dom_docimpl.cpp

将konqueror浏览器移植到ARM9 2410中

/**
 * This file is part of the DOM implementation for KDE.
 *
 * Copyright (C) 1999 Lars Knoll ([e-mail])
 *           (C) 1999 Antti Koivisto ([e-mail])
 *
 * 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.
 *
 * $Id: dom_docimpl.cpp,v 1.102.2.4 2003/06/20 15:19:10 pchitescu Exp $
 */

#include "dom_docimpl.h"

#include "dom_node.h"
#include "dom_elementimpl.h"
#include "dom_textimpl.h"
#include "dom_exception.h"
#include "dom_xmlimpl.h"
#include "dom2_rangeimpl.h"
#include "dom2_traversalimpl.h"
#include "dom2_viewsimpl.h"
#include "dom2_eventsimpl.h"

#include "css/cssstyleselector.h"
#include "css/css_stylesheetimpl.h"
#include "misc/helper.h"
#include "css/csshelper.h"

#include <qstring.h>
#include <qstack.h>
#include <qlist.h>
#include <qpaintdevicemetrics.h>
#include <qfontdatabase.h>
#include "misc/htmlhashes.h"
#include "misc/loader.h"
#include <kdebug.h>

#include "htmltokenizer.h"
#include "xml_tokenizer.h"

#include "rendering/render_object.h"
#include "rendering/render_root.h"
#include "rendering/render_style.h"

#include "khtmlview.h"
#include "khtml_part.h"

#include <kglobal.h>
#include <kcharsets.h>
#include <kglobalsettings.h>
#include "khtml_settings.h"

#include "html_baseimpl.h"
#include "html_blockimpl.h"
#include "html_documentimpl.h"
#include "html_elementimpl.h"
#include "html_formimpl.h"
#include "html_headimpl.h"
#include "html_imageimpl.h"
#include "html_inlineimpl.h"
#include "html_listimpl.h"
#include "html_miscimpl.h"
#include "html_tableimpl.h"
#include "html_objectimpl.h"

using namespace DOM;
using namespace khtml;

//template class QStack<DOM::NodeImpl>; // needed ?


DOMImplementationImpl::DOMImplementationImpl()
{
}

DOMImplementationImpl::~DOMImplementationImpl()
{
}

bool DOMImplementationImpl::hasFeature ( const DOMString &feature, const DOMString &version )
{
    QString lower = feature.string().lower();
    if ((lower == "html" || lower == "xml") &&
        (version == "1.0" || version == "" || version.isNull()))
        return true;
    else
        return false;
}

CSSStyleSheetImpl *DOMImplementationImpl::createCSSStyleSheet(DOMStringImpl */*title*/, DOMStringImpl */*media*/)
{
    return 0; // ###
}

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

// KHTMLView might be 0
DocumentImpl::DocumentImpl(KHTMLView *v)
    : NodeBaseImpl( new DocumentPtr() )
{
    document->doc = this;
    m_styleSelector = 0;
    m_paintDeviceMetrics = 0;

    m_view = v;

    if ( v ) {
        m_docLoader = new DocLoader(v->part());
        setPaintDevice( m_view );
    }
    else
        m_docLoader = new DocLoader( 0 );

    visuallyOrdered = false;
    m_loadingSheet = false;
    m_sheet = 0;
    m_elemSheet = 0;
    m_tokenizer = 0;
    m_doctype = new DocumentTypeImpl( docPtr() );
    m_doctype->ref();
    m_implementation = new DOMImplementationImpl();
    m_implementation->ref();
    pMode = Strict;
    m_textColor = "#000000";
    m_elementNames = 0;
    m_elementNameAlloc = 0;
    m_elementNameCount = 0;
    m_focusNode = 0;
    m_defaultView = new AbstractViewImpl(this);
    m_defaultView->ref();
    m_listenerTypes = 0;
    m_styleSheets = new StyleSheetListImpl;
    m_styleSheets->ref();
}

DocumentImpl::~DocumentImpl()
{
    document->doc = 0;
    delete m_sheet;
    delete m_styleSelector;
    delete m_docLoader;
    if (m_elemSheet )  m_elemSheet->deref();
    delete m_tokenizer;
    m_doctype->deref();
    m_implementation->deref();
    delete m_paintDeviceMetrics;

    if (m_elementNames) {
        unsigned short id;
        for (id = 0; id < m_elementNameCount; id++) {
            m_elementNames[id]->deref();
        }
        delete [] m_elementNames;
    }
    m_defaultView->deref();
    m_styleSheets->deref();
}

const DOMString DocumentImpl::nodeName() const
{
    return "#document";
}

unsigned short DocumentImpl::nodeType() const
{
    return Node::DOCUMENT_NODE;
}

ElementImpl *DocumentImpl::documentElement() const
{
    NodeImpl *n = firstChild();
    while (n && n->nodeType() != Node::ELEMENT_NODE)
      n = n->nextSibling();
    return static_cast<ElementImpl*>(n);
}

