C++ QDomElement::attributeNS方法代码示例

QString ElementWrapper::xmlBase() const
{
    if (!d->xmlBaseParsed) // xmlBase not computed yet
    {
        QDomElement current = d->element;
        
        while (!current.isNull())
        {
            if (current.hasAttributeNS(xmlNamespace(), QLatin1String("base")))
            {
                d->xmlBase = current.attributeNS(xmlNamespace(), QLatin1String("base"));
                return d->xmlBase;
            }
            
            QDomNode parent = current.parentNode();

            if (!parent.isNull() && parent.isElement())
                current = parent.toElement();
            else
                current = QDomElement();
        }
        
        d->xmlBaseParsed = true;
    }
    
    return d->xmlBase;
}

void AppUpdater::finishedRead( int id, bool errors )
{
	(void)errors;
	// we'll get called here alternately by the setHost( ) request and the actual GET request
	// we don't care about setHost, so just return and wait for the GET response
	if( id != httpGetID )
		return;
	
	QDomDocument doc;
	QString err;
	int line, col;
	
	if (!doc.setContent(http.readAll(), true, &err, &line, &col))
	{
		headline.setText( "<font size=4>Couldn't contact the update server...</font>" );
		details.setText( QString( "Make sure you're connected to the internet." ) );
		acceptButton.setText( tr("OK") );
		acceptButton.disconnect( ); // make sure it wasn't connected by anything else previously
		connect( &acceptButton, SIGNAL( clicked() ), this, SLOT( accept() ) );
		removeBrowserAndIgnoreButton( );

		if(!checkingOnStartup)
			this->show( );
		return;
	}
	
	QDomElement channel = doc.documentElement().firstChild().toElement();
	QDomNodeList items = channel.elementsByTagName("item");
	QPair<QString, QString> latest(MCBUILDER_VERSION, "");
	bool updateAvailable = false;
	
	for (int i=0, j=items.size(); i<j; i++)
	{
		QDomElement item = items.item(i).toElement();
		if( item.isNull() ) 
			continue;
		QDomNodeList enclosures = item.elementsByTagName("enclosure");
		
		for (int k=0, l=enclosures.size(); k<l; k++)
		{
			QDomElement enclosure = enclosures.item(k).toElement();
			if (enclosure.isNull()) continue;
			QString version = enclosure.attributeNS(
				"http://www.andymatuschak.org/xml-namespaces/sparkle", "version", "not-found" );
			
			// each item can have multiple enclosures, of which at least one
			// should have a version field
			if (version == "not-found") continue;
			
			if( versionCompare(version, latest.first) > 0 )
			{
				latest.first = version;
				QDomNodeList descs = item.elementsByTagName("description");
				//I(descs.size() == 1);
				QDomElement desc = descs.item(0).toElement();
				//I(!desc.isNull());
				latest.second = desc.text();
				updateAvailable = true;
			}
		}
	}

	// add the appropriate elements/info depending on whether an update is available
	if( updateAvailable )
	{
		headline.setText( "<font size=4>A new version of mcbuilder is available!</font>" );
		QString d = QString( "mcbuilder %1 is now available (you have %2).  Would you like to download it?" )
													.arg(latest.first).arg( MCBUILDER_VERSION );
		details.setText( d );
		browser.setHtml( latest.second );
		acceptButton.setText( tr("Visit Download Page") );
		acceptButton.disconnect( );
		ignoreButton.disconnect( );
		connect( &acceptButton, SIGNAL( clicked() ), this, SLOT( visitDownloadsPage() ) );
		connect( &ignoreButton, SIGNAL( clicked() ), this, SLOT( accept() ) );
		if( textLayout.indexOf( &browser ) < 0 ) // if the browser's not in the layout, then insert it after the details line
			textLayout.insertWidget( textLayout.indexOf( &details ) + 1, &browser );
		if( buttonLayout.indexOf( &ignoreButton ) < 0 ) // put the ignore button on the left
			buttonLayout.insertWidget( 0, &ignoreButton );
			
		this->show( );
	}
	else
	{
		headline.setText( "<font size=4>You're up to date!</font>" );
		details.setText( QString( "You're running the latest version of mcbuilder, version %1." ).arg( MCBUILDER_VERSION ) );
		acceptButton.setText( tr("OK") );
		acceptButton.disconnect( );
		connect( &acceptButton, SIGNAL( clicked() ), this, SLOT( accept() ) );
		removeBrowserAndIgnoreButton( );
		if(!checkingOnStartup)
			this->show( );
	}
}

	channels_container_t RSS10Parser::Parse (const QDomDocument& doc,
			const IDType_t& feedId) const
	{
		channels_container_t result;
	
		QMap<QString, Channel_ptr> item2Channel;
		QDomElement root = doc.documentElement ();
		QDomElement channelDescr = root.firstChildElement ("channel");
		while (!channelDescr.isNull ())
		{
			Channel_ptr channel (new Channel (feedId));
			channel->Title_ = channelDescr.firstChildElement ("title").text ().trimmed ();
			channel->Link_ = channelDescr.firstChildElement ("link").text ();
			channel->Description_ =
				channelDescr.firstChildElement ("description").text ();
			channel->PixmapURL_ =
				channelDescr.firstChildElement ("image")
				.firstChildElement ("url").text ();
			channel->LastBuild_ = GetDCDateTime (channelDescr);
	
			QDomElement itemsRoot = channelDescr.firstChildElement ("items");
			QDomNodeList seqs = itemsRoot.elementsByTagNameNS (RDF_, "Seq");
	
			channelDescr = channelDescr.nextSiblingElement ("channel");
	
			if (!seqs.size ())
				continue;
	
			QDomElement seqElem = seqs.at (0).toElement ();
			QDomNodeList lis = seqElem.elementsByTagNameNS (RDF_, "li");
			for (int i = 0; i < lis.size (); ++i)
				item2Channel [lis.at (i).toElement ().attribute ("resource")] = channel;
	
			result.push_back (channel);
		}
	
		QDomElement itemDescr = root.firstChildElement ("item");
		while (!itemDescr.isNull ())
		{
			QString about = itemDescr.attributeNS (RDF_, "about");
			if (item2Channel.contains (about))
			{
				Item_ptr item (new Item (item2Channel [about]->ChannelID_));
				item->Title_ = itemDescr.firstChildElement ("title").text ();
				item->Link_ = itemDescr.firstChildElement ("link").text ();
				item->Description_ = itemDescr.firstChildElement ("description").text ();
				GetDescription (itemDescr, item->Description_);
	
				item->Categories_ = GetAllCategories (itemDescr);
				item->Author_ = GetAuthor (itemDescr);
				item->PubDate_ = GetDCDateTime (itemDescr);
				item->Unread_ = true;
				item->NumComments_ = GetNumComments (itemDescr);
				item->CommentsLink_ = GetCommentsRSS (itemDescr);
				item->CommentsPageLink_ = GetCommentsLink (itemDescr);
				item->Enclosures_ = GetEncEnclosures (itemDescr, item->ItemID_);
				QPair<double, double> point = GetGeoPoint (itemDescr);
				item->Latitude_ = point.first;
				item->Longitude_ = point.second;
				if (item->Guid_.isEmpty ())
					item->Guid_ = "empty";
	
				item2Channel [about]->Items_.push_back (item);
			}
			itemDescr = itemDescr.nextSiblingElement ("item");
		}
	
		return result;
	}