Re: [seam-dev] Exporting datatables
On 7 Aug 2008, at 10:17, Nicklas Karlsson wrote:
Hi,
While looking for css parsing for the excel-export of datatables, I
recalled running into https://xhtmlrenderer.dev.java.net/ before. What
it essentially
does is parses xhtml and converts it to pdf/image/svg, taking
stylesheets etc into account.
Does anyone here have any insight on if it would be possible in JSF
to, given a component id, dig it out, render it to a temporary
document, strip
out the other components from the body with exception of the component
to export and its parents (preserving stylesheet info), make sure it's
xhtml compliant
(through TagSoup or some other library), convert it to the target
format (through the xhtmlrenderer) and hanging the result on the
DocumentStore?
To manually render the document to a String you can do:
1) Get hold it - Component = findComponent(id)
2) Swap out the responseWriter for a wrapped StringWriter
3) Call JSF.renderChild(facesContext, cmp)
4) Restore the responseWriter
5) Get the String from the string writer is the rendered body of your
component
I don't quite follow what you are doing in the second half of your
sentence, but you can always remove a component from the tree by doing
cmp.getParent().getChildren().remove(cmp); cmp.setParent(null);
It could be handy to make in-application screenshots (targetting the
root) to pdf/image or just to target a component (datatable) to
export(?)
---
Nik
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