Initial Implementation of Download Notification

chrome/browser/download/notification/download_notification_item.h

+// Copyright 2015 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.
+
+#ifndef CHROME_BROWSER_DOWNLOAD_NOTIFICATION_DOWNLOAD_NOTIFICATION_ITEM_H_
+#define CHROME_BROWSER_DOWNLOAD_NOTIFICATION_DOWNLOAD_NOTIFICATION_ITEM_H_
+
+#include "chrome/browser/download/notification/download_notification_item.h"
+
+#include "base/strings/string_number_conversions.h"
+#include "chrome/browser/download/download_commands.h"
+#include "content/public/browser/download_item.h"
+#include "grit/theme_resources.h"
+#include "ui/message_center/message_center.h"
+#include "ui/message_center/message_center_observer.h"
+#include "ui/message_center/notification.h"
+#include "ui/message_center/notification_delegate.h"
+
+using message_center::Notification;
+
+namespace test {
+class DownloadNotificationItemTest;
+}
+
+class DownloadNotificationItem
+    : public message_center::NotificationDelegate,
+      public message_center::MessageCenterObserver,
+      public content::DownloadItem::Observer {
+
+ public:
+  class Delegate {
+   public:
+    virtual void OnDownloadStarted(DownloadNotificationItem* item) = 0;
+    virtual void OnDownloadStopped(DownloadNotificationItem* item) = 0;
+    virtual void OnDownloadRemoved(DownloadNotificationItem* item) = 0;
+  };
+
+  DownloadNotificationItem(
+      content::DownloadItem* item,
+      Delegate* delegate);
+
+ protected:
+  ~DownloadNotificationItem() override;
+
+ private:
+  // message_center::NotificationDelegate overrides:
+  void Close(bool by_user) override;
+  void Click() override;
+  bool HasClickedListener() override;
+  void ButtonClick(int button_index) override;
+
+  // message_center::MessageCenterObserver overrides:
+  void OnNotificationRemoved(const std::string& id, bool by_user) override;
+
+  // DownloadItem::Observer overrides:
+  void OnDownloadUpdated(content::DownloadItem* item) override;
+  void OnDownloadOpened(content::DownloadItem* item) override;
+  void OnDownloadRemoved(content::DownloadItem* item) override;

[asanka, 2015/02/20 23:34:40]

You also need to listen for OnDownloadDestroyed().

If you see this notification, then |item| is about to be deleted. 

[yoshiki, 2015/02/24 21:30:57]

Done.

+
+  void SetNotificationData();

[asanka, 2015/02/20 23:34:40]

Reword? It's updating the notification based on the state of the item.

[yoshiki, 2015/02/24 21:30:57]

Done. Does the new name look good for you?

+  void SetImageToNotification(int resource_id);

[asanka, 2015/02/20 23:34:40]

Reword?

[yoshiki, 2015/02/24 21:30:57]

Done. Does the new name look good for you?

+
+  // Returns a short one-line status string for the download.
+  base::string16 GetTitle() const;
+
+  // Returns a short one-line status string for a download command.
+  base::string16 GetCommandLabel(DownloadCommands::Command command) const;
+
+  // Get the warning test to notify a dangerous download. Should only be called
+  // if IsDangerous() is true.
+  base::string16 GetWarningText() const;
+
+  scoped_ptr<std::vector<DownloadCommands::Command> >
+      GetPossibleActions() const;
+
+  scoped_ptr<Notification> notification_;
+  scoped_ptr<std::vector<DownloadCommands::Command> > button_actions_;
+
+  bool openable_;
+  bool downloading_;
+  bool popup_closing_;
+  int image_resource_id_;
+  message_center::MessageCenter* message_center_;
+  content::DownloadItem* item_;
+
+  Delegate* const delegate_;
+
+  friend class test::DownloadNotificationItemTest;
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadNotificationItem);
+};
+
+#endif  // CHROME_BROWSER_DOWNLOAD_NOTIFICATION_DOWNLOAD_NOTIFICATION_ITEM_H_