1 files changed, 76 insertions, 0 deletions
diff --git a/layout/mathml/nsMathMLmactionFrame.h b/layout/mathml/nsMathMLmactionFrame.h
new file mode 100644
index 000000000..9f2a149b8
--- /dev/null
+++ b/layout/mathml/nsMathMLmactionFrame.h
@@ -0,0 +1,76 @@
+/* -*- 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 nsMathMLmactionFrame_h___
+#define nsMathMLmactionFrame_h___
+
+#include "nsCOMPtr.h"
+#include "nsMathMLSelectedFrame.h"
+#include "nsIDOMEventListener.h"
+#include "mozilla/Attributes.h"
+
+//
+// <maction> -- bind actions to a subexpression
+//
+
+class nsMathMLmactionFrame : public nsMathMLSelectedFrame {
+public:
+  NS_DECL_FRAMEARENA_HELPERS
+
+  friend nsIFrame* NS_NewMathMLmactionFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+  virtual void
+  Init(nsIContent*       aContent,
+       nsContainerFrame* aParent,
+       nsIFrame*         aPrevInFlow) override;
+
+  virtual void
+  SetInitialChildList(ChildListID     aListID,
+                      nsFrameList&    aChildList) override;
+
+  virtual nsresult
+  ChildListChanged(int32_t aModType) override;
+
+  virtual nsresult
+  AttributeChanged(int32_t  aNameSpaceID,
+                   nsIAtom* aAttribute,
+                   int32_t  aModType) override;
+
+private:
+  void MouseClick();
+  void MouseOver();
+  void MouseOut();
+
+  class MouseListener final : public nsIDOMEventListener
+  {
+  private:
+    ~MouseListener() {}
+
+  public:
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSIDOMEVENTLISTENER
+
+    explicit MouseListener(nsMathMLmactionFrame* aOwner) : mOwner(aOwner) { }
+
+    nsMathMLmactionFrame* mOwner;
+  };
+
+protected:
+  explicit nsMathMLmactionFrame(nsStyleContext* aContext) :
+    nsMathMLSelectedFrame(aContext) {}
+  virtual ~nsMathMLmactionFrame();
+  
+private:
+  int32_t         mActionType;
+  int32_t         mChildCount;
+  int32_t         mSelection;
+  RefPtr<MouseListener> mListener;
+
+  // helper to return the frame for the attribute selection="number"
+  nsIFrame* 
+  GetSelectedFrame() override;
+};
+
+#endif /* nsMathMLmactionFrame_h___ */