Revert of AppListController refactoring part 2: Ash's AppListShowerDelegate imlementation.

ash/app_list/app_list_shower_delegate.cc

Index: ash/app_list/app_list_shower_delegate.cc
diff --git a/ash/app_list/app_list_shower_delegate.cc b/ash/app_list/app_list_shower_delegate.cc
deleted file mode 100644
index f79d9f91d485f3267049ba430bd82c5e6940e62c..0000000000000000000000000000000000000000
--- a/ash/app_list/app_list_shower_delegate.cc
+++ /dev/null
@@ -1,357 +0,0 @@
-// Copyright (c) 2012 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 "ash/app_list/app_list_shower_delegate.h"
-
-#include "ash/app_list/app_list_view_delegate_factory.h"
-#include "ash/ash_switches.h"
-#include "ash/root_window_controller.h"
-#include "ash/screen_util.h"
-#include "ash/shelf/shelf.h"
-#include "ash/shelf/shelf_layout_manager.h"
-#include "ash/shell.h"
-#include "ash/shell_delegate.h"
-#include "ash/shell_window_ids.h"
-#include "ash/wm/maximize_mode/maximize_mode_controller.h"
-#include "base/command_line.h"
-#include "ui/app_list/app_list_constants.h"
-#include "ui/app_list/app_list_switches.h"
-#include "ui/app_list/shower/app_list_shower.h"
-#include "ui/app_list/views/app_list_view.h"
-#include "ui/aura/window.h"
-#include "ui/events/event.h"
-#include "ui/keyboard/keyboard_controller.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-namespace {
-
-// Offset in pixels to animation away/towards the shelf.
-const int kAnimationOffset = 8;
-
-// The minimal anchor position offset to make sure that the bubble is still on
-// the screen with 8 pixels spacing on the left / right. This constant is a
-// result of minimal bubble arrow sizes and offsets.
-const int kMinimalAnchorPositionOffset = 57;
-
-// The minimal margin (in pixels) around the app list when in centered mode.
-const int kMinimalCenteredAppListMargin = 10;
-
-// Gets arrow location based on shelf alignment.
-views::BubbleBorder::Arrow GetBubbleArrow(aura::Window* window) {
-  DCHECK(Shell::HasInstance());
-  return Shelf::ForWindow(window)->SelectValueForShelfAlignment(
-      views::BubbleBorder::BOTTOM_CENTER, views::BubbleBorder::LEFT_CENTER,
-      views::BubbleBorder::RIGHT_CENTER);
-}
-
-// Using |button_bounds|, determine the anchor offset so that the bubble gets
-// shown above the shelf (used for the alternate shelf theme).
-gfx::Vector2d GetAnchorPositionOffsetToShelf(
-    const gfx::Rect& button_bounds, views::Widget* widget) {
-  DCHECK(Shell::HasInstance());
-  ShelfAlignment shelf_alignment = Shell::GetInstance()->GetShelfAlignment(
-      widget->GetNativeView()->GetRootWindow());
-  gfx::Point anchor(button_bounds.CenterPoint());
-  switch (shelf_alignment) {
-    case SHELF_ALIGNMENT_BOTTOM:
-      if (base::i18n::IsRTL()) {
-        int screen_width = widget->GetWorkAreaBoundsInScreen().width();
-        return gfx::Vector2d(
-            std::min(screen_width - kMinimalAnchorPositionOffset - anchor.x(),
-                     0), 0);
-      }
-      return gfx::Vector2d(
-          std::max(kMinimalAnchorPositionOffset - anchor.x(), 0), 0);
-    case SHELF_ALIGNMENT_LEFT:
-      return gfx::Vector2d(
-          0, std::max(kMinimalAnchorPositionOffset - anchor.y(), 0));
-    case SHELF_ALIGNMENT_RIGHT:
-      return gfx::Vector2d(
-          0, std::max(kMinimalAnchorPositionOffset - anchor.y(), 0));
-  }
-  NOTREACHED();
-  return gfx::Vector2d();
-}
-
-// Gets the point at the center of the display that a particular view is on.
