Paul Spencer-3 wrote:
>
> Mjovanov,
> I just have time for short answers. You will need to do the research.
>
> 1) Media specific CSS Classes may be the answer. This way the user
> prints from the browser without the need of a "Printable Format" page.
>
> 2) Shale Dialogs. http://shale.apache.org.
>
>
> Paul Spencer
>
>
>
> mjovanov wrote:
>> Hello,
>>
>> Please consider the following scenario: a page with a dataTable component
>> and a backing bean with two DataModel properties, one for the rows
>> (binding
>> to the 'value' attribute of the dataTable) and one for columns (binding
>> to
>> the 'value' attribute of the nested t:columns tag). The backing bean is
>> configured in faces-config.xml to 'request' scope, but is being
>> serialized
>> between requests by using the t:saveState tag (so that paging for example
>> would not require additional hits to the database). So far everything is
>> working as expected. However, problems arise when I try to implement a
>> link
>> on the page that allows a user to open the table in a new window, and
>> without paging (for printing purposes). The catch is that I want to be
>> able
>> to still use the same backing bean so that the data doesn’t have to be
>> retrieved again, and also so that the sort would be preserved. Could
>> anyone
>> suggest the approach to take? I tried the following:
>>
>> Define a commandLink component and bind it to an action method on the
>> backing bean, like this:
>>
>> <h:outputLink value="searchView.faces" target="_blank"
>> class="linkCaption" rendered="#{workbenchForm.dataFound}">
>> <t:graphicImage url="images/printer_icon.gif"
>> alt="#{msg.labelPrintQueueSumm}" width="21" height="14" />
>> <h:outputText value="#{msg.labelPrintQueueSumm}"/>
>> </h:outputLink><br/>
>>
>> The body of the action method would then look like something like this:
>>
>> public void forwardToPrintView() throws IOException, ServletException {
>> HttpServletRequest request = (HttpServletRequest)getRequest();
>> HttpServletResponse response = (HttpServletResponse)getResponse();
>> request.setAttribute("rows", rows.getWrappedData());
>> request.setAttribute("columns", columns.getWrappedData());
>>
>> request.getRequestDispatcher("/workbenchPrint.faces").forward(request,
>> response);
>> getFacesContext().responseComplete();
>> }
>>
>> However this only works one time; after that I start seeing some really
>> weird behavior, like all links on the original page that were previously
>> working correctly start opening content in a new window?! At first I
>> though
>> there may be a problem with the target=”_blank” attribute, but when I
>> switched the commandLink component to an outputLink and had it point to
>> another page all together (without accessing the serialized backing bean)
>> the problem went away; could it be that the JSF state some how got
>> corrupted? Any suggestions/clues would be greatly appreciated.
>>
>> PS I was able to get very similar functionality to work for "Exporting
>> to
>> Excel"; the action method for this looks like this:
>>
>> public void exportHtmlTableToExcel() throws IOException{
>>
>> /*Set the filename
>> DateTime dt = new DateTime();
>> DateTimeFormatter fmt =
>> DateTimeFormat.forPattern("yyyy-MM-dd_HHmmss");
>> String filename = dt.toString(fmt) + ".xls";*/
>>
>> //Setup the output
>> String contentType = "application/vnd.ms-excel";
>> FacesContext fc = FacesContext.getCurrentInstance();
>> String filename =
>> fc.getExternalContext().getUserPrincipal().getName()
>> + "-"+ System.currentTimeMillis() + ".xls";
>> HttpServletResponse response =
>> (HttpServletResponse)fc.getExternalContext().getResponse();
>> response.setHeader("Content-disposition", "attachment; filename=" +
>> filename);
>> response.setContentType(contentType);
>>
>> //Write the table back out
>> PrintWriter out = response.getWriter();
>> //First write column headings
>> List columnList = (List)columns.getWrappedData();
>> for (Iterator it = columnList.iterator(); it.hasNext(); ) {
>> out.print(((TableColumnDTO)it.next()).getLabel() + "\t");
>> }
>> out.println();
>> List data = (List)rows.getWrappedData();
>> for (Iterator i = data.iterator(); i.hasNext(); ) {
>> List row = (List)i.next();
>> for (Iterator j = row.iterator(); j.hasNext(); ) {
>> Object value = j.next();
>> out.print((value != null ? value : "") + "\t");
>> }
>> out.println();
>> }
>> out.close();
>> fc.responseComplete();
>> }
>>
>> One important difference to note is that the link for "Exporting to
>> Excel"
>> does not have the target attribute set to '_blank' (since the content
>> type
>> would force another application to handle it, thus opening it in a new
>> window automatically).
>
>
>
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