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Max Katz heads Developer Relations for Appery.io, a cloud-based mobile app platform. He loves trying out new and cool REST APIs in mobile apps. Max is the author of two books “Practical RichFaces” (Apress 2008, 2011), and is a frequent speaker at developer conferences. You can find out what Max is up to on his blog: mkblog.exadel.com and Twitter: @maxkatz. Max is a DZone MVB and is not an employee of DZone and has posted 74 posts at DZone. You can read more from them at their website. View Full User Profile

Using JSF and Flex Components Together

09.16.2008
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Event handlers

Fiji components have event handlers such as onitemclick which are very similar to the standard DHTML event handlers such as onkeyup. Going back to our example, let's say we want to click on any bar and display the medal information outside the chart. When a bar is clicked, an AJAX request will be sent to the server, properties will be set, and then rerendered.

The changes to the managed bean are minimal. All we do is add three properties:

private String countrySelected;
private String medalTypeSelected;
private String medalCountSelected;

// getter and setters methods

Don't forget to generate getters and setters.

This is how our page now looks.

<h:form>
<fiji:columnChart id="goldMedals" value="#{medalsBean.medalsData}"
legendPosition="top"
barColors="#{medalsBean.colors}"
width="250" height="300">
<fiji:chartData type="name" value="#{medalsBean.names}" />
<a4j:support event="onitemclick" reRender="info">
<a4j:actionparam name="param1" value="event.x" assignTo="#{medalsBean.countrySelected}" noEscape="true"/>
<a4j:actionparam name="param2" value="event.y" assignTo="#{medalsBean.medalCountSelected}" noEscape="true"/>
<a4j:actionparam name="param3" value="event.name" assignTo="#{medalsBean.medalTypeSelected}" noEscape="true"/>
</a4j:support>
</fiji:columnChart>
</h:form>

<h:panelGrid id="info">
<h:outputText value="#{medalsBean2.countrySelected}"
style="text-decoration: underline;"/>
<h:outputText value="#{medalsBean2.medalTypeSelected}
#{medalsBean2.medalCountSelected}"/>
</h:panelGrid>

We use the most popular tag from RichFaces, <a4j:support> to attach an event (onitemclick) to the parent component, <fiji:columnChart>. When a bar is clicked on a chart, an Ajax request is sent to the server passing three arguments defined by the <a4j:actionparam> tag. The <a4j:actionparam> tag automatically takes the value from value attribute and assigns it to property defined in the assignTo attribute. The following three arguments are passed:

event.x – is the x-axis data. In our case, it is the country name
event.y – is the y-axis data. In our case, it is the medal count
event.name – is the the active bar. In our case, it will be the medal type selected

I have also set noEscape=”true” for each <a4j:actionparam>. This is necessary in order for the value to be treated as JavaScript code instead of being enclosed in single quotes and just passed to the server as a parameter.

Finally, we rerender the information inside the panel grid. As you can see, we are using standard RichFaces techniques to send and rerender information even though we are mixing in Flex components.

Published at DZone with permission of Max Katz, author and DZone MVB.

(Note: Opinions expressed in this article and its replies are the opinions of their respective authors and not those of DZone, Inc.)

Comments

Agata Przybyszewska replied on Mon, 2009/02/02 - 8:19pm

I have tried to follow the tutorial, and make Fiji work with Seam and Flex.

I have tried several approaches:
1) Followed the tutorial  here:
 Result - server crash from the helloworld on page 3 :-(

2) I tried to follow the tutorials advice that fiji is just a rich faces project - just copied the 2 files fiji-api.jar and fiji-ui.jar into the lib
folder of my HelloWorld Seam project, and added the following facelet:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:rich="http://richfaces.org/rich"
          xmlns:a4j="http://richfaces.org/a4j"
      xmlns:fiji="http://exadel.com/fiji">

        <rich:panel>
                <f:facet name="header">
                        Fiji
                </f:facet>
                Ready for Fiji...

