html_objectimpl.cpp

最新Nokia手机浏览器全套源代码完美版。

/**
 * 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 Stefan Schimanski ([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.
 */
#include "html/html_objectimpl.h"

#include "khtml_part.h"
#include "dom/dom_string.h"
#include "misc/htmlhashes.h"
#include "khtmlview.h"
#include <qstring.h>
#include <qmap.h>
#include <kdebug.h>

#include "xml/dom_docimpl.h"
#include "html/htmltokenizer.h"
#include "css/cssstyleselector.h"
#include "css/csshelper.h"
#include "css/cssproperties.h"
#include "css/cssvalues.h"
#include "rendering/render_applet.h"
#include "rendering/render_frames.h"
#include "rendering/render_image.h"
#include "xml/dom2_eventsimpl.h"

#ifndef Q_WS_QWS // We don't have Java in Qt Embedded
#include "java/kjavaappletwidget.h"
#include "java/kjavaappletcontext.h"
#endif

#if APPLE_CHANGES
#include "KWQKHTMLPart.h"
#endif

using namespace DOM;
using namespace khtml;

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

HTMLAppletElementImpl::HTMLAppletElementImpl(DocumentPtr *doc)
  : HTMLElementImpl(doc)
{
#if !NOKIA_CHANGES
    appletInstance = 0;
#endif
    m_allParamsAvailable = false;
}

HTMLAppletElementImpl::~HTMLAppletElementImpl()
{
#if !NOKIA_CHANGES
    delete appletInstance;
#endif
}

NodeImpl::Id HTMLAppletElementImpl::id() const
{
    return ID_APPLET;
}

bool HTMLAppletElementImpl::mapToEntry(NodeImpl::Id attr, MappedAttributeEntry& result) const
{
    switch (attr) {
        case ATTR_WIDTH:
        case ATTR_HEIGHT:
            result = eUniversal;
            return false;
        case ATTR_ALIGN:
            result = eReplaced; // Share with <img> since the alignment behavior is the same.
            return false;
        default:
            break;
    }

    return HTMLElementImpl::mapToEntry(attr, result);
}

void HTMLAppletElementImpl::parseHTMLAttribute(HTMLAttributeImpl *attr)
{
    switch (attr->id()) {
    case ATTR_ALT:
    case ATTR_ARCHIVE:
    case ATTR_CODE:
    case ATTR_CODEBASE:
    case ATTR_MAYSCRIPT:
    case ATTR_NAME:
    case ATTR_OBJECT:
        break;
    case ATTR_WIDTH:
        addCSSLength(attr, CSS_PROP_WIDTH, attr->value());
        break;
    case ATTR_HEIGHT:
        addCSSLength(attr, CSS_PROP_HEIGHT, attr->value());
        break;
    case ATTR_ALIGN:
  addHTMLAlignment(attr);
  break;
    default:
        HTMLElementImpl::parseHTMLAttribute(attr);
    }
}

bool HTMLAppletElementImpl::rendererIsNeeded(RenderStyle *style)
{
#if NOKIA_CHANGES
    if (getDocument()->fastDisplayMode())
        return false;
#endif
    return !getAttribute(ATTR_CODE).isNull();
}

RenderObject *HTMLAppletElementImpl::createRenderer(RenderArena *arena, RenderStyle *style)
{
#ifndef Q_WS_QWS // FIXME(E)? I don't think this is possible with Qt Embedded...
    KHTMLPart *part = getDocument()->part();

    if( part && part->javaEnabled() )
    {
  QMap<QString, QString> args;

  args.insert( "code", getAttribute(ATTR_CODE).string());
  DOMString codeBase = getAttribute(ATTR_CODEBASE);
  if(!codeBase.isNull())
      args.insert( "codeBase", codeBase.string() );
  DOMString name = getDocument()->htmlMode() != DocumentImpl::XHtml ?
       getAttribute(ATTR_NAME) : getAttribute(ATTR_ID);
  if(!name.isNull())
      args.insert( "name", name.string() );
  DOMString archive = getAttribute(ATTR_ARCHIVE);
  if(!archive.isNull())
      args.insert( "archive", archive.string() );

  args.insert( "baseURL", getDocument()->baseURL() );

        DOMString mayScript = getAttribute(ATTR_MAYSCRIPT);
        if (!mayScript.isNull())
            args.insert("mayScript", mayScript.string());

        // Other arguments (from <PARAM> tags) are added later.

