Delete the ViewManager and WindowManager services.

services/window_manager/basic_focus_rules.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/window_manager/basic_focus_rules.h"
-
-#include "base/macros.h"
-#include "mojo/services/view_manager/cpp/view.h"
-
-using mojo::View;
-
-namespace window_manager {
-
-BasicFocusRules::BasicFocusRules(View* window_container)
-    : window_container_(window_container) {
-}
-
-BasicFocusRules::~BasicFocusRules() {}
-
-bool BasicFocusRules::SupportsChildActivation(View* view) const {
-  return true;
-}
-
-bool BasicFocusRules::IsToplevelView(View* view) const {
-  if (!IsViewParentedToWindowContainer(view))
-    return false;
-
-  // The window must exist within a container that supports activation.
-  // The window cannot be blocked by a modal transient.
-  return SupportsChildActivation(view->parent());
-}
-
-bool BasicFocusRules::CanActivateView(View* view) const {
-  if (!view)
-    return true;
-
-  // Only toplevel windows can be activated
-  if (!IsToplevelView(view))
-    return false;
-
-  // The view must be visible.
-  if (!view->visible())
-    return false;
-
-  // TODO(erg): The aura version of this class asks the aura::Window's
-  // ActivationDelegate whether the window is activatable.
-
-  // A window must be focusable to be activatable. We don't call
-  // CanFocusWindow() from here because it will call back to us via
-  // GetActivatableWindow().
-  if (!CanFocusViewImpl(view))
-    return false;
-
-  // TODO(erg): In the aura version, we also check whether the window is
-  // blocked by a modal transient window.
-
-  return true;
-}
-
-bool BasicFocusRules::CanFocusView(View* view) const {
-  // It is possible to focus a NULL window, it is equivalent to clearing focus.
-  if (!view)
-    return true;
-
-  // The focused view is always inside the active view, so views that aren't
-  // activatable can't contain the focused view.
-  View* activatable = GetActivatableView(view);
-  if (!activatable || !activatable->Contains(view))
-    return false;
-  return CanFocusViewImpl(view);
-}
-
-View* BasicFocusRules::GetToplevelView(View* view) const {
-  View* parent = view->parent();
-  View* child = view;
-  while (parent) {
-    if (IsToplevelView(child))
-      return child;
-
-    parent = parent->parent();
-    child = child->parent();
-  }
-
-  return nullptr;
-}
-
-View* BasicFocusRules::GetActivatableView(View* view) const {
-  View* parent = view->parent();
-  View* child = view;
-  while (parent) {
-    if (CanActivateView(child))
-      return child;
-
-    // TODO(erg): In the aura version of this class, we have a whole bunch of
-    // checks to support modal transient windows, and transient parents.
-
-    parent = parent->parent();
-    child = child->parent();
-  }
-
-  return nullptr;
-}
-
-View* BasicFocusRules::GetFocusableView(View* view) const {
-  if (CanFocusView(view))
-    return view;
-
-  // |view| may be in a hierarchy that is non-activatable, in which case we
-  // need to cut over to the activatable hierarchy.
-  View* activatable = GetActivatableView(view);
-  if (!activatable) {
-    // There may not be a related activatable hierarchy to cut over to, in which
-    // case we try an unrelated one.
-    View* toplevel = GetToplevelView(view);
-    if (toplevel)
-      activatable = GetNextActivatableView(toplevel);
-    if (!activatable)
-      return nullptr;
-  }
-
-  if (!activatable->Contains(view)) {
-    // If there's already a child window focused in the activatable hierarchy,
-    // just use that (i.e. don't shift focus), otherwise we need to at least cut
-    // over to the activatable hierarchy.
-    View* focused = GetFocusableView(activatable);
-    return activatable->Contains(focused) ? focused : activatable;
-  }
-
-  while (view && !CanFocusView(view))
-    view = view->parent();
-  return view;
-}
-
-View* BasicFocusRules::GetNextActivatableView(View* activatable) const {
-  DCHECK(activatable);
-
-  // In the basic scenarios handled by BasicFocusRules, the pool of activatable
-  // windows is limited to the |ignore|'s siblings.
-  const View::Children& siblings = activatable->parent()->children();
-  DCHECK(!siblings.empty());
-
-  for (auto rit = siblings.rbegin(); rit != siblings.rend(); ++rit) {
-    View* cur = *rit;
-    if (cur == activatable)
-      continue;
-    if (CanActivateView(cur))
-      return cur;
-  }
-  return nullptr;
-}
-
-// TODO(erg): aura::Window::CanFocus() exists. View::CanFocus() does
-// not. This is a hack that does everything that Window::CanFocus() currently
-// does that doesn't require a delegate or an EventClient.
-bool BasicFocusRules::CanFocusViewImpl(View* view) const {
-  // TODO(erg): In unit tests, views will never be drawn, so we can't rely on
-  // IsDrawn() here.
-  if (IsViewParentedToWindowContainer(view))
-    return view->visible();
-
-  // TODO(erg): Add the intermediary delegate and event client checks once we
-  // have those.
-
-  return CanFocusViewImpl(view->parent());
-}
-
-bool BasicFocusRules::IsViewParentedToWindowContainer(View* view) const {
-  return view->parent() == window_container_;
-}
-
-}  // namespace mojo