mash: Remove StatusAreaWidget references from system tray classes

ash/system/web_notification/ash_popup_alignment_delegate.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 "ash/system/web_notification/ash_popup_alignment_delegate.h"
-
-#include "ash/common/shelf/shelf_constants.h"
-#include "ash/common/shelf/shelf_types.h"
-#include "ash/common/shelf/wm_shelf.h"
-#include "ash/common/shell_window_ids.h"
-#include "ash/common/wm_root_window_controller.h"
-#include "ash/common/wm_shell.h"
-#include "ash/common/wm_window.h"
-#include "base/i18n/rtl.h"
-#include "ui/display/display.h"
-#include "ui/display/screen.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/message_center/message_center_style.h"
-#include "ui/message_center/views/message_popup_collection.h"
-
-namespace ash {
-
-namespace {
-
-const int kToastMarginX = 3;
-
-// If there should be no margin for the first item, this value needs to be
-// substracted to flush the message to the shelf (the width of the border +
-// shadow).
-const int kNoToastMarginBorderAndShadowOffset = 2;
-
-}  // namespace
-
-AshPopupAlignmentDelegate::AshPopupAlignmentDelegate(WmShelf* shelf)
-    : screen_(NULL), shelf_(shelf), system_tray_height_(0) {
-  shelf_->AddObserver(this);
-}
-
-AshPopupAlignmentDelegate::~AshPopupAlignmentDelegate() {
-  if (screen_)
-    screen_->RemoveObserver(this);
-  WmShell::Get()->RemoveShellObserver(this);
-  shelf_->RemoveObserver(this);
-}
-
-void AshPopupAlignmentDelegate::StartObserving(
-    display::Screen* screen,
-    const display::Display& display) {
-  screen_ = screen;
-  work_area_ = display.work_area();
-  screen->AddObserver(this);
-  WmShell::Get()->AddShellObserver(this);
-  if (system_tray_height_ > 0)
-    UpdateWorkArea();
-}
-
-void AshPopupAlignmentDelegate::SetSystemTrayHeight(int height) {
-  system_tray_height_ = height;
-
-  // If the shelf is shown during auto-hide state, the distance from the edge
-  // should be reduced by the height of shelf's shown height.
-  if (shelf_->GetVisibilityState() == SHELF_AUTO_HIDE &&
-      shelf_->GetAutoHideState() == SHELF_AUTO_HIDE_SHOWN) {
-    system_tray_height_ -= GetShelfConstant(SHELF_SIZE) -
-                           GetShelfConstant(SHELF_INSETS_FOR_AUTO_HIDE);
-  }
-
-  if (system_tray_height_ > 0)
-    system_tray_height_ += message_center::kMarginBetweenItems;
-  else
-    system_tray_height_ = 0;
-
-  DoUpdateIfPossible();
-}
-
-int AshPopupAlignmentDelegate::GetToastOriginX(
-    const gfx::Rect& toast_bounds) const {
-  // In Ash, RTL UI language mirrors the whole ash layout, so the toast
-  // widgets should be at the bottom-left instead of bottom right.
-  if (base::i18n::IsRTL())
-    return work_area_.x() + kToastMarginX;
-
-  if (IsFromLeft())
-    return work_area_.x() + kToastMarginX;
-  return work_area_.right() - kToastMarginX - toast_bounds.width();
-}
-
-int AshPopupAlignmentDelegate::GetBaseLine() const {
-  return work_area_.bottom() - kNoToastMarginBorderAndShadowOffset -
-         system_tray_height_;
-}
-
-int AshPopupAlignmentDelegate::GetWorkAreaBottom() const {
-  return work_area_.bottom() - system_tray_height_;
-}
-
-bool AshPopupAlignmentDelegate::IsTopDown() const {
-  return false;
-}
-
-bool AshPopupAlignmentDelegate::IsFromLeft() const {
-  return GetAlignment() == SHELF_ALIGNMENT_LEFT;
-}
-
-void AshPopupAlignmentDelegate::RecomputeAlignment(
-    const display::Display& display) {
-  // Nothing needs to be done.
-}
-
-void AshPopupAlignmentDelegate::ConfigureWidgetInitParamsForContainer(
-    views::Widget* widget,
-    views::Widget::InitParams* init_params) {
-  // On ash, popups go in the status container.
-  shelf_->GetWindow()
-      ->GetRootWindowController()
-      ->ConfigureWidgetInitParamsForContainer(
-          widget, kShellWindowId_StatusContainer, init_params);
-}
-
-ShelfAlignment AshPopupAlignmentDelegate::GetAlignment() const {
-  return shelf_->GetAlignment();
-}
-
-display::Display AshPopupAlignmentDelegate::GetCurrentDisplay() const {
-  return shelf_->GetWindow()->GetDisplayNearestWindow();
-}
-
-void AshPopupAlignmentDelegate::UpdateWorkArea() {
-  work_area_ = shelf_->GetUserWorkAreaBounds();
-  DoUpdateIfPossible();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// ShellObserver:
-
-void AshPopupAlignmentDelegate::OnDisplayWorkAreaInsetsChanged() {
-  UpdateWorkArea();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// WmShelfObserver:
-
-void AshPopupAlignmentDelegate::WillChangeVisibilityState(
-    ShelfVisibilityState new_state) {
-  UpdateWorkArea();
-}
-
-void AshPopupAlignmentDelegate::OnAutoHideStateChanged(
-    ShelfAutoHideState new_state) {
-  UpdateWorkArea();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// display::DisplayObserver:
-
-void AshPopupAlignmentDelegate::OnDisplayAdded(
-    const display::Display& new_display) {}
-
-void AshPopupAlignmentDelegate::OnDisplayRemoved(
-    const display::Display& old_display) {}
-
-void AshPopupAlignmentDelegate::OnDisplayMetricsChanged(
-    const display::Display& display,
-    uint32_t metrics) {
-  if (GetCurrentDisplay().id() == display.id())
-    UpdateWorkArea();
-}
-
-}  // namespace ash