kjs_window.cpp

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

Value Window::retrieve(KParts::ReadOnlyPart *p)
{
  assert(p);
  KHTMLPart * part = ::qt_cast<KHTMLPart *>(p);
  KJSProxy *proxy = 0L;
  if (!part) {
    part = ::qt_cast<KHTMLPart *>(p->parent());
    if (part)
      proxy = part->framejScript(p);
  } else
    proxy = part->jScript();
  if (proxy) {
#ifdef KJS_VERBOSE
    kdDebug(6070) << "Window::retrieve part=" << part << " '" << part->name() << "' interpreter=" << proxy->interpreter() << " window=" << proxy->interpreter()->globalObject().imp() << endl;
#endif
    return proxy->interpreter()->globalObject(); // the Global object is the "window"
  } else {
#ifdef KJS_VERBOSE
    kdDebug(6070) << "Window::retrieve part=" << p << " '" << p->name() << "' no jsproxy." << endl;
#endif
    return Undefined(); // This can happen with JS disabled on the domain of that window
  }
}

Location *Window::location() const
{
  if (!loc)
    const_cast<Window*>(this)->loc = new Location(m_frame);
  return loc;
}

ObjectImp* Window::frames( ExecState* exec ) const
{
  KHTMLPart *part = ::qt_cast<KHTMLPart *>(m_frame->m_part);
  if (part)
    return m_frames ? m_frames :
      (const_cast<Window*>(this)->m_frames = new FrameArray(exec, part));
  return 0L;
}

// reference our special objects during garbage collection
void Window::mark()
{
  ObjectImp::mark();
  if (screen && !screen->marked())
    screen->mark();
  if (history && !history->marked())
    history->mark();
  if (external && !external->marked())
    external->mark();
  if (m_frames && !m_frames->marked())
    m_frames->mark();
  //kdDebug(6070) << "Window::mark " << this << " marking loc=" << loc << endl;
  if (loc && !loc->marked())
    loc->mark();
  if (winq)
    winq->mark();
}

bool Window::hasProperty(ExecState *exec, const Identifier &p) const
{
  // we don't want any operations on a closed window
  if (m_frame.isNull() || m_frame->m_part.isNull())
    return ( p == "closed" );

  if (ObjectImp::hasProperty(exec, p))
    return true;

  if (Lookup::findEntry(&WindowTable, p))
    return true;

  KHTMLPart *part = ::qt_cast<KHTMLPart *>(m_frame->m_part);
  if (!part)
      return false;

  QString q = p.qstring();
  if (part->findFramePart(p.qstring()))
    return true;
  // allow window[1] or parent[1] etc. (#56983)
  bool ok;
  unsigned int i = p.toArrayIndex(&ok);
  if (ok) {
    QPtrList<KParts::ReadOnlyPart> frames = part->frames();
    unsigned int len = frames.count();
    if (i < len)
      return true;
  }

  // allow shortcuts like 'Image1' instead of document.images.Image1
  if (part->document().isHTMLDocument()) { // might be XML
    DOM::HTMLDocument doc = part->htmlDocument();
    // Keep in sync with tryGet

    if (static_cast<DOM::DocumentImpl*>(doc.handle())->underDocNamedCache().get(p.qstring()))
      return true;

    return !doc.getElementById(p.string()).isNull();
  }

  return false;
}

UString Window::toString(ExecState *) const
{
  return "[object Window]";
}

Value Window::get(ExecState *exec, const Identifier &p) const
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "Window("<<this<<")::get " << p.qstring() << endl;
#endif
  // we don't want any operations on a closed window
  if (m_frame.isNull() || m_frame->m_part.isNull()) {
    if ( p == "closed" )
      return Boolean( true );
    return Undefined();
  }

  // Look for overrides first
  ValueImp *val = getDirect(p);
  if (val) {
    //kdDebug(6070) << "Window::get found dynamic property '" << p.ascii() << "'" << endl;
    return isSafeScript(exec) ? Value(val) : Undefined();
  }

  const HashEntry* entry = Lookup::findEntry(&WindowTable, p);
  KHTMLPart *part = ::qt_cast<KHTMLPart *>(m_frame->m_part);

