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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 <string>
#include "base/memory/ref_counted.h"
#include "ui/message_center/message_center_export.h"
namespace content {
class RenderViewHost;
}
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() = 0;
// To be called when the desktop notification cannot be shown due to an
// error.
virtual void Error() = 0;
// 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) = 0;
// Returns true if the delegate can handle click event.
virtual bool HasClickedListener();
// To be called when a desktop notification is clicked.
virtual void Click() = 0;
// To be called when the user clicks a button in a notification. TODO(miket):
// consider providing default implementations of the pure virtuals of this
// interface, to avoid pinging so many OWNERs each time we enhance it.
virtual void ButtonClick(int button_index);
protected:
virtual ~NotificationDelegate() {}
private:
friend class base::RefCountedThreadSafe<NotificationDelegate>;
};
} // namespace message_center
#endif // UI_MESSAGE_CENTER_NOTIFICATION_DELEGATE_H_
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