1 /* 2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). 3 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http//www.torchmobile.com/) 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 * 20 */ 21 22 #ifndef SelectElement_h 23 #define SelectElement_h 24 25 #include "Event.h" 26 #include <wtf/Forward.h> 27 #include <wtf/Vector.h> 28 29 namespace WebCore { 30 31 class Attribute; 32 class Element; 33 class Event; 34 class FormDataList; 35 class HTMLFormElement; 36 class KeyboardEvent; 37 class SelectElementData; 38 39 class SelectElement { 40 public: 41 virtual bool multiple() const = 0; 42 43 virtual int size() const = 0; 44 virtual const Vector<Element*>& listItems() const = 0; 45 46 virtual void listBoxOnChange() = 0; 47 virtual void updateListBoxSelection(bool deselectOtherOptions) = 0; 48 49 virtual void menuListOnChange() = 0; 50 51 virtual int activeSelectionStartListIndex() const = 0; 52 virtual int activeSelectionEndListIndex() const = 0; 53 54 virtual void setActiveSelectionAnchorIndex(int index) = 0; 55 virtual void setActiveSelectionEndIndex(int index) = 0; 56 57 virtual int listToOptionIndex(int listIndex) const = 0; 58 virtual int optionToListIndex(int optionIndex) const = 0; 59 60 virtual int selectedIndex() const = 0; 61 virtual void setSelectedIndex(int index, bool deselect = true) = 0; 62 virtual void setSelectedIndexByUser(int index, bool deselect = true, bool fireOnChangeNow = false, bool allowMultipleSelection = false) = 0; 63 64 virtual void listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow = true) = 0; 65 66 virtual void updateValidity() = 0; 67 68 protected: 69 virtual ~SelectElement() { } 70 71 friend class SelectElementData; 72 73 static void selectAll(SelectElementData&, Element*); 74 static void saveLastSelection(SelectElementData&, Element*); 75 static void setActiveSelectionAnchorIndex(SelectElementData&, Element*, int index); 76 static void setActiveSelectionEndIndex(SelectElementData&, int index); 77 static void updateListBoxSelection(SelectElementData&, Element*, bool deselectOtherOptions); 78 static void listBoxOnChange(SelectElementData&, Element*); 79 static void menuListOnChange(SelectElementData&, Element*); 80 static void scrollToSelection(SelectElementData&, Element*); 81 static void setRecalcListItems(SelectElementData&, Element*); 82 static void recalcListItems(SelectElementData&, const Element*, bool updateSelectedStates = true); 83 static int selectedIndex(const SelectElementData&, const Element*); 84 static void setSelectedIndex(SelectElementData&, Element*, int optionIndex, bool deselect = true, bool fireOnChangeNow = false, bool userDrivenChange = true); 85 static int optionToListIndex(const SelectElementData&, const Element*, int optionIndex); 86 static int listToOptionIndex(const SelectElementData&, const Element*, int listIndex); 87 static void dispatchFocusEvent(SelectElementData&, Element*); 88 static void dispatchBlurEvent(SelectElementData&, Element*); 89 static void deselectItems(SelectElementData&, Element*, Element* excludeElement = 0); 90 static bool saveFormControlState(const SelectElementData&, const Element*, String& state); 91 static void restoreFormControlState(SelectElementData&, Element*, const String& state); 92 static void parseMultipleAttribute(SelectElementData&, Element*, Attribute*); 93 static bool appendFormData(SelectElementData&, Element*, FormDataList&); 94 static void reset(SelectElementData&, Element*); 95 static void defaultEventHandler(SelectElementData&, Element*, Event*, HTMLFormElement*); 96 static int lastSelectedListIndex(const SelectElementData&, const Element*); 97 static void