html_formimpl.h

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/*
 * This file is part of the DOM implementation for KDE.
 *
 * Copyright (C) 1999 Lars Knoll ([e-mail])
 *           (C) 1999 Antti Koivisto ([e-mail])
 *           (C) 2000 Dirk Mueller ([e-mail])
 * Copyright (C) 2004 Apple Computer, Inc.
 *
 * 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */
#ifndef HTML_FORMIMPL_H
#define HTML_FORMIMPL_H

#include "html/html_elementimpl.h"
#include "dom/html_element.h"
#include "html/html_miscimpl.h"

#include <qptrvector.h>
#include <qmemarray.h>

#ifdef __WINSCW__
#pragma enumsalwaysint off
#endif 

class KHTMLView;
class QTextCodec;

namespace khtml
{
    class FormData;
    class RenderFormElement;
    class RenderTextArea;
    class RenderSelect;
    class RenderLineEdit;
    class RenderRadioButton;
    class RenderFileButton;
#if APPLE_CHANGES
    class RenderSlider;
#endif
}

namespace DOM {

class DOMString;
class FormDataList;
class HTMLFormElement;
class HTMLGenericFormElementImpl;
class HTMLImageElementImpl;
class HTMLImageLoader;
class HTMLOptionElementImpl;
class HTMLOptionsCollectionImpl;

// -------------------------------------------------------------------------

class HTMLFormElementImpl : public HTMLElementImpl
{
public:
    HTMLFormElementImpl(DocumentPtr *doc);
    virtual ~HTMLFormElementImpl();

    virtual Id id() const;

    virtual void attach();
    virtual void detach();

    long length() const;

    DOMString enctype() const { return m_enctype; }
    void setEnctype( const DOMString & );

    DOMString boundary() const { return m_boundary; }
    void setBoundary( const DOMString & );

    bool autoComplete() const { return m_autocomplete; }

    virtual void parseHTMLAttribute(HTMLAttributeImpl *attr);

    void radioClicked( HTMLGenericFormElementImpl *caller );

    void registerFormElement(HTMLGenericFormElementImpl *);
    void removeFormElement(HTMLGenericFormElementImpl *);
    void makeFormElementDormant(HTMLGenericFormElementImpl *);
    void registerImgElement(HTMLImageElementImpl *);
    void removeImgElement(HTMLImageElementImpl *);

    bool prepareSubmit();
    void submit(bool activateSubmitButton);
    void reset();

    void setMalformed(bool malformed) { m_malformed = malformed; }
    virtual bool isMalformed() { return m_malformed; }
    
    virtual bool isURLAttribute(AttributeImpl *attr) const;
    
#if APPLE_CHANGES
    void submitClick();
    bool formWouldHaveSecureSubmission(const DOMString &url);
#endif
   
    static void i18nData();

    friend class HTMLFormElement;
    friend class HTMLFormCollectionImpl;

    HTMLCollectionImpl::CollectionInfo *collectionInfo;

    QPtrVector<HTMLGenericFormElementImpl> formElements;
    QPtrVector<HTMLGenericFormElementImpl> dormantFormElements;
    QPtrVector<HTMLImageElementImpl> imgElements;
    DOMString m_url;
    DOMString m_target;
    DOMString m_enctype;
    DOMString m_boundary;
    DOMString m_acceptcharset;
    bool m_post : 1;
    bool m_multipart : 1;
    bool m_autocomplete : 1;
    bool m_insubmit : 1;
    bool m_doingsubmit : 1;
    bool m_inreset : 1;
    bool m_malformed : 1;

 private:
    bool formData(khtml::FormData &) const;

    QString oldIdAttr;
    QString oldNameAttr;
};

// -------------------------------------------------------------------------

class HTMLGenericFormElementImpl : public HTMLElementImpl
{
    friend class HTMLFormElementImpl;
    friend class khtml::RenderFormElement;

public:
    HTMLGenericFormElementImpl(DocumentPtr *doc, HTMLFormElementImpl *f = 0);
    virtual ~HTMLGenericFormElementImpl();

    HTMLFormElementImpl *form() { return m_form; }

    virtual DOMString type() const = 0;

    virtual void parseHTMLAttribute(HTMLAttributeImpl *attr);
    virtual void attach();
    virtual void insertedIntoDocument();
    virtual void removedFromDocument();

    virtual void reset() {}

    void onSelect();
    void onChange();

    virtual bool disabled() const;
    void setDisabled(bool _disabled);

    virtual bool isFocusable() const;
    virtual bool isKeyboardFocusable() const;
    virtual bool isMouseFocusable() const;
    virtual bool isEnumeratable() const { return false; }

    bool readOnly() const { return m_readOnly; }
    void setReadOnly(bool _readOnly) { m_readOnly = _readOnly; }

    virtual void recalcStyle( StyleChange );
#if NOKIA_CHANGES    
    virtual bool rendererIsNeeded(khtml::RenderStyle *);
#endif
    DOMString name() const;
    void setName(const DOMString& name);

    virtual bool isGenericFormElement() const { return true; }

    /*
     * override in derived classes to get the encoded name=value pair
     * for submitting
     * return true for a successful control (see HTML4-17.13.2)
     */
    virtual bool appendFormData(FormDataList&, bool) { return false; }

    virtual void defaultEventHandler(EventImpl *evt);
    virtual bool isEditable();

    virtual QString state();
    QString findMatchingState(QStringList &states);

    virtual bool isSuccessfulSubmitButton() const { return false; }
    virtual bool isActivatedSubmit() const { return false; }
    virtual void setActivatedSubmit(bool flag) { }

protected:
    HTMLFormElementImpl *getForm() const;

