSource(pair.first));
-  }
-}
-
-void ConnectionManager::ProcessViewDeleted(const ViewId& view) {
-  for (auto& pair : connection_map_) {
-    pair.second->service()->ProcessViewDeleted(view,
-                                               IsChangeSource(pair.first));
-  }
-}
-
-void ConnectionManager::PrepareForChange(ScopedChange* change) {
-  // Should only ever have one change in flight.
-  CHECK(!current_change_);
-  current_change_ = change;
-}
-
-void ConnectionManager::FinishChange() {
-  // PrepareForChange/FinishChange should be balanced.
-  CHECK(current_change_);
-  current_change_ = NULL;
-}
-
-void ConnectionManager::DoAnimation() {
-  if (!DecrementAnimatingViewsOpacity(root()))
-    animation_timer_.Stop();
-}
-
-void ConnectionManager::AddConnection(ClientConnection* connection) {
-  DCHECK_EQ(0u, connection_map_.count(connection->service()->id()));
-  connection_map_[connection->service()->id()] = connection;
-}
-
-void ConnectionManager::PrepareToDestroyView(ServerView* view) {
-  if (!in_destructor_ && root_->Contains(view) && view != root_.get() &&
-      view->id() != ClonedViewId()) {
-    // We're about to destroy a view. Any cloned views need to be reparented
-    // else the animation would no longer be visible. By moving to a visible
-    // view, view->parent(), we ensure the animation is still visible.
-    ServerView* parent_above = view;
-    ReparentClonedViews(view->parent(), &parent_above, view);
-  }
-
-  animation_runner_.CancelAnimationForView(view);
-}
-
-void ConnectionManager::PrepareToChangeViewHierarchy(ServerView* view,
-                                                     ServerView* new_parent,
-                                                     ServerView* old_parent) {
-  if (view->id() == ClonedViewId() || in_destructor_)
-    return;
-
-  if (root_->Contains(view) && view != root_.get()) {
-    // We're about to reparent a view. Any cloned views need to be reparented
-    // else the animation may be effected in unusual ways. For example, the view
-    // could move to a new location such that the animation is entirely clipped.
-    // By moving to view->parent() we ensure the animation is still visible.
-    ServerView* parent_above = view;
-    ReparentClonedViews(view->parent(), &parent_above, view);
-  }
-
-  animation_runner_.CancelAnimationForView(view);
-}
-
-void ConnectionManager::PrepareToChangeViewVisibility(ServerView* view) {
-  if (in_destructor_)
-    return;
-
-  if (view != root_.get() && view->id() != ClonedViewId() &&
-      root_->Contains(view) && view->IsDrawn(root_.get())) {
-    // We're about to hide |view|, this would implicitly make any cloned views
-    // hide too. Reparent so that animations are still visible.
-    ServerView* parent_above = view;
-    ReparentClonedViews(view->parent(), &parent_above, view);
-  }
-
-  const bool is_parent_drawn =
-      view->parent() && view->parent()->IsDrawn(root_.get());
-  if (!is_parent_drawn || !view->visible())
-    animation_runner_.CancelAnimationForView(view);
-}
-
-void ConnectionManager::OnScheduleViewPaint(const ServerView* view) {
-  if (!in_destructor_)
-    display_manager_->SchedulePaint(view, gfx::Rect(view->bounds().size()));
-}
-
-void ConnectionManager::OnViewDestroyed(ServerView* view) {
-  if (!in_destructor_)
-    ProcessViewDeleted(view->id());
-}
-
-void ConnectionManager::OnWillChangeViewHierarchy(ServerView* view,
-                                                  ServerView* new_parent,
-                                                  ServerView* old_parent) {
-  if (view->id() == ClonedViewId() || in_destructor_)
-    return;
-
-  ProcessWillChangeViewHierarchy(view, new_parent, old_parent);
-}
-
-void ConnectionManager::OnViewHierarchyChanged(ServerView* view,
-                                               ServerView* new_parent,
-                                               ServerView* old_parent) {
-  if (in_destructor_)
-    return;
-
-  ProcessViewHierarchyChanged(view, new_parent, old_parent);
-
-  // TODO(beng): optimize.
-  if (old_parent) {
-    display_manager_->SchedulePaint(old_parent,
-                                    gfx::Rect(old_parent->bounds().size()));
-  }
-  if (new_parent) {
-    display_manager_->SchedulePaint(new_parent,
-                                    gfx::Rect(new_parent->bounds().size()));
-  }
-}
-
-void ConnectionManager::OnViewBoundsChanged(ServerView* view,
-                                            const gfx::Rect& old_bounds,
-                                            const gfx::Rect& new_bounds) {
-  if (in_destructor_)
-    return;
-
-  ProcessViewBoundsChanged(view, old_bounds, new_bounds);
-  if (!view->parent())
-    return;
-
-  // TODO(sky): optimize this.
-  display_manager_->SchedulePaint(view->parent(), old_bounds);
-  display_manager_->SchedulePaint(view->parent(), new_bounds);
-}
-
-void ConnectionManager::OnViewReordered(ServerView* view,
-                                        ServerView* relative,
-                                        mojo::OrderDirection direction) {
-  if (!in_destructor_)
-    display_manager_->SchedulePaint(view, gfx::Rect(view->bounds().size()));
-}
-
-void ConnectionManager::OnWillChangeViewVisibility(ServerView* view) {
-  if (in_destructor_)
-    return;
-
-  // Need to repaint if the view was drawn (which means it's in the process of
-  // hiding) or the view is transitioning to drawn.
-  if (view->IsDrawn(root_.get()) || (!view->visible() && view->parent() &&
-                                     view->parent()->IsDrawn(root_.get()))) {
-    display_manager_->SchedulePaint(view->parent(), view->bounds());
-  }
-
-  for (auto& pair : connection_map_) {
-    pair.second->service()->ProcessWillChangeViewVisibility(
-        view, IsChangeSource(pair.first));
-  }
-}
-
-void ConnectionManager::OnViewSharedPropertyChanged(
-    ServerView* view,
-    const std::string& name,
-    const std::vector<uint8_t>* new_data) {
-  for (auto& pair : connection_map_) {
-    pair.second->service()->ProcessViewPropertyChanged(
-        view, name, new_data, IsChangeSource(pair.first));
-  }
-}
-
-void ConnectionManager::DispatchInputEventToView(mojo::Id transport_view_id,
-                                                 mojo::EventPtr event) {
-  const ViewId view_id(ViewIdFromTransportId(transport_view_id));
-
-  ViewManagerServiceImpl* connection = GetConnectionWithRoot(view_id);
-  if (!connection)
-    connection = GetConnection(view_id.connection_id);
-  if (connection) {
-    connection->client()->OnViewInputEvent(
-        transport_view_id, event.Pass(), base::Bind(&base::DoNothing));
-  }
-}
-
-void ConnectionManager::SetViewportSize(mojo::SizePtr size) {
-  gfx::Size new_size = size.To<gfx::Size>();
-  display_manager_->SetViewportSize(new_size);
-}
-
-void ConnectionManager::CloneAndAnimate(mojo::Id transport_view_id) {
-  CloneAndAnimate(ViewIdFromTransportId(transport_view_id));
-}
-
-}  // namespace view_manager