Move overflow indicator to notifiction header.

ui/message_center/views/notification_view_md.cc

Index: ui/message_center/views/notification_view_md.cc
diff --git a/ui/message_center/views/notification_view_md.cc b/ui/message_center/views/notification_view_md.cc
index 2f9e2c54fd3867cc1128fe72d7664471bc5c9b29..9625f54d48f1e5f11fa31e8990e3ee3dcae9ae9e 100644
--- a/ui/message_center/views/notification_view_md.cc
+++ b/ui/message_center/views/notification_view_md.cc
@@ -72,7 +72,6 @@ const SkColor kActionButtonTextColor = SkColorSetRGB(0x33, 0x67, 0xD6);
 constexpr int kMaxLinesForMessageView = 1;
 constexpr int kMaxLinesForExpandedMessageView = 4;
 
-constexpr int kListNotificationOverflowIndicatorSpacing = 4;
 constexpr int kCompactTitleMessageViewSpacing = 12;
 
 constexpr int kProgressBarHeight = 4;
@@ -117,85 +116,31 @@ class ItemView : public views::View {
   explicit ItemView(const message_center::NotificationItem& item);
   ~ItemView() override;
 
-  void SetRemainingCount(int num_remaining);
-  void SetRemainingCountVisible(bool visible);
-
  private:
-  class LayoutManager : public views::FillLayout {
-   public:
-    LayoutManager(ItemView* item_view)
-        : views::FillLayout(), item_view_(item_view) {}
-
-    void Layout(View* host) override {
-      gfx::Rect container_bounds = host->GetContentsBounds();
-      if (item_view_->remaining_count_->visible()) {
-        // Show the full content of the overflow indicator and collapse the
-        // message container.
-        container_bounds.set_width(
-            container_bounds.width() -
-            item_view_->remaining_count_->GetPreferredSize().width() -
-            kListNotificationOverflowIndicatorSpacing);
-      }
-      item_view_->container_->SetBoundsRect(container_bounds);
-      item_view_->remaining_count_->SetBoundsRect(host->GetContentsBounds());
-    }
-
-   private:
-    ItemView* item_view_;
-  };
-
-  // Container of the title and the message.
-  views::View* container_;
-  // Overflow indicator e.g. "+3" shown on the right bottom.
-  views::Label* remaining_count_;
-
   DISALLOW_COPY_AND_ASSIGN(ItemView);
 };
 
 ItemView::ItemView(const message_center::NotificationItem& item) {
-  SetLayoutManager(new ItemView::LayoutManager(this));
-
-  container_ = new views::View;
-  AddChildView(container_);
-  container_->SetLayoutManager(
-      new views::BoxLayout(views::BoxLayout::kHorizontal, gfx::Insets(),
-                           message_center::kItemTitleToMessagePadding));
+  SetLayoutManager(
+      new views::BoxLayout(views::BoxLayout::kHorizontal, gfx::Insets(), 0));
 
   views::Label* title = new views::Label(item.title);
   title->set_collapse_when_hidden(true);
   title->SetHorizontalAlignment(gfx::ALIGN_LEFT);
   title->SetEnabledColor(message_center::kRegularTextColor);
   title->SetBackgroundColor(message_center::kDimTextBackgroundColor);
-  container_->AddChildView(title);
+  AddChildView(title);
 
-  views::Label* message = new views::Label(item.message);
+  views::Label* message = new views::Label(l10n_util::GetStringFUTF16(
+      IDS_MESSAGE_CENTER_LIST_NOTIFICATION_MESSAGE_WITH_DIVIDER, item.message));
   message->set_collapse_when_hidden(true);
   message->SetHorizontalAlignment(gfx::ALIGN_LEFT);
   message->SetEnabledColor(message_center::kDimTextColor);
   message->SetBackgroundColor(message_center::kDimTextBackgroundColor);
-  container_->AddChildView(message);
-
-  remaining_count_ = new views::Label();
-  remaining_count_->SetHorizontalAlignment(gfx::ALIGN_RIGHT);
-  remaining_count_->SetEnabledColor(message_center::kDimTextColor);
-  remaining_count_->SetBackgroundColor(message_center::kDimTextBackgroundColor);
-  remaining_count_->SetVisible(false);
-  AddChildView(remaining_count_);
+  AddChildView(message);
 }
 
-ItemView::~ItemView() {}
-
-void ItemView::SetRemainingCount(int num_remaining) {
-  if (num_remaining > 0) {
-    remaining_count_->SetText(l10n_util::GetStringFUTF16Int(
-        IDS_MESSAGE_CENTER_LIST_NOTIFICATION_OVERFLOW_INDICATOR,
-        num_remaining));
-  }
-}
-
-void ItemView::SetRemainingCountVisible(bool visible) {
-  remaining_count_->SetVisible(visible);
-}
+ItemView::~ItemView() = default;
 
 // CompactTitleMessageView /////////////////////////////////////////////////////
 
@@ -637,13 +582,11 @@ void NotificationViewMD::CreateOrUpdateListItemViews(
     left_content_->AddChildView(item_view);
   }
 
-  if (!item_views_.empty()) {
-    item_views_.front()->SetRemainingCount(items.size() - 1);
-    item_views_.back()->SetRemainingCount(items.size() - item_views_.size());
+  list_items_count_ = items.size();
 
-    // Needed when CreateOrUpdateViews is called for update.
+  // Needed when CreateOrUpdateViews is called for update.
+  if (!item_views_.empty())
     left_content_->InvalidateLayout();
-  }
 }
 
 void NotificationViewMD::CreateOrUpdateIconView(
@@ -811,13 +754,12 @@ void NotificationViewMD::UpdateViewForExpandedState(bool expanded) {
   if (image_container_)
     image_container_->SetVisible(expanded);
   actions_row_->SetVisible(expanded && actions_row_->has_children());
-  for (size_t i = 1; i < item_views_.size(); ++i) {
+  for (size_t i = kMaxLinesForMessageView; i < item_views_.size(); ++i) {
     item_views_[i]->SetVisible(expanded);
   }
-  if (!item_views_.empty()) {
-    item_views_.front()->SetRemainingCountVisible(!expanded);
-    item_views_.back()->SetRemainingCountVisible(expanded);
-  }
+  header_row_->SetOverflowIndicator(
+      list_items_count_ -
+      (expanded ? item_views_.size() : kMaxLinesForMessageView));
 }
 
 void NotificationViewMD::UpdateControlButtonsVisibility() {