Adds the contextMessage field to notifications.

ui/message_center/views/notification_view.cc

 // Copyright (c) 2012 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 "ui/message_center/views/notification_view.h"
 
 #include "base/command_line.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "grit/ui_resources.h"
@@ skipping 27 matching lines @@
 const int kTextLeftPadding = kIconSize + message_center::kIconToTextPadding;
 const int kTextBottomPadding = 12;
 const int kTextRightPadding = 23;
 const int kItemTitleToMessagePadding = 3;
 const int kProgressBarWidth = message_center::kNotificationWidth -
     kTextLeftPadding - kTextRightPadding;
 const int kProgressBarBottomPadding = 0;
 const int kButtonVecticalPadding = 0;
 const int kButtonTitleTopPadding = 0;
 
-// Character limits: Displayed text will be subject to the line limits above,
+// Character limits: Displayed text will be subject to the ine limits above,

[jianli, 2013/08/28 21:30:54]

ine?

[dewittj, 2013/08/29 17:40:10]

Done.

 // but we also remove trailing characters from text to reduce processing cost.
 // Character limit = pixels per line * line limit / min. pixels per character.
 const size_t kTitleCharacterLimit =
     message_center::kNotificationWidth * message_center::kTitleLineLimit / 4;
 const size_t kMessageCharacterLimit =
     message_center::kNotificationWidth *
         message_center::kMessageExpandedLineLimit / 3;
+const size_t kContextMessageCharacterLimit =
+    message_center::kNotificationWidth *
+    message_center::kContextMessageLineLimit / 3;
 
 // Notification colors. The text background colors below are used only to keep
 // view::Label from modifying the text color and will not actually be drawn.
 // See view::Label's RecalculateColors() for details.
 const SkColor kRegularTextBackgroundColor = SK_ColorWHITE;
 const SkColor kDimTextBackgroundColor = SK_ColorWHITE;
+const SkColor kContextTextBackgroundColor = SK_ColorWHITE;
 
 // static
 views::Background* MakeBackground(
     SkColor color = message_center::kNotificationBackgroundColor) {
   return views::Background::CreateSolidBackground(color);
 }
 
 // static
 views::Border* MakeEmptyBorder(int top, int left, int bottom, int right) {
   return views::Border::CreateEmptyBorder(top, left, bottom, right);
@@ skipping 414 matching lines @@
         ui::TruncateString(notification.message(), kMessageCharacterLimit));
     message_view_->SetLineHeight(kMessageLineHeight);
     message_view_->SetVisible(!is_expanded() || !notification.items().size());
     message_view_->SetColors(message_center::kDimTextColor,
                              kDimTextBackgroundColor);
     message_view_->set_border(MakeTextBorder(padding, 4, 0));
     top_view_->AddChildView(message_view_);
     accessible_lines.push_back(notification.message());
   }
 
+  // Create the context message view if appropriate.
+  context_message_view_ = NULL;
+  LOG(INFO) << "Context message: " << notification.context_message();
+  if (!notification.context_message().empty()) {
+    gfx::Font font = views::Label().font().DeriveFont(0, gfx::Font::ITALIC);
+    int padding = kContextMessageLineHeight - views::Label().font().GetHeight();
+    context_message_view_ =
+        new BoundedLabel(ui::TruncateString(notification.context_message(),
+                                            kContextMessageCharacterLimit),
+                         font);
+    context_message_view_->SetLineLimit(
+        message_center::kContextMessageLineLimit);
+    context_message_view_->SetLineHeight(kContextMessageLineHeight);
+    context_message_view_->SetColors(message_center::kContextTextColor,
+                                     kContextTextBackgroundColor);
+    context_message_view_->set_border(MakeTextBorder(padding, 4, 0));
+    top_view_->AddChildView(context_message_view_);
+    accessible_lines.push_back(notification.context_message());
+  }
+
   // Create the progress bar view.
   progress_bar_view_ = NULL;
   if (notification.type() == NOTIFICATION_TYPE_PROGRESS) {
     progress_bar_view_ = new NotificationProgressBar();
     progress_bar_view_->set_border(MakeProgressBarBorder(
         message_center::kProgressBarTopPadding, kProgressBarBottomPadding));
     progress_bar_view_->SetValue(notification.progress() / 100.0);
     top_view_->AddChildView(progress_bar_view_);
   }
 
@@ skipping 251 matching lines @@
   return message_view_ ?
          message_view_->GetLinesForWidthAndLimit(width, limit) : 0;
 }
 
 int NotificationView::GetMessageHeight(int width, int limit) {
   return message_view_ ?
          message_view_->GetSizeForWidthAndLines(width, limit).height() : 0;
 }
 
 }  // namespace message_center