dom2_rangeimpl.cpp

将konqueror浏览器移植到ARM9 2410中

           m_startContainer->nodeType() == Node::CDATA_SECTION_NODE ||
           m_startContainer->nodeType() == Node::COMMENT_NODE) {

            if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) {
                CharacterDataImpl *c = static_cast<CharacterDataImpl*>(m_startContainer->cloneNode(true,exceptioncode));
                c->deleteData(m_endOffset,static_cast<CharacterDataImpl*>(m_startContainer)->length()-m_endOffset,exceptioncode);
                c->deleteData(0,m_startOffset,exceptioncode);
                fragment->appendChild(c,exceptioncode);
            }
            if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS)
                static_cast<CharacterDataImpl*>(m_startContainer)->deleteData(m_startOffset,m_endOffset-m_startOffset,exceptioncode);
        }
        else if (m_startContainer->nodeType() == Node::PROCESSING_INSTRUCTION_NODE) {
            // ### operate just on data ?
        }
        else {
            NodeImpl *n = m_startContainer->firstChild();
            unsigned long i;
            for(i = 0; i < m_startOffset; i++) // skip until m_startOffset
                n = n->nextSibling();
            while (n && i < m_endOffset) { // delete until m_endOffset
		NodeImpl *next = n->nextSibling();
                if (action == EXTRACT_CONTENTS)
                    fragment->appendChild(n,exceptioncode); // will remove n from it's parent
                else if (action == CLONE_CONTENTS)
                    fragment->appendChild(n->cloneNode(true,exceptioncode),exceptioncode);
                else
                    m_startContainer->removeChild(n,exceptioncode);
                n = next;
                i++;
            }
        }
        collapse(true,exceptioncode);
        return fragment;
    }

    // Complex case: Start and end containers are different.
    // There are three possiblities here:
    // 1. Start container == cmnRoot (End container must be a descendant)
    // 2. End container == cmnRoot (Start container must be a descendant)
    // 3. Neither is cmnRoot, they are both descendants
    //
    // In case 3, we grab everything after the start (up until a direct child
    // of cmnRoot) into leftContents, and everything before the end (up until
    // a direct child of cmnRoot) into rightContents. Then we process all
    // cmnRoot children between leftContents and rightContents
    //
    // In case 1 or 2, we skip either processing of leftContents or rightContents,
    // in which case the last lot of nodes either goes from the first or last
    // child of cmnRoot.
    //
    // These are deleted, cloned, or extracted (i.e. both) depending on action.

    NodeImpl *leftContents = 0;
    if (m_startContainer != cmnRoot) {
        // process the left-hand side of the range, up until the last ancestor of
        // m_startContainer before cmnRoot
        if(m_startContainer->nodeType() == Node::TEXT_NODE ||
           m_startContainer->nodeType() == Node::CDATA_SECTION_NODE ||
           m_startContainer->nodeType() == Node::COMMENT_NODE) {

            if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) {
                CharacterDataImpl *c = static_cast<CharacterDataImpl*>(m_startContainer->cloneNode(true,exceptioncode));
                c->deleteData(0,m_startOffset,exceptioncode);
                leftContents = c;
            }
            if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS)
                static_cast<CharacterDataImpl*>(m_startContainer)->deleteData(
                    m_startOffset,static_cast<CharacterDataImpl*>(m_startContainer)->length()-m_startOffset,exceptioncode);
        }
        else if (m_startContainer->nodeType() == Node::PROCESSING_INSTRUCTION_NODE) {
            // ### operate just on data ?
            // leftContents = ...
        }
        else {
            if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS)
		leftContents = m_startContainer->cloneNode(false,exceptioncode);
            NodeImpl *n = m_startContainer->firstChild();
            unsigned long i;
            for(i = 0; i < m_startOffset; i++) // skip until m_startOffset
                n = n->nextSibling();
            while (n) { // process until end
		NodeImpl *next = n->nextSibling();
                if (action == EXTRACT_CONTENTS)
                    leftContents->appendChild(n,exceptioncode); // will remove n from m_startContainer
                else if (action == CLONE_CONTENTS)
                    leftContents->appendChild(n->cloneNode(true,exceptioncode),exceptioncode);
                else
                    m_startContainer->removeChild(n,exceptioncode);
                n = next;
            }
        }