-// This calculation excludes the virtual keyboard area. If the height of the
-// display area is less than |minimum_height|, its bottom will be extended to
-// that height (so that the app list never starts above the top of the screen).
-gfx::Point GetCenterOfDisplayForView(const views::View* view,
-                                     int minimum_height) {
-  aura::Window* window = view->GetWidget()->GetNativeView();
-  gfx::Rect bounds = ScreenUtil::GetShelfDisplayBoundsInRoot(window);
-  bounds = ScreenUtil::ConvertRectToScreen(window->GetRootWindow(), bounds);
-
-  // If the virtual keyboard is active, subtract it from the display bounds, so
-  // that the app list is centered in the non-keyboard area of the display.
-  // (Note that work_area excludes the keyboard, but it doesn't get updated
-  // until after this function is called.)
-  keyboard::KeyboardController* keyboard_controller =
-      keyboard::KeyboardController::GetInstance();
-  if (keyboard_controller && keyboard_controller->keyboard_visible())
-    bounds.Subtract(keyboard_controller->current_keyboard_bounds());
-
-  // Apply the |minimum_height|.
-  if (bounds.height() < minimum_height)
-    bounds.set_height(minimum_height);
-
-  return bounds.CenterPoint();
-}
-
-// Gets the minimum height of the rectangle to center the app list in.
-int GetMinimumBoundsHeightForAppList(const app_list::AppListView* app_list) {
-  return app_list->bounds().height() + 2 * kMinimalCenteredAppListMargin;
-}
-
-bool IsFullscreenAppListEnabled() {
-#if defined(OS_CHROMEOS)
-  return base::CommandLine::ForCurrentProcess()->HasSwitch(
-             switches::kAshEnableFullscreenAppList) &&
-         app_list::switches::IsExperimentalAppListEnabled();
-#else
-  return false;
-#endif
-}
-
-}  // namespace
-
-////////////////////////////////////////////////////////////////////////////////
-// AppListShowerDelegate, public:
-
-AppListShowerDelegate::AppListShowerDelegate(
-    app_list::AppListShower* shower,
-    AppListViewDelegateFactory* view_delegate_factory)
-    : shower_(shower), view_delegate_factory_(view_delegate_factory) {
-  Shell::GetInstance()->AddShellObserver(this);
-}
-
-AppListShowerDelegate::~AppListShowerDelegate() {
-  DCHECK(view_);
-  keyboard::KeyboardController* keyboard_controller =
-      keyboard::KeyboardController::GetInstance();
-  if (keyboard_controller)
-    keyboard_controller->RemoveObserver(this);
-  views::Widget* widget = view_->GetWidget();
-  Shell::GetInstance()->RemovePreTargetHandler(this);
-  Shelf::ForWindow(widget->GetNativeWindow())->RemoveIconObserver(this);
-  Shell::GetInstance()->RemoveShellObserver(this);
-}
-
-app_list::AppListViewDelegate* AppListShowerDelegate::GetViewDelegate() {
-  return view_delegate_factory_->GetDelegate();
-}
-
-void AppListShowerDelegate::Init(app_list::AppListView* view,
-                                 aura::Window* root_window,
-                                 int current_apps_page) {
-  // App list needs to know the new shelf layout in order to calculate its
-  // UI layout when AppListView visibility changes.
