// Copyright (c) 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/notification_bubble_wrapper_win.h"

#include "base/utf_string_conversions.h"
#include "chrome/browser/ui/views/message_center/web_notification_tray_win.h"
#include "grit/ui_strings.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/gfx/size.h"
#include "ui/message_center/views/message_bubble_base.h"
#include "ui/message_center/views/message_center_bubble.h"
#include "ui/message_center/views/message_popup_bubble.h"
#include "ui/views/bubble/bubble_delegate.h"
#include "ui/views/bubble/tray_bubble_view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
#include "ui/views/win/hwnd_util.h"

namespace message_center {

namespace internal {

NotificationBubbleWrapperWin::NotificationBubbleWrapperWin(
    WebNotificationTrayWin* tray,
    scoped_ptr<message_center::MessageBubbleBase> bubble,
    BubbleType bubble_type)
    : bubble_(bubble.Pass()),
      bubble_type_(bubble_type),
      bubble_view_(NULL),
      bubble_widget_(NULL),
      tray_(tray) {
  // Windows-specific initialization.
  views::TrayBubbleView::AnchorAlignment anchor_alignment =
      tray_->GetAnchorAlignment();
  views::TrayBubbleView::InitParams init_params =
      bubble_->GetInitParams(anchor_alignment);
  init_params.close_on_deactivate = false;
  init_params.arrow_alignment = views::BubbleBorder::ALIGN_EDGE_TO_ANCHOR_EDGE;
  init_params.arrow_paint_type = views::BubbleBorder::PAINT_NONE;
  // TODO(dewittj): Show big shadow without blocking clicks.
  init_params.shadow = views::BubbleBorder::NO_SHADOW;

  bubble_view_ = views::TrayBubbleView::Create(
      tray_->GetBubbleWindowContainer(), NULL, this, &init_params);

  bubble_widget_ = views::BubbleDelegateView::CreateBubble(bubble_view_);

  // Remove the bubbles for Notifications and Notification Center from taskbar
  // and alt-tab rotation.
  HWND hwnd = views::HWNDForWidget(bubble_widget_);
  LONG_PTR ex_styles = ::GetWindowLongPtr(hwnd, GWL_EXSTYLE);
  ex_styles |= WS_EX_TOOLWINDOW;
  ::SetWindowLongPtr(hwnd, GWL_EXSTYLE, ex_styles);

  bubble_widget_->AddObserver(this);
  bubble_widget_->StackAtTop();
  bubble_widget_->SetAlwaysOnTop(true);
  // Popups should appear on top of everything, but not disturb the user's
  // focus since they could appear at any time.  Message Center is always
  // shown as a result of user action so it can be activated here.
  if (bubble_type_ != BUBBLE_TYPE_POPUP)
    bubble_widget_->Activate();
  bubble_view_->InitializeAndShowBubble();

  bubble_view_->set_close_on_deactivate(true);
  bubble_->InitializeContents(bubble_view_);
}

NotificationBubbleWrapperWin::~NotificationBubbleWrapperWin() {
  bubble_.reset();
  if (bubble_widget_) {
    bubble_widget_->RemoveObserver(this);
    bubble_widget_->Close();
  }
}

void NotificationBubbleWrapperWin::OnWidgetDestroying(views::Widget* widget) {
  DCHECK_EQ(widget, bubble_widget_);
  bubble_widget_->RemoveObserver(this);
  bubble_widget_ = NULL;
  tray_->HideBubbleWithView(bubble_view_);
}

void NotificationBubbleWrapperWin::BubbleViewDestroyed() {
  bubble_->BubbleViewDestroyed();
}

void NotificationBubbleWrapperWin::OnMouseEnteredView() {
  bubble_->OnMouseEnteredView();
}

void NotificationBubbleWrapperWin::OnMouseExitedView() {
  bubble_->OnMouseExitedView();
}

string16 NotificationBubbleWrapperWin::GetAccessibleNameForBubble() {
  return l10n_util::GetStringUTF16(IDS_MESSAGE_CENTER_ACCESSIBLE_NAME);
}

gfx::Rect NotificationBubbleWrapperWin::GetAnchorRect(
    views::Widget* anchor_widget,
    AnchorType anchor_type,
    AnchorAlignment anchor_alignment) {
  if (bubble_type_ == BUBBLE_TYPE_POPUP)
    return tray_->GetPopupAnchor();
  return tray_->GetMessageCenterAnchor();
}

void NotificationBubbleWrapperWin::HideBubble(
    const views::TrayBubbleView* bubble_view) {
  tray_->HideBubbleWithView(bubble_view);
}

}  // namespace internal

}  // namespace message_center