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// Copyright 2013 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 UI_MESSAGE_CENTER_NOTIFICATION_DELEGATE_H_
#define UI_MESSAGE_CENTER_NOTIFICATION_DELEGATE_H_
#include <memory>
#include <string>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/strings/string16.h"
#include "ui/message_center/message_center_export.h"
#if defined(TOOLKIT_VIEWS) && !defined(OS_MACOSX)
#include "ui/message_center/views/custom_notification_content_view_delegate.h"
#endif
namespace message_center {
// Delegate for a notification. This class has two roles: to implement callback
// methods for notification, and to provide an identity of the associated
// notification.
class MESSAGE_CENTER_EXPORT NotificationDelegate
: public base::RefCountedThreadSafe<NotificationDelegate> {
public:
// To be called when the desktop notification is actually shown.
virtual void Display();
// To be called when the desktop notification is closed. If closed by a
// user explicitly (as opposed to timeout/script), |by_user| should be true.
virtual void Close(bool by_user);
// Returns true if the delegate can handle click event.
virtual bool HasClickedListener();
// To be called when a desktop notification is clicked.
virtual void Click();
// To be called when the user clicks a button in a notification.
virtual void ButtonClick(int button_index);
// To be called when the user types a reply to a notification.
// TODO(crbug.com/599859) Support this feature in the message center -
// currently it is only supported on Android.
virtual void ButtonClickWithReply(int button_index,
const base::string16& reply);
// To be called when the user clicks the settings button in a notification.
virtual void SettingsClick();
// To be called in order to detect if a settings button should be displayed.
virtual bool ShouldDisplaySettingsButton();
#if defined(TOOLKIT_VIEWS) && !defined(OS_MACOSX)
// To be called to construct the contents view of a popup for notifications
// whose type is NOTIFICATION_TYPE_CUSTOM.
virtual std::unique_ptr<CustomContent> CreateCustomContent();
#endif
// Indicates whether this notification should be displayed when there is
// fullscreen content being displayed.
virtual bool ShouldDisplayOverFullscreen() const;
protected:
virtual ~NotificationDelegate() {}
private:
friend class base::RefCountedThreadSafe<NotificationDelegate>;
};
// A simple notification delegate which invokes the passed closure when clicked.
class MESSAGE_CENTER_EXPORT HandleNotificationClickedDelegate
: public NotificationDelegate {
public:
explicit HandleNotificationClickedDelegate(const base::Closure& closure);
// message_center::NotificationDelegate overrides:
void Click() override;
bool HasClickedListener() override;
protected:
~HandleNotificationClickedDelegate() override;
private:
std::string id_;
base::Closure closure_;
DISALLOW_COPY_AND_ASSIGN(HandleNotificationClickedDelegate);
};
// A notification delegate which invokes a callback when a notification button
// has been clicked.
class MESSAGE_CENTER_EXPORT HandleNotificationButtonClickDelegate
: public NotificationDelegate {
public:
typedef base::Callback<void(int)> ButtonClickCallback;
explicit HandleNotificationButtonClickDelegate(
const ButtonClickCallback& button_callback);
// message_center::NotificationDelegate overrides:
void ButtonClick(int button_index) override;
protected:
~HandleNotificationButtonClickDelegate() override;
private:
ButtonClickCallback button_callback_;
DISALLOW_COPY_AND_ASSIGN(HandleNotificationButtonClickDelegate);
};
} // namespace message_center
#endif // UI_MESSAGE_CENTER_NOTIFICATION_DELEGATE_H_
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