2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
3 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
4 * (C) 1999 Antti Koivisto (koivisto@kde.org)
5 * (C) 2000 Dirk Mueller (mueller@kde.org)
6 * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
7 * Copyright (C) 2010 Google Inc. All rights reserved.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public License
20 * along with this library; see the file COPYING.LIB. If not, write to
21 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
26 #ifndef HTMLSelectElement_h
27 #define HTMLSelectElement_h
29 #include "core/html/HTMLContentElement.h"
30 #include "core/html/HTMLFormControlElementWithState.h"
31 #include "core/html/HTMLOptionsCollection.h"
32 #include "core/html/forms/TypeAhead.h"
33 #include "wtf/Vector.h"
37 class AutoscrollController;
39 class HTMLOptionElement;
42 class HTMLSelectElement FINAL : public HTMLFormControlElementWithState, public TypeAheadDataSource {
43 DEFINE_WRAPPERTYPEINFO();
45 static PassRefPtrWillBeRawPtr<HTMLSelectElement> create(Document&);
46 static PassRefPtrWillBeRawPtr<HTMLSelectElement> create(Document&, HTMLFormElement*);
48 int selectedIndex() const;
49 void setSelectedIndex(int);
50 int suggestedIndex() const;
51 void setSuggestedIndex(int);
53 void optionSelectedByUser(int index, bool dispatchChangeEvent, bool allowMultipleSelection = false);
56 virtual String validationMessage() const OVERRIDE;
57 virtual bool valueMissing() const OVERRIDE;
59 virtual void resetImpl() OVERRIDE;
61 unsigned length() const;
63 int size() const { return m_size; }
64 bool multiple() const { return m_multiple; }
66 bool usesMenuList() const;
68 void add(HTMLElement*, HTMLElement* beforeElement, ExceptionState&);
69 void addBeforeOptionAtIndex(HTMLElement*, int beforeIndex, ExceptionState&);
72 void remove(int index);
75 void setValue(const String&, bool sendEvents = false);
76 String suggestedValue() const;
77 void setSuggestedValue(const String&);
79 PassRefPtrWillBeRawPtr<HTMLOptionsCollection> options();
80 PassRefPtrWillBeRawPtr<HTMLCollection> selectedOptions();
82 void optionElementChildrenChanged();
84 void setRecalcListItems();
85 void invalidateSelectedItems();
86 void updateListItemSelectedStates();
88 const WillBeHeapVector<RawPtrWillBeMember<HTMLElement> >& listItems() const;
90 virtual void accessKeyAction(bool sendMouseEvents) OVERRIDE;
91 void accessKeySetSelectedIndex(int);
93 void setMultiple(bool);
97 void setOption(unsigned index, HTMLOptionElement*, ExceptionState&);
98 void setLength(unsigned, ExceptionState&);
100 Element* namedItem(const AtomicString& name);
101 HTMLOptionElement* item(unsigned index);
103 void scrollToSelection();
104 void scrollTo(int listIndex);
106 void listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow = true);
108 bool canSelectAll() const;
110 int listToOptionIndex(int listIndex) const;
111 void listBoxOnChange();
112 int optionToListIndex(int optionIndex) const;
113 int activeSelectionStartListIndex() const;
114 int activeSelectionEndListIndex() const;
115 void setActiveSelectionAnchorIndex(int);
116 void setActiveSelectionEndIndex(int);
117 void updateListBoxSelection(bool deselectOtherOptions);
119 // For use in the implementation of HTMLOptionElement.