-  ash::Shell::GetPrimaryRootWindowController()
-      ->GetShelfLayoutManager()
-      ->UpdateAutoHideState();
-  view_ = view;
-  aura::Window* container = GetRootWindowController(root_window)
-                                ->GetContainer(kShellWindowId_AppListContainer);
-  views::View* applist_button =
-      Shelf::ForWindow(container)->GetAppListButtonView();
-  is_centered_ = view->ShouldCenterWindow();
-  bool is_fullscreen = IsFullscreenAppListEnabled() &&
-                       Shell::GetInstance()
-                           ->maximize_mode_controller()
-                           ->IsMaximizeModeWindowManagerEnabled();
-  if (is_fullscreen) {
-    view->InitAsFramelessWindow(
-        container, current_apps_page,
-        ScreenUtil::GetDisplayWorkAreaBoundsInParent(container));
-  } else if (is_centered_) {
-    // Note: We can't center the app list until we have its dimensions, so we
-    // init at (0, 0) and then reset its anchor point.
-    view->InitAsBubbleAtFixedLocation(container,
-                                      current_apps_page,
-                                      gfx::Point(),
-                                      views::BubbleBorder::FLOAT,
-                                      true /* border_accepts_events */);
-    // The experimental app list is centered over the display of the app list
-    // button that was pressed (if triggered via keyboard, this is the display
-    // with the currently focused window).
-    view->SetAnchorPoint(GetCenterOfDisplayForView(
-        applist_button, GetMinimumBoundsHeightForAppList(view)));
-  } else {
-    gfx::Rect applist_button_bounds = applist_button->GetBoundsInScreen();
-    // We need the location of the button within the local screen.
-    applist_button_bounds = ScreenUtil::ConvertRectFromScreen(
-        root_window,
-        applist_button_bounds);
-    view->InitAsBubbleAttachedToAnchor(
-        container,
-        current_apps_page,
-        Shelf::ForWindow(container)->GetAppListButtonView(),
-        GetAnchorPositionOffsetToShelf(
-            applist_button_bounds,
-            Shelf::ForWindow(container)->GetAppListButtonView()->GetWidget()),
-        GetBubbleArrow(container),
-        true /* border_accepts_events */);
-    view->SetArrowPaintType(views::BubbleBorder::PAINT_NONE);
-  }
-
-  keyboard::KeyboardController* keyboard_controller =
-      keyboard::KeyboardController::GetInstance();
-  if (keyboard_controller)
-    keyboard_controller->AddObserver(this);
-  Shell::GetInstance()->AddPreTargetHandler(this);
-  views::Widget* widget = view->GetWidget();
-  Shelf::ForWindow(widget->GetNativeWindow())->AddIconObserver(this);
-
-  // By setting us as DnD recipient, the app list knows that we can
-  // handle items.
-  view->SetDragAndDropHostOfCurrentAppList(
-      Shelf::ForWindow(root_window)->GetDragAndDropHostForAppList());
-}
-
-void AppListShowerDelegate::OnShown(aura::Window* root_window) {
-  is_visible_ = true;
-  // Update applist button status when app list visibility is changed.
-  Shelf::ForWindow(root_window)->GetAppListButtonView()->SchedulePaint();
-}
-
-void AppListShowerDelegate::OnDismissed() {
-  DCHECK(is_visible_);
-  DCHECK(view_);
-
-  is_visible_ = false;
-
-  // App list needs to know the new shelf layout in order to calculate its
-  // UI layout when AppListView visibility changes.
-  Shell::GetPrimaryRootWindowController()
-      ->GetShelfLayoutManager()
-      ->UpdateAutoHideState();
-
-  // Update applist button status when app list visibility is changed.
-  Shelf::ForWindow(view_->GetWidget()->GetNativeView())
-      ->GetAppListButtonView()
-      ->SchedulePaint();
-}
-
-void AppListShowerDelegate::UpdateBounds() {
-  if (!view_ || !is_visible_)
-    return;
-
-  view_->UpdateBounds();
-
-  if (is_centered_) {
-    view_->SetAnchorPoint(GetCenterOfDisplayForView(
-        view_, GetMinimumBoundsHeightForAppList(view_)));
-  }
-}
-
-gfx::Vector2d AppListShowerDelegate::GetVisibilityAnimationOffset(
-    aura::Window* root_window) {
-  DCHECK(Shell::HasInstance());
-
-  // App list needs to know the new shelf layout in order to calculate its
-  // UI layout when AppListView visibility changes.
