Examples of org.apache.batik.util.ParsedURL

org.apache.batik.util.ParsedURL
This class is used as a replacement for java.net.URL. This is done for several reasons. First unlike java.net.URL this class will accept and parse as much of a URL as possible, without throwing a MalformedURL exception. This makes it extreamly useful for simply parsing a URL string (hence it's name). Second it allows for extension of the protocols supported by the URL parser. Batik uses this to support the 'Data' protocol. Third by default it checks the streams that it opens to see if they are GZIP compressed, if so it automatically uncompresses them (avoiding opening the stream twice in the processes). It is worth noting that most real work is defered to the ParsedURLData class to which most methods are forwarded. This is done because it allows a constructor interface to ParsedURL (mostly for compatability with core URL), in spite of the fact that the real implemenation uses the protocol handlers as factories for protocol specific instances of the ParsedURLData class. @author Thomas DeWeese @version $Id: ParsedURL.java,v 1.14 2002/08/01 20:24:32 deweese Exp $

            String href = XLinkSupport.getXLinkHref(elt);
            if (show.equals("new")) {
                fireLinkActivatedEvent(elt, href);
                if (svgUserAgent != null) {
                    String oldURI = svgDocument.getURL();
                    ParsedURL newURI = null;
                    // if the anchor element is in an external resource
                    if (elt.getOwnerDocument() != svgDocument) {
                        SVGDocument doc = (SVGDocument)elt.getOwnerDocument();
                        href = new ParsedURL(doc.getURL(), href).toString();
                    }
                    newURI = new ParsedURL(oldURI, href);
                    href = newURI.toString();
                    svgUserAgent.openLink(href, true);
                } else {
                    JSVGComponent.this.loadSVGDocument(href);
                }
                return;
            }


            // Always use anchor element's document for base URI,
            // for when it comes from an external resource.
            ParsedURL newURI = new ParsedURL
                (((SVGDocument)elt.getOwnerDocument()).getURL(), href);


            // replace href with a fully resolved URI.
            href = newURI.toString();


            // Avoid reloading if possible.
            if (svgDocument != null) {


                ParsedURL oldURI = new ParsedURL(svgDocument.getURL());
                // Check if they reference the same file.
                if (newURI.sameFile(oldURI)) {
                    // They do, see if it's a new Fragment Ident.
                    String s = newURI.getRef();
                    if ((fragmentIdentifier != s) &&

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            Thread t = new Thread() {
                    public void run() {
                        try {
                            URL burl;
                            burl = ((SVGOMDocument)document).getURLObject();
                            final ParsedURL purl = new ParsedURL(burl, uri);
                            String e = EncodingUtilities.javaEncoding(enc);
                            e = ((e == null) ? enc : e);
                            Reader r =
                                new InputStreamReader(purl.openStream(), e);
                            r = new BufferedReader(r);
                            final StringWriter sw = new StringWriter();
                            int read;
                            char[] buf = new char[4096];
                            while ((read = r.read(buf, 0, buf.length)) != -1) {
                                sw.write(buf, 0, read);
                            }


                            updateRunnableQueue.invokeLater(new Runnable() {
                                    public void run() {
                                        try {
                                            h.getURLDone(true,
                                                         purl.getContentType(),
                                                         sw.toString());
                                        } catch (Exception e){
                                            if (userAgent != null) {
                                                userAgent.displayError(e);
                                            }

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     * Loads an image from a URL
     */
    protected BufferedImage getImage(URL url) 
        throws IOException {
        ImageTagRegistry reg = ImageTagRegistry.getRegistry();
        Filter filt = reg.readURL(new ParsedURL(url));
        if(filt == null)
            throw new IOException(Messages.formatMessage
                                  (COULD_NOT_LOAD_IMAGE,
                                   new Object[]{url.toString()}));

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                                                        ctx);


        Filter filter = null;
        // try to load the image as an svg document
        SVGDocument svgDoc = (SVGDocument)filterElement.getOwnerDocument();
        ParsedURL purl;
        URL baseURL = ((SVGOMDocument)svgDoc).getURLObject();
        if (baseURL != null)
            purl = new ParsedURL(baseURL.toString(), uriStr);
        else
            purl = new ParsedURL(uriStr);


        // try to load an SVG document
        DocumentLoader loader = ctx.getDocumentLoader();
        URIResolver resolver = new URIResolver(svgDoc, loader);
        boolean toBBoxNeeded = false;
        try {
            Element refElement = null;
            Node n = resolver.getNode(purl.toString(), filterElement);
            if (n.getNodeType() == n.DOCUMENT_NODE) {
                refElement = ((SVGDocument)n).getRootElement();
            } else if (n.getNodeType() == Node.ELEMENT_NODE) {
                refElement = (Element)n;
                toBBoxNeeded = true;

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                return null; // no xlink:href found, exit
            }
            // check if there is circular dependencies
            SVGOMDocument doc =
                (SVGOMDocument)patternElement.getOwnerDocument();
            ParsedURL purl = new ParsedURL(doc.getURL(), uri);
            if (!purl.complete())
                throw new BridgeException(patternElement,
                                          ERR_URI_MALFORMED,
                                          new Object[] {uri});


            if (contains(refs, purl)) {

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                return userAgent.getScriptSecurity(scriptType,
                                                   scriptPURL,
                                                   docPURL);
            } else {
                final String st = scriptType;
                final ParsedURL sPURL= scriptPURL;
                final ParsedURL dPURL= docPURL;
                class Query implements Runnable {
                    ScriptSecurity result;
                    public void run() {
                        result = userAgent.getScriptSecurity(st, sPURL, dPURL);
                    }

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                userAgent.checkLoadScript(scriptType,
                                          scriptPURL,
                                          docPURL);
            } else {
                final String st = scriptType;
                final ParsedURL sPURL= scriptPURL;
                final ParsedURL dPURL= docPURL;
                class Query implements Runnable {
                    SecurityException se = null;
                    public void run() {
                        try {
                            userAgent.checkLoadScript(st, sPURL, dPURL);

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                                        ParsedURL docPURL){
            if (EventQueue.isDispatchThread()) {
                return userAgent.getExternalResourceSecurity(resourcePURL,
                                                             docPURL);
            } else {
                final ParsedURL rPURL= resourcePURL;
                final ParsedURL dPURL= docPURL;
                class Query implements Runnable {
                    ExternalResourceSecurity result;
                    public void run() {
                        result = userAgent.getExternalResourceSecurity(rPURL, dPURL);
                    }

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                                      ParsedURL docURL) throws SecurityException {
            if (EventQueue.isDispatchThread()) {
                userAgent.checkLoadExternalResource(resourceURL,
                                                    docURL);
            } else {
                final ParsedURL rPURL= resourceURL;
                final ParsedURL dPURL= docURL;
                class Query implements Runnable {
                    SecurityException se;
                    public void run() {
                        try {
                            userAgent.checkLoadExternalResource(rPURL, dPURL);

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        Attr xmlBase = localRefElement.getAttributeNodeNS
            (XML_NAMESPACE_URI, "xml:base");
        if (xmlBase != null) {
            // We have a current base so merge it with our new base and
            // set the result...
            ParsedURL purl = new ParsedURL(uri, xmlBase.getNodeValue());
            uri = purl.toString();
        }
        localRefElement.setAttributeNS(XML_NAMESPACE_URI,
                                       "xml:base",
                                       uri);

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