typeAheadFind(SelectElementData&, Element*, KeyboardEvent*); 98 static void insertedIntoTree(SelectElementData&, Element*); 99 static void accessKeySetSelectedIndex(SelectElementData&, Element*, int index); 100 static unsigned optionCount(const SelectElementData&, const Element*); 101 102 static void updateSelectedState(SelectElementData& data, Element* element, int listIndex, 103 bool multi, bool shift); 104 105 private: 106 static void menuListDefaultEventHandler(SelectElementData&, Element*, Event*, HTMLFormElement*); 107 static void listBoxDefaultEventHandler(SelectElementData&, Element*, Event*, HTMLFormElement*); 108 static void setOptionsChangedOnRenderer(SelectElementData&, Element*); 109 }; 110 111 // HTML/WMLSelectElement hold this struct as member variable 112 // and pass it to the static helper functions in SelectElement 113 class SelectElementData { 114 public: 115 SelectElementData(); 116 ~SelectElementData(); 117 118 bool multiple() const { return m_multiple; } 119 void setMultiple(bool value) { m_multiple = value; } 120 121 int size() const { return m_size; } 122 void setSize(int value) { m_size = value; } 123 124 bool usesMenuList() const 125 { 126 #if ENABLE(NO_LISTBOX_RENDERING) 127 return true; 128 #else 129 return !m_multiple && m_size <= 1; 130 #endif 131 } 132 133 int lastOnChangeIndex() const { return m_lastOnChangeIndex; } 134 void setLastOnChangeIndex(int value) { m_lastOnChangeIndex = value; } 135 136 bool userDrivenChange() const { return m_userDrivenChange; } 137 void setUserDrivenChange(bool value) { m_userDrivenChange = value; } 138 139 Vector<bool>& lastOnChangeSelection() { return m_lastOnChangeSelection; } 140 141 bool activeSelectionState() const { return m_activeSelectionState; } 142 void setActiveSelectionState(bool value) { m_activeSelectionState = value; } 143 144 int activeSelectionAnchorIndex() const { return m_activeSelectionAnchorIndex; } 145 void setActiveSelectionAnchorIndex(int value) { m_activeSelectionAnchorIndex = value; } 146 147 int activeSelectionEndIndex() const { return m_activeSelectionEndIndex; } 148 void setActiveSelectionEndIndex(int value) { m_activeSelectionEndIndex = value; } 149 150 Vector<bool>& cachedStateForActiveSelection() { return m_cachedStateForActiveSelection; } 151 152 bool shouldRecalcListItems() const { return m_recalcListItems; } 153 void setShouldRecalcListItems(bool value) { m_recalcListItems = value; } 154 155 Vector<Element*>& rawListItems() { return m_listItems; } 156 Vector<Element*>& listItems(const Element*); 157 const Vector<Element*>& listItems(const Element*) const; 158 159 UChar repeatingChar() const { return m_repeatingChar; } 160 void setRepeatingChar(const UChar& value) { m_repeatingChar = value; } 161 162 DOMTimeStamp lastCharTime() const { return m_lastCharTime; } 163 void setLastCharTime(const DOMTimeStamp& value) { m_lastCharTime = value; } 164 165 String& typedString() { return m_typedString; } 166 void setTypedString(const String& value) { m_typedString = value; } 167 168 private: 169 void checkListItems(const Element*) const; 170 171 bool m_multiple; 172 int m_size; 173 174 int m_lastOnChangeIndex; 175 Vector<bool> m_lastOnChangeSelection; 176 bool m_userDrivenChange; 177 178 bool m_activeSelectionState; 179 int m_activeSelectionAnchorIndex; 180 int m_activeSelectionEndIndex; 181 Vector<bool> m_cachedStateForActiveSelection; 182 183 bool m_recalcListItems; 184 Vector<Element*> m_listItems; 185 186 // Instance variables for type-ahead find 187 UChar m_repeatingChar; 188 DOMTimeStamp m_lastCharTime; 189 String m_typedString; 190 }; 191 192 SelectElement* toSelectElement(Element*); 193 194 } 195 196 #endif 197
