Re: [xmlc] Headers and footers

Hello Eric,

I am currently using a dynamic header and footer.  My approach is a 
little different but perhaps it will work for you.  I'm using a custom 
framework but the premise is the same.  All the pages in our site are 
passed to a handler that inspects the XMLObject for a particular div in 
this case <div id="header">.  Sort of a "post processor" for the view 
where content that is the same across all pages gets added.  Hope this 
helps.



class RenderView{
   // object that contains getters for the request and response.
   private HttpComs httpCom;
...
   public XMLCFactory getFactory(){
      
       XMLCFactory factory = 
XMLCContext.getContext(httpCom.getServlet()).getXMLCFactory();
       return factory;
   }


public void drawheader(XMLObject returnHtml){

       // Get the page containing the header and footer.
       headerFooterHTML headerFooter 
=(headerFooterHTML)this.getFactory().create(headerFooterHTML.class);

...
Update the header content
...


       // Get the node in the return html where I want to insert the 
header. Import the header node
      // from the headerFooter.  Append the node to the <div 
id="header"> element.
       Node node = returnHtml.getElementById("header");
       if(node != null){
           Node headerNode = 
returnHtml.importNode(headerFooter.getElementHeader(),true);
           node.appendChild(headerNode);
       }

    
           XMLCContext xmlc = XMLCContext.getContext(httpCom.getServlet());
           OutputOptions outo = 
xmlc.createOutputOptions(httpCom.getRequest(), 
httpCom.getResponse(),returnHtml);
           outo.setPrettyPrinting(true);
           xmlc.writeDOM(httpCom.getRequest(), httpCom.getResponse(), 
outo ,returnHtml);

}
}

Best regards

James Rochford
jrochford@xxxxxxxxx


Erik Rasmussen wrote:

> I can only think of two ways to achieve common headers
> and footers on a web page generated with XMLC, and
> neither works:
>
> 1) The built-in SSI mechanism.  This will load in a
> header.html and footer.html into the top and bottom of
> your web page wherever you put the SSI directives
> BEFORE running the XMLC interface generation.  So lets
> say I have index.html and products.html, and I have a
> <span id="siteName">site</span> in my header.html that
> both index.html and products.html include.  So I'll
> get interfaces indexHTML and productsHTML, both of
> which will have a method setTextSiteName().  But
> because they don't extend a common interface with that
> method, my code to set the site name has to use
> reflection to call the setTextSiteName() method.  That
> sucks.
>
> 2) DOM import.  Say I make a file called template.html
> that contains my header and footer information in it,
> and has a <div id="content"> in the middle of it where
> I want my page content to go.  I can set my dynamic
> header content with my templateHTML interface, and I
> can set my dynamic page content with my productsHTML
> interface.  And then I can say:
>
> Element contentDiv =
> templateXmlObj.getElementContent();
> Node migratedContent =
> contentDiv.getDocument().importNode(productsXmlObj,
> true);
> contentDiv.appendChild(migratedContent);
>
> ...and then just write the templateXmlObj to the
> response with the content from the products page
> inserted.  Right?  Wrong.  Line 2 above throws a:
> org.w3c.dom.DOMException: Node type being imported is
> not supported
>        at
> org.enhydra.apache.xerces.dom.CoreDocumentImpl.importNode(CoreDocumentImpl.java:1049)
>        at
> org.enhydra.apache.xerces.dom.CoreDocumentImpl.importNode(CoreDocumentImpl.java:860)
>
> So wtf?  Surely someone has succeeded in creating a
> webapp based on XMLC with common (and dynamic!) header
> and footer code.  What am I missing?  Is there another
> way?
>
> Thanks,
> Erik
>
>
>                 
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