120 void optionSelectionStateChanged(HTMLOptionElement*, bool optionIsSelected);
121 void optionRemoved(const HTMLOptionElement&);
122 bool anonymousIndexedSetter(unsigned, PassRefPtrWillBeRawPtr<HTMLOptionElement>, ExceptionState&);
124 void updateListOnRenderer();
126 HTMLOptionElement* spatialNavigationFocusedOption();
127 void handleMouseRelease();
129 virtual void trace(Visitor*) OVERRIDE;
132 HTMLSelectElement(Document&, HTMLFormElement*);
135 virtual const AtomicString& formControlType() const OVERRIDE;
137 virtual bool shouldShowFocusRingOnMouseFocus() const OVERRIDE;
139 virtual void dispatchFocusEvent(Element* oldFocusedElement, FocusType) OVERRIDE;
140 virtual void dispatchBlurEvent(Element* newFocusedElemnet) OVERRIDE;
142 virtual bool canStartSelection() const OVERRIDE { return false; }
144 virtual bool isEnumeratable() const OVERRIDE { return true; }
145 virtual bool isInteractiveContent() const OVERRIDE;
146 virtual bool supportsAutofocus() const OVERRIDE;
147 virtual bool supportLabels() const OVERRIDE { return true; }
149 virtual FormControlState saveFormControlState() const OVERRIDE;
150 virtual void restoreFormControlState(const FormControlState&) OVERRIDE;
152 virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
153 virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
155 virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
156 virtual bool appendFormData(FormDataList&, bool) OVERRIDE;
157 virtual void didAddUserAgentShadowRoot(ShadowRoot&) OVERRIDE;
159 virtual void defaultEventHandler(Event*) OVERRIDE;
161 void dispatchInputAndChangeEventForMenuList(bool requiresUserGesture = true);
163 void recalcListItems(bool updateSelectedStates = true) const;
165 void typeAheadFind(KeyboardEvent*);
166 void saveLastSelection();
168 virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
170 virtual bool isOptionalFormControl() const OVERRIDE { return !isRequiredFormControl(); }
171 virtual bool isRequiredFormControl() const OVERRIDE;
173 bool hasPlaceholderLabelOption() const;
175 enum SelectOptionFlag {
176 DeselectOtherOptions = 1 << 0,
177 DispatchInputAndChangeEvent = 1 << 1,
180 typedef unsigned SelectOptionFlags;
181 void selectOption(int optionIndex, SelectOptionFlags = 0);
182 void deselectItemsWithoutValidation(HTMLElement* elementToExclude = 0);
183 void parseMultipleAttribute(const AtomicString&);
184 int lastSelectedListIndex() const;
185 void updateSelectedState(int listIndex, bool multi, bool shift);
186 void menuListDefaultEventHandler(Event*);
187 void handlePopupOpenKeyboardEvent(Event*);
188 bool shouldOpenPopupForKeyDownEvent(KeyboardEvent*);
189 bool shouldOpenPopupForKeyPressEvent(KeyboardEvent*);
190 void listBoxDefaultEventHandler(Event*);
191 void setOptionsChangedOnRenderer();
192 size_t searchOptionsForValue(const String&, size_t listIndexStart, size_t listIndexEnd) const;
198 int nextValidIndex(int listIndex, SkipDirection, int skip) const;
199 int nextSelectableListIndex(int startIndex) const;
200 int previousSelectableListIndex(int startIndex) const;
201 int firstSelectableListIndex() const;
202 int lastSelectableListIndex() const;
203 int nextSelectableListIndexPageAway(int startIndex, SkipDirection) const;
204 int listIndexForEventTargetOption(const Event&);
205 int listIndexForOption(const HTMLOptionElement&);
206 AutoscrollController* autoscrollController() const;
208 virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
209 virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
210 virtual void finishParsingChildren() OVERRIDE;
212 // TypeAheadDataSource functions.
213 virtual int indexOfSelectedOption() const OVERRIDE;
214 virtual int optionCount() const OVERRIDE;
215 virtual String optionAtIndex(int index) const OVERRIDE;
217 // m_listItems contains HTMLOptionElement, HTMLOptGroupElement, and HTMLHRElement objects.
218 mutable WillBeHeapVector<RawPtrWillBeMember<HTMLElement> > m_listItems;
219 Vector<bool> m_lastOnChangeSelection;
220 Vector<bool> m_cachedStateForActiveSelection;
221 TypeAhead m_typeAhead;
223 int m_lastOnChangeIndex;
224 int m_activeSelectionAnchorIndex;
225 int m_activeSelectionEndIndex;
226 bool m_isProcessingUserDrivenChange;
228 bool m_activeSelectionState;
229 mutable bool m_shouldRecalcListItems;
230 int m_suggestedIndex;
235 #endif // HTMLSelectElement_h