html_formimpl.cpp

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

}

HTMLInputElementImpl::~HTMLInputElementImpl()
{
    if (getDocument()) getDocument()->deregisterMaintainsState(this);
}

NodeImpl::Id HTMLInputElementImpl::id() const
{
    return ID_INPUT;
}

// Called from JS. Can't merge with parseType since we
// also need to actually set ATTR_TYPE, which can't be done there.
void HTMLInputElementImpl::setType(const DOMString& t)
{
    setAttribute(ATTR_TYPE, t);
}

void HTMLInputElementImpl::parseType(const DOMString& t)
{
    typeEnum newType;

    if ( strcasecmp( t, "password" ) == 0 )
        newType = PASSWORD;
    else if ( strcasecmp( t, "checkbox" ) == 0 )
        newType = CHECKBOX;
    else if ( strcasecmp( t, "radio" ) == 0 )
        newType = RADIO;
    else if ( strcasecmp( t, "submit" ) == 0 )
        newType = SUBMIT;
    else if ( strcasecmp( t, "reset" ) == 0 )
        newType = RESET;
    else if ( strcasecmp( t, "file" ) == 0 )
        newType = FILE;
    else if ( strcasecmp( t, "hidden" ) == 0 )
        newType = HIDDEN;
    else if ( strcasecmp( t, "image" ) == 0 )
        newType = IMAGE;
    else if ( strcasecmp( t, "button" ) == 0 )
        newType = BUTTON;
    else if ( strcasecmp( t, "khtml_isindex" ) == 0 )
        newType = ISINDEX;
    else
        newType = TEXT;

    // ### IMPORTANT: Don't allow the type to be changed to FILE after the first
    // type change, otherwise a JavaScript programmer would be able to set a text
    // field's value to something like /etc/passwd and then change it to a file field.
    if (m_type != newType) {
        if (newType == FILE && m_haveType) {
            // Set the attribute back to the old value.
            // Note that this calls parseAttribute again.
            setAttribute(ATTR_TYPE, type());
        } else {
            m_type = newType;
        }
    }
    m_haveType = true;
}

DOMString HTMLInputElementImpl::type() const
{
    // needs to be lowercase according to DOM spec
    switch (m_type) {
    case TEXT: return "text";
    case PASSWORD: return "password";
    case CHECKBOX: return "checkbox";
    case RADIO: return "radio";
    case SUBMIT: return "submit";
    case RESET: return "reset";
    case FILE: return "file";
    case HIDDEN: return "hidden";
    case IMAGE: return "image";
    case BUTTON: return "button";
    default: return "";
    }
}

QString HTMLInputElementImpl::state( )
{
    switch (m_type) {
    case PASSWORD:
        return QString::fromLatin1("."); // empty string, avoid restoring
    case CHECKBOX:
    case RADIO:
        return QString::fromLatin1(m_checked ? "on" : "off");
    case TEXT:
        if (autoComplete() && value() != getAttribute(ATTR_VALUE) && getDocument()->view())
            getDocument()->view()->addFormCompletionItem(name().string(), value().string());
        /* nobreak */
    default:
        return value().string() + (m_unsubmittedFormChange ? 'M' : '.');
    }
}

void HTMLInputElementImpl::restoreState(const QString &state)
{
    switch (m_type) {
    case CHECKBOX:
    case RADIO:
        setChecked((state == QString::fromLatin1("on")));
        break;
    case FILE:
        m_value = DOMString(state.left(state.length()-1));
        setChanged();
        break;
    default:
        setValue(DOMString(state.left(state.length()-1)));
        m_unsubmittedFormChange = state.endsWith("M");
        break;
    }
}

void HTMLInputElementImpl::select(  )
{
    if(!m_render) return;

    if (m_type == TEXT || m_type == PASSWORD)
        static_cast<RenderLineEdit*>(m_render)->select();
    else if (m_type == FILE)
        static_cast<RenderFileButton*>(m_render)->select();
}

void HTMLInputElementImpl::click()
{
    QMouseEvent me(QEvent::MouseButtonRelease, QPoint(0,0),Qt::LeftButton, 0);
    dispatchMouseEvent(&me,0, 1);
    dispatchMouseEvent(&me,EventImpl::CLICK_EVENT, 1);
}

