Initial Implementation of Download Notification

chrome/browser/download/notification/download_notification_manager.cc

+// 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.
+
+#include "chrome/browser/download/notification/download_notification_manager.h"
+
+#include "base/strings/string_number_conversions.h"
+#include "chrome/browser/download/download_item_model.h"
+#include "chrome/browser/download/notification/download_notification_item.h"
+#include "chrome/grit/chromium_strings.h"
+#include "content/public/browser/download_item.h"
+#include "grit/theme_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/message_center/message_center.h"
+#include "ui/message_center/notification.h"
+#include "ui/message_center/notification_delegate.h"
+
+using message_center::Notification;
+
+DownloadNotificationManager::DownloadNotificationManager(Profile* profile)
+  : is_downloading_multiple_files_(false) {
+}
+
+DownloadNotificationManager::~DownloadNotificationManager() {
+}
+
+void DownloadNotificationManager::OnDownloadNotificationItemDestroying(
+    DownloadNotificationItem* item) {
+  CHECK(items_.find(item) != items_.end());
+
+  items_.erase(item);
+  downloading_items_.erase(item);
+  item->Release();
+}
+
+void DownloadNotificationManager::UpdateDownloadingMultipleFiles() {
+  bool is_downloading_multiple_files = (downloading_items_.size() > 1);
+
+  if (is_downloading_multiple_files != is_downloading_multiple_files_)
+    is_downloading_multiple_files_ = is_downloading_multiple_files;
+
+  if (is_downloading_multiple_files) {
+    // TODO(yoshiki): Hides the single progress and shows the multiple one.
+  } else {
+    // TODO(yoshiki): Hides the multiple progress and shows the single one.
+  }
+}
+
+void DownloadNotificationManager::OnDownloadStarted(
+    DownloadNotificationItem* item) {
+  downloading_items_.insert(item);
+  UpdateDownloadingMultipleFiles();
+}
+
+void DownloadNotificationManager::OnDownloadStopped(
+    DownloadNotificationItem* item) {
+  downloading_items_.erase(item);
+  UpdateDownloadingMultipleFiles();
+}
+
+void DownloadNotificationManager::OnNewDownloadReady(
+    content::DownloadItem* download) {
+  DownloadNotificationItem* item = new DownloadNotificationItem(download, this);
+  item->AddRef();
+  items_.insert(item);
+  UpdateDownloadingMultipleFiles();
+}