html_elementimpl.cpp

khtml在gtk上的移植版本

                namedAttrMap->setID(AtomicString(attr->value().implementation()->lower()));
            else
                namedAttrMap->setID(attr->value());
        }
        setChanged();
        break;
    case ATTR_CLASS:
        // class
        setHasClass(!attr->isNull());
        if (namedAttrMap) static_cast<HTMLNamedAttrMapImpl*>(namedAttrMap)->parseClassAttribute(attr->value());
        setChanged();
        break;
    case ATTR_CONTENTEDITABLE:
        setContentEditable(attr);
        break;
    case ATTR_STYLE:
        // ### we need to remove old style info in case there was any!
        // ### the inline sheet ay contain more than 1 property!
        // stylesheet info
        setHasStyle();
        if (!m_inlineStyleDecl) createInlineStyleDecl();
        m_inlineStyleDecl->setProperty(attr->value());
        setChanged();
        break;
    case ATTR_TABINDEX:
        indexstring=getAttribute(ATTR_TABINDEX);
        if (indexstring.length())
            setTabIndex(indexstring.toInt());
        break;
// i18n attributes
    case ATTR_LANG:
        break;
    case ATTR_DIR:
        addCSSProperty(attr, CSS_PROP_DIRECTION, attr->value());
        addCSSProperty(attr, CSS_PROP_UNICODE_BIDI, CSS_VAL_EMBED);
        break;
// standard events
    case ATTR_ONCLICK:
	setHTMLEventListener(EventImpl::KHTML_CLICK_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONCONTEXTMENU:
	setHTMLEventListener(EventImpl::CONTEXTMENU_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONDBLCLICK:
	setHTMLEventListener(EventImpl::KHTML_DBLCLICK_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONMOUSEDOWN:
        setHTMLEventListener(EventImpl::MOUSEDOWN_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONMOUSEMOVE:
        setHTMLEventListener(EventImpl::MOUSEMOVE_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONMOUSEOUT:
        setHTMLEventListener(EventImpl::MOUSEOUT_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONMOUSEOVER:
        setHTMLEventListener(EventImpl::MOUSEOVER_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONMOUSEUP:
        setHTMLEventListener(EventImpl::MOUSEUP_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONFOCUS:
        setHTMLEventListener(EventImpl::DOMFOCUSIN_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONKEYDOWN:
        setHTMLEventListener(EventImpl::KEYDOWN_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
	break;
    case ATTR_ONKEYPRESS:
        setHTMLEventListener(EventImpl::KEYPRESS_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
	break;
    case ATTR_ONKEYUP:
        setHTMLEventListener(EventImpl::KEYUP_EVENT,
	    getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONSCROLL:
        setHTMLEventListener(EventImpl::SCROLL_EVENT,
            getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONBEFORECUT:
        setHTMLEventListener(EventImpl::BEFORECUT_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONCUT:
        setHTMLEventListener(EventImpl::CUT_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONBEFORECOPY:
        setHTMLEventListener(EventImpl::BEFORECOPY_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONCOPY:
        setHTMLEventListener(EventImpl::COPY_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONBEFOREPASTE:
        setHTMLEventListener(EventImpl::BEFOREPASTE_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONPASTE:
        setHTMLEventListener(EventImpl::PASTE_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;        
    case ATTR_ONDRAGENTER:
        setHTMLEventListener(EventImpl::DRAGENTER_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONDRAGOVER:
        setHTMLEventListener(EventImpl::DRAGOVER_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONDRAGLEAVE:
        setHTMLEventListener(EventImpl::DRAGLEAVE_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONDROP:
        setHTMLEventListener(EventImpl::DROP_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONDRAGSTART:
        setHTMLEventListener(EventImpl::DRAGSTART_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONDRAG:
        setHTMLEventListener(EventImpl::DRAG_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONDRAGEND:
        setHTMLEventListener(EventImpl::DRAGEND_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
    case ATTR_ONSELECTSTART:
        setHTMLEventListener(EventImpl::SELECTSTART_EVENT,
                             getDocument()->createHTMLEventListener(attr->value().string()));
        break;
        // other misc attributes
    default:
#ifdef UNSUPPORTED_ATTR
	kdDebug(6030) << "UATTR: <" << this->nodeName().string() << "> ["
		      << attr->name().string() << "]=[" << attr->value().string() << "]" << endl;
#endif
        break;
    }
}

