root/ui/message_center/cocoa/status_item_view.h

// Copyright (c) 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_COCOA_STATUS_ITEM_VIEW_H_
#define UI_MESSAGE_CENTER_COCOA_STATUS_ITEM_VIEW_H_

#import <AppKit/AppKit.h>

#include "base/mac/scoped_block.h"
#include "base/mac/scoped_nsobject.h"
#include "ui/message_center/message_center_export.h"

namespace message_center {

// Callback block for when the status item is clicked.
typedef void(^StatusItemClickedCallback)();

}  // namespace message_center

// This view is meant to be used with a NSStatusItem. It will fire a callback
// when it is clicked. It draws a small icon and the unread count, if greater
// than zero, to the icon's right. It can also paint the highlight background
// pattern outside of a mouse event sequence, for when an attached window is
// open.
MESSAGE_CENTER_EXPORT
@interface MCStatusItemView : NSView {
 @private
  // The status item.
  base::scoped_nsobject<NSStatusItem> statusItem_;

  // Callback issued when the status item is clicked.
  base::mac::ScopedBlock<message_center::StatusItemClickedCallback> callback_;

  // The unread count number to be drawn next to the icon.
  size_t unreadCount_;

  // Whether or not we are to display the quiet mode version of the status icon.
  BOOL quietMode_;

  // Whether or not to force the highlight pattern to be drawn.
  BOOL highlight_;

  // Whether or not the view is currently handling mouse events and should
  // draw the highlight pattern.
  BOOL inMouseEventSequence_;
}

@property(copy, nonatomic) message_center::StatusItemClickedCallback callback;
@property(nonatomic) BOOL highlight;

// Designated initializer. Creates a new NSStatusItem in the system menubar.
- (id)init;

// Sets the unread count and quiet mode status of the icon.
- (void)setUnreadCount:(size_t)unreadCount withQuietMode:(BOOL)quietMode;

// Removes the status item from the menubar. Must be called to break the
// retain cycle between self and the NSStatusItem view.
- (void)removeItem;

@end

@interface MCStatusItemView (TestingAPI)

- (size_t)unreadCount;

@end

#endif  // UI_MESSAGE_CENTER_COCOA_STATUS_ITEM_VIEW_H_