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 $

                            }
                        }
                    }
                    if (s != null) {
                        if (svgDocument != null) {
                            ParsedURL docPURL 
                                = new ParsedURL(svgDocument.getURL());
                            ParsedURL purl = new ParsedURL(docPURL, s);
                            String fi = svgCanvas.getFragmentIdentifier();
                            if (docPURL.equals(purl) && t.equals(fi)) {
                                return;
                            }
                        }

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            /* Nothing to do */
        }


        if (node == null) {
            String baseURI = XMLBaseSupport.getCascadedXMLBase(e);
            ParsedURL purl;
            if (baseURI == null)
                purl = new ParsedURL(uriStr);
            else 
                purl = new ParsedURL(baseURI, uriStr);


            // try to load the image as a raster image (JPG or PNG)
            node = createRasterImageNode(ctx, e, purl);
        }
        return node;

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                    }


                    if (st != null) {
                        if (svgDocument != null) {
                            SVGOMDocument doc = (SVGOMDocument)svgDocument;
                            ParsedURL docPURL 
                                = new ParsedURL(svgDocument.getURL());
                            ParsedURL purl = new ParsedURL(docPURL, st);
                            String fi = svgCanvas.getFragmentIdentifier();
                            fi = (fi == null) ? "" : fi;
                            if (docPURL.equals(purl) && t.equals(fi)) {
                                return;
                            }

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    /**
     * Shows the given document into the viewer frame
     */
    public void showSVGDocument(String uri){
        try {
            ParsedURL purl = new ParsedURL(uri);
            SquiggleInputHandler 
                handler = getInputHandler(purl);
            
            handler.handle(purl,
                           JSVGViewerFrame.this);

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     * Called when a link was activated.
     */
    public void linkActivated(LinkActivationEvent e) {
        String s = e.getReferencedURI();
        if (svgDocument != null) {
            ParsedURL docURL = new ParsedURL(svgDocument.getURL());
            ParsedURL url    = new ParsedURL(docURL, s);
            if (!url.sameFile(docURL)) {
                return;
            }


            if (s.indexOf("#") != -1) {
                localHistory.update(s);

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            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;
            }


            // Avoid reloading if possible.
            if (svgDocument != 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();
                }
                ParsedURL oldURI = new ParsedURL(svgDocument.getURL());
                ParsedURL newURI = new ParsedURL(oldURI, href);


                String s = newURI.getRef();
                if (newURI.sameFile(oldURI)) {
                    if ((fragmentIdentifier == null && s != null) ||
                        (s == null && fragmentIdentifier != null) ||
                        (s != null && !s.equals(fragmentIdentifier))) {
                        fragmentIdentifier = s;
                        computeRenderingTransform();
                    }
                    fireLinkActivatedEvent(elt, newURI.toString());
                    return;
                }
            }
            fireLinkActivatedEvent(elt, href);
            if (svgUserAgent != null) {

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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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        String oldURI = null;
        if (svgDocument != null) {
            oldURI = svgDocument.getURL();
        }
        ParsedURL newURI = null;
        newURI = new ParsedURL(oldURI, url);


        url = newURI.toString();
        fragmentIdentifier = newURI.getRef();


        loader = new DocumentLoader(userAgent);
        nextDocumentLoader = new SVGDocumentLoader(url, loader);
        nextDocumentLoader.setPriority(Thread.MIN_PRIORITY);

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            /* Nothing to do */
        }


        if (node == null) {
            String baseURI = XMLBaseSupport.getCascadedXMLBase(e);
            ParsedURL purl;
            if (baseURI == null)
                purl = new ParsedURL(uriStr);
            else 
                purl = new ParsedURL(baseURI, uriStr);


            // try to load the image as a raster image (JPG or PNG)
            node = createRasterImageNode(ctx, e, purl);
        }

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