  // properties that work on all windows
  if (entry) {
    // ReadOnlyPart first
    switch(entry->value) {
    case Closed:
      return Boolean( false );
    case _Location:
        // No isSafeScript test here, we must be able to _set_ location.href (#49819)
      return Value(location());
    case _Window:
    case Self:
      return retrieve(m_frame->m_part);
    default:
        break;
    }
    if (!part)
        return Undefined();
    // KHTMLPart next
    switch(entry->value) {
    case Frames:
      return Value(frames(exec));
    case Opener:
      if (!part->opener())
        return Null();    // ### a null Window might be better, but == null
      else                // doesn't work yet
        return retrieve(part->opener());
    case Parent:
      return retrieve(part->parentPart() ? part->parentPart() : (KHTMLPart*)part);
    case Top: {
      KHTMLPart *p = part;
      while (p->parentPart())
        p = p->parentPart();
      return retrieve(p);
    }
    case Alert:
    case Confirm:
    case Prompt:
    case Open:
    case Close:
    case Focus:
    case Blur:
    case AToB:
    case BToA:
    case GetComputedStyle:
      return lookupOrCreateFunction<WindowFunc>(exec,p,this,entry->value,entry->params,entry->attr);
    default:
      break;
    }
  } else if (!part) {
    // not a  KHTMLPart
    QString rvalue;
    KParts::LiveConnectExtension::Type rtype;
    unsigned long robjid;
    if (m_frame->m_liveconnect &&
        isSafeScript(exec) &&
        m_frame->m_liveconnect->get(0, p.qstring(), rtype, robjid, rvalue))
      return getLiveConnectValue(m_frame->m_liveconnect, p.qstring(), rtype, rvalue, robjid);
    return Undefined();
  }
  // properties that only work on safe windows
  if (isSafeScript(exec) &&  entry)
  {
    //kdDebug(6070) << "token: " << entry->value << endl;
    switch( entry->value ) {
    case Crypto:
      return Undefined(); // ###
    case DefaultStatus:
      return String(UString(part->jsDefaultStatusBarText()));
    case Status:
      return String(UString(part->jsStatusBarText()));
    case Document:
      if (part->document().isNull()) {
        kdDebug(6070) << "Document.write: adding <HTML><BODY> to create document" << endl;
        part->begin();
        part->write("<HTML><BODY>");
        part->end();
      }
      return getDOMNode(exec,part->document());
    case FrameElement:
      if (m_frame->m_frame)
        return getDOMNode(exec,m_frame->m_frame->element());
      else
        return Undefined();
    case Node:
      return getNodeConstructor(exec);
    case Range:
      return getRangeConstructor(exec);
    case NodeFilter:
      return getNodeFilterConstructor(exec);
    case DOMException:
      return getDOMExceptionConstructor(exec);
    case CSSRule:
      return getCSSRuleConstructor(exec);
    case EventCtor:
      return getEventConstructor(exec);
    case _History:
      return Value(history ? history :
                   (const_cast<Window*>(this)->history = new History(exec,part)));

    case _External:
      return Value(external ? external :
                   (const_cast<Window*>(this)->external = new External(exec,part)));