ElementImpl *DocumentImpl::createElement( const DOMString &name )
{
    return new XMLElementImpl( document, name.implementation() );
}

ElementImpl *DocumentImpl::createElementNS ( const DOMString &_namespaceURI, const DOMString &_qualifiedName )
{
    ElementImpl *e = 0;
    // ### somehow set the namespace for html elements to http://www.w3.org/1999/xhtml ?
    if (_namespaceURI == "http://www.w3.org/1999/xhtml") {
        QString qName = _qualifiedName.string();
        int colonPos = qName.find(':',0);
        e = createHTMLElement(colonPos ? qName.mid(colonPos+1) : qName);
    }
    if (!e)
        e = new XMLElementImpl( document, _qualifiedName.implementation(), _namespaceURI.implementation() );
    return e;
}

ElementImpl *DocumentImpl::createHTMLElement( const DOMString &name )
{
    uint id = khtml::getTagID( name.string().lower().latin1(), name.string().length() );

    ElementImpl *n = 0;
    switch(id)
    {
    case ID_HTML:
        n = new HTMLHtmlElementImpl(docPtr());
        break;
    case ID_HEAD:
        n = new HTMLHeadElementImpl(docPtr());
        break;
    case ID_BODY:
        n = new HTMLBodyElementImpl(docPtr());
        break;

// head elements
    case ID_BASE:
        n = new HTMLBaseElementImpl(docPtr());
        break;
    case ID_LINK:
        n = new HTMLLinkElementImpl(docPtr());
        break;
    case ID_META:
        n = new HTMLMetaElementImpl(docPtr());
        break;
    case ID_STYLE:
        n = new HTMLStyleElementImpl(docPtr());
        break;
    case ID_TITLE:
        n = new HTMLTitleElementImpl(docPtr());
        break;

// frames
    case ID_FRAME:
        n = new HTMLFrameElementImpl(docPtr());
        break;
    case ID_FRAMESET:
        n = new HTMLFrameSetElementImpl(docPtr());
        break;
    case ID_IFRAME:
        n = new HTMLIFrameElementImpl(docPtr());
        break;

// form elements
// ### FIXME: we need a way to set form dependency after we have made the form elements
    case ID_FORM:
            n = new HTMLFormElementImpl(docPtr());
        break;
    case ID_BUTTON:
            n = new HTMLButtonElementImpl(docPtr());
        break;
    case ID_FIELDSET:
            n = new HTMLFieldSetElementImpl(docPtr());
        break;
    case ID_INPUT:
            n = new HTMLInputElementImpl(docPtr());
        break;
    case ID_ISINDEX:
            n = new HTMLIsIndexElementImpl(docPtr());
        break;
    case ID_LABEL:
            n = new HTMLLabelElementImpl(docPtr());
        break;
    case ID_LEGEND:
            n = new HTMLLegendElementImpl(docPtr());
        break;
    case ID_OPTGROUP:
            n = new HTMLOptGroupElementImpl(docPtr());
        break;
    case ID_OPTION:
            n = new HTMLOptionElementImpl(docPtr());
        break;
    case ID_SELECT:
            n = new HTMLSelectElementImpl(docPtr());
        break;
    case ID_TEXTAREA:
            n = new HTMLTextAreaElementImpl(docPtr());
        break;

// lists
    case ID_DL:
        n = new HTMLDListElementImpl(docPtr());
        break;
    case ID_DD:
        n = new HTMLGenericElementImpl(docPtr(), id);
        break;
    case ID_DT:
        n = new HTMLGenericElementImpl(docPtr(), id);
        break;
    case ID_UL:
        n = new HTMLUListElementImpl(docPtr());
        break;
    case ID_OL:
        n = new HTMLOListElementImpl(docPtr());
        break;
    case ID_DIR:
        n = new HTMLDirectoryElementImpl(docPtr());
        break;
    case ID_MENU:
        n = new HTMLMenuElementImpl(docPtr());
        break;
    case ID_LI:
        n = new HTMLLIElementImpl(docPtr());
        break;

// formatting elements (block)
    case ID_BLOCKQUOTE:
        n = new HTMLBlockquoteElementImpl(docPtr());
        break;
    case ID_DIV:
        n = new HTMLDivElementImpl(docPtr());
        break;
    case ID_H1:
    case ID_H2:
    case ID_H3:
    case ID_H4:
    case ID_H5:
    case ID_H6:
        n = new HTMLHeadingElementImpl(docPtr(), id);
        break;
    case ID_HR:
        n = new HTMLHRElementImpl(docPtr());
        break;
    case ID_P:
        n = new HTMLParagraphElementImpl(docPtr());
        break;
    case ID_PRE:
        n = new HTMLPreElementImpl(docPtr());
        break;

// font stuff
    case ID_BASEFONT:
        n = new HTMLBaseFontElementImpl(docPtr());
        break;
    case ID_FONT:
        n = new HTMLFontElementImpl(docPtr());
        break;

