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// Copyright (c) 2010 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_DESKTOP_NOTIFICATION_SERVICE_H_
#define CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATION_SERVICE_H_
#pragma once
#include <vector>
#include "base/basictypes.h"
#include "base/string16.h"
#include "chrome/browser/notifications/notification.h"
#include "chrome/browser/prefs/pref_change_registrar.h"
#include "chrome/common/content_settings.h"
#include "chrome/common/notification_observer.h"
#include "chrome/common/notification_registrar.h"
#include "chrome/common/notification_service.h"
#include "googleurl/src/gurl.h"
#include "third_party/WebKit/WebKit/chromium/public/WebTextDirection.h"
class NotificationUIManager;
class NotificationsPrefsCache;
class PrefService;
class Profile;
class Task;
class TabContents;
struct ViewHostMsg_ShowNotification_Params;
// The DesktopNotificationService is an object, owned by the Profile,
// which provides the creation of desktop "toasts" to web pages and workers.
class DesktopNotificationService : public NotificationObserver {
public:
enum DesktopNotificationSource {
PageNotification,
WorkerNotification
};
DesktopNotificationService(Profile* profile,
NotificationUIManager* ui_manager);
virtual ~DesktopNotificationService();
// Requests permission (using an info-bar) for a given origin.
// |callback_context| contains an opaque value to pass back to the
// requesting process when the info-bar finishes.
void RequestPermission(const GURL& origin,
int process_id,
int route_id,
int callback_context,
TabContents* tab);
// ShowNotification is called on the UI thread handling IPCs from a child
// process, identified by |process_id| and |route_id|. |source| indicates
// whether the script is in a worker or page. |params| contains all the
// other parameters supplied by the worker or page.
bool ShowDesktopNotification(
const ViewHostMsg_ShowNotification_Params& params,
int process_id, int route_id, DesktopNotificationSource source);
// Cancels a notification. If it has already been shown, it will be
// removed from the screen. If it hasn't been shown yet, it won't be
// shown.
bool CancelDesktopNotification(int process_id,
int route_id,
int notification_id);
// Methods to setup and modify permission preferences.
void GrantPermission(const GURL& origin);
void DenyPermission(const GURL& origin);
// NotificationObserver implementation.
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
NotificationsPrefsCache* prefs_cache() { return prefs_cache_; }
// Creates a data:xxxx URL which contains the full HTML for a notification
// using supplied icon, title, and text, run through a template which contains
// the standard formatting for notifications.
static string16 CreateDataUrl(const GURL& icon_url,
const string16& title,
const string16& body,
WebKit::WebTextDirection dir);
// Creates a data:xxxx URL which contains the full HTML for a notification
// using resource template which contains the standard formatting for
// notifications.
static string16 CreateDataUrl(int resource,
const std::vector<std::string>& subst);
// The default content setting determines how to handle origins that haven't
// been allowed or denied yet.
ContentSetting GetDefaultContentSetting();
void SetDefaultContentSetting(ContentSetting setting);
// NOTE: This should only be called on the UI thread.
void ResetToDefaultContentSetting();
// Returns all origins that explicitly have been allowed.
std::vector<GURL> GetAllowedOrigins();
// Returns all origins that explicitly have been denied.
std::vector<GURL> GetBlockedOrigins();
// Removes an origin from the "explicitly allowed" set.
void ResetAllowedOrigin(const GURL& origin);
// Removes an origin from the "explicitly denied" set.
void ResetBlockedOrigin(const GURL& origin);
// Clears the sets of explicitly allowed and denied origins.
void ResetAllOrigins();
static void RegisterUserPrefs(PrefService* user_prefs);
private:
void InitPrefs();
void StartObserving();
void StopObserving();
// Takes a notification object and shows it in the UI.
void ShowNotification(const Notification& notification);
// Save a permission change to the profile.
void PersistPermissionChange(const GURL& origin, bool is_allowed);
// Returns a display name for an origin, to be used in permission infobar
// or on the frame of the notification toast. Different from the origin
// itself when dealing with extensions.
string16 DisplayNameForOrigin(const GURL& origin);
ContentSetting GetContentSetting(const GURL& origin);
// The profile which owns this object.
Profile* profile_;
// A cache of preferences which is accessible only on the IO thread
// to service synchronous IPCs.
scoped_refptr<NotificationsPrefsCache> prefs_cache_;
// Non-owned pointer to the notification manager which manages the
// UI for desktop toasts.
NotificationUIManager* ui_manager_;
PrefChangeRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(DesktopNotificationService);
};
#endif // CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATION_SERVICE_H_
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