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 "core/rendering/RenderFlexibleBox.h" 28 #include "platform/PopupMenu.h" 29 #include "platform/PopupMenuClient.h" 30 #include "platform/geometry/LayoutRect.h" 31 32 namespace blink { 33 34 class HTMLSelectElement; 35 class RenderText; 36 37 class RenderMenuList FINAL : public RenderFlexibleBox, private PopupMenuClient { 38 39 public: 40 RenderMenuList(Element*); 41 virtual ~RenderMenuList(); 42 virtual void destroy() OVERRIDE; 43 virtual void trace(Visitor*) OVERRIDE; 44 45 bool popupIsVisible() const { return m_popupIsVisible; } 46 void showPopup(); 47 void hidePopup(); 48 PopupMenu* popup() const { return m_popup.get(); } 49 50 void setOptionsChanged(bool changed) { m_optionsChanged = changed; } 51 52 void didSetSelectedIndex(int listIndex); 53 54 String text() const; 55 56 virtual PopupMenuStyle itemStyle(unsigned listIndex) const OVERRIDE; 57 58 private: 59 HTMLSelectElement* selectElement() const; 60 61 virtual bool isMenuList() const OVERRIDE { return true; } 62 virtual bool isChildAllowed(RenderObject*, RenderStyle*) const OVERRIDE; 63 64 virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0) OVERRIDE; 65 virtual void removeChild(RenderObject*) OVERRIDE; 66 virtual bool createsAnonymousWrapper() const OVERRIDE { return true; } 67 68 virtual void updateFromElement() OVERRIDE; 69 70 virtual LayoutRect controlClipRect(const LayoutPoint&) const OVERRIDE; 71 virtual bool hasControlClip() const OVERRIDE { return true; } 72 virtual bool canHaveGeneratedChildren() const OVERRIDE { return false; } 73 74 virtual const char* renderName() const OVERRIDE { return "RenderMenuList"; } 75 76 virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE; 77 virtual void computePreferredLogicalWidths() OVERRIDE; 78 79 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE; 80 81 // PopupMenuClient methods 82 virtual void valueChanged(unsigned listIndex, bool fireOnChange = true) OVERRIDE; 83 virtual void selectionChanged(unsigned, bool) OVERRIDE { } 84 virtual void selectionCleared() OVERRIDE { } 85 virtual String itemText(unsigned listIndex) const OVERRIDE; 86 virtual String itemToolTip(unsigned listIndex) const OVERRIDE; 87 virtual String itemAccessibilityText(unsigned listIndex) const OVERRIDE; 88 virtual bool itemIsEnabled(unsigned listIndex) const OVERRIDE; 89 virtual PopupMenuStyle menuStyle() const OVERRIDE; 90 virtual LayoutUnit clientPaddingLeft() const OVERRIDE; 91 virtual LayoutUnit clientPaddingRight() const OVERRIDE; 92 virtual int listSize() const OVERRIDE; 93 virtual int selectedIndex() const OVERRIDE; 94 virtual void popupDidHide() OVERRIDE; 95 virtual bool itemIsSeparator(unsigned listIndex) const OVERRIDE; 96 virtual bool itemIsLabel(unsigned listIndex) const OVERRIDE; 97 virtual bool itemIsSelected(unsigned listIndex) const OVERRIDE; 98 virtual void setTextFromItem(unsigned listIndex) OVERRIDE; 99 virtual void listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow = true) OVERRIDE; 100 virtual bool multiple() const OVERRIDE; 101 102 virtual bool hasLineIfEmpty() const OVERRIDE { return true; } 103 104 // Flexbox defines baselines differently than regular blocks. 105 // For backwards compatibility, menulists need to do the regular block behavior. 106 virtual int baselinePosition(FontBaseline baseline, bool firstLine, LineDirectionMode direction, LinePositionMode position) const OVERRIDE 107 { 108 return RenderBlock::baselinePosition(baseline, firstLine, direction, position); 109 } 110 virtual int firstLineBoxBaseline() const OVERRIDE { return RenderBlock::firstLineBoxBaseline(); } 111 virtual int inlineBlockBaseline(LineDirectionMode direction) const OVERRIDE { return RenderBlock::inlineBlockBaseline(direction); } 112 113 void getItemBackgroundColor(unsigned listIndex, Color&, bool& itemHasCustomBackgroundColor) const; 114 115 void createInnerBlock(); 116 void adjustInnerStyle(); 117 void setText(const String&); 118 void setTextFromOption(int optionIndex); 119 void updateOptionsWidth(); 120 121 void didUpdateActiveOption(int optionIndex); 122 123 RawPtrWillBeMember<RenderText> m_buttonText; 124 RawPtrWillBeMember<RenderBlock> m_innerBlock; 125 126 bool m_optionsChanged; 127 int m_optionsWidth; 128 129 int m_lastActiveIndex; 130 131 RefPtr<RenderStyle> m_optionStyle; 132 133 RefPtrWillBeMember<PopupMenu> m_popup; 134 bool m_popupIsVisible; 135 }; 136 137 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderMenuList, isMenuList()); 138 139 } 140 141 #endif 142
