The Tor Browser: layout/generic/nsIScrollbarOwner.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef nsIScrollbarOwner_h___

     7 #define nsIScrollbarOwner_h___

     9 #include "nsQueryFrame.h"

    11 class nsIDOMEventTarget;

    12 class nsIFrame;

    14 /**

    15  * An interface that represents a frame which manages scrollbars.

    16  */

    17 class nsIScrollbarOwner : public nsQueryFrame {

    18 public:

    19   NS_DECL_QUERYFRAME_TARGET(nsIScrollbarOwner)

    21   /**

    22    * Obtain the frame for the horizontal or vertical scrollbar, or null

    23    * if there is no such box.

    24    */

    25   virtual nsIFrame* GetScrollbarBox(bool aVertical) = 0;

    27   /**

    28    * Show or hide scrollbars on 2 fingers touch.

    29    * Subclasses should call their ScrollbarActivity's corresponding methods.

    30    */

    31   virtual void ScrollbarActivityStarted() const = 0;

    32   virtual void ScrollbarActivityStopped() const = 0;

    33 };

    35 #endif

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