        return new (getDocument()->renderArena()) RenderApplet(this, args);
    }

    // ### remove me. we should never show an empty applet, instead
    // render the alternative content given by the webpage
    return new (getDocument()->renderArena()) RenderEmptyApplet(this);
#else
    return 0;
#endif
}

bool HTMLAppletElementImpl::getMember(const QString & name, JType & type, QString & val) {
#if APPLE_CHANGES
    return false;
#else
#ifndef Q_WS_QWS // We don't have Java in Qt Embedded
    if ( !m_render || !m_render->isApplet() )
        return false;
    KJavaAppletWidget *w = static_cast<KJavaAppletWidget*>(static_cast<RenderApplet*>(m_render)->widget());
    return (w && w->applet() && w->applet()->getMember(name, type, val));
#else
    return false;
#endif
#endif
}

bool HTMLAppletElementImpl::callMember(const QString & name, const QStringList & args, JType & type, QString & val) {
#if APPLE_CHANGES
    return false;
#else
#ifndef Q_WS_QWS // We don't have Java in Qt Embedded
    if ( !m_render || !m_render->isApplet() )
        return false;
    KJavaAppletWidget *w = static_cast<KJavaAppletWidget*>(static_cast<RenderApplet*>(m_render)->widget());
    return (w && w->applet() && w->applet()->callMember(name, args, type, val));
#else
    return false;
#endif
#endif
}

#if APPLE_CHANGES
#if !NOKIA_CHANGES
KJS::Bindings::Instance *HTMLAppletElementImpl::getAppletInstance() const
{
    KHTMLPart* part = getDocument()->part();
    if (!part || !part->javaEnabled())
        return 0;

    if (appletInstance)
        return appletInstance;

    RenderApplet *r = static_cast<RenderApplet*>(m_render);
    if (r) {
        r->createWidgetIfNecessary();
        if (r->widget()){
            // Call into the part (and over the bridge) to pull the Bindings::Instance
            // from the guts of the plugin.
            void *_view = r->widget()->getView();
            appletInstance = KWQ(part)->getAppletInstanceForView((NSView *)_view);
        }
    }
    return appletInstance;
}
#endif

void HTMLAppletElementImpl::closeRenderer()
{
    // The parser just reached </applet>, so all the params are available now.
    m_allParamsAvailable = true;
    if( m_render )
        m_render->setNeedsLayout(true); // This will cause it to create its widget & the Java applet

    HTMLElementImpl::closeRenderer();
}

bool HTMLAppletElementImpl::allParamsAvailable()
{
    return m_allParamsAvailable;
}
#endif

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

HTMLEmbedElementImpl::HTMLEmbedElementImpl(DocumentPtr *doc)
    : HTMLElementImpl(doc)
#if !NOKIA_CHANGES
    , embedInstance(0)
#endif
{
#if NOKIA_CHANGES
  needWidgetUpdate = false;
#endif
}

HTMLEmbedElementImpl::~HTMLEmbedElementImpl()
{
}

NodeImpl::Id HTMLEmbedElementImpl::id() const
{
    return ID_EMBED;
}

#if APPLE_CHANGES && !NOKIA_CHANGES
KJS::Bindings::Instance *HTMLEmbedElementImpl::getEmbedInstance() const
{
    KHTMLPart* part = getDocument()->part();
    if (!part)
        return 0;

    if (embedInstance)
        return embedInstance;

    RenderPartObject *r = static_cast<RenderPartObject*>(m_render);
    if (r) {
        if (r->widget()){
            // Call into the part (and over the bridge) to pull the Bindings::Instance
            // from the guts of the Java VM.
            void *_view = r->widget()->getView();
            embedInstance = KWQ(part)->getEmbedInstanceForView((NSView *)_view);
            // Applet may specified with <embed> tag.
            if (!embedInstance)
                embedInstance = KWQ(part)->getAppletInstanceForView((NSView *)_view);
        }
    }
    return embedInstance;
}
#endif

bool HTMLEmbedElementImpl::mapToEntry(NodeImpl::Id attr, MappedAttributeEntry& result) const
{
    switch (attr) {
        case ATTR_WIDTH:
        case ATTR_HEIGHT:
        case ATTR_BORDER:
        case ATTR_VSPACE:
        case ATTR_HSPACE:
        case ATTR_VALIGN:
        case ATTR_HIDDEN:
            result = eUniversal;
            return false;
        case ATTR_ALIGN:
            result = eReplaced; // Share with <img> since the alignment behavior is the same.
            return false;
        default:
            break;
    }

    return HTMLElementImpl::mapToEntry(attr, result);
}

void HTMLEmbedElementImpl::parseHTMLAttribute(HTMLAttributeImpl *attr)
{
  QString val = attr->value().string();

