Revert of Support modal windows

athena/screen/modal_window_controller.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 "athena/screen/modal_window_controller.h"
-
-#include "athena/screen/public/screen_manager.h"
-#include "base/message_loop/message_loop.h"
-#include "ui/aura/window.h"
-#include "ui/aura/window_property.h"
-#include "ui/compositor/layer.h"
-#include "ui/compositor/layer_animation_observer.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-#include "ui/wm/core/window_animations.h"
-
-namespace athena {
-namespace {
-
-DEFINE_OWNED_WINDOW_PROPERTY_KEY(ModalWindowController,
-                                 kModalWindowControllerKey,
-                                 NULL);
-
-}  // namespace
-
-// static
-ModalWindowController* ModalWindowController::Get(aura::Window* container) {
-  ModalWindowController* controller =
-      container->GetProperty(kModalWindowControllerKey);
-  CHECK(controller);
-  return controller;
-}
-
-ModalWindowController::ModalWindowController(int priority)
-    : modal_container_(new aura::Window(NULL)),
-      dimmer_window_(new aura::Window(NULL)),
-      dimmed_(false) {
-  ScreenManager::ContainerParams params("ModalContainer", priority);
-  params.can_activate_children = true;
-  params.block_events = true;
-  modal_container_ = ScreenManager::Get()->CreateContainer(params);
-  modal_container_->SetProperty(kModalWindowControllerKey, this);
-
-  dimmer_window_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
-  dimmer_window_->Init(aura::WINDOW_LAYER_SOLID_COLOR);
-  dimmer_window_->layer()->SetColor(SK_ColorBLACK);
-  dimmer_window_->layer()->SetOpacity(0.0f);
-  dimmer_window_->Show();
-
-  modal_container_->AddChild(dimmer_window_);
-  modal_container_->AddObserver(this);
-
-  UpdateDimmerWindowBounds();
-}
-
-ModalWindowController::~ModalWindowController() {
-  if (modal_container_)
-    modal_container_->RemoveObserver(this);
-}
-
-void ModalWindowController::OnWindowAdded(aura::Window* child) {
-  DCHECK_NE(child, dimmer_window_);
-  if (IsChildWindow(child)) {
-    child->AddObserver(this);
-    UpdateDimming(NULL);
-  }
-}
-
-void ModalWindowController::OnWindowVisibilityChanged(aura::Window* window,
-                                                      bool visible) {
-  if (IsChildWindow(window))
-    UpdateDimming(NULL);
-}
-
-void ModalWindowController::OnWindowBoundsChanged(aura::Window* window,
-                                                  const gfx::Rect& old_bounds,
-                                                  const gfx::Rect& new_bounds) {
-  if (window == modal_container_)
-    UpdateDimmerWindowBounds();
-}
-
-void ModalWindowController::OnWindowDestroyed(aura::Window* window) {
-  UpdateDimming(window);
-}
-
-bool ModalWindowController::IsChildWindow(aura::Window* child) const {
-  return child->parent() == modal_container_ && child != dimmer_window_;
-}
-
-void ModalWindowController::UpdateDimmerWindowBounds() {
-  gfx::Rect bounds(modal_container_->bounds().size());
-  dimmer_window_->SetBounds(bounds);
-}
-
-void ModalWindowController::UpdateDimming(aura::Window* ignore) {
-  if (!modal_container_ || !dimmer_window_)
-    return;
-  bool should_delete = true;
-  for (aura::Window* window : modal_container_->children()) {
-    if (window == dimmer_window_ || window == ignore)
-      continue;
-    should_delete = false;
-    if (window->TargetVisibility()) {
-      SetDimmed(true);
-      return;
-    }
-  }
-  SetDimmed(false);
-
-  if (should_delete) {
-    // Remove the container from root so that the container becomes
-    // invisible, but don't delete it until next event execution
-    // because the call stack may still have and use the pointer.
-    modal_container_->RemoveObserver(this);
-    modal_container_->parent()->RemoveChild(modal_container_);
-    base::MessageLoopForUI::current()->DeleteSoon(FROM_HERE, modal_container_);
-    modal_container_ = NULL;
-    dimmer_window_ = NULL;
-  }
-}
-
-void ModalWindowController::SetDimmed(bool dimmed) {
-  const float kDimmedOpacity = 0.4f;
-
-  if (!dimmer_window_ || dimmed_ == dimmed)
-    return;
-  dimmed_ = dimmed;
-
-  const int kDimmAnimationDurationMs = 500;
-  if (dimmed) {
-    ui::ScopedLayerAnimationSettings settings(
-        dimmer_window_->layer()->GetAnimator());
-    settings.SetTransitionDuration(
-        base::TimeDelta::FromMilliseconds(kDimmAnimationDurationMs));
-    dimmer_window_->layer()->SetOpacity(kDimmedOpacity);
-  } else {
-    // ScopedHidingAnimationSettings will detach the animating and
-    // recreate layers for the container so that animation can continue
-    // even if the container is removed immediately.
-    wm::ScopedHidingAnimationSettings settings(modal_container_);
-    settings.layer_animation_settings()->SetTransitionDuration(
-        base::TimeDelta::FromMilliseconds(kDimmAnimationDurationMs));
-    modal_container_->layer()->SetOpacity(0.0f);
-  }
-}
-
-}  // namespace athena