diff -r 000000000000 -r 6474c204b198 layout/forms/nsFormControlFrame.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/forms/nsFormControlFrame.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,179 @@
+/* -*- 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/. */
+
+#include "nsFormControlFrame.h"
+#include "nsGkAtoms.h"
+#include "nsLayoutUtils.h"
+#include "nsIDOMHTMLInputElement.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/LookAndFeel.h"
+#include "nsDeviceContext.h"
+
+using namespace mozilla;
+
+//#define FCF_NOISY
+
+nsFormControlFrame::nsFormControlFrame(nsStyleContext* aContext) :
+  nsLeafFrame(aContext)
+{
+}
+
+nsFormControlFrame::~nsFormControlFrame()
+{
+}
+
+nsIAtom*
+nsFormControlFrame::GetType() const
+{
+  return nsGkAtoms::formControlFrame; 
+}
+
+void
+nsFormControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
+{
+  // Unregister the access key registered in reflow
+  nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
+  nsLeafFrame::DestroyFrom(aDestructRoot);
+}
+
+NS_QUERYFRAME_HEAD(nsFormControlFrame)
+  NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
+NS_QUERYFRAME_TAIL_INHERITING(nsLeafFrame)
+
+NS_IMPL_FRAMEARENA_HELPERS(nsFormControlFrame)
+
+nscoord
+nsFormControlFrame::GetIntrinsicWidth()
+{
+  // Provide a reasonable default for sites that use an "auto" height.
+  // Note that if you change this, you should change the values in forms.css
+  // as well.  This is the 13px default width minus the 2px default border.
+  return nsPresContext::CSSPixelsToAppUnits(13 - 2 * 2);
+}
+
+nscoord
+nsFormControlFrame::GetIntrinsicHeight()
+{
+  // Provide a reasonable default for sites that use an "auto" height.
+  // Note that if you change this, you should change the values in forms.css
+  // as well. This is the 13px default width minus the 2px default border.
+  return nsPresContext::CSSPixelsToAppUnits(13 - 2 * 2);
+}
+
+nscoord
+nsFormControlFrame::GetBaseline() const
+{
+  NS_ASSERTION(!NS_SUBTREE_DIRTY(this),
+               "frame must not be dirty");
+  // Treat radio buttons and checkboxes as having an intrinsic baseline
+  // at the bottom of the control (use the bottom content edge rather
+  // than the bottom margin edge).
+  return mRect.height - GetUsedBorderAndPadding().bottom;
+}
+
+nsresult
+nsFormControlFrame::Reflow(nsPresContext*          aPresContext,
+                           nsHTMLReflowMetrics&     aDesiredSize,
+                           const nsHTMLReflowState& aReflowState,
+                           nsReflowStatus&          aStatus)
+{
+  DO_GLOBAL_REFLOW_COUNT("nsFormControlFrame");
+  DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
+
+  if (mState & NS_FRAME_FIRST_REFLOW) {
+    RegUnRegAccessKey(static_cast<nsIFrame*>(this), true);
+  }
+
+  nsresult rv = nsLeafFrame::Reflow(aPresContext, aDesiredSize, aReflowState,
+                                    aStatus);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  if (nsLayoutUtils::FontSizeInflationEnabled(aPresContext)) {
+    float inflation = nsLayoutUtils::FontSizeInflationFor(this);
+    aDesiredSize.Width() *= inflation;
+    aDesiredSize.Height() *= inflation;
+    aDesiredSize.UnionOverflowAreasWithDesiredBounds();
+    FinishAndStoreOverflow(&aDesiredSize);
+  }
+  return NS_OK;
+}
+
+nsresult
+nsFormControlFrame::RegUnRegAccessKey(nsIFrame * aFrame, bool aDoReg)
+{
+  NS_ENSURE_ARG_POINTER(aFrame);
+  
+  nsPresContext* presContext = aFrame->PresContext();
+  
+  NS_ASSERTION(presContext, "aPresContext is NULL in RegUnRegAccessKey!");
+
+  nsAutoString accessKey;
+
+  nsIContent* content = aFrame->GetContent();
+  content->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accessKey);
+  if (!accessKey.IsEmpty()) {
+    EventStateManager* stateManager = presContext->EventStateManager();
+    if (aDoReg) {
+      stateManager->RegisterAccessKey(content, (uint32_t)accessKey.First());
+    } else {
+      stateManager->UnregisterAccessKey(content, (uint32_t)accessKey.First());
+    }
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+void 
+nsFormControlFrame::SetFocus(bool aOn, bool aRepaint)
+{
+}
+
+nsresult
+nsFormControlFrame::HandleEvent(nsPresContext* aPresContext, 
+                                WidgetGUIEvent* aEvent,
+                                nsEventStatus* aEventStatus)
+{
+  // Check for user-input:none style
+  const nsStyleUserInterface* uiStyle = StyleUserInterface();
+  if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE ||
+      uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
+    return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
+
+  return NS_OK;
+}
+
+void
+nsFormControlFrame::GetCurrentCheckState(bool *aState)
+{
+  nsCOMPtr<nsIDOMHTMLInputElement> inputElement = do_QueryInterface(mContent);
+  if (inputElement) {
+    inputElement->GetChecked(aState);
+  }
+}
+
+nsresult
+nsFormControlFrame::SetFormProperty(nsIAtom* aName, const nsAString& aValue)
+{
+  return NS_OK;
+}
+
+// static
+nsRect
+nsFormControlFrame::GetUsableScreenRect(nsPresContext* aPresContext)
+{
+  nsRect screen;
+
+  nsDeviceContext *context = aPresContext->DeviceContext();
+  int32_t dropdownCanOverlapOSBar =
+    LookAndFeel::GetInt(LookAndFeel::eIntID_MenusCanOverlapOSBar, 0);
+  if ( dropdownCanOverlapOSBar )
+    context->GetRect(screen);
+  else
+    context->GetClientRect(screen);
+
+  return screen;
+}