        NodeImpl *leftParent = m_startContainer->parentNode();
        NodeImpl *n = m_startContainer->nextSibling();
        for (; leftParent != cmnRoot; leftParent = leftParent->parentNode()) {
            if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) {
		NodeImpl *leftContentsParent = leftParent->cloneNode(false,exceptioncode);
		leftContentsParent->appendChild(leftContents,exceptioncode);
		leftContents = leftContentsParent;
	    }

            NodeImpl *next;
            for (; n; n = next ) {
                next = n->nextSibling();
                if (action == EXTRACT_CONTENTS)
                    leftContents->appendChild(n,exceptioncode); // will remove n from leftParent
                else if (action == CLONE_CONTENTS)
                    leftContents->appendChild(n->cloneNode(true,exceptioncode),exceptioncode);
                else
                    leftParent->removeChild(n,exceptioncode);
            }
            n = leftParent->nextSibling();
        }
    }

    NodeImpl *rightContents = 0;
    if (m_endContainer != cmnRoot) {
        // delete the right-hand side of the range, up until the last ancestor of
        // m_endContainer before cmnRoot
        if(m_endContainer->nodeType() == Node::TEXT_NODE ||
           m_endContainer->nodeType() == Node::CDATA_SECTION_NODE ||
           m_endContainer->nodeType() == Node::COMMENT_NODE) {

            if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) {
                CharacterDataImpl *c = static_cast<CharacterDataImpl*>(m_endContainer->cloneNode(true,exceptioncode));
                c->deleteData(m_endOffset,static_cast<CharacterDataImpl*>(m_endContainer)->length()-m_endOffset,exceptioncode);
                rightContents = c;
            }
            if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS)
                static_cast<CharacterDataImpl*>(m_endContainer)->deleteData(0,m_endOffset,exceptioncode);
        }
        else if (m_startContainer->nodeType() == Node::PROCESSING_INSTRUCTION_NODE) {
            // ### operate just on data ?
            // rightContents = ...
        }
        else {
	    if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS)
		rightContents = m_endContainer->cloneNode(false,exceptioncode);
            NodeImpl *n = m_endContainer->firstChild();
            unsigned long i;
            for(i = 0; i+1 < m_endOffset; i++) // skip to m_endOffset
                n = n->nextSibling();
            NodeImpl *prev;
            for (; n; n = prev ) {
                prev = n->previousSibling();
                if (action == EXTRACT_CONTENTS)
                    rightContents->insertBefore(n,rightContents->firstChild(),exceptioncode); // will remove n from it's parent
                else if (action == CLONE_CONTENTS)
                    rightContents->insertBefore(n->cloneNode(true,exceptioncode),rightContents->firstChild(),exceptioncode);
                else
                    m_endContainer->removeChild(n,exceptioncode);
            }
        }

        NodeImpl *rightParent = m_endContainer->parentNode();
        NodeImpl *n = m_endContainer->previousSibling();
        for (; rightParent != cmnRoot; rightParent = rightParent->parentNode()) {
        	if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) {
	            NodeImpl *rightContentsParent = rightParent->cloneNode(false,exceptioncode);
	            rightContentsParent->appendChild(rightContents,exceptioncode);
	            rightContents = rightContentsParent;
            }

            NodeImpl *prev;
            for (; n; n = prev ) {
                prev = n->previousSibling();
                if (action == EXTRACT_CONTENTS)
                    rightContents->insertBefore(n,rightContents->firstChild(),exceptioncode); // will remove n from it's parent
                else if (action == CLONE_CONTENTS)
                    rightContents->insertBefore(n->cloneNode(true,exceptioncode),rightContents->firstChild(),exceptioncode);
                else
                    rightParent->removeChild(n,exceptioncode);

