[Eraser] First pass at removing the notification center panel.

chrome/browser/ui/views/message_center/message_center_widget_delegate.cc

-// Copyright 2013 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 "chrome/browser/ui/views/message_center/message_center_widget_delegate.h"
-
-#include <complex>
-
-#include "chrome/browser/ui/views/message_center/message_center_frame_view.h"
-#include "chrome/browser/ui/views/message_center/web_notification_tray.h"
-#include "content/public/browser/user_metrics.h"
-#include "ui/accessibility/ax_view_state.h"
-#include "ui/gfx/screen.h"
-#include "ui/message_center/message_center_style.h"
-#include "ui/message_center/views/message_center_view.h"
-#include "ui/native_theme/native_theme.h"
-#include "ui/views/border.h"
-#include "ui/views/layout/box_layout.h"
-#include "ui/views/widget/widget.h"
-
-#if defined(OS_WIN)
-#include "ui/views/win/hwnd_util.h"
-#endif
-
-#if defined(USE_ASH)
-#include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
-#endif
-
-namespace message_center {
-
-MessageCenterWidgetDelegate::MessageCenterWidgetDelegate(
-    WebNotificationTray* tray,
-    MessageCenterTray* mc_tray,
-    bool initially_settings_visible,
-    const PositionInfo& pos_info,
-    const base::string16& title)
-    : MessageCenterView(tray->message_center(),
-                        mc_tray,
-                        pos_info.max_height,
-                        initially_settings_visible,
-                        pos_info.message_center_alignment &
-                            ALIGNMENT_TOP,  // Show buttons on top if message
-                                            // center is top aligned
-                        title),
-      pos_info_(pos_info),
-      tray_(tray) {
-  // A WidgetDelegate should be deleted on DeleteDelegate.
-  set_owned_by_client();
-
-  views::BoxLayout* layout =
-      new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0);
-  layout->SetDefaultFlex(1);
-  SetLayoutManager(layout);
-
-  AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
-
-  SetPaintToLayer(true);
-  SetFillsBoundsOpaquely(true);
-
-  InitWidget();
-}
-
-MessageCenterWidgetDelegate::~MessageCenterWidgetDelegate() {
-  views::Widget* widget = GetWidget();
-  if (widget) {
-    widget->RemoveObserver(this);
-  }
-}
-
-views::View* MessageCenterWidgetDelegate::GetContentsView() {
-  return this;
-}
-
-views::NonClientFrameView*
-MessageCenterWidgetDelegate::CreateNonClientFrameView(views::Widget* widget) {
-  MessageCenterFrameView* frame_view = new MessageCenterFrameView();
-  border_insets_ = frame_view->GetInsets();
-  return frame_view;
-}
-
-void MessageCenterWidgetDelegate::DeleteDelegate() {
-  delete this;
-}
-
-views::Widget* MessageCenterWidgetDelegate::GetWidget() {
-  return View::GetWidget();
-}
-
-const views::Widget* MessageCenterWidgetDelegate::GetWidget() const {
-  return View::GetWidget();
-}
-
-void MessageCenterWidgetDelegate::OnWidgetActivationChanged(
-    views::Widget* widget,
-    bool active) {
-  // Some Linux users set 'focus-follows-mouse' where the activation is lost
-  // immediately after the mouse exists from the bubble, which is a really bad
-  // experience. Disable hiding until the bug around the focus is fixed.
-  // TODO(erg, pkotwicz): fix the activation issue and then remove this ifdef.
-#if !defined(OS_LINUX)
-  if (!active) {
-    tray_->SendHideMessageCenter();
-  }
-#endif
-}
-
-void MessageCenterWidgetDelegate::OnWidgetClosing(views::Widget* widget) {
-  SetIsClosing(true);
-  tray_->MarkMessageCenterHidden();
-}
-
-void MessageCenterWidgetDelegate::PreferredSizeChanged() {
-  GetWidget()->SetBounds(GetMessageCenterBounds());
-  views::View::PreferredSizeChanged();
-}
-
-gfx::Size MessageCenterWidgetDelegate::GetPreferredSize() const {
-  int preferred_width = kNotificationWidth + 2 * kMarginBetweenItems;
-  return gfx::Size(preferred_width, GetHeightForWidth(preferred_width));
-}
-
-gfx::Size MessageCenterWidgetDelegate::GetMaximumSize() const {
-  gfx::Size size = GetPreferredSize();
-  return size;
-}
-
-int MessageCenterWidgetDelegate::GetHeightForWidth(int width) const {
-  int height = MessageCenterView::GetHeightForWidth(width);
-  return (pos_info_.max_height != 0) ?