void HTMLElementImpl::createAttributeMap() const
{
    namedAttrMap = new HTMLNamedAttrMapImpl(const_cast<HTMLElementImpl*>(this));
    namedAttrMap->ref();
}

CSSStyleDeclarationImpl* HTMLElementImpl::getInlineStyleDecl()
{
    if (!m_inlineStyleDecl)
        createInlineStyleDecl();
    return m_inlineStyleDecl;
}

CSSStyleDeclarationImpl* HTMLElementImpl::additionalAttributeStyleDecl()
{
    return 0;
}

const AtomicStringList* HTMLElementImpl::getClassList() const
{
    return namedAttrMap ? static_cast<HTMLNamedAttrMapImpl*>(namedAttrMap)->getClassList() : 0;
}

static inline bool isHexDigit( const QChar &c ) {
    return ( c >= '0' && c <= '9' ) ||
	   ( c >= 'a' && c <= 'f' ) ||
	   ( c >= 'A' && c <= 'F' );
}

static inline int toHex( const QChar &c ) {
    return ( (c >= '0' && c <= '9')
             ? (c.unicode() - '0')
             : ( ( c >= 'a' && c <= 'f' )
                 ? (c.unicode() - 'a' + 10)
                 : ( ( c >= 'A' && c <= 'F' )
                     ? (c.unicode() - 'A' + 10)
                     : -1 ) ) );
}

void HTMLElementImpl::addCSSProperty(HTMLAttributeImpl* attr, int id, const DOMString &value)
{
    if (!attr->decl()) createMappedDecl(attr);
    attr->decl()->setProperty(id, value, false);
}

void HTMLElementImpl::addCSSProperty(HTMLAttributeImpl* attr, int id, int value)
{
    if (!attr->decl()) createMappedDecl(attr);
    attr->decl()->setProperty(id, value, false);
}

void HTMLElementImpl::addCSSStringProperty(HTMLAttributeImpl* attr, int id, const DOMString &value, CSSPrimitiveValue::UnitTypes type)
{
    if (!attr->decl()) createMappedDecl(attr);
    attr->decl()->setStringProperty(id, value, type, false);
}

void HTMLElementImpl::addCSSImageProperty(HTMLAttributeImpl* attr, int id, const DOMString &URL)
{
    if (!attr->decl()) createMappedDecl(attr);
    attr->decl()->setImageProperty(id, URL, false);
}

void HTMLElementImpl::addCSSLength(HTMLAttributeImpl* attr, int id, const DOMString &value)
{
    // FIXME: This function should not spin up the CSS parser, but should instead just figure out the correct
    // length unit and make the appropriate parsed value.
    if (!attr->decl()) createMappedDecl(attr);

    // strip attribute garbage..
    DOMStringImpl* v = value.implementation();
    if ( v ) {
        unsigned int l = 0;
        
        while ( l < v->l && v->s[l].unicode() <= ' ') l++;
        
        for ( ;l < v->l; l++ ) {
            char cc = v->s[l].latin1();
            if ( cc > '9' || ( cc < '0' && cc != '*' && cc != '%' && cc != '.') )
                break;
        }
        if ( l != v->l ) {
            attr->decl()->setLengthProperty(id, DOMString( v->s, l ), false);
            return;
        }
    }
    
    attr->decl()->setLengthProperty(id, value, false);
}

/* color parsing that tries to match as close as possible IE 6. */
void HTMLElementImpl::addHTMLColor(HTMLAttributeImpl* attr, int id, const DOMString &c)
{
    // this is the only case no color gets applied in IE.
    if ( !c.length() )
        return;

    if (!attr->decl()) createMappedDecl(attr);
    
    if (attr->decl()->setProperty(id, c, false) )
        return;
    
    QString color = c.string();
    // not something that fits the specs.
    