            }
            n = rightParent->previousSibling();
        }
    }

    // delete all children of cmnRoot between the start and end container

    NodeImpl *processStart; // child of cmnRooot
    if (m_startContainer == cmnRoot) {
        unsigned long i;
        processStart = m_startContainer->firstChild();
        for (i = 0; i < m_startOffset; i++)
            processStart = processStart->nextSibling();
    }
    else {
        processStart = m_startContainer;
        while (processStart->parentNode() != cmnRoot)
            processStart = processStart->parentNode();
        processStart = processStart->nextSibling();
    }
    NodeImpl *processEnd; // child of cmnRooot
    if (m_endContainer == cmnRoot) {
        unsigned long i;
        processEnd = m_endContainer->firstChild();
        for (i = 0; i < m_endOffset; i++)
            processEnd = processEnd->nextSibling();
    }
    else {
        processEnd = m_endContainer;
        while (processEnd->parentNode() != cmnRoot)
            processEnd = processEnd->parentNode();
    }

    // Now add leftContents, stuff in between, and rightContents to the fragment
    // (or just delete the stuff in between)

    if ((action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) && leftContents)
      fragment->appendChild(leftContents,exceptioncode);

    NodeImpl *next;
    NodeImpl *n;
    if (processStart) {
        for (n = processStart; n && n != processEnd; n = next) {
            next = n->nextSibling();

            if (action == EXTRACT_CONTENTS)
                fragment->appendChild(n,exceptioncode); // will remove from cmnRoot
            else if (action == CLONE_CONTENTS)
                fragment->appendChild(n->cloneNode(true,exceptioncode),exceptioncode);
            else
                cmnRoot->removeChild(n,exceptioncode);
        }
    }

    if ((action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) && rightContents)
      fragment->appendChild(rightContents,exceptioncode);

    // collapse to the proper position - see spec section 2.6
    if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) {
	if (!partialStart && !partialEnd)
	    collapse(true,exceptioncode);
	else if (partialStart) {
	    setStartContainer(partialStart->parentNode());
	    setEndContainer(partialStart->parentNode());
	    m_startOffset = m_endOffset = partialStart->nodeIndex()+1;
	}
	else if (partialEnd) {
	    setStartContainer(partialEnd->parentNode());
	    setEndContainer(partialEnd->parentNode());
	    m_startOffset = m_endOffset = partialEnd->nodeIndex();
	}
    }
    return fragment;
}


DocumentFragmentImpl *RangeImpl::extractContents( int &exceptioncode )
{
    if (m_detached) {
        exceptioncode = DOMException::INVALID_STATE_ERR;
        return 0;
    }

    checkDeleteExtract(exceptioncode);
    if (exceptioncode)
	return 0;

    return processContents(EXTRACT_CONTENTS,exceptioncode);
}

DocumentFragmentImpl *RangeImpl::cloneContents( int &exceptioncode  )
{
    if (m_detached) {
        exceptioncode = DOMException::INVALID_STATE_ERR;
        return 0;
    }

    return processContents(CLONE_CONTENTS,exceptioncode);
}

void RangeImpl::insertNode( NodeImpl *newNode, int &exceptioncode )
{
    if (m_detached) {
        exceptioncode = DOMException::INVALID_STATE_ERR;
        return;
    }

    // NO_MODIFICATION_ALLOWED_ERR: Raised if an ancestor container of either boundary-point of
    // the Range is read-only.
    NodeImpl *n = m_startContainer;
    while (n && !n->isReadOnly())
        n = n->parentNode();
    if (n) {
        exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
        return;
    }

    n = m_endContainer;
    while (n && !n->isReadOnly())
        n = n->parentNode();
    if (n) {
        exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
        return;
    }

    // WRONG_DOCUMENT_ERR: Raised if newParent and the container of the start of the Range were
    // not created from the same document.
    if (newNode->getDocument() != m_startContainer->getDocument()) {
        exceptioncode = DOMException::WRONG_DOCUMENT_ERR;
        return;
    }


    // HIERARCHY_REQUEST_ERR: Raised if the container of the start of the Range is of a type that
    // does not allow children of the type of newNode or if newNode is an ancestor of the container.

