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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) 2004-2023 Apple Inc. All rights reserved.
* Copyright (C) 2010-2015 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.
*
*/
#pragma once
#include "HTMLFormControlElement.h"
#include "HTMLOptionElement.h"
#include "TypeAhead.h"
#include <wtf/CompletionHandler.h>
namespace WebCore {
class HTMLOptionsCollection;
class HTMLSelectElement : public HTMLFormControlElement, private TypeAheadDataSource {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(HTMLSelectElement);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(HTMLSelectElement);
public:
static Ref<HTMLSelectElement> create(const QualifiedName&, Document&, HTMLFormElement*);
static Ref<HTMLSelectElement> create(Document&);
WEBCORE_EXPORT int selectedIndex() const;
WEBCORE_EXPORT void setSelectedIndex(int);
WEBCORE_EXPORT void optionSelectedByUser(int index, bool dispatchChangeEvent, bool allowMultipleSelection = false);
String validationMessage() const final;
bool valueMissing() const final;
WEBCORE_EXPORT unsigned length() const;
unsigned size() const { return m_size; }
bool multiple() const { return m_multiple; }
bool usesMenuList() const;
using OptionOrOptGroupElement = std::variant<RefPtr<HTMLOptionElement>, RefPtr<HTMLOptGroupElement>>;
using HTMLElementOrInt = std::variant<RefPtr<HTMLElement>, int>;
WEBCORE_EXPORT ExceptionOr<void> add(const OptionOrOptGroupElement&, const std::optional<HTMLElementOrInt>& before);
using Node::remove;
WEBCORE_EXPORT void remove(int);
WEBCORE_EXPORT String value() const;
WEBCORE_EXPORT void setValue(const String&);
WEBCORE_EXPORT Ref<HTMLOptionsCollection> options();
Ref<HTMLCollection> selectedOptions();
void optionElementChildrenChanged();
void setRecalcListItems();
void invalidateSelectedItems();
void updateListItemSelectedStates(AllowStyleInvalidation = AllowStyleInvalidation::Yes);
WEBCORE_EXPORT const Vector<WeakPtr<HTMLElement, WeakPtrImplWithEventTargetData>>& listItems() const;
void accessKeySetSelectedIndex(int);
WEBCORE_EXPORT void setSize(unsigned);
// Called by the bindings for the unnamed index-setter.
ExceptionOr<void> setItem(unsigned index, HTMLOptionElement*);
ExceptionOr<void> setLength(unsigned);
ExceptionOr<void> showPicker();
WEBCORE_EXPORT HTMLOptionElement* namedItem(const AtomString& name);
WEBCORE_EXPORT HTMLOptionElement* item(unsigned index);
bool isSupportedPropertyIndex(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);
bool allowsNonContiguousSelection() const { return m_allowsNonContiguousSelection; };
CompletionHandlerCallingScope optionToSelectFromChildChangeScope(const ChildChange&, HTMLOptGroupElement* parentOptGroup = nullptr);
bool canContainRangeEndPoint() const override { return false; }
bool shouldSaveAndRestoreFormControlState() const final { return true; }
bool isDevolvableWidget() const override { return true; }
protected:
HTMLSelectElement(const QualifiedName&, Document&, HTMLFormElement*);
private:
const AtomString& formControlType() const final;
int defaultTabIndex() const final;
bool isKeyboardFocusable(KeyboardEvent*) const final;
bool isMouseFocusable() const final;
void dispatchFocusEvent(RefPtr<Element>&& oldFocusedElement, const FocusOptions&) final;
void dispatchBlurEvent(RefPtr<Element>&& newFocusedElement) final;
bool canStartSelection() const final { return false; }
bool isEnumeratable() const final { return true; }
bool isLabelable() const final { return true; }
bool isInteractiveContent() const final { return true; }
FormControlState saveFormControlState() const final;
void restoreFormControlState(const FormControlState&) final;
void attributeChanged(const QualifiedName&, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason) final;
bool hasPresentationalHintsForAttribute(const QualifiedName&) const final;
bool childShouldCreateRenderer(const Node&) const final;
RenderPtr<RenderElement> createElementRenderer(RenderStyle&&, const RenderTreePosition&) final;
bool appendFormData(DOMFormData&) final;
void reset() final;
void defaultEventHandler(Event&) final;
bool willRespondToMouseClickEventsWithEditability(Editability) const final;
void dispatchChangeEventForMenuList();
void didRecalcStyle(Style::Change) final;
void recalcListItems(bool updateSelectedStates = true, AllowStyleInvalidation = AllowStyleInvalidation::Yes) const;
void typeAheadFind(KeyboardEvent&);
void saveLastSelection();
bool isOptionalFormControl() const final { return !isRequiredFormControl(); }
bool isRequiredFormControl() const final;
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 = nullptr);
void parseMultipleAttribute(const AtomString&);
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;
void childrenChanged(const ChildChange&) final;
// TypeAheadDataSource functions.
int indexOfSelectedOption() const final;
int optionCount() const final;
String optionAtIndex(int index) const final;
// m_listItems contains HTMLOptionElement, HTMLOptGroupElement, and HTMLHRElement objects.
mutable Vector<WeakPtr<HTMLElement, WeakPtrImplWithEventTargetData>> m_listItems;
Vector<bool> m_lastOnChangeSelection;
Vector<bool> m_cachedStateForActiveSelection;
TypeAhead m_typeAhead;
unsigned m_size;
int m_lastOnChangeIndex;
int m_activeSelectionAnchorIndex;
int m_activeSelectionEndIndex;
bool m_isProcessingUserDrivenChange;
bool m_multiple;
bool m_activeSelectionState;
bool m_allowsNonContiguousSelection;
mutable bool m_shouldRecalcListItems;
};
} // namespace
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