| /* |
| * Copyright (C) 2008, 2009 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. ``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 |
| * 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 RenderScrollbar_h |
| #define RenderScrollbar_h |
| |
| #include "core/rendering/style/RenderStyleConstants.h" |
| #include "platform/scroll/Scrollbar.h" |
| #include "wtf/HashMap.h" |
| |
| namespace blink { |
| |
| class LocalFrame; |
| class Node; |
| class RenderBox; |
| class RenderScrollbarPart; |
| class RenderStyle; |
| |
| class RenderScrollbar FINAL : public Scrollbar { |
| protected: |
| RenderScrollbar(ScrollableArea*, ScrollbarOrientation, Node*, LocalFrame*); |
| |
| public: |
| friend class Scrollbar; |
| static PassRefPtr<Scrollbar> createCustomScrollbar(ScrollableArea*, ScrollbarOrientation, Node*, LocalFrame* owningFrame = 0); |
| virtual ~RenderScrollbar(); |
| |
| RenderBox* owningRenderer() const; |
| |
| void paintPart(GraphicsContext*, ScrollbarPart, const IntRect&); |
| |
| IntRect buttonRect(ScrollbarPart); |
| IntRect trackRect(int startLength, int endLength); |
| IntRect trackPieceRectWithMargins(ScrollbarPart, const IntRect&); |
| |
| int minimumThumbLength(); |
| |
| virtual bool isOverlayScrollbar() const OVERRIDE { return false; } |
| |
| private: |
| virtual void setParent(Widget*) OVERRIDE; |
| virtual void setEnabled(bool) OVERRIDE; |
| |
| virtual void setHoveredPart(ScrollbarPart) OVERRIDE; |
| virtual void setPressedPart(ScrollbarPart) OVERRIDE; |
| |
| virtual void styleChanged() OVERRIDE; |
| |
| virtual bool isCustomScrollbar() const OVERRIDE { return true; } |
| |
| void updateScrollbarParts(bool destroy = false); |
| |
| PassRefPtr<RenderStyle> getScrollbarPseudoStyle(ScrollbarPart, PseudoId); |
| void updateScrollbarPart(ScrollbarPart, bool destroy = false); |
| |
| // This Scrollbar(Widget) may outlive the DOM which created it (during tear down), |
| // so we keep a reference to the Node which caused this custom scrollbar creation. |
| // This will not create a reference cycle as the Widget tree is owned by our containing |
| // FrameView which this Node pointer can in no way keep alive. See webkit bug 80610. |
| RefPtrWillBePersistent<Node> m_owner; |
| |
| LocalFrame* m_owningFrame; |
| WillBePersistentHeapHashMap<unsigned, RawPtrWillBeMember<RenderScrollbarPart> > m_parts; |
| }; |
| |
| DEFINE_TYPE_CASTS(RenderScrollbar, ScrollbarThemeClient, scrollbar, scrollbar->isCustomScrollbar(), scrollbar.isCustomScrollbar()); |
| |
| } // namespace blink |
| |
| #endif // RenderScrollbar_h |