    DOMStringImpl* m_name;
    HTMLFormElementImpl *m_form;
    bool m_disabled, m_readOnly;

    bool m_inited : 1;
    bool m_dormant : 1;
};

// -------------------------------------------------------------------------

class HTMLButtonElementImpl : public HTMLGenericFormElementImpl
{
public:
    HTMLButtonElementImpl(DocumentPtr *doc, HTMLFormElementImpl *f = 0);

    virtual ~HTMLButtonElementImpl();

    enum typeEnum {
        SUBMIT,
        RESET,
        BUTTON
    };

    virtual Id id() const;
    DOMString type() const;

    virtual void parseHTMLAttribute(HTMLAttributeImpl *attr);
    virtual void defaultEventHandler(EventImpl *evt);
    virtual bool appendFormData(FormDataList&, bool);

    virtual bool isSuccessfulSubmitButton() const;
    virtual bool isActivatedSubmit() const;
    virtual void setActivatedSubmit(bool flag);

    virtual void click(bool sendMouseEvents);
    virtual void accessKeyAction(bool sendToAnyElement);
    
protected:
    DOMString m_value;
    DOMString m_currValue;
    typeEnum  m_type : 2;
    bool      m_dirty : 1;
    bool      m_activeSubmit : 1;
};

// -------------------------------------------------------------------------

class HTMLFieldSetElementImpl : public HTMLGenericFormElementImpl
{
public:
    HTMLFieldSetElementImpl(DocumentPtr *doc, HTMLFormElementImpl *f = 0);

    virtual ~HTMLFieldSetElementImpl();

    virtual Id id() const;
    
    virtual bool isFocusable() const;
    
    virtual khtml::RenderObject *createRenderer(RenderArena *, khtml::RenderStyle *);

    virtual DOMString type() const;
};

// -------------------------------------------------------------------------

class HTMLInputElementImpl : public HTMLGenericFormElementImpl
{
    friend class khtml::RenderLineEdit;
    friend class khtml::RenderRadioButton;
    friend class khtml::RenderFileButton;

#if APPLE_CHANGES
    friend class HTMLSelectElementImpl;
    friend class khtml::RenderSlider;
#endif

public:
    // do not change the order!
    enum typeEnum {
        TEXT,
        PASSWORD,
        ISINDEX,
        CHECKBOX,
        RADIO,
        SUBMIT,
        RESET,
        FILE,
        HIDDEN,
        IMAGE,
        BUTTON
#if APPLE_CHANGES
        ,SEARCH,
        RANGE
#endif
    };

    HTMLInputElementImpl(DocumentPtr *doc, HTMLFormElementImpl *f = 0);
    virtual ~HTMLInputElementImpl();

    virtual Id id() const;

    virtual bool isEnumeratable() const { return inputType() != IMAGE; }

    bool autoComplete() const { return m_autocomplete; }

    bool checked() const { return m_checked; }
    void setChecked(bool);
    long maxLength() const { return m_maxLen; }
    int size() const { return m_size; }
    DOMString type() const;
    void setType(const DOMString& t);

    DOMString value() const;
    void setValue(const DOMString &);

    DOMString valueWithDefault() const;

    void setValueFromRenderer(const DOMString &);
    bool valueMatchesRenderer() const { return m_valueMatchesRenderer; }
    void setValueMatchesRenderer() { m_valueMatchesRenderer = true; }

    void blur();
    void focus();

    virtual bool maintainsState() { return m_type != PASSWORD; }
    virtual QString state();
    virtual void restoreState(QStringList &);

    void select();
    
    virtual void click(bool sendMouseEvents);
    virtual void accessKeyAction(bool sendToAnyElement);

    virtual bool mapToEntry(NodeImpl::Id attr, MappedAttributeEntry& result) const;
    virtual void parseHTMLAttribute(HTMLAttributeImpl *attr);

    virtual void attach();
    virtual bool rendererIsNeeded(khtml::RenderStyle *);
    virtual khtml::RenderObject *createRenderer(RenderArena *, khtml::RenderStyle *);
    virtual void detach();
    virtual bool appendFormData(FormDataList&, bool);

    virtual bool isSuccessfulSubmitButton() const;
    virtual bool isActivatedSubmit() const;
    virtual void setActivatedSubmit(bool flag);

    typeEnum inputType() const { return m_type; }
    virtual void reset();

    // used in case input type=image was clicked.
    int clickX() const { return xPos; }