[Notification] Make HTML5 Notification use ActionCenter on Windows 10, behind Flags.

chrome/browser/notifications/notification_toast_helper_win.h

Index: chrome/browser/notifications/notification_toast_helper_win.h
diff --git a/chrome/browser/notifications/notification_toast_helper_win.h b/chrome/browser/notifications/notification_toast_helper_win.h
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+// Copyright 2016 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_NOTIFICATIONS_NOTIFICATION_TOAST_HELPER_WIN_H_
+#define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_TOAST_HELPER_WIN_H_
+
+#include <activation.h>
+#include <d2d1_1.h>
+#include <d3d11_1.h>
+#include <roapi.h>
+#include <shlwapi.h>
+#include <wincodec.h>
+#include <windows.h>
+#include <windows.applicationModel.core.h>
+#include <windows.applicationModel.datatransfer.h>
+#include <windows.data.xml.dom.h>
+#include <windows.graphics.printing.h>
+#include <windows.storage.pickers.h>
+#include <windows.ui.notifications.h>
+#include <wrl/implements.h>
+#include <wrl/module.h>
+#include <wrl/event.h>
+#include <wrl/wrappers/corewrappers.h>
+
+#include "base/macros.h"
+#include "base/strings/string16.h"
+
+namespace mswr =       Microsoft::WRL;
+namespace mswrw =      Microsoft::WRL::Wrappers;
+
+namespace winapp =     ABI::Windows::ApplicationModel;
+namespace windata =    ABI::Windows::Data;
+namespace winxml =     ABI::Windows::Data::Xml;
+namespace windevs =    ABI::Windows::Devices;
+namespace winfoundtn = ABI::Windows::Foundation;
+namespace wingfx =     ABI::Windows::Graphics;
+namespace winui =      ABI::Windows::UI;
+namespace winsys =     ABI::Windows::System;
+namespace winstorage = ABI::Windows::Storage;
+
+namespace base {
+class FilePath;
+}  // namespace base
+
+typedef winfoundtn::ITypedEventHandler<
+    winui::Notifications::ToastNotification*, IInspectable*>
+    ToastActivatedHandler;
+
+typedef winfoundtn::ITypedEventHandler<
+    winui::Notifications::ToastNotification*,
+    winui::Notifications::ToastDismissedEventArgs*> ToastDismissedHandler;
+
+typedef winfoundtn::ITypedEventHandler<
+    winui::Notifications::ToastNotification*,
+    winui::Notifications::ToastFailedEventArgs*> ToastFailedHandler;
+
+// This class provides an abstraction to COM calls to display and process
+// Notification Toast in Windows. Features:
+// - Stores HRESULT |hr_|, and coarse accessors HasFailed() or StillOkay().
+// - Failure is permanent, and on failure all subsequent calls become no-op.
+// - An implicit "current element" is stored, which is the target of various
+//   XML operations.
+class NotificationToastHelperWin {
+ public:
+  NotificationToastHelperWin() = default;
+  ~NotificationToastHelperWin() = default;
+
+  bool StillOkay() const { return SUCCEEDED(hr_); }
+  bool HasFailed() const { return !SUCCEEDED(hr_); }
+
+  // Creates |toast_manager_|.
+  void CreateToastManager();
+
+  // Loads |toast_xml_| from template, also loads |document_element_|.
+  void LoadXMLFromTemplate(winui::Notifications::ToastTemplateType type);
+
+  // For debugging.
+  // TODO(huangs): Remove.
+  // Loads |toast_xml_| directly from |xml_str|.
+  void LoadXMLFromString(const base::string16& xml_str);
+
+  // For debugging.
+  // TODO(huangs): Remove.
+  void AlertToastXml();
+
+  // Selects |document_element_| as the "current element".
+  void SelectDocument();
+
+  // Selects element with |tag_name| and at |index| as the "current element".
+  void SelectElementByTagNameAndIndex(const base::string16& tag_name,
+                                      unsigned int index);
+
+  // Converts a file path, e.g., "C:\\User\\test\\AppData\\Local\\Temp\\a.tmp"
+  // to a file URL, e.g., "file:///C:/User/test/AppData/Local/Temp/a.tmp".
+  base::string16 FilePathToFileUrl(const base::FilePath& file_path);
+
+  // Removes the current element, and selects the parent.
+  void RemoveElement();
+
+  // Appends a text node to the "current element".
+  void AppendText(const base::string16& text);
+
+  // Sets an attribute of the "current element".
+  void SetAttribute(const base::string16& name, const base::string16& value);
+
+  // Reads an attribute of the "current element".
+  base::string16 GetAttribute(const base::string16& name);
+
+  // Creates a toast notifier.
+  void CreateToastNotifier();
+
+  // Creates a toast notification.
+  void CreateToastNotification();
+
+  // Loads an existing |toast_notification|. Also loads |toast_xml_| and
+  // |document_element_|.
+  void LoadNotificationAndXml(
+      winui::Notifications::IToastNotification* toast_notification);
+
+  // Displays a toast notification, using |toast_xml_|.
+  void Show(mswr::ComPtr<ToastActivatedHandler> activated_handler,
+            mswr::ComPtr<ToastDismissedHandler> dismissed_handler,
+            mswr::ComPtr<ToastFailedHandler> failed_handler,
+            EventRegistrationToken* activated_token,
+            EventRegistrationToken* dismissed_token,
+            EventRegistrationToken* failed_token);
+
+ private:
+  // Returned HSTRING should be deallocated by ::WindowsDeleteString(). This can
+  // be done by attaching the return value to mswrw::HString.
+  HSTRING MakeHString(const base::string16& str);
+
+  // Creates an intermediate text node.
+  void CreateTextNode(const base::string16& text,
+                      mswr::ComPtr<winxml::Dom::IXmlNode>* node);
+
+  HRESULT hr_ = S_OK;
+  mswr::ComPtr<winui::Notifications::IToastNotificationManagerStatics>
+      toast_manager_;
+  mswr::ComPtr<winxml::Dom::IXmlDocument> toast_xml_;
+  mswr::ComPtr<winxml::Dom::IXmlElement> document_element_;
+  mswr::ComPtr<winxml::Dom::IXmlElement> cur_element_;
+
+  mswr::ComPtr<winui::Notifications::IToastNotifier> notifier_;
+  mswr::ComPtr<winui::Notifications::IToastNotification> toast_notification_;
+
+  DISALLOW_COPY_AND_ASSIGN(NotificationToastHelperWin);
+};
+
+#endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_TOAST_HELPER_WIN_H_