1 files changed, 47 insertions, 0 deletions
diff --git a/chrome/browser/cocoa/hover_close_button.h b/chrome/browser/cocoa/hover_close_button.h
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+++ b/chrome/browser/cocoa/hover_close_button.h
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+// Copyright (c) 2010 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.
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/scoped_nsobject.h"
+
+// The standard close button for our Mac UI which is the "x" that changes to a
+// dark circle with the "x" when you hover over it. At this time it is used by
+// the popup blocker, download bar, info bar and tabs.
+@interface HoverCloseButton : NSButton {
+ @private
+  // Enumeration of the hover states that the close button can be in at any one
+  // time. The button cannot be in more than one hover state at a time.
+  enum HoverState {
+    kHoverStateNone = 0,
+    kHoverStateMouseOver = 1,
+    kHoverStateMouseDown = 2
+  };
+
+  HoverState hoverState_;
+
+  // Tracking area for close button mouseover states.
+  scoped_nsobject<NSTrackingArea> closeTrackingArea_;
+
+  // Bezier path for drawing the 'x' within the button.
+  scoped_nsobject<NSBezierPath> xPath_;
+
+  // Bezier path for drawing the hover state circle behind the 'x'.
+  scoped_nsobject<NSBezierPath> circlePath_;
+}
+
+// Enables or disables the |NSTrackingRect|s for the button.
+- (void)setTrackingEnabled:(BOOL)enabled;
+
+// Sets up the button's tracking areas and accessibility info when instantiated
+// via initWithFrame or awakeFromNib.
+- (void)commonInit;
+
+// Checks to see whether the mouse is in the button's bounds and update
+// the image in case it gets out of sync.  This occurs when you close a
+// tab so the tab to the left of it takes its place, and drag the button
+// without moving the mouse before you press the button down.
+- (void)checkImageState;
+
+@end