Move some more files into ash... this time seed the window manager dir.

ui/aura_shell/always_on_top_controller.cc

-// Copyright (c) 2011 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 "ui/aura_shell/always_on_top_controller.h"
-
-#include "ui/aura/client/aura_constants.h"
-#include "ui/aura/window.h"
-
-namespace aura_shell {
-namespace internal {
-
-AlwaysOnTopController::AlwaysOnTopController()
-    : default_container_(NULL),
-      always_on_top_container_(NULL) {
-}
-
-AlwaysOnTopController::~AlwaysOnTopController() {
-  if (default_container_)
-    default_container_->RemoveObserver(this);
-  if (always_on_top_container_)
-    always_on_top_container_->RemoveObserver(this);
-}
-
-void AlwaysOnTopController::SetContainers(aura::Window* default_container,
-    aura::Window* always_on_top_container) {
-  // Both containers should have no children.
-  DCHECK(default_container->children().empty());
-  DCHECK(always_on_top_container->children().empty());
-
-  // We are not handling any containers yet.
-  DCHECK(default_container_ == NULL && always_on_top_container_ == NULL);
-
-  default_container_ = default_container;
-  default_container_->AddObserver(this);
-
-  always_on_top_container_ = always_on_top_container;
-  always_on_top_container_->AddObserver(this);
-}
-
-aura::Window* AlwaysOnTopController::GetContainer(aura::Window* window) const {
-  DCHECK(default_container_ && always_on_top_container_);
-  return !window->GetProperty(aura::client::kAlwaysOnTopKey) ?
-      default_container_ : always_on_top_container_;
-}
-
-void AlwaysOnTopController::OnWindowAdded(aura::Window* child) {
-  // Observe direct child of the containers.
-  if (child->parent() == default_container_ ||
-      child->parent() == always_on_top_container_) {
-    child->AddObserver(this);
-  }
-}
-
-void AlwaysOnTopController::OnWillRemoveWindow(aura::Window* child) {
-  child->RemoveObserver(this);
-}
-
-void AlwaysOnTopController::OnWindowPropertyChanged(aura::Window* window,
-                                                    const char* name,
-                                                    void* old) {
-  if (name == aura::client::kAlwaysOnTopKey) {
-    DCHECK(window->type() == aura::client::WINDOW_TYPE_NORMAL ||
-           window->type() == aura::client::WINDOW_TYPE_POPUP);
-    aura::Window* container = GetContainer(window);
-    if (window->parent() != container)
-      container->AddChild(window);
-  }
-}
-
-void AlwaysOnTopController::OnWindowDestroyed(aura::Window* window) {
-  if (window == default_container_)
-    default_container_ = NULL;
-  if (window == always_on_top_container_)
-    always_on_top_container_ = NULL;
-}
-
-}  // namespace internal
-}  // namespace aura_shell