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

ui/aura_shell/shadow_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/shadow_controller.h"
-
-#include <utility>
-
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "ui/aura/root_window.h"
-#include "ui/aura/window.h"
-#include "ui/aura_shell/aura_shell_switches.h"
-#include "ui/aura_shell/shadow.h"
-#include "ui/aura_shell/shadow_types.h"
-#include "ui/aura_shell/window_properties.h"
-
-using std::make_pair;
-
-namespace aura_shell {
-namespace internal {
-
-namespace {
-
-ShadowType GetShadowTypeFromWindowType(aura::Window* window) {
-  switch (window->type()) {
-    case aura::client::WINDOW_TYPE_NORMAL:
-      return CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kAuraTranslucentFrames) ?
-              SHADOW_TYPE_NONE : SHADOW_TYPE_RECTANGULAR;
-    case aura::client::WINDOW_TYPE_MENU:
-    case aura::client::WINDOW_TYPE_TOOLTIP:
-      return SHADOW_TYPE_RECTANGULAR;
-    default:
-      break;
-  }
-  return SHADOW_TYPE_NONE;
-}
-
-}  // namespace
-
-ShadowController::ShadowController() {
-  aura::RootWindow::GetInstance()->AddRootWindowObserver(this);
-}
-
-ShadowController::~ShadowController() {
-  for (WindowShadowMap::const_iterator it = window_shadows_.begin();
-       it != window_shadows_.end(); ++it) {
-    it->first->RemoveObserver(this);
-  }
-  aura::RootWindow::GetInstance()->RemoveRootWindowObserver(this);
-}
-
-void ShadowController::OnWindowInitialized(aura::Window* window) {
-  window->AddObserver(this);
-  SetShadowType(window, GetShadowTypeFromWindowType(window));
-  HandlePossibleShadowVisibilityChange(window);
-}
-
-void ShadowController::OnWindowPropertyChanged(aura::Window* window,
-                                               const char* name,
-                                               void* old) {
-  if (name == kShadowTypeKey)
-    HandlePossibleShadowVisibilityChange(window);
-}
-
-void ShadowController::OnWindowBoundsChanged(aura::Window* window,
-                                             const gfx::Rect& bounds) {
-  Shadow* shadow = GetShadowForWindow(window);
-  if (shadow)
-    shadow->SetContentBounds(gfx::Rect(bounds.size()));
-}
-
-void ShadowController::OnWindowDestroyed(aura::Window* window) {
-  window_shadows_.erase(window);
-}
-
-bool ShadowController::ShouldShowShadowForWindow(aura::Window* window) const {
-  const ShadowType type = GetShadowType(window);
-  switch (type) {
-    case SHADOW_TYPE_NONE:
-      return false;
-    case SHADOW_TYPE_RECTANGULAR:
-      return true;
-    default:
-      NOTREACHED() << "Unknown shadow type " << type;
-      return false;
-  }
-}
-
-Shadow* ShadowController::GetShadowForWindow(aura::Window* window) {
-  WindowShadowMap::const_iterator it = window_shadows_.find(window);
-  return it != window_shadows_.end() ? it->second.get() : NULL;
-}
-
-void ShadowController::HandlePossibleShadowVisibilityChange(
-    aura::Window* window) {
-  const bool should_show = ShouldShowShadowForWindow(window);
-  Shadow* shadow = GetShadowForWindow(window);
-  if (shadow)
-    shadow->layer()->SetVisible(should_show);
-  else if (should_show && !shadow)
-    CreateShadowForWindow(window);
-}
-
-void ShadowController::CreateShadowForWindow(aura::Window* window) {
-  linked_ptr<Shadow> shadow(new Shadow());
-  window_shadows_.insert(make_pair(window, shadow));
-
-  shadow->Init();
-  shadow->SetContentBounds(gfx::Rect(window->bounds().size()));
-  shadow->layer()->SetVisible(ShouldShowShadowForWindow(window));
-  window->layer()->Add(shadow->layer());
-}
-
-}  // namespace internal
-}  // namespace aura_shell