Source/core/html/forms/InputTypeView.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 * Copyright (C) 2011 Apple Inc. All rights reserved.
 * Copyright (C) 2012 Samsung Electronics. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef InputTypeView_h
#define InputTypeView_h

#include "core/page/FocusDirection.h"
#include "wtf/FastAllocBase.h"
#include "wtf/Forward.h"
#include "wtf/Noncopyable.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"

namespace WebCore {

class BeforeTextInsertedEvent;
class Element;
class Event;
class HTMLFormElement;
class HTMLInputElement;
class KeyboardEvent;
class MouseEvent;
class RenderObject;
class RenderStyle;
class TouchEvent;

struct ClickHandlingState {
    WTF_MAKE_FAST_ALLOCATED;

public:
    bool checked;
    bool indeterminate;
    RefPtr<HTMLInputElement> checkedRadioButton;
};

// An InputTypeView object represents the UI-specific part of an
// HTMLInputElement. Do not expose instances of InputTypeView and classes
// derived from it to classes other than HTMLInputElement.
class InputTypeView : public RefCounted<InputTypeView> {
    WTF_MAKE_NONCOPYABLE(InputTypeView);
    WTF_MAKE_FAST_ALLOCATED;

public:
    virtual ~InputTypeView();

    virtual bool sizeShouldIncludeDecoration(int defaultSize, int& preferredSize) const;
    virtual void handleClickEvent(MouseEvent*);
    virtual void handleMouseDownEvent(MouseEvent*);
    virtual PassOwnPtr<ClickHandlingState> willDispatchClick();
    virtual void didDispatchClick(Event*, const ClickHandlingState&);
    virtual void handleDOMActivateEvent(Event*);
    virtual void handleKeydownEvent(KeyboardEvent*);
    virtual void handleKeypressEvent(KeyboardEvent*);
    virtual void handleKeyupEvent(KeyboardEvent*);
    virtual void handleBeforeTextInsertedEvent(BeforeTextInsertedEvent*);
    virtual void handleTouchEvent(TouchEvent*);
    virtual void forwardEvent(Event*);
    virtual bool shouldSubmitImplicitly(Event*);
    virtual PassRefPtr<HTMLFormElement> formForSubmission() const;
    virtual bool hasCustomFocusLogic() const;
    virtual void handleFocusEvent(Element* oldFocusedElement, FocusDirection);
    virtual void handleBlurEvent();
    virtual void subtreeHasChanged();
    virtual bool hasTouchEventHandler() const;
    virtual void blur();
    virtual RenderObject* createRenderer(RenderStyle*) const;
    virtual PassRefPtr<RenderStyle> customStyleForRenderer(PassRefPtr<RenderStyle>);
    virtual void attach();
    virtual void minOrMaxAttributeChanged();
    virtual void stepAttributeChanged();
    virtual void altAttributeChanged();
    virtual void srcAttributeChanged();
    virtual void updateInnerTextValue();
    virtual void attributeChanged();
    virtual void multipleAttributeChanged();
    virtual void disabledAttributeChanged();
    virtual void readonlyAttributeChanged();
    virtual void requiredAttributeChanged();
    virtual void valueAttributeChanged();
    virtual void listAttributeTargetChanged();
    virtual void updateClearButtonVisibility();

protected:
    InputTypeView(HTMLInputElement* element) : m_element(element) { }
    HTMLInputElement* element() const { return m_element; }

private:
    // Raw pointer because the HTMLInputElement object owns this InputTypeView
    // object.
    HTMLInputElement* m_element;
};

} // namespace WebCore
#endif