Menu for the OSX app launcher.

ui/base/cocoa/controls/hover_image_menu_button_cell.h

Index: ui/base/cocoa/controls/hover_image_menu_button_cell.h
diff --git a/ui/base/cocoa/controls/hover_image_menu_button_cell.h b/ui/base/cocoa/controls/hover_image_menu_button_cell.h
new file mode 100644
index 0000000000000000000000000000000000000000..32fd789e4e8be457ac7cf51371c25bf372292a72
--- /dev/null
+++ b/ui/base/cocoa/controls/hover_image_menu_button_cell.h
@@ -0,0 +1,32 @@
+// 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_BASE_COCOA_CONTROLS_HOVER_IMAGE_MENU_BUTTON_CELL_H_
+#define UI_BASE_COCOA_CONTROLS_HOVER_IMAGE_MENU_BUTTON_CELL_H_
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/memory/scoped_nsobject.h"
+
+// A custom NSPopUpButtonCell that permits a hover image, and draws only an
+// image in its frame; no border, bezel or drop-down arrow. Use setImage to set
+// the default image, setAlternateImage to set the button shown while the menu
+// is active, and setHoverImage for the mouseover hover image.
+@interface HoverImageMenuButtonCell : NSPopUpButtonCell {
+ @private
+  scoped_nsobject<NSImage> hoverImage_;
+  BOOL hovered_;
+}
+
+@property(assign, nonatomic, getter=isHovered) BOOL hovered;
+
+- (void)setHoverImage:(NSImage*)newImage;

[sail, 2013/05/31 19:07:03]

use @property to declare this?

[tapted, 2013/06/03 12:49:18]

Done.

+- (NSImage*)hoverImage;
+
+// Return the image that would be drawn based on the current state flags.
+- (NSImage*)imageToDraw;
+
+@end
+
+#endif  // UI_BASE_COCOA_CONTROLS_HOVER_IMAGE_MENU_BUTTON_CELL_H_