Rename ScrollElasticityController variables to Chromium style

content/renderer/input/input_scroll_elasticity_controller.h

+// Copyright 2014 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.
+
+#ifndef CONTENT_RENDERER_INPUT_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_
+#define CONTENT_RENDERER_INPUT_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_
+
 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef ScrollElasticityController_h
-#define ScrollElasticityController_h
-
-#if USE(RUBBER_BANDING)
-
-// #include "platform/PlatformExport.h"
-// #include "platform/geometry/FloatPoint.h"
-// #include "platform/geometry/FloatSize.h"
-// #include "platform/scroll/ScrollTypes.h"
-// #include "wtf/Noncopyable.h"
-
-namespace blink {
-
-class PlatformWheelEvent;
+namespace content {
 
 class ScrollElasticityControllerClient {
 protected:
     virtual ~ScrollElasticityControllerClient() { }
 
 public:
-    virtual bool allowsHorizontalStretching() = 0;
-    virtual bool allowsVerticalStretching() = 0;
+    virtual bool AllowsHorizontalStretching() = 0;
+    virtual bool AllowsVerticalStretching() = 0;
     // The amount that the view is stretched past the normal allowable bounds.
     // The "overhang" amount.
-    virtual IntSize stretchAmount() = 0;
-    virtual bool pinnedInDirection(const FloatSize&) = 0;
-    virtual bool canScrollHorizontally() = 0;
-    virtual bool canScrollVertically() = 0;
+    virtual IntSize StretchAmount() = 0;
+    virtual bool PinnedInDirection(const FloatSize&) = 0;
+    virtual bool CanScrollHorizontally() = 0;
+    virtual bool CanScrollVertically() = 0;
 
     // Return the absolute scroll position, not relative to the scroll origin.
-    virtual blink::IntPoint absoluteScrollPosition() = 0;
+    virtual blink::IntPoint AbsoluteScrollPosition() = 0;
 
-    virtual void immediateScrollBy(const FloatSize&) = 0;
-    virtual void immediateScrollByWithoutContentEdgeConstraints(const FloatSize&) = 0;
-    virtual void startSnapRubberbandTimer() = 0;
-    virtual void stopSnapRubberbandTimer() = 0;
+    virtual void ImmediateScrollBy(const FloatSize&) = 0;
+    virtual void ImmediateScrollByWithoutContentEdgeConstraints(const FloatSize&) = 0;
+    virtual void StartSnapRubberbandTimer() = 0;
+    virtual void StopSnapRubberbandTimer() = 0;
 
     // If the current scroll position is within the overhang area, this function will cause
     // the page to scroll to the nearest boundary point.
-    virtual void adjustScrollPositionToBoundsIfNecessary() = 0;
+    virtual void AdjustScrollPositionToBoundsIfNecessary() = 0;
 };
 
-class PLATFORM_EXPORT ScrollElasticityController {
-    WTF_MAKE_NONCOPYABLE(ScrollElasticityController);
+class ScrollElasticityController {
 
 public:
     explicit ScrollElasticityController(ScrollElasticityControllerClient*);
 
     // This method is responsible for both scrolling and rubber-banding.
     //
     // Events are passed by IPC from the embedder. Events on Mac are grouped
     // into "gestures". If this method returns 'true', then this object has
     // handled the event. It expects the embedder to continue to forward events
     // from the gesture.
     //
     // This method makes the assumption that there is only 1 input device being
     // used at a time. If the user simultaneously uses multiple input devices,
     // Cocoa does not correctly pass all the gestureBegin/End events. The state
     // of this class is guaranteed to become eventually consistent, once the
     // user stops using multiple input devices.
-    bool handleWheelEvent(const PlatformWheelEvent&);
-    void snapRubberBandTimerFired();
+    bool HandleWheelEvent(const PlatformWheelEvent&);
+    void SnapRubberbandTimerFired();
 
-    bool isRubberBandInProgress() const;
+    bool IsRubberbandInProgress() const;
 
 private:
-    void stopSnapRubberbandTimer();
-    void snapRubberBand();
+    void StopSnapRubberbandTimer();
+    void SnapRubberband();
 
     // This method determines whether a given event should be handled. The
     // logic for control events of gestures (PhaseBegan, PhaseEnded) is handled
     // elsewhere.
     //
     // This class handles almost all wheel events. All of the following
     // conditions must be met for this class to ignore an event:
     // + No previous events in this gesture have caused any scrolling or rubber
     // banding.
     // + The event contains a horizontal component.
     // + The client's view is pinned in the horizontal direction of the event.
     // + The wheel event disallows rubber banding in the horizontal direction
     // of the event.
     bool shouldHandleEvent(const PlatformWheelEvent&);
 
-    ScrollElasticityControllerClient* m_client;
+    ScrollElasticityControllerClient* client_;
 
     // There is an active scroll gesture event. This parameter only gets set to
     // false after the rubber band has been snapped, and before a new gesture
     // has begun. A careful audit of the code may deprecate the need for this
     // parameter.
-    bool m_inScrollGesture;
+    bool in_scroll_gesture_;
     // At least one event in the current gesture has been consumed and has
     // caused the view to scroll or rubber band. All future events in this
     // gesture will be consumed and overscrolls will cause rubberbanding.
-    bool m_hasScrolled;
-    bool m_momentumScrollInProgress;
-    bool m_ignoreMomentumScrolls;
+    bool has_scrolled_;
+    bool momentum_scroll_in_progress_;
+    bool ignore_momentum_scrolls_;
 
-    CFTimeInterval m_lastMomentumScrollTimestamp;
-    FloatSize m_overflowScrollDelta;
-    FloatSize m_stretchScrollForce;
-    FloatSize m_momentumVelocity;
+    CFTimeInterval last_momentum_scroll_timestamp_;
+    FloatSize overflow_scroll_delta_;
+    FloatSize stretch_scroll_force_;
+    FloatSize momentum_velocity_;
 
     // Rubber band state.
-    CFTimeInterval m_startTime;
-    FloatSize m_startStretch;
-    FloatPoint m_origOrigin;
-    FloatSize m_origVelocity;
+    CFTimeInterval start_time_;
+    FloatSize start_stretch_;
+    FloatPoint orig_origin_;
+    FloatSize orig_velocity_;
 
-    bool m_snapRubberbandTimerIsActive;
+    bool snap_rubberband_timer_is_active_;
 };
 
-} // namespace blink
+}  // namespace content
 
-#endif // USE(RUBBER_BANDING)
-
-#endif // ScrollElasticityController_h
+#endif  // CONTENT_RENDERER_INPUT_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_