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/*
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef HTMLSelectElement_h
#define HTMLSelectElement_h
#include "Event.h"
#include "HTMLFormControlElementWithState.h"
#include "HTMLOptionsCollection.h"
#include "TypeAhead.h"
#include <wtf/Vector.h>
namespace WebCore {
class HTMLOptionElement;
class HTMLSelectElement : public HTMLFormControlElementWithState, public TypeAheadDataSource {
public:
static PassRefPtr<HTMLSelectElement> create(const QualifiedName&, Document*, HTMLFormElement*);
int selectedIndex() const;
void setSelectedIndex(int);
void optionSelectedByUser(int index, bool dispatchChangeEvent, bool allowMultipleSelection = false);
// For ValidityState
virtual String validationMessage() const OVERRIDE;
virtual bool valueMissing() const OVERRIDE;
unsigned length() const;
int size() const { return m_size; }
bool multiple() const { return m_multiple; }
bool usesMenuList() const;
void add(HTMLElement*, HTMLElement* beforeElement, ExceptionCode&);
void remove(int index);
void remove(HTMLOptionElement*);
String value() const;
void setValue(const String&);
PassRefPtr<HTMLOptionsCollection> options();
PassRefPtr<HTMLCollection> selectedOptions();
void optionElementChildrenChanged();
void setRecalcListItems();
void invalidateSelectedItems();
void updateListItemSelectedStates();
const Vector<HTMLElement*>& listItems() const;
virtual void accessKeyAction(bool sendMouseEvents);
void accessKeySetSelectedIndex(int);
void setMultiple(bool);
void setSize(int);
void setOption(unsigned index, HTMLOptionElement*, ExceptionCode&);
void setLength(unsigned, ExceptionCode&);
Node* namedItem(const AtomicString& name);
Node* item(unsigned index);
void scrollToSelection();
void listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow = true);
bool canSelectAll() const;
void selectAll();
int listToOptionIndex(int listIndex) const;
void listBoxOnChange();
int optionToListIndex(int optionIndex) const;
int activeSelectionStartListIndex() const;
int activeSelectionEndListIndex() const;
void setActiveSelectionAnchorIndex(int);
void setActiveSelectionEndIndex(int);
void updateListBoxSelection(bool deselectOtherOptions);
// For use in the implementation of HTMLOptionElement.
void optionSelectionStateChanged(HTMLOptionElement*, bool optionIsSelected);
protected:
HTMLSelectElement(const QualifiedName&, Document*, HTMLFormElement*);
private:
virtual const AtomicString& formControlType() const;
virtual bool isKeyboardFocusable(KeyboardEvent*) const OVERRIDE;
virtual bool isMouseFocusable() const OVERRIDE;
virtual void dispatchFocusEvent(PassRefPtr<Element> oldFocusedElement, FocusDirection) OVERRIDE FINAL;
virtual void dispatchBlurEvent(PassRefPtr<Element> newFocusedElement) OVERRIDE FINAL;
virtual bool canStartSelection() const { return false; }
virtual bool isEnumeratable() const { return true; }
virtual bool supportLabels() const OVERRIDE { return true; }
virtual FormControlState saveFormControlState() const OVERRIDE;
virtual void restoreFormControlState(const FormControlState&) OVERRIDE;
virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
virtual bool childShouldCreateRenderer(const NodeRenderingContext&) const OVERRIDE;
virtual RenderObject* createRenderer(RenderArena*, RenderStyle *);
virtual bool appendFormData(FormDataList&, bool);
virtual void reset();
virtual void defaultEventHandler(Event*);
void dispatchChangeEventForMenuList();
void recalcListItems(bool updateSelectedStates = true) const;
void deselectItems(HTMLOptionElement* excludeElement = 0);
void typeAheadFind(KeyboardEvent*);
void saveLastSelection();
virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
virtual bool isOptionalFormControl() const { return !isRequiredFormControl(); }
virtual bool isRequiredFormControl() const;
bool hasPlaceholderLabelOption() const;
enum SelectOptionFlag {
DeselectOtherOptions = 1 << 0,
DispatchChangeEvent = 1 << 1,
UserDriven = 1 << 2,
};
typedef unsigned SelectOptionFlags;
void selectOption(int optionIndex, SelectOptionFlags = 0);
void deselectItemsWithoutValidation(HTMLElement* elementToExclude = 0);
void parseMultipleAttribute(const AtomicString&);
int lastSelectedListIndex() const;
void updateSelectedState(int listIndex, bool multi, bool shift);
void menuListDefaultEventHandler(Event*);
bool platformHandleKeydownEvent(KeyboardEvent*);
void listBoxDefaultEventHandler(Event*);
void setOptionsChangedOnRenderer();
size_t searchOptionsForValue(const String&, size_t listIndexStart, size_t listIndexEnd) const;
enum SkipDirection {
SkipBackwards = -1,
SkipForwards = 1
};
int nextValidIndex(int listIndex, SkipDirection, int skip) const;
int nextSelectableListIndex(int startIndex) const;
int previousSelectableListIndex(int startIndex) const;
int firstSelectableListIndex() const;
int lastSelectableListIndex() const;
int nextSelectableListIndexPageAway(int startIndex, SkipDirection) const;
virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
// TypeAheadDataSource functions.
virtual int indexOfSelectedOption() const OVERRIDE;
virtual int optionCount() const OVERRIDE;
virtual String optionAtIndex(int index) const OVERRIDE;
// m_listItems contains HTMLOptionElement, HTMLOptGroupElement, and HTMLHRElement objects.
mutable Vector<HTMLElement*> m_listItems;
Vector<bool> m_lastOnChangeSelection;
Vector<bool> m_cachedStateForActiveSelection;
TypeAhead m_typeAhead;
int m_size;
int m_lastOnChangeIndex;
int m_activeSelectionAnchorIndex;
int m_activeSelectionEndIndex;
bool m_isProcessingUserDrivenChange;
bool m_multiple;
bool m_activeSelectionState;
mutable bool m_shouldRecalcListItems;
};
inline HTMLSelectElement* toHTMLSelectElement(Node* node)
{
ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::selectTag));
return static_cast<HTMLSelectElement*>(node);
}
} // namespace
#endif
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