-    std::min(height, pos_info_.max_height - border_insets_.height()) : height;
-}
-
-bool MessageCenterWidgetDelegate::AcceleratorPressed(
-    const ui::Accelerator& accelerator) {
-  if (accelerator.key_code() != ui::VKEY_ESCAPE)
-    return false;
-  tray_->SendHideMessageCenter();
-  return true;
-}
-
-void MessageCenterWidgetDelegate::InitWidget() {
-  views::Widget* widget = new views::Widget();
-  views::Widget::InitParams params(views::Widget::InitParams::TYPE_BUBBLE);
-  params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
-  params.delegate = this;
-  params.keep_on_top = true;
-#if defined(USE_ASH)
-  // This class is not used in Ash; there is another container for the message
-  // center that's used there.  So, we must be in a Views + Ash environment.  We
-  // want the notification center to be available on both desktops.  Setting the
-  // |native_widget| variable here ensures that the widget is hosted on the
-  // native desktop.
-  params.native_widget = new views::DesktopNativeWidgetAura(widget);
-#endif
-  widget->Init(params);
-
-  widget->AddObserver(this);
-  widget->StackAtTop();
-  widget->SetAlwaysOnTop(true);
-
-  const NotificationList::Notifications& notifications =
-      tray_->message_center()->GetVisibleNotifications();
-  SetNotifications(notifications);
-
-  widget->SetBounds(GetMessageCenterBounds());
-  widget->Show();
-  widget->Activate();
-}
-
-gfx::Point MessageCenterWidgetDelegate::GetCorrectedAnchor(
-    gfx::Size calculated_size) {
-  gfx::Point corrected_anchor = pos_info_.inital_anchor_point;
-
-  // Inset the width slightly so that the click point is not exactly on the edge
-  // of the message center but somewhere within the middle 60 %.
-  int insetted_width = (calculated_size.width() * 4) / 5;
-
-  if (pos_info_.taskbar_alignment == ALIGNMENT_TOP ||
-      pos_info_.taskbar_alignment == ALIGNMENT_BOTTOM) {
-    int click_point_x = tray_->mouse_click_point().x();
-
-    if (pos_info_.message_center_alignment & ALIGNMENT_RIGHT) {
-      int opposite_x_corner =
-          pos_info_.inital_anchor_point.x() - insetted_width;
-
-      // If the click point is outside the x axis length of the message center,
-      // push the message center towards the left to align with the click point.
-      if (opposite_x_corner > click_point_x)
-        corrected_anchor.set_x(pos_info_.inital_anchor_point.x() -
-                               (opposite_x_corner - click_point_x));
-    } else {
-      int opposite_x_corner =
-          pos_info_.inital_anchor_point.x() + insetted_width;
-
-      if (opposite_x_corner < click_point_x)
-        corrected_anchor.set_x(pos_info_.inital_anchor_point.x() +
-                               (click_point_x - opposite_x_corner));
-    }
-  } else if (pos_info_.taskbar_alignment == ALIGNMENT_LEFT ||
-             pos_info_.taskbar_alignment == ALIGNMENT_RIGHT) {
-    int click_point_y = tray_->mouse_click_point().y();
-
-    if (pos_info_.message_center_alignment & ALIGNMENT_BOTTOM) {
-      int opposite_y_corner =
-          pos_info_.inital_anchor_point.y() - insetted_width;
-
-      // If the click point is outside the y axis length of the message center,
-      // push the message center upwards to align with the click point.
-      if (opposite_y_corner > click_point_y)
-        corrected_anchor.set_y(pos_info_.inital_anchor_point.y() -
-                               (opposite_y_corner - click_point_y));
-    } else {
-      int opposite_y_corner =
-          pos_info_.inital_anchor_point.y() + insetted_width;
-
-      if (opposite_y_corner < click_point_y)
-        corrected_anchor.set_y(pos_info_.inital_anchor_point.y() +
-                               (click_point_y - opposite_y_corner));
-    }
-  }
-  return corrected_anchor;
-}
-
-gfx::Rect MessageCenterWidgetDelegate::GetMessageCenterBounds() {
-  gfx::Size size = GetPreferredSize();
-
-  // Make space for borders on sides.
-  size.Enlarge(border_insets_.width(), border_insets_.height());
-  gfx::Rect bounds(size);
-
-  gfx::Point corrected_anchor = GetCorrectedAnchor(size);
-
-  if (pos_info_.message_center_alignment & ALIGNMENT_TOP)
-    bounds.set_y(corrected_anchor.y());
-  if (pos_info_.message_center_alignment & ALIGNMENT_BOTTOM)
-    bounds.set_y(corrected_anchor.y() - size.height());
-  if (pos_info_.message_center_alignment & ALIGNMENT_LEFT)
-    bounds.set_x(corrected_anchor.x());
-  if (pos_info_.message_center_alignment & ALIGNMENT_RIGHT)
-    bounds.set_x(corrected_anchor.x() - size.width());
-
-  return bounds;
-}
-
-}  // namespace message_center