diff -r 000000000000 -r 6474c204b198 layout/xul/nsSliderFrame.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/xul/nsSliderFrame.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,185 @@
+/* -*- 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 nsSliderFrame_h__
+#define nsSliderFrame_h__
+
+#include "mozilla/Attributes.h"
+#include "nsRepeatService.h"
+#include "nsBoxFrame.h"
+#include "nsIAtom.h"
+#include "nsCOMPtr.h"
+#include "nsITimer.h"
+#include "nsIDOMEventListener.h"
+
+class nsString;
+class nsITimer;
+class nsSliderFrame;
+
+nsIFrame* NS_NewSliderFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+class nsSliderMediator : public nsIDOMEventListener
+{
+public:
+
+  NS_DECL_ISUPPORTS
+
+  nsSliderFrame* mSlider;
+
+  nsSliderMediator(nsSliderFrame* aSlider) {  mSlider = aSlider; }
+  virtual ~nsSliderMediator() {}
+
+  virtual void SetSlider(nsSliderFrame* aSlider) { mSlider = aSlider; }
+
+  NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) MOZ_OVERRIDE;
+};
+
+class nsSliderFrame : public nsBoxFrame
+{
+public:
+  NS_DECL_FRAMEARENA_HELPERS
+
+  friend class nsSliderMediator;
+
+  nsSliderFrame(nsIPresShell* aShell, nsStyleContext* aContext);
+  virtual ~nsSliderFrame();
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE {
+    return MakeFrameName(NS_LITERAL_STRING("SliderFrame"), aResult);
+  }
+#endif
+
+  virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
+  virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
+  virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
+  NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
+
+  // nsIFrame overrides
+  virtual nsresult  AppendFrames(ChildListID     aListID,
+                                 nsFrameList&    aFrameList) MOZ_OVERRIDE;
+
+  virtual nsresult  InsertFrames(ChildListID     aListID,
+                                 nsIFrame*       aPrevFrame,
+                                 nsFrameList&    aFrameList) MOZ_OVERRIDE;
+
+  virtual nsresult  RemoveFrame(ChildListID     aListID,
+                                nsIFrame*       aOldFrame) MOZ_OVERRIDE;
+
+  virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
+
+  virtual void BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,
+                                           const nsRect&           aDirtyRect,
+                                           const nsDisplayListSet& aLists) MOZ_OVERRIDE;
+
+  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                const nsRect&           aDirtyRect,
+                                const nsDisplayListSet& aLists) MOZ_OVERRIDE;
+ 
+  virtual nsresult AttributeChanged(int32_t aNameSpaceID,
+                                    nsIAtom* aAttribute,
+                                    int32_t aModType) MOZ_OVERRIDE;
+
+  virtual void Init(nsIContent*      aContent,
+                    nsIFrame*        aParent,
+                    nsIFrame*        asPrevInFlow) MOZ_OVERRIDE;
+
+
+  virtual nsresult HandleEvent(nsPresContext* aPresContext,
+                               mozilla::WidgetGUIEvent* aEvent,
+                               nsEventStatus* aEventStatus) MOZ_OVERRIDE;
+
+  virtual nsresult SetInitialChildList(ChildListID     aListID,
+                                       nsFrameList&    aChildList) MOZ_OVERRIDE;
+
+  virtual nsIAtom* GetType() const MOZ_OVERRIDE;
+
+  nsresult StartDrag(nsIDOMEvent* aEvent);
+
+  static int32_t GetCurrentPosition(nsIContent* content);
+  static int32_t GetMinPosition(nsIContent* content);
+  static int32_t GetMaxPosition(nsIContent* content);
+  static int32_t GetIncrement(nsIContent* content);
+  static int32_t GetPageIncrement(nsIContent* content);
+  static int32_t GetIntegerAttribute(nsIContent* content, nsIAtom* atom, int32_t defaultValue);
+  void EnsureOrient();
+
+  NS_IMETHOD HandlePress(nsPresContext* aPresContext,
+                         mozilla::WidgetGUIEvent* aEvent,
+                         nsEventStatus* aEventStatus) MOZ_OVERRIDE;
+
+  NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
+                                 mozilla::WidgetGUIEvent* aEvent,
+                                 nsEventStatus* aEventStatus,
+                                 bool aControlHeld) MOZ_OVERRIDE
+  {
+    return NS_OK;
+  }
+
+  NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
+                        mozilla::WidgetGUIEvent* aEvent,
+                        nsEventStatus* aEventStatus) MOZ_OVERRIDE
+  {
+    return NS_OK;
+  }
+
+  NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
+                           mozilla::WidgetGUIEvent* aEvent,
+                           nsEventStatus* aEventStatus) MOZ_OVERRIDE;
+
+private:
+
+  bool GetScrollToClick();
+  nsIFrame* GetScrollbar();
+  bool ShouldScrollForEvent(mozilla::WidgetGUIEvent* aEvent);
+  bool ShouldScrollToClickForEvent(mozilla::WidgetGUIEvent* aEvent);
+  bool IsEventOverThumb(mozilla::WidgetGUIEvent* aEvent);
+
+  void PageUpDown(nscoord change);
+  void SetCurrentThumbPosition(nsIContent* aScrollbar, nscoord aNewPos, bool aIsSmooth,
+                               bool aMaySnap);
+  void SetCurrentPosition(nsIContent* aScrollbar, int32_t aNewPos, bool aIsSmooth);
+  void SetCurrentPositionInternal(nsIContent* aScrollbar, int32_t pos,
+                                  bool aIsSmooth);
+  void CurrentPositionChanged();
+
+  void DragThumb(bool aGrabMouseEvents);
+  void AddListener();
+  void RemoveListener();
+  bool isDraggingThumb();
+
+  void StartRepeat() {
+    nsRepeatService::GetInstance()->Start(Notify, this);
+  }
+  void StopRepeat() {
+    nsRepeatService::GetInstance()->Stop(Notify, this);
+  }
+  void Notify();
+  static void Notify(void* aData) {
+    (static_cast<nsSliderFrame*>(aData))->Notify();
+  }
+ 
+  nsPoint mDestinationPoint;
+  nsRefPtr<nsSliderMediator> mMediator;
+
+  float mRatio;
+
+  nscoord mDragStart;
+  nscoord mThumbStart;
+
+  int32_t mCurPos;
+
+  nscoord mChange;
+
+  // true if an attribute change has been caused by the user manipulating the
+  // slider. This allows notifications to tell how a slider's current position
+  // was changed.
+  bool mUserChanged;
+
+  static bool gMiddlePref;
+  static int32_t gSnapMultiplier;
+}; // class nsSliderFrame
+
+#endif