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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ui/message_center/views/message_center_bubble.h"
      6 
      7 #include "ui/message_center/message_center_style.h"
      8 #include "ui/message_center/message_center_util.h"
      9 #include "ui/message_center/views/message_center_view.h"
     10 #include "ui/views/layout/fill_layout.h"
     11 #include "ui/views/widget/widget.h"
     12 
     13 namespace message_center {
     14 
     15 // ContentsView ////////////////////////////////////////////////////////////////
     16 
     17 // Handles changes in MessageCenterView sizes.
     18 class ContentsView : public views::View {
     19  public:
     20   explicit ContentsView(MessageCenterBubble* bubble, views::View* contents);
     21   virtual ~ContentsView();
     22 
     23   // Overridden from views::View:
     24   virtual int GetHeightForWidth(int width) OVERRIDE;
     25 
     26  protected:
     27   // Overridden from views::View:
     28   virtual void ChildPreferredSizeChanged(View* child) OVERRIDE;
     29 
     30  private:
     31   base::WeakPtr<MessageCenterBubble> bubble_;
     32 
     33   DISALLOW_COPY_AND_ASSIGN(ContentsView);
     34 };
     35 
     36 ContentsView::ContentsView(MessageCenterBubble* bubble, views::View* contents)
     37     : bubble_(bubble->AsWeakPtr()) {
     38   SetLayoutManager(new views::FillLayout());
     39   AddChildView(contents);
     40 }
     41 
     42 ContentsView::~ContentsView() {
     43 }
     44 
     45 int ContentsView::GetHeightForWidth(int width) {
     46   DCHECK_EQ(1, child_count());
     47   int contents_width = std::max(width - GetInsets().width(), 0);
     48   int contents_height = child_at(0)->GetHeightForWidth(contents_width);
     49   return contents_height + GetInsets().height();
     50 }
     51 
     52 void ContentsView::ChildPreferredSizeChanged(View* child) {
     53   // TODO(dharcourt): Reduce the amount of updating this requires.
     54   if (bubble_.get())
     55     bubble_->bubble_view()->UpdateBubble();
     56 }
     57 
     58 // MessageCenterBubble /////////////////////////////////////////////////////////
     59 
     60 MessageCenterBubble::MessageCenterBubble(MessageCenter* message_center,
     61                                          MessageCenterTray* tray,
     62                                          bool first_item_has_no_margin)
     63     : MessageBubbleBase(message_center, tray),
     64       message_center_view_(NULL),
     65       initially_settings_visible_(false),
     66       first_item_has_no_margin_(first_item_has_no_margin) {
     67 }
     68 
     69 MessageCenterBubble::~MessageCenterBubble() {
     70 }
     71 
     72 void MessageCenterBubble::SetSettingsVisible() {
     73   if (message_center_view_)
     74     message_center_view_->SetSettingsVisible(true);
     75   else
     76     initially_settings_visible_ = true;
     77 }
     78 
     79 views::TrayBubbleView::InitParams MessageCenterBubble::GetInitParams(
     80     views::TrayBubbleView::AnchorAlignment anchor_alignment) {
     81   views::TrayBubbleView::InitParams init_params =
     82       GetDefaultInitParams(anchor_alignment);
     83   init_params.min_width += kMarginBetweenItems * 2;
     84   init_params.max_width += kMarginBetweenItems * 2;
     85   init_params.max_height = max_height();
     86   init_params.can_activate = true;
     87   init_params.first_item_has_no_margin = first_item_has_no_margin_;
     88   return init_params;
     89 }
     90 
     91 void MessageCenterBubble::InitializeContents(
     92     views::TrayBubbleView* new_bubble_view) {
     93   set_bubble_view(new_bubble_view);
     94   bubble_view()->GetWidget()->AddObserver(this);
     95   message_center_view_ = new MessageCenterView(
     96       message_center(),
     97       tray(),
     98       max_height(),
     99       initially_settings_visible_,
    100       false /* MessageCenterBubble should be used only on ChromeOS.
    101                Message center is never shown top down in ChromeOS. */);
    102   bubble_view()->AddChildView(new ContentsView(this, message_center_view_));
    103   // Resize the content of the bubble view to the given bubble size. This is
    104   // necessary in case of the bubble border forcing a bigger size then the
    105   // |new_bubble_view| actually wants. See crbug.com/169390.
    106   bubble_view()->Layout();
    107   UpdateBubbleView();
    108 }
    109 
    110 void MessageCenterBubble::OnBubbleViewDestroyed() {
    111   message_center_view_ = NULL;
    112 }
    113 
    114 void MessageCenterBubble::UpdateBubbleView() {
    115   if (!bubble_view())
    116     return;  // Could get called after view is closed
    117   const NotificationList::Notifications& notifications =
    118       message_center()->GetVisibleNotifications();
    119   message_center_view_->SetNotifications(notifications);
    120   bubble_view()->GetWidget()->Show();
    121   bubble_view()->UpdateBubble();
    122 }
    123 
    124 void MessageCenterBubble::OnWidgetClosing(views::Widget* widget) {
    125   bubble_view()->GetWidget()->RemoveObserver(this);
    126   if (message_center_view_)
    127     message_center_view_->SetIsClosing(true);
    128 }
    129 
    130 void MessageCenterBubble::OnMouseEnteredView() {
    131 }
    132 
    133 void MessageCenterBubble::OnMouseExitedView() {
    134 }
    135 
    136 size_t MessageCenterBubble::NumMessageViewsForTest() const {
    137   return message_center_view_->NumMessageViewsForTest();
    138 }
    139 
    140 }  // namespace message_center
    141