layout/generic/nsIScrollbarOwner.h

branch
TOR_BUG_9701
changeset 15
b8a032363ba2
equal deleted inserted replaced
-1:000000000000 0:bfdda7520c20
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/. */
5
6 #ifndef nsIScrollbarOwner_h___
7 #define nsIScrollbarOwner_h___
8
9 #include "nsQueryFrame.h"
10
11 class nsIDOMEventTarget;
12 class nsIFrame;
13
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)
20
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;
26
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 };
34
35 #endif

mercurial