-  Shell::GetPrimaryRootWindowController()
-      ->GetShelfLayoutManager()
-      ->UpdateAutoHideState();
-
-  ShelfAlignment shelf_alignment =
-      Shell::GetInstance()->GetShelfAlignment(root_window);
-  switch (shelf_alignment) {
-    case SHELF_ALIGNMENT_BOTTOM:
-      return gfx::Vector2d(0, kAnimationOffset);
-    case SHELF_ALIGNMENT_LEFT:
-      return gfx::Vector2d(-kAnimationOffset, 0);
-    case SHELF_ALIGNMENT_RIGHT:
-      return gfx::Vector2d(kAnimationOffset, 0);
-  }
-  NOTREACHED();
-  return gfx::Vector2d();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// AppListShowerDelegate, private:
-
-void AppListShowerDelegate::ProcessLocatedEvent(ui::LocatedEvent* event) {
-  if (!view_ || !is_visible_)
-    return;
-
-  // If the event happened on a menu, then the event should not close the app
-  // list.
-  aura::Window* target = static_cast<aura::Window*>(event->target());
-  if (target) {
-    RootWindowController* root_controller =
-        GetRootWindowController(target->GetRootWindow());
-    if (root_controller) {
-      aura::Window* menu_container =
-          root_controller->GetContainer(kShellWindowId_MenuContainer);
-      if (menu_container->Contains(target))
-        return;
-      aura::Window* keyboard_container = root_controller->GetContainer(
-          kShellWindowId_VirtualKeyboardContainer);
-      if (keyboard_container->Contains(target))
-        return;
-    }
-  }
-
-  aura::Window* window = view_->GetWidget()->GetNativeView()->parent();
-  if (!window->Contains(target) &&
-      !app_list::switches::ShouldNotDismissOnBlur()) {
-    shower_->Dismiss();
-  }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// AppListShowerDelegate, aura::EventFilter implementation:
-
-void AppListShowerDelegate::OnMouseEvent(ui::MouseEvent* event) {
-  if (event->type() == ui::ET_MOUSE_PRESSED)
-    ProcessLocatedEvent(event);
-}
-
-void AppListShowerDelegate::OnGestureEvent(ui::GestureEvent* event) {
-  if (event->type() == ui::ET_GESTURE_TAP_DOWN)
-    ProcessLocatedEvent(event);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// AppListShowerDelegate, keyboard::KeyboardControllerObserver implementation:
-
-void AppListShowerDelegate::OnKeyboardBoundsChanging(
-    const gfx::Rect& new_bounds) {
-  UpdateBounds();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// AppListShowerDelegate, ShellObserver implementation:
-void AppListShowerDelegate::OnShelfAlignmentChanged(aura::Window* root_window) {
-  if (view_)
-    view_->SetBubbleArrow(GetBubbleArrow(view_->GetWidget()->GetNativeView()));
-}
-
-void AppListShowerDelegate::OnMaximizeModeStarted() {
-  // The "fullscreen" app-list is initialized as in a different type of window,
-  // therefore we can't switch between the fullscreen status and the normal
-  // app-list bubble. App-list should be dismissed for the transition between
-  // maximize mode (touch-view mode) and non-maximize mode, otherwise the app
-  // list tries to behave as a bubble which leads to a crash. crbug.com/510062
-  if (IsFullscreenAppListEnabled() && is_visible_)
-    shower_->Dismiss();
-}
-
-void AppListShowerDelegate::OnMaximizeModeEnded() {
-  // See the comments of OnMaximizeModeStarted().
-  if (IsFullscreenAppListEnabled() && is_visible_)
-    shower_->Dismiss();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// AppListShowerDelegate, ShelfIconObserver implementation:
-
-void AppListShowerDelegate::OnShelfIconPositionsChanged() {
-  UpdateBounds();
-}
-
-}  // namespace ash