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 "ScrollableArea.h" 36 37 namespace WebCore { 38 39 class RenderListBox : public RenderBlock, private ScrollableArea { 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 int size() const; 57 58 private: 59 virtual const char* renderName() const { return "RenderListBox"; } 60 61 virtual bool isListBox() const { return true; } 62 63 virtual void updateFromElement(); 64 65 virtual bool canHaveChildren() const { return false; } 66 67 virtual bool hasControlClip() const { return true; } 68 virtual void paintObject(PaintInfo&, int tx, int ty); 69 virtual IntRect controlClipRect(int tx, int ty) const; 70 71 virtual bool isPointInOverflowControl(HitTestResult&, int x, int y, int tx, int ty); 72 73 virtual bool scroll(ScrollDirection, ScrollGranularity, float multiplier = 1, Node** stopNode = 0); 74 virtual bool logicalScroll(ScrollLogicalDirection, ScrollGranularity, float multiplier = 1, Node** stopNode = 0); 75 76 virtual void computePreferredLogicalWidths(); 77 virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const; 78 virtual void computeLogicalHeight(); 79 80 virtual void layout(); 81 82 virtual void addFocusRingRects(Vector<IntRect>&, int tx, int ty); 83 84 virtual bool canBeProgramaticallyScrolled(bool) const { return true; } 85 virtual void autoscroll(); 86 virtual void stopAutoscroll(); 87 88 virtual bool shouldPanScroll() const { return true; } 89 virtual void panScroll(const IntPoint&); 90 91 virtual int verticalScrollbarWidth() const; 92 virtual int scrollLeft() const; 93 virtual int scrollTop() const; 94 virtual int scrollWidth() const; 95 virtual int scrollHeight() const; 96 virtual void setScrollLeft(int); 97 virtual void setScrollTop(int); 98 99 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction); 100 101 // ScrollableArea interface. 102 virtual int scrollSize(ScrollbarOrientation orientation) const; 103 virtual int scrollPosition(Scrollbar*) const; 104 virtual void setScrollOffset(const IntPoint&); 105 virtual void invalidateScrollbarRect(Scrollbar*, const IntRect&); 106 virtual bool isActive() const; 107 virtual bool isScrollCornerVisible() const { return false; } // We don't support resize on list boxes yet. If we did these would have to change. 108 virtual IntRect scrollCornerRect() const { return IntRect(); } 109 virtual void invalidateScrollCornerRect(const IntRect&) { } 110 virtual IntRect convertFromScrollbarToContainingView(const Scrollbar*, const IntRect&) const; 111 virtual IntRect convertFromContainingViewToScrollbar(const Scrollbar*, const IntRect&) const; 112 virtual IntPoint convertFromScrollbarToContainingView(const Scrollbar*, const IntPoint&) const; 113 virtual IntPoint convertFromContainingViewToScrollbar(const Scrollbar*, const IntPoint&) const; 114 virtual Scrollbar* verticalScrollbar() const { return m_vBar.get(); } 115 virtual IntSize contentsSize() const; 116 virtual int visibleHeight() const; 117 virtual int visibleWidth() const; 118 virtual IntPoint currentMousePosition() const; 119 virtual bool shouldSuspendScrollAnimations() const; 120 121 virtual void disconnectFromPage() { m_page = 0; } 122 123 // NOTE: This should only be called by the overriden setScrollOffset from ScrollableArea. 124 void scrollTo(int newOffset); 125 126 void setHasVerticalScrollbar(bool hasScrollbar); 127 PassRefPtr<Scrollbar> createScrollbar(); 128 void destroyScrollbar(); 129 130 int itemHeight() const; 131 void valueChanged(unsigned listIndex); 132 int numVisibleItems() const; 133 int numItems() const; 134 int listHeight() const; 135 void paintScrollbar(PaintInfo&, int tx, int ty); 136 void paintItemForeground(PaintInfo&, int tx, int ty, int listIndex); 137 void paintItemBackground(PaintInfo&, int tx, int ty, int listIndex); 138 void scrollToRevealSelection(); 139 140 bool m_optionsChanged; 141 bool m_scrollToRevealSelectionAfterLayout; 142 bool m_inAutoscroll; 143 int m_optionsWidth; 144 int m_indexOffset; 145 146 RefPtr<Scrollbar> m_vBar; 147 148 Page* m_page; 149 }; 150 151 inline RenderListBox* toRenderListBox(RenderObject* object) 152 { 153 ASSERT(!object || object->isListBox()); 154 return static_cast<RenderListBox*>(object); 155 } 156 157 // This will catch anyone doing an unnecessary cast. 158 void toRenderListBox(const RenderListBox*); 159 160 } // namepace WebCore 161 162 #endif // RenderListBox_h 163