void HTMLInputElementImpl::parseAttribute(AttributeImpl *attr)
{
    switch(attr->id())
    {
    case ATTR_AUTOCOMPLETE:
        m_autocomplete = strcasecmp( attr->value(), "off" );
        break;
    case ATTR_TYPE:
        parseType(attr->value());
        break;
    case ATTR_VALUE:
        if (m_value.isNull()) // We only need to setChanged if the form is looking
            setChanged();     // at the default value right now.
        break;
    case ATTR_CHECKED:
        // WebCore has m_defaultChecked and m_useDefaultChecked code here....
        break;
    case ATTR_MAXLENGTH:
    {
        m_maxLen = -1;
        if (!attr->val()) break;
        bool ok;
        const int ml = attr->val()->toInt(&ok);
        if (ml > 0 && ml < 1024)
            m_maxLen = ml;
        else if (ok && ml <= 0)
            m_maxLen = 0;
        setChanged();
    }
    break;
    case ATTR_SIZE:
        m_size = attr->val() ? attr->val()->toInt() : 20;
        break;
    case ATTR_ALT:
    case ATTR_SRC:
        if (m_type == IMAGE)
            setChanged();
        break;
    case ATTR_USEMAP:
        // ### ignore for the moment
        break;
    case ATTR_ALIGN:
        if ( m_inited && m_type == IMAGE )
            addHTMLAlignment( attr->value() );
        break;
    case ATTR_ACCESSKEY:
        break;
    case ATTR_WIDTH:
        if ( m_type == IMAGE )
            addCSSLength(CSS_PROP_WIDTH, attr->value() );
        break;
    case ATTR_HEIGHT:
        if ( m_type == IMAGE )
            addCSSLength(CSS_PROP_HEIGHT, attr->value() );
        break;
    case ATTR_ONSELECT:
        setHTMLEventListener(EventImpl::SELECT_EVENT,
            getDocument()->createHTMLEventListener(attr->value().string(), "onselect", this));
        break;
    case ATTR_ONCHANGE:
        setHTMLEventListener(EventImpl::CHANGE_EVENT,
            getDocument()->createHTMLEventListener(attr->value().string(), "onchange", this));
        break;
    default:
        HTMLGenericFormElementImpl::parseAttribute(attr);
    }
}

void HTMLInputElementImpl::attach()
{
    assert(!attached());
    assert(!m_render);
    assert(parentNode());

    if (!m_inited) {
        // FIXME: This needs to be dynamic, doesn't it, since someone could set this
        // after attachment?
        if ((uint) m_type <= ISINDEX && !m_value.isEmpty()) {
            const QString value = m_value.string();
            // remove newline stuff..
            QString nvalue;
            unsigned int valueLength = value.length();
            for (unsigned int i = 0; i < valueLength; ++i)
                if (value[i] >= ' ')
                    nvalue += value[i];
            m_value = nvalue;
        }
        m_checked = (getAttribute(ATTR_CHECKED) != 0);
        if ( m_type == IMAGE )
            addHTMLAlignment( getAttribute( ATTR_ALIGN ) );
        m_inited = true;
    }

    switch( m_type ) {
    case PASSWORD:
        if (getDocument()->isHTMLDocument())
            static_cast<HTMLDocumentImpl*>(getDocument())->setAutoFill();
        break;
    case HIDDEN:
    case IMAGE:
        if (!getAttribute(ATTR_WIDTH).isNull())
            addCSSLength(CSS_PROP_WIDTH, getAttribute(ATTR_WIDTH));
        if (!getAttribute(ATTR_HEIGHT).isNull())
            addCSSLength(CSS_PROP_HEIGHT, getAttribute(ATTR_HEIGHT));
    default:
        break;
    };

    RenderStyle* const _style = getDocument()->styleSelector()->styleForElement(this);
    _style->ref();
    if (parentNode()->renderer() && _style->display() != NONE) {
        switch(m_type)
        {
        case TEXT:
        case PASSWORD:
        case ISINDEX:      m_render = new (getDocument()->renderArena()) RenderLineEdit(this);   break;
        case CHECKBOX:  m_render = new (getDocument()->renderArena()) RenderCheckBox(this); break;
        case RADIO:        m_render = new (getDocument()->renderArena()) RenderRadioButton(this); break;
        case SUBMIT:      m_render = new (getDocument()->renderArena()) RenderSubmitButton(this); break;
        case IMAGE:       m_render =  new (getDocument()->renderArena()) RenderImageButton(this); break;
        case RESET:      m_render = new (getDocument()->renderArena()) RenderResetButton(this);   break;
        case FILE:         m_render =  new (getDocument()->renderArena()) RenderFileButton(this);    break;
        case BUTTON:  m_render = new (getDocument()->renderArena()) RenderPushButton(this);
        case HIDDEN:   break;
        }
    }

    if (m_render)
        m_render->setStyle(_style);

