1// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef UI_BASE_COCOA_HOVER_BUTTON_ 6#define UI_BASE_COCOA_HOVER_BUTTON_ 7 8#import <Cocoa/Cocoa.h> 9 10#import "ui/base/cocoa/tracking_area.h" 11#import "ui/base/ui_export.h" 12 13// A button that changes when you hover over it and click it. 14UI_EXPORT 15@interface HoverButton : NSButton { 16 @protected 17 // Enumeration of the hover states that the close button can be in at any one 18 // time. The button cannot be in more than one hover state at a time. 19 enum HoverState { 20 kHoverStateNone = 0, 21 kHoverStateMouseOver = 1, 22 kHoverStateMouseDown = 2 23 }; 24 25 HoverState hoverState_; 26 27 @private 28 // Tracking area for button mouseover states. Nil if not enabled. 29 ui::ScopedCrTrackingArea trackingArea_; 30} 31 32@property(nonatomic) HoverState hoverState; 33 34// Enables or disables the tracking for the button. 35- (void)setTrackingEnabled:(BOOL)enabled; 36 37// Checks to see whether the mouse is in the button's bounds and update 38// the image in case it gets out of sync. This occurs to the close button 39// when you close a tab so the tab to the left of it takes its place, and 40// drag the button without moving the mouse before you press the button down. 41- (void)checkImageState; 42 43@end 44 45#endif // UI_BASE_COCOA_HOVER_BUTTON_ 46