    // an extra one here - if a text node is going to split, it must have a parent to insert into
    if (m_startContainer->nodeType() == Node::TEXT_NODE && !m_startContainer->parentNode()) {
        exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
        return;
    }

    // In the case where the container is a text node, we check against the container's parent, because
    // text nodes get split up upon insertion.
    NodeImpl *checkAgainst;
    if (m_startContainer->nodeType() == Node::TEXT_NODE)
	checkAgainst = m_startContainer->parentNode();
    else
	checkAgainst = m_startContainer;

    if (newNode->nodeType() == Node::DOCUMENT_FRAGMENT_NODE) {
	// check each child node, not the DocumentFragment itself
    	NodeImpl *c;
    	for (c = newNode->firstChild(); c; c = c->nextSibling()) {
	    if (!checkAgainst->childTypeAllowed(c->nodeType())) {
		exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
		return;
	    }
    	}
    }
    else {
	if (!checkAgainst->childTypeAllowed(newNode->nodeType())) {
	    exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
	    return;
	}
    }

    for (n = m_startContainer; n; n = n->parentNode()) {
        if (n == newNode) {
            exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
            return;
        }
    }

    // INVALID_NODE_TYPE_ERR: Raised if newNode is an Attr, Entity, Notation, or Document node.
    if( newNode->nodeType() == Node::ATTRIBUTE_NODE ||
        newNode->nodeType() == Node::ENTITY_NODE ||
        newNode->nodeType() == Node::NOTATION_NODE ||
        newNode->nodeType() == Node::DOCUMENT_NODE) {
        exceptioncode = RangeException::INVALID_NODE_TYPE_ERR + RangeException::_EXCEPTION_OFFSET;
        return;
    }

    if( m_startContainer->nodeType() == Node::TEXT_NODE ||
        m_startContainer->nodeType() == Node::CDATA_SECTION_NODE )
    {
        TextImpl *newText = static_cast<TextImpl*>(m_startContainer)->splitText(m_startOffset,exceptioncode);
        if (exceptioncode)
            return;
        m_startContainer->parentNode()->insertBefore( newNode, newText, exceptioncode );
    }
    else {
        m_startContainer->insertBefore( newNode, m_startContainer->childNode( m_startOffset ), exceptioncode );
    }
}

DOMString RangeImpl::toString( int &exceptioncode )
{
    if (m_detached) {
        exceptioncode = DOMException::INVALID_STATE_ERR;
        return DOMString();
    }

    DOMString text = "";
    NodeImpl *n = m_startContainer;
    while(n) {
        if(n->nodeType() == DOM::Node::TEXT_NODE ||
           n->nodeType() == DOM::Node::CDATA_SECTION_NODE) {

            DOMString str = static_cast<TextImpl *>(n)->data().copy();
            if (n == m_endContainer)
                str.truncate(m_endOffset);
            if (n == m_startContainer)
                str.remove(0,m_startOffset);
            text += str;
            if (n == m_endContainer)
                break;
        }
        else if (n->parentNode() == m_endContainer && !n->nextSibling()) {
            break;
        }
        //if (n == m_endContainer) break;
        NodeImpl *next = n->firstChild();
        if (!next) next = n->nextSibling();

        while( !next && n->parentNode() ) {
            n = n->parentNode();
            next = n->nextSibling();
        }
        n = next;
    }
    return text;
}

DOMString RangeImpl::toHTML(  )
{
    // ### implement me!!!!
    return DOMString();
}

void RangeImpl::detach( int &exceptioncode )
{
    if (m_detached) {
        exceptioncode = DOMException::INVALID_STATE_ERR;
        return;
    }

    if (m_startContainer)
        m_startContainer->deref();
    m_startContainer = 0;
    if (m_endContainer)
        m_endContainer->deref();
    m_endContainer = 0;
    m_detached = true;
}

bool RangeImpl::isDetached() const
{
    return m_detached;
}

void RangeImpl::checkNodeWOffset( NodeImpl *n, int offset, int &exceptioncode) const
{
    if( offset < 0 ) {
        exceptioncode = DOMException::INDEX_SIZE_ERR;
    }