  int pos;
  switch ( attr->id() )
  {
     case ATTR_TYPE:
        serviceType = val.lower();
        pos = serviceType.find( ";" );
        if ( pos!=-1 )
            serviceType = serviceType.left( pos );
        break;
     case ATTR_CODE:
        url = khtml::parseURL(attr->value()).string();
    break;
     case ATTR_SRC:
         url = khtml::parseURL(attr->value()).string();
#if NOKIA_CHANGES
    if ( m_render )
          {
      needWidgetUpdate = true;
      if ( canRenderImageType( serviceType ) )
        {
            if ( !m_imageLoader )
        {
              m_imageLoader = new HTMLImageLoader( this );
        }
            m_imageLoader->updateFromElement( );
            }
      else
            {
            setChanged( );
            }
          }
#endif
         break;
     case ATTR_WIDTH:
        addCSSLength( attr, CSS_PROP_WIDTH, attr->value() );
        break;
     case ATTR_HEIGHT:
        addCSSLength( attr, CSS_PROP_HEIGHT, attr->value());
        break;
     case ATTR_BORDER:
        addCSSLength(attr, CSS_PROP_BORDER_WIDTH, attr->value());
        addCSSProperty( attr, CSS_PROP_BORDER_TOP_STYLE, CSS_VAL_SOLID );
        addCSSProperty( attr, CSS_PROP_BORDER_RIGHT_STYLE, CSS_VAL_SOLID );
        addCSSProperty( attr, CSS_PROP_BORDER_BOTTOM_STYLE, CSS_VAL_SOLID );
        addCSSProperty( attr, CSS_PROP_BORDER_LEFT_STYLE, CSS_VAL_SOLID );
        break;
     case ATTR_VSPACE:
        addCSSLength(attr, CSS_PROP_MARGIN_TOP, attr->value());
        addCSSLength(attr, CSS_PROP_MARGIN_BOTTOM, attr->value());
        break;
     case ATTR_HSPACE:
        addCSSLength(attr, CSS_PROP_MARGIN_LEFT, attr->value());
        addCSSLength(attr, CSS_PROP_MARGIN_RIGHT, attr->value());
        break;
     case ATTR_ALIGN:
  addHTMLAlignment(attr);
  break;
     case ATTR_VALIGN:
        addCSSProperty(attr, CSS_PROP_VERTICAL_ALIGN, attr->value());
        break;
     case ATTR_PLUGINPAGE:
     case ATTR_PLUGINSPAGE:
        pluginPage = val;
        break;
     case ATTR_HIDDEN:
        if (val.lower()=="yes" || val.lower()=="true") {
            // FIXME: Not dynamic, but it's not really important that such a rarely-used
            // feature work dynamically.
            addCSSLength( attr, CSS_PROP_WIDTH, "0" );
            addCSSLength( attr, CSS_PROP_HEIGHT, "0" );
        }
        break;
     default:
        HTMLElementImpl::parseHTMLAttribute( attr );
  }
}

bool HTMLEmbedElementImpl::rendererIsNeeded(RenderStyle *style)
{
#if NOKIA_CHANGES
  if (canRenderImageType(serviceType))
    {
      return HTMLElementImpl::rendererIsNeeded(style);
      }
    if (getDocument()->fastDisplayMode())
        return false;
#endif
    KHTMLPart *part = getDocument()->part();
    if (!part)
  return false;
    return part->pluginsEnabled() && parentNode()->id() != ID_OBJECT;
}

RenderObject *HTMLEmbedElementImpl::createRenderer(RenderArena *arena, RenderStyle *style)
{
#if NOKIA_CHANGES
  if (canRenderImageType(serviceType))
    {
    return new (arena) RenderImage(this);
    }
#endif
    return new (arena) RenderPartObject(this);
}

void HTMLEmbedElementImpl::attach()
{
    HTMLElementImpl::attach();

#if NOKIA_CHANGES
  if (m_render)
      {
      if (canRenderImageType(serviceType))
        {
        if (!m_imageLoader)
          {
          m_imageLoader = new HTMLImageLoader(this);
          }
        m_imageLoader->updateFromElement();
        if (renderer())
          {
          RenderImage* imageObj = static_cast<RenderImage*>(renderer());
          imageObj->setImage(m_imageLoader->image());
          }
        }
      else
        {
        if (needWidgetUpdate)
          {
          // Set needWidgetUpdate to false before calling updateWidget because updateWidget may cause
          // this method or recalcStyle (which also calls updateWidget) to be called.
          needWidgetUpdate = false;
          static_cast<RenderPartObject*>(m_render)->updateWidget();
          dispatchHTMLEvent(EventImpl::LOAD_EVENT,false,false);
          }
        else
          {
          needWidgetUpdate = true;
          setChanged();
          }
        }
      }