    // we're emulating IEs color parser here. It maps transparent to black, otherwise it tries to build a rgb value
    // out of everyhting you put in. The algorithm is experimentally determined, but seems to work for all test cases I have.
    
    // the length of the color value is rounded up to the next
    // multiple of 3. each part of the rgb triple then gets one third
    // of the length.
    //
    // Each triplet is parsed byte by byte, mapping
    // each number to a hex value (0-9a-fA-F to their values
    // everything else to 0).
    //
    // The highest non zero digit in all triplets is remembered, and
    // used as a normalization point to normalize to values between 0
    // and 255.
    
    if ( color.lower() != "transparent" ) {
        if ( color[0] == '#' )
            color.remove( 0,  1 );
        int basicLength = (color.length() + 2) / 3;
        if ( basicLength > 1 ) {
            // IE ignores colors with three digits or less
            // 	    qDebug("trying to fix up color '%s'. basicLength=%d, length=%d",
            // 		   color.latin1(), basicLength, color.length() );
            int colors[3] = { 0, 0, 0 };
            int component = 0;
            int pos = 0;
            int maxDigit = basicLength-1;
            while ( component < 3 ) {
                // search forward for digits in the string
                int numDigits = 0;
                while ( pos < (int)color.length() && numDigits < basicLength ) {
                    int hex = toHex( color[pos] );
                    colors[component] = (colors[component] << 4);
                    if ( hex > 0 ) {
                        colors[component] += hex;
                        maxDigit = QMIN( maxDigit, numDigits );
                    }
                    numDigits++;
                    pos++;
                }
                while ( numDigits++ < basicLength )
                    colors[component] <<= 4;
                component++;
            }
            maxDigit = basicLength - maxDigit;
            // 	    qDebug("color is %x %x %x, maxDigit=%d",  colors[0], colors[1], colors[2], maxDigit );
            
            // normalize to 00-ff. The highest filled digit counts, minimum is 2 digits
            maxDigit -= 2;
            colors[0] >>= 4*maxDigit;
            colors[1] >>= 4*maxDigit;
            colors[2] >>= 4*maxDigit;
            // 	    qDebug("normalized color is %x %x %x",  colors[0], colors[1], colors[2] );
            // 	assert( colors[0] < 0x100 && colors[1] < 0x100 && colors[2] < 0x100 );
            
            color.sprintf("#%02x%02x%02x", colors[0], colors[1], colors[2] );
            // 	    qDebug( "trying to add fixed color string '%s'", color.latin1() );
            if ( attr->decl()->setProperty(id, DOMString(color), false) )
                return;
        }
    }
    attr->decl()->setProperty(id, CSS_VAL_BLACK, false);
}

void HTMLElementImpl::createMappedDecl(HTMLAttributeImpl* attr)
{
    CSSMappedAttributeDeclarationImpl* decl = new CSSMappedAttributeDeclarationImpl(0);
    attr->setDecl(decl);
    decl->setParent(getDocument()->elementSheet());
    decl->setNode(this);
    decl->setStrictParsing(false); // Mapped attributes are just always quirky.
}

DOMString HTMLElementImpl::innerHTML() const
{
    return toHTML();
}

DOMString HTMLElementImpl::outerHTML() const
{
    return recursive_toHTML(true);
}

DOMString HTMLElementImpl::innerText() const
{
    Node startContainer(const_cast<HTMLElementImpl *>(this));
    long startOffset = 0;
    Node endContainer(const_cast<HTMLElementImpl *>(this));

    long endOffset = 0;

    for (NodeImpl *child = firstChild(); child; child = child->nextSibling()) {
	endOffset++;
    }

    Range innerRange(startContainer, startOffset, endContainer, endOffset);

    return plainText(innerRange);
}