Examples of org.apache.fop.fo.extensions.ExtensionAttachment

org.apache.fop.fo.extensions.ExtensionAttachment
This interface is implemented by objects that are returned by special extension element through the FONode.getExtensionAttachment() method. Such objects are carried in the FO tree and made available to the layout managers that support processing extension attachments or support passing them on to the area tree where they can be picked up by renderers.
NOTE: Classes which implement this interface need to be Serializable!

                && pageViewport.getExtensionAttachments().size() > 0) {
            // Extract all AFPPageSetup instances from the attachment list on
            // the s-p-m
            Iterator it = pageViewport.getExtensionAttachments().iterator();
            while (it.hasNext()) {
                ExtensionAttachment attachment = (ExtensionAttachment) it.next();
                if (AFPPageSetup.CATEGORY.equals(attachment.getCategory())) {
                    if (attachment instanceof AFPPageSetup) {
                        AFPPageSetup aps = (AFPPageSetup) attachment;
                        String element = aps.getElementName();
                        if (AFPElementMapping.INCLUDE_PAGE_SEGMENT
                                .equals(element)) {

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    /** {@inheritDoc} */
    public void processOffDocumentItem(OffDocumentItem oDI) {
        if (oDI instanceof BookmarkData) {
            renderBookmarkTree((BookmarkData) oDI);
        } else if (oDI instanceof OffDocumentExtensionAttachment) {
            ExtensionAttachment attachment = ((OffDocumentExtensionAttachment)oDI).getAttachment();
            if (extensionAttachments == null) {
                extensionAttachments = new java.util.ArrayList();
            }
            extensionAttachments.add(attachment);
        } else {

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         * An example of object handled here are ExtensionAttachments.
         * @param obj the Object to be handled.
         */
        protected void handleExternallyGeneratedObject(Object obj) {
            if (areaStack.size() == 0 && obj instanceof ExtensionAttachment) {
                ExtensionAttachment attachment = (ExtensionAttachment)obj;
                if (this.currentPageViewport == null) {
                    this.treeModel.handleOffDocumentItem(
                            new OffDocumentExtensionAttachment(attachment));
                } else {
                    this.currentPageViewport.addExtensionAttachment(attachment);
                }
            } else {
                Object o = areaStack.peek();
                if (o instanceof AreaTreeObject && obj instanceof ExtensionAttachment) {
                    AreaTreeObject ato = (AreaTreeObject)o;
                    ExtensionAttachment attachment = (ExtensionAttachment)obj;
                    ato.addExtensionAttachment(attachment);
                } else {
                log.warn("Don't know how to handle externally generated object: " + obj);
            }
        }

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    protected void handleExtensionAttachments(List attachments) {
        if (attachments != null && attachments.size() > 0) {
            startElement("extension-attachments");
            Iterator i = attachments.iterator();
            while (i.hasNext()) {
                ExtensionAttachment attachment = (ExtensionAttachment)i.next();
                if (attachment instanceof XMLizable) {
                    try {
                        ((XMLizable)attachment).toSAX(this.handler);
                    } catch (SAXException e) {
                        log.error("Error while serializing Extension Attachment", e);

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        if (oDI instanceof BookmarkData) {
            renderBookmarkTree((BookmarkData) oDI);
        } else if (oDI instanceof DestinationData) {
            renderDestination((DestinationData) oDI);
        } else if (oDI instanceof OffDocumentExtensionAttachment) {
            ExtensionAttachment attachment = ((OffDocumentExtensionAttachment)oDI).getAttachment();
            if (extensionAttachments == null) {
                extensionAttachments = new java.util.ArrayList();
            }
            extensionAttachments.add(attachment);
        } else {

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            renderDestination((DestinationData) odi);
        } else if (odi instanceof BookmarkData) {
            // render Bookmark-Tree
            renderBookmarkTree((BookmarkData) odi);
        } else if (odi instanceof OffDocumentExtensionAttachment) {
            ExtensionAttachment attachment = ((OffDocumentExtensionAttachment)odi).getAttachment();
            if (XMPMetadata.CATEGORY.equals(attachment.getCategory())) {
                renderXMPMetadata((XMPMetadata)attachment);
            } else {
                try {
                    this.documentHandler.handleExtensionObject(attachment);
                } catch (IFException ife) {

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    private void processExtensionAttachments(AreaTreeObject area) throws IFException {
        if (area.hasExtensionAttachments()) {
            for (Iterator iter = area.getExtensionAttachments().iterator();
                iter.hasNext();) {
                ExtensionAttachment attachment = (ExtensionAttachment) iter.next();
                this.documentHandler.handleExtensionObject(attachment);
            }
        }
    }

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    /** {@inheritDoc}*/
    protected void addChildNode(FONode child) throws FOPException {
        if (child.getNameId() == FO_MARKER) {
            addMarker((Marker) child);
        } else {
            ExtensionAttachment attachment = child.getExtensionAttachment();
            if (attachment != null) {
                /* This removes the element from the normal children,
                 * so no layout manager is being created for them
                 * as they are only additional information.
                 */

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    }


    /** @see org.apache.fop.render.AbstractRenderer#processOffDocumentItem(OffDocumentItem) */
    public void processOffDocumentItem(OffDocumentItem oDI) {
        if (oDI instanceof OffDocumentExtensionAttachment) {
            ExtensionAttachment attachment = ((OffDocumentExtensionAttachment)oDI).getAttachment();
            if (extensionAttachments == null) {
                extensionAttachments = new java.util.ArrayList();
            }
            extensionAttachments.add(attachment);
        } else {

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    private void handleExtensionAttachments(List attachments) {
        if (attachments != null && attachments.size() > 0) {
            startElement("extension-attachments");
            Iterator i = attachments.iterator();
            while (i.hasNext()) {
                ExtensionAttachment attachment = (ExtensionAttachment)i.next();
                if (attachment instanceof XMLizable) {
                    try {
                        ((XMLizable)attachment).toSAX(this.handler);
                    } catch (SAXException e) {
                        log.error("Error while serializing Extension Attachment", e);

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Related Classes of org.apache.fop.fo.extensions.ExtensionAttachment

org.apache.fop.area.AreaTreeHandler

org.apache.fop.area.AreaTreeParser$Handler

org.apache.fop.fo.FObj

org.apache.fop.render.afp.AFPRenderer

org.apache.fop.render.intermediate.IFRenderer

org.apache.fop.render.pdf.PDFRenderer

org.apache.fop.render.ps.PSRenderer

org.apache.fop.render.xml.AbstractXMLRenderer

org.apache.fop.render.xml.XMLRenderer

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