    case Event:
      if (m_evt)
        return getDOMEvent(exec,*m_evt);
      else {
#ifdef KJS_VERBOSE
        kdDebug(6070) << "WARNING: window(" << this << "," << part->name() << ").event, no event!" << endl;
#endif
        return Undefined();
      }
    case InnerHeight:
      if (!part->view())
        return Undefined();
      khtml::RenderWidget::flushWidgetResizes(); // make sure frames have their final size
      return Number(part->view()->visibleHeight());
    case InnerWidth:
      if (!part->view())
        return Undefined();
      khtml::RenderWidget::flushWidgetResizes(); // make sure frames have their final size
      return Number(part->view()->visibleWidth());
    case Length:
      return Number(part->frames().count());
    case Name:
      return String(part->name());
    case SideBar:
      return Value(new MozillaSidebarExtension(exec, part));
    case _Navigator:
    case ClientInformation: {
      // Store the navigator in the object so we get the same one each time.
      Value nav( new Navigator(exec, part) );
      const_cast<Window *>(this)->put(exec, "navigator", nav, DontDelete|ReadOnly|Internal);
      const_cast<Window *>(this)->put(exec, "clientInformation", nav, DontDelete|ReadOnly|Internal);
      return nav;
    }
#ifdef Q_WS_QWS
    case _Konqueror: {
      Value k( new Konqueror(part) );
      const_cast<Window *>(this)->put(exec, "konqueror", k, DontDelete|ReadOnly|Internal);
      return k;
    }
#endif
    case OffscreenBuffering:
      return Boolean(true);
    case OuterHeight:
    case OuterWidth:
    {
#if defined Q_WS_X11 && ! defined K_WS_QTONLY
      if (!part->widget())
        return Number(0);
      KWin::WindowInfo inf = KWin::windowInfo(part->widget()->topLevelWidget()->winId());
      return Number(entry->value == OuterHeight ?
                    inf.geometry().height() : inf.geometry().width());
#else
      return Number(entry->value == OuterHeight ?  
		    part->view()->height() : part->view()->width());
#endif
    }
    case PageXOffset:
      return Number(part->view()->contentsX());
    case PageYOffset:
      return Number(part->view()->contentsY());
    case Personalbar:
      return Undefined(); // ###
    case ScreenLeft:
    case ScreenX: {
      if (!part->view())
        return Undefined();
      QRect sg = KGlobalSettings::desktopGeometry(part->view());
      return Number(part->view()->mapToGlobal(QPoint(0,0)).x() + sg.x());
    }
    case ScreenTop:
    case ScreenY: {
      if (!part->view())
        return Undefined();
      QRect sg = KGlobalSettings::desktopGeometry(part->view());
      return Number(part->view()->mapToGlobal(QPoint(0,0)).y() + sg.y());
    }
    case ScrollX: {
      if (!part->view())
        return Undefined();
      return Number(part->view()->contentsX());
    }
    case ScrollY: {
      if (!part->view())
        return Undefined();
      return Number(part->view()->contentsY());
    }
    case Scrollbars:
      return Undefined(); // ###
    case _Screen:
      return Value(screen ? screen :
                   (const_cast<Window*>(this)->screen = new Screen(exec)));
    case Image:
      return Value(new ImageConstructorImp(exec, part->document()));
    case Option:
      return Value(new OptionConstructorImp(exec, part->document()));
    case XMLHttpRequest:
      return Value(new XMLHttpRequestConstructorImp(exec, part->document()));
    case XMLSerializer:
      return Value(new XMLSerializerConstructorImp(exec));
    case DOMParser:
      return Value(new DOMParserConstructorImp(exec, part->xmlDocImpl()));
    case Scroll: // compatibility
    case ScrollBy:
    case ScrollTo:
    case MoveBy:
    case MoveTo:
    case ResizeBy:
    case ResizeTo:
    case CaptureEvents:
    case ReleaseEvents:
    case AddEventListener:
    case RemoveEventListener:
    case SetTimeout:
    case ClearTimeout:
    case SetInterval:
    case ClearInterval:
    case Print:
      return lookupOrCreateFunction<WindowFunc>(exec,p,this,entry->value,entry->params,entry->attr);
    // IE extension
    case Navigate:
      // Disabled in NS-compat mode. Supported by default - can't hurt, unless someone uses
      // if (navigate) to test for IE (unlikely).
      if ( exec->interpreter()->compatMode() == Interpreter::NetscapeCompat )
        return Undefined();
      return lookupOrCreateFunction<WindowFunc>(exec,p,this,entry->value,entry->params,entry->attr);
    case Onabort:
      return getListener(exec,DOM::EventImpl::ABORT_EVENT);
    case Onblur:
      return getListener(exec,DOM::EventImpl::BLUR_EVENT);
    case Onchange:
      return getListener(exec,DOM::EventImpl::CHANGE_EVENT);
    case Onclick:
      return getListener(exec,DOM::EventImpl::KHTML_ECMA_CLICK_EVENT);
    case Ondblclick:
      return getListener(exec,DOM::EventImpl::KHTML_ECMA_DBLCLICK_EVENT);
    case Ondragdrop:
      return getListener(exec,DOM::EventImpl::KHTML_DRAGDROP_EVENT);
    case Onerror:
      return getListener(exec,DOM::EventImpl::KHTML_ERROR_EVENT);
    case Onfocus:
      return getListener(exec,DOM::EventImpl::FOCUS_EVENT);