Implement select listbox using shadow DOM

Source/core/html/HTMLSelectElement.h

 /*
  * 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 "core/html/HTMLContentElement.h"
 #include "core/html/HTMLFormControlElementWithState.h"
 #include "core/html/HTMLOptionsCollection.h"
 #include "core/html/forms/TypeAhead.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
+class AutoscrollController;
 class ExceptionState;
 class HTMLOptionElement;
+class MouseEvent;
 
 class HTMLSelectElement FINAL : public HTMLFormControlElementWithState, public TypeAheadDataSource {
 public:
     static PassRefPtrWillBeRawPtr<HTMLSelectElement> create(Document&);
     static PassRefPtrWillBeRawPtr<HTMLSelectElement> create(Document&, HTMLFormElement*);
 
     int selectedIndex() const;
     void setSelectedIndex(int);
     int suggestedIndex() const;
     void setSuggestedIndex(int);
@@ skipping 42 matching lines @@
 
     void setSize(int);
 
     void setOption(unsigned index, HTMLOptionElement*, ExceptionState&);
     void setLength(unsigned, ExceptionState&);
 
     Element* namedItem(const AtomicString& name);
     Element* item(unsigned index);
 
     void scrollToSelection();
+    void scrollTo(int listIndex);
 
     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);
+    void optionRemoved(const HTMLOptionElement&);
     bool anonymousIndexedSetter(unsigned, PassRefPtrWillBeRawPtr<HTMLOptionElement>, ExceptionState&);
 
     void updateListOnRenderer();
 
+    HTMLOptionElement* spatialNavigationFocusedOption();
+    void handleMouseRelease();
+
     virtual void trace(Visitor*) OVERRIDE;
 
 protected:
     HTMLSelectElement(Document&, HTMLFormElement*);
 
 private:
     virtual const AtomicString& formControlType() const OVERRIDE;
 
     virtual bool shouldShowFocusRingOnMouseFocus() const OVERRIDE;
 
     virtual void dispatchFocusEvent(Element* oldFocusedElement, FocusType) OVERRIDE;
     virtual void dispatchBlurEvent(Element* newFocusedElemnet) OVERRIDE;
 
     virtual bool canStartSelection() const OVERRIDE { return false; }
 
     virtual bool isEnumeratable() const OVERRIDE { return true; }
     virtual bool isInteractiveContent() const OVERRIDE;
     virtual bool supportsAutofocus() const OVERRIDE;
     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 RenderObject* createRenderer(RenderStyle*) OVERRIDE;
     virtual bool appendFormData(FormDataList&, bool) OVERRIDE;
+    virtual void didAddUserAgentShadowRoot(ShadowRoot&) OVERRIDE;
 
     virtual void defaultEventHandler(Event*) OVERRIDE;
 
     void dispatchInputAndChangeEventForMenuList(bool requiresUserGesture = true);
 
     void recalcListItems(bool updateSelectedStates = true) const;
 
     void typeAheadFind(KeyboardEvent*);
     void saveLastSelection();
 
@@ skipping 26 matching lines @@
     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;
+    int listIndexForEventTargetOption(const Event&);
+    int listIndexForOption(const HTMLOptionElement&);
+    AutoscrollController* autoscrollController() const;
 
     virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
     virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
     virtual void finishParsingChildren() OVERRIDE;
 
     // 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 WillBeHeapVector<RawPtrWillBeMember<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;
     int m_suggestedIndex;
 };
 
 } // namespace
 
 #endif