    HTMLGenericFormElementImpl::attach();
    _style->deref();
}

DOMString HTMLInputElementImpl::altText() const
{
    // http://www.w3.org/TR/1998/REC-html40-19980424/appendix/notes.html#altgen
    // also heavily discussed by Hixie on bugzilla
    // note this is intentionally different to HTMLImageElementImpl::altText()
    DOMString alt = getAttribute( ATTR_ALT );
    // fall back to title attribute
    if ( alt.isNull() )
        alt = getAttribute( ATTR_TITLE );
    if ( alt.isNull() )
        alt = getAttribute( ATTR_VALUE );
    if ( alt.isEmpty() )
        alt = i18n( "Submit" );

    return alt;
}

bool HTMLInputElementImpl::encoding(const QTextCodec* codec, khtml::encodingList& encoding, bool multipart)
{
    const QString nme = name().string();

    // image generates its own name's
    if (nme.isEmpty() && m_type != IMAGE) return false;

    // IMAGE needs special handling later
    if(m_type != IMAGE) encoding += fixUpfromUnicode(codec, nme);

    switch (m_type) {
        case CHECKBOX:

            if( checked() ) {
                encoding += fixUpfromUnicode(codec, value().string());
                return true;
            }
            break;

        case RADIO:

            if( checked() ) {
                encoding += fixUpfromUnicode(codec, value().string());
                return true;
            }
            break;

        case BUTTON:
        case RESET:
            // those buttons are never successful
            return false;

        case IMAGE:

            if(m_clicked)
            {
                m_clicked = false;
                QString astr(nme.isEmpty() ? QString::fromLatin1("x") : nme + ".x");

                encoding += fixUpfromUnicode(codec, astr);
                astr.setNum(KMAX( clickX(), 0 ));
                encoding += fixUpfromUnicode(codec, astr);
                astr = nme.isEmpty() ? QString::fromLatin1("y") : nme + ".y";
                encoding += fixUpfromUnicode(codec, astr);
                astr.setNum(KMAX( clickY(), 0 ) );
                encoding += fixUpfromUnicode(codec, astr);
		astr = value().string();
		if(astr.length() > 0) {
		    encoding += fixUpfromUnicode(codec, nme);
		    encoding += fixUpfromUnicode(codec, astr);
		}

                return true;
            }
            break;

        case SUBMIT:

            if (m_activeSubmit)
            {
                QString enc_str = valueWithDefault().string();
                if(!enc_str.isEmpty())
                {
                    encoding += fixUpfromUnicode(codec, enc_str);
                    return true;
                }
            }
            break;

	case FILE: // hmm, we have the type FILE also.  bad choice here...
        {
            // don't submit if display: none or display: hidden
            if(!renderer() || renderer()->style()->visibility() != khtml::VISIBLE)
                return false;

            QString local;
            KURL fileurl;
            QString val = value().string();
            if (!val.isEmpty() &&
                QDir::isRelativePath(val) &&
                QFile::exists(KGlobalSettings::documentPath() + val)) {
                fileurl.setPath(KGlobalSettings::documentPath() + val);
            } else {
                fileurl = KURL::fromPathOrURL(val);
            }

            KIO::UDSEntry filestat;

            // can't submit file in www-url-form encoded
            QWidget* const toplevel = static_cast<RenderSubmitButton*>(m_render)->widget()->topLevelWidget();
            if (multipart) {
                QCString filearray( "" );
                if ( KIO::NetAccess::stat(fileurl, filestat, toplevel)) {
                    const KFileItem fileitem(filestat, fileurl, true, false);
                    if ( fileitem.isFile() &&
                         KIO::NetAccess::download(fileurl, local, toplevel) ) {
                        QFile file(local);
                        filearray.resize(file.size()+1);
                        if ( file.open( IO_ReadOnly ) ) {
                            const int readbytes = file.readBlock( filearray.data(), file.size());
                            if ( readbytes >= 0 )
                                filearray[readbytes] = '\0';
                            file.close();
                        }
                        KIO::NetAccess::removeTempFile( local );
                    }
                }
                encoding += filearray;
                return true;
            }
            // else fall through
        }
        case HIDDEN:
        case TEXT:
        case PASSWORD:
            // always successful
            encoding += fixUpfromUnicode(codec, value().string());
            return true;
        case ISINDEX:
            encoding += fixUpfromUnicode(codec, value().string());
            return true;
    }
    return false;
}