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
setOptionsChanged(bool changed)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:
renderName()59 virtual const char* renderName() const { return "RenderListBox"; }
60
isListBox()61 virtual bool isListBox() const { return true; }
62
63 virtual void updateFromElement();
64
canHaveChildren()65 virtual bool canHaveChildren() const { return false; }
66
hasControlClip()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
canBeProgramaticallyScrolled(bool)84 virtual bool canBeProgramaticallyScrolled(bool) const { return true; }
85 virtual void autoscroll();
86 virtual void stopAutoscroll();
87
shouldPanScroll()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;
isScrollCornerVisible()107 virtual bool isScrollCornerVisible() const { return false; } // We don't support resize on list boxes yet. If we did these would have to change.
scrollCornerRect()108 virtual IntRect scrollCornerRect() const { return IntRect(); }
invalidateScrollCornerRect(const 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;
verticalScrollbar()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
disconnectFromPage()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
toRenderListBox(RenderObject * object)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