1/* 2 * This file is part of the select element renderer in WebCore. 3 * 4 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). 5 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24#ifndef RenderMenuList_h 25#define RenderMenuList_h 26 27#include "LayoutRect.h" 28#include "PopupMenu.h" 29#include "PopupMenuClient.h" 30#include "RenderFlexibleBox.h" 31 32#if PLATFORM(MAC) 33#define POPUP_MENU_PULLS_DOWN 0 34#else 35#define POPUP_MENU_PULLS_DOWN 1 36#endif 37 38namespace WebCore { 39 40class HTMLSelectElement; 41class RenderText; 42 43class RenderMenuList : public RenderFlexibleBox, private PopupMenuClient { 44 45public: 46 RenderMenuList(Element*); 47 virtual ~RenderMenuList(); 48 49public: 50 bool popupIsVisible() const { return m_popupIsVisible; } 51 void showPopup(); 52 void hidePopup(); 53 54 void setOptionsChanged(bool changed) { m_optionsChanged = changed; } 55 56 void didSetSelectedIndex(int listIndex); 57 58 String text() const; 59 60private: 61 HTMLSelectElement* selectElement() const; 62 63 virtual bool isMenuList() const { return true; } 64 65 virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0); 66 virtual void removeChild(RenderObject*); 67 virtual bool createsAnonymousWrapper() const { return true; } 68 69 virtual void updateFromElement(); 70 71 virtual LayoutRect controlClipRect(const LayoutPoint&) const; 72 virtual bool hasControlClip() const { return true; } 73 virtual bool canHaveGeneratedChildren() const OVERRIDE { return false; } 74 virtual bool canBeReplacedWithInlineRunIn() const OVERRIDE; 75 76 virtual const char* renderName() const { return "RenderMenuList"; } 77 78 virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE; 79 virtual void computePreferredLogicalWidths() OVERRIDE; 80 81 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 82 83 virtual bool requiresForcedStyleRecalcPropagation() const { return true; } 84 85 // PopupMenuClient methods 86 virtual void valueChanged(unsigned listIndex, bool fireOnChange = true) OVERRIDE; 87 virtual void selectionChanged(unsigned, bool) OVERRIDE { } 88 virtual void selectionCleared() OVERRIDE { } 89 virtual String itemText(unsigned listIndex) const OVERRIDE; 90 virtual String itemLabel(unsigned listIndex) const OVERRIDE; 91 virtual String itemIcon(unsigned listIndex) const OVERRIDE; 92 virtual String itemToolTip(unsigned listIndex) const OVERRIDE; 93 virtual String itemAccessibilityText(unsigned listIndex) const OVERRIDE; 94 virtual bool itemIsEnabled(unsigned listIndex) const OVERRIDE; 95 virtual PopupMenuStyle itemStyle(unsigned listIndex) const OVERRIDE; 96 virtual PopupMenuStyle menuStyle() const OVERRIDE; 97 virtual int clientInsetLeft() const OVERRIDE; 98 virtual int clientInsetRight() const OVERRIDE; 99 virtual LayoutUnit clientPaddingLeft() const OVERRIDE; 100 virtual LayoutUnit clientPaddingRight() const OVERRIDE; 101 virtual int listSize() const OVERRIDE; 102 virtual int selectedIndex() const OVERRIDE; 103 virtual void popupDidHide() OVERRIDE; 104 virtual bool itemIsSeparator(unsigned listIndex) const OVERRIDE; 105 virtual bool itemIsLabel(unsigned listIndex) const OVERRIDE; 106 virtual bool itemIsSelected(unsigned listIndex) const OVERRIDE; 107 virtual bool shouldPopOver() const OVERRIDE { return !POPUP_MENU_PULLS_DOWN; } 108 virtual bool valueShouldChangeOnHotTrack() const OVERRIDE { return true; } 109 virtual void setTextFromItem(unsigned listIndex) OVERRIDE; 110 virtual void listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow = true) OVERRIDE; 111 virtual bool multiple() const OVERRIDE; 112 virtual FontSelector* fontSelector() const OVERRIDE; 113 virtual HostWindow* hostWindow() const OVERRIDE; 114 virtual PassRefPtr<Scrollbar> createScrollbar(ScrollableArea*, ScrollbarOrientation, ScrollbarControlSize) OVERRIDE; 115 116 virtual bool hasLineIfEmpty() const { return true; } 117 118 // Flexbox defines baselines differently than regular blocks. 119 // For backwards compatibility, menulists need to do the regular block behavior. 120 virtual int baselinePosition(FontBaseline baseline, bool firstLine, LineDirectionMode direction, LinePositionMode position) const OVERRIDE 121 { 122 return RenderBlock::baselinePosition(baseline, firstLine, direction, position); 123 } 124 virtual int firstLineBoxBaseline() const OVERRIDE { return RenderBlock::firstLineBoxBaseline(); } 125 virtual int inlineBlockBaseline(LineDirectionMode direction) const OVERRIDE { return RenderBlock::inlineBlockBaseline(direction); } 126 127 void getItemBackgroundColor(unsigned listIndex, Color&, bool& itemHasCustomBackgroundColor) const; 128 129 void createInnerBlock(); 130 void adjustInnerStyle(); 131 void setText(const String&); 132 void setTextFromOption(int optionIndex); 133 void updateOptionsWidth(); 134 135 void didUpdateActiveOption(int optionIndex); 136 137 RenderText* m_buttonText; 138 RenderBlock* m_innerBlock; 139 140 bool m_optionsChanged; 141 int m_optionsWidth; 142 143 int m_lastActiveIndex; 144 145 RefPtr<RenderStyle> m_optionStyle; 146 147 RefPtr<PopupMenu> m_popup; 148 bool m_popupIsVisible; 149}; 150 151inline RenderMenuList* toRenderMenuList(RenderObject* object) 152{ 153 ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isMenuList()); 154 return static_cast<RenderMenuList*>(object); 155} 156 157// This will catch anyone doing an unnecessary cast. 158void toRenderMenuList(const RenderMenuList*); 159 160} 161 162#endif 163