// ins/del
    case ID_DEL:
    case ID_INS:
        n = new HTMLModElementImpl(docPtr(), id);
        break;

// anchor
    case ID_A:
        n = new HTMLAnchorElementImpl(docPtr());
        break;

// images
    case ID_IMG:
        n = new HTMLImageElementImpl(docPtr());
        break;
    case ID_MAP:
        n = new HTMLMapElementImpl(docPtr());
        /*n = map;*/
        break;
    case ID_AREA:
        n = new HTMLAreaElementImpl(docPtr());
        break;

// objects, applets and scripts
    case ID_APPLET:
        n = new HTMLAppletElementImpl(docPtr());
        break;
    case ID_OBJECT:
        n = new HTMLObjectElementImpl(docPtr());
        break;
    case ID_PARAM:
        n = new HTMLParamElementImpl(docPtr());
        break;
    case ID_SCRIPT:
        n = new HTMLScriptElementImpl(docPtr());
        break;

// tables
    case ID_TABLE:
        n = new HTMLTableElementImpl(docPtr());
        break;
    case ID_CAPTION:
        n = new HTMLTableCaptionElementImpl(docPtr());
        break;
    case ID_COLGROUP:
    case ID_COL:
        n = new HTMLTableColElementImpl(docPtr(), id);
        break;
    case ID_TR:
        n = new HTMLTableRowElementImpl(docPtr());
        break;
    case ID_TD:
    case ID_TH:
        n = new HTMLTableCellElementImpl(docPtr(), id);
        break;
    case ID_THEAD:
    case ID_TBODY:
    case ID_TFOOT:
        n = new HTMLTableSectionElementImpl(docPtr(), id);
        break;

// inline elements
    case ID_BR:
        n = new HTMLBRElementImpl(docPtr());
        break;
    case ID_Q:
        n = new HTMLQuoteElementImpl(docPtr());
        break;

// elements with no special representation in the DOM

// block:
    case ID_ADDRESS:
    case ID_CENTER:
        n = new HTMLGenericElementImpl(docPtr(), id);
        break;
// inline
        // %fontstyle
    case ID_TT:
    case ID_U:
    case ID_B:
    case ID_I:
    case ID_S:
    case ID_STRIKE:
    case ID_BIG:
    case ID_SMALL:

        // %phrase
    case ID_EM:
    case ID_STRONG:
    case ID_DFN:
    case ID_CODE:
    case ID_SAMP:
    case ID_KBD:
    case ID_VAR:
    case ID_CITE:
    case ID_ABBR:
    case ID_ACRONYM:

        // %special
    case ID_SUB:
    case ID_SUP:
    case ID_SPAN:
        n = new HTMLGenericElementImpl(docPtr(), id);
        break;

    case ID_BDO:
        break;

// text
    case ID_TEXT:
        kdDebug( 6020 ) << "Use document->createTextNode()" << endl;
        break;

    default:
        break;
    }
    return n;
}

// Used to maintain list of all forms in document
QString DocumentImpl::registerElement(ElementImpl *e)
{
   m_registeredElements.append(e);
   QString state;
   if (!m_state.isEmpty())
   {
      state = m_state.first();
      m_state.remove(m_state.begin());
   }
   return state;
}

// Used to maintain list of all forms in document
void DocumentImpl::removeElement(ElementImpl *e)
{
   m_registeredElements.removeRef(e);
}

QStringList DocumentImpl::state()
{
   QStringList s;
   for( ElementImpl *e = m_registeredElements.first();
        e; e = m_registeredElements.next())
   {
       s.append(e->state());
   }
   return s;
}


RangeImpl *DocumentImpl::createRange()
{
    return new RangeImpl( docPtr() );
}

NodeIteratorImpl *DocumentImpl::createNodeIterator(NodeImpl *root, unsigned long whatToShow,
                                                   NodeFilter filter, bool entityReferenceExpansion,
                                                   int &exceptioncode)
{
    if (!root) {
        exceptioncode = DOMException::NOT_SUPPORTED_ERR;
        return 0;
    }

    return new NodeIteratorImpl(root,whatToShow,filter,entityReferenceExpansion);
}

TreeWalkerImpl *DocumentImpl::createTreeWalker(Node /*root*/, unsigned long /*whatToShow*/, NodeFilter /*filter*/,
                                bool /*entityReferenceExpansion*/)
{
    return new TreeWalkerImpl;
}

void DocumentImpl::applyChanges(bool,bool force)
{
    // ### move the following two lines to createSelector????
    delete m_styleSelector;
    m_styleSelector = 0;

    m_styleSelector = new CSSStyleSelector(this);
    if(!m_render) return;

    recalcStyle();

    // a style change can influence the children, so we just go
    // through them and trigger an appplyChanges there too
    NodeImpl *n = _first;
    while(n) {
        n->applyChanges(false,force || changed());
        n = n->nextSibling();
    }