diff -r 000000000000 -r 6474c204b198 layout/forms/nsButtonFrameRenderer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/forms/nsButtonFrameRenderer.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsButtonFrameRenderer_h___
+#define nsButtonFrameRenderer_h___
+
+#include "nsAutoPtr.h"
+#include "nsMargin.h"
+
+class nsIFrame;
+class nsFrame;
+class nsDisplayList;
+class nsDisplayListBuilder;
+class nsPresContext;
+class nsRenderingContext;
+class nsRect;
+class nsStyleContext;
+
+
+#define NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX  0
+#define NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX  1
+#define NS_BUTTON_RENDERER_LAST_CONTEXT_INDEX   NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX
+
+class nsButtonFrameRenderer {
+public:
+
+  nsButtonFrameRenderer();
+  ~nsButtonFrameRenderer();
+
+  /**
+   * Create display list items for the button
+   */
+  nsresult DisplayButton(nsDisplayListBuilder* aBuilder,
+                         nsDisplayList* aBackground, nsDisplayList* aForeground);
+
+
+  void PaintOutlineAndFocusBorders(nsPresContext* aPresContext,
+                                   nsRenderingContext& aRenderingContext,
+                                   const nsRect& aDirtyRect,
+                                   const nsRect& aRect);
+
+  void PaintBorderAndBackground(nsPresContext* aPresContext,
+                                nsRenderingContext& aRenderingContext,
+                                const nsRect& aDirtyRect,
+                                const nsRect& aRect,
+                                uint32_t aBGFlags);
+
+  void SetFrame(nsFrame* aFrame, nsPresContext* aPresContext);
+ 
+  void SetDisabled(bool aDisabled, bool notify);
+
+  bool isActive();
+  bool isDisabled();
+
+  void GetButtonOuterFocusRect(const nsRect& aRect, nsRect& aResult);
+  void GetButtonRect(const nsRect& aRect, nsRect& aResult);
+  void GetButtonInnerFocusRect(const nsRect& aRect, nsRect& aResult);
+  nsMargin GetButtonOuterFocusBorderAndPadding();
+  nsMargin GetButtonBorderAndPadding();
+  nsMargin GetButtonInnerFocusMargin();
+  nsMargin GetButtonInnerFocusBorderAndPadding();
+  nsMargin GetAddedButtonBorderAndPadding();
+
+  nsStyleContext* GetStyleContext(int32_t aIndex) const;
+  void SetStyleContext(int32_t aIndex, nsStyleContext* aStyleContext);
+  void ReResolveStyles(nsPresContext* aPresContext);
+
+  nsIFrame* GetFrame();
+
+protected:
+
+private:
+
+  // cached styles for focus and outline.
+  nsRefPtr<nsStyleContext> mBorderStyle;
+  nsRefPtr<nsStyleContext> mInnerFocusStyle;
+  nsRefPtr<nsStyleContext> mOuterFocusStyle;
+
+  nsFrame* mFrame;
+};
+
+
+#endif
+