1 /* 2 * This file is part of the select element renderer in WebCore. 3 * 4 * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 16 * its contributors may be used to endorse or promote products derived 17 * from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef RenderListBox_h 32 #define RenderListBox_h 33 34 #include "RenderBlock.h" 35 #include "ScrollbarClient.h" 36 37 namespace WebCore { 38 39 class RenderListBox : public RenderBlock, private ScrollbarClient { 40 public: 41 RenderListBox(Element*); 42 virtual ~RenderListBox(); 43 44 void selectionChanged(); 45 46 void setOptionsChanged(bool changed) { m_optionsChanged = changed; } 47 48 int listIndexAtOffset(int x, int y); 49 IntRect itemBoundingBoxRect(int tx, int ty, int index); 50 51 bool scrollToRevealElementAtListIndex(int index); 52 bool listIndexIsVisible(int index); 53 54 int scrollToward(const IntPoint&); // Returns the new index or -1 if no scroll occurred 55 56 private: 57 virtual const char* renderName() const { return "RenderListBox"; } 58 59 virtual bool isListBox() const { return true; } 60 61 virtual void updateFromElement(); 62 63 virtual bool canHaveChildren() const { return false; } 64 65 virtual bool hasControlClip() const { return true; } 66 virtual void paintObject(PaintInfo&, int tx, int ty); 67 virtual IntRect controlClipRect(int tx, int ty) const; 68 69 virtual bool isPointInOverflowControl(HitTestResult&, int x, int y, int tx, int ty); 70 71 virtual bool scroll(ScrollDirection, ScrollGranularity, float multiplier = 1.0f, Node** stopNode = 0); 72 73 virtual void calcPrefWidths(); 74 virtual int baselinePosition(bool firstLine, bool isRootLineBox) const; 75 virtual void calcHeight(); 76 77 virtual void layout(); 78 79 virtual bool canBeProgramaticallyScrolled(bool) const { return true; } 80 virtual void autoscroll(); 81 virtual void stopAutoscroll(); 82 83 virtual bool shouldPanScroll() const { return true; } 84 virtual void panScroll(const IntPoint&); 85 86 virtual int verticalScrollbarWidth() const; 87 virtual int scrollLeft() const; 88 virtual int scrollTop() const; 89 virtual int scrollWidth() const; 90 virtual int scrollHeight() const; 91 virtual void setScrollLeft(int); 92 virtual void setScrollTop(int); 93 94 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction); 95 96 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 97 98 // ScrollbarClient interface. 99 virtual void valueChanged(Scrollbar*); 100 virtual void invalidateScrollbarRect(Scrollbar*, const IntRect&); 101 virtual bool isActive() const; 102 virtual bool scrollbarCornerPresent() const { return false; } // We don't support resize on list boxes yet. If we did this would have to change. 103 virtual IntRect convertFromScrollbarToContainingView(const Scrollbar*, const IntRect&) const; 104 virtual IntRect convertFromContainingViewToScrollbar(const Scrollbar*, const IntRect&) const; 105 virtual IntPoint convertFromScrollbarToContainingView(const Scrollbar*, const IntPoint&) const; 106 virtual IntPoint convertFromContainingViewToScrollbar(const Scrollbar*, const IntPoint&) const; 107 108 void setHasVerticalScrollbar(bool hasScrollbar); 109 PassRefPtr<Scrollbar> createScrollbar(); 110 void destroyScrollbar(); 111 112 int itemHeight() const; 113 void valueChanged(unsigned listIndex); 114 int size() const; 115 int numVisibleItems() const; 116 int numItems() const; 117 int listHeight() const; 118 void paintScrollbar(PaintInfo&, int tx, int ty); 119 void paintItemForeground(PaintInfo&, int tx, int ty, int listIndex); 120 void paintItemBackground(PaintInfo&, int tx, int ty, int listIndex); 121 void scrollToRevealSelection(); 122 123 bool m_optionsChanged; 124 bool m_scrollToRevealSelectionAfterLayout; 125 bool m_inAutoscroll; 126 int m_optionsWidth; 127 int m_indexOffset; 128 129 RefPtr<Scrollbar> m_vBar; 130 }; 131 132 inline RenderListBox* toRenderListBox(RenderObject* object) 133 { 134 ASSERT(!object || object->isListBox()); 135 return static_cast<RenderListBox*>(object); 136 } 137 138 // This will catch anyone doing an unnecessary cast. 139 void toRenderListBox(const RenderListBox*); 140 141 } // namepace WebCore 142 143 #endif // RenderListBox_h 144