                <fiji:swf src="hello.swf" width="400" height="400"
bgcolor="#EFEFEF"
                        application="HelloWorld"/>
        </rich:panel>
  </ui:composition>

The hello.swf file liest in the same folder as the facelet file.
This didn't crash the server. But the result is not what I wanted - no
Flash component.

 Any ideas what I do wrong?

Best,

Agata

Joe Greene replied on Tue, 2009/03/03 - 12:47pm

Max -

You give little guidance on how to update an amChart wrapped inside a fiji:swf component.  Looking at the amCharts docs, it looks like the data wants to be either csv or xml format.  If I want to use an am line chart wrapped in the fiji:swf component, I need to know how to bind the chart data to a bean instead of xml or csv data.  Can this be done?  If not, I think this is important and should be stated.

Max Katz replied on Mon, 2009/03/09 - 12:39pm in response to: Joe Greene

For anyone else looking for an answer, Joe posted it here

Santhosh Kumar replied on Wed, 2010/01/06 - 11:23am

your article on fiji chart was great..

I am using fiji line chart.. i need  a help on line chart..

i need to highlight the  y axis based on input given,,,,

for exampl if y-axis value is 45... i want to show highlihted y-axis region 40-50...

 

 

thanks in advance... 

Dani Holiday replied on Thu, 2010/02/18 - 4:30am

Hi! I saw that in RichFaces i have to read the data from the xml/csv. I bring the data from the database. if so, how can i integrate RichFaces + AMCharts + reading the data from the database and sending it to the bean? thanks!

Devika Nara replied on Fri, 2010/02/19 - 12:07am

is it possible to add the flex components dynamically to JSF page???

Design Geeks replied on Sat, 2010/02/27 - 12:51am

hi,

good example.

I have tried it with Netbeans 6.8 & glassfish 2.0 wirh jsf-richfaces

//jsp code

<%@taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@taglib uri="http://richfaces.org/rich" prefix="rich"%>

<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<%@taglib prefix="fiji" uri="http://exadel.com/fiji"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">

<f:view locale="#{skinBean.currentlang}">
    <html>
        <h:form>

            <fiji:stackedColumnChart   id="stackedColumnChart" value="#{oneSeriesBar.data}"
                                     title="Simple Stacked Column Chart" subtitle="Display Resolution Statistics"
                                     captionX="Years" captionY="Percent" legendCaption="Resolution"
                                     barColors="#{oneSeriesBar.colors}" width="400" height="400"
                                     rulersValuesHighlight="none">
                <fiji:chartData type="name" value="#{oneSeriesBar.names}" />
            </fiji:stackedColumnChart>
        </h:form>
    </body>
</html>
</f:view>

at runtime it gives xml error like Retrieved XML is invalid

 stacktrace

<ROOT XMLNS:FIJI='HTTP://WWW.EXADEL.COM/FIJI'>#b0343c<FIJI:BARCOLORS>#dd9f2c</FIJI:BARCOLORS><FIJI:BARCOLORS>#5db2c2</FIJI:BARCOLORS><FIJI:CAPTIONX>Years</FIJI:CAPTIONX><FIJI:CAPTIONY>Percent</FIJI:CAPTIONY><FIJI:LEGENDCAPTION>Resolution</FIJI:LEGENDCAPTION><FIJI:RULERSVALUESHIGHLIGHT>none</FIJI:RULERSVALUESHIGHLIGHT><FIJI:SUBTITLE>Display Resolution Statistics</FIJI:SUBTITLE><FIJI:TITLE>Simple Stacked Column Chart</FIJI:TITLE><FIJI:CHARTDATA><FIJI:SERIES><FIJI:DATA><FIJI:X>2006<FIJI:Y>17<FIJI:DATA><FIJI:X>2007<FIJI:Y>26<FIJI:DATA><FIJI:X>2008<FIJI:Y>38<FIJI:NAME>Higher<FIJI:SERIES><FIJI:DATA><FIJI:X>2006<FIJI:Y>57<FIJI:DATA><FIJI:X>2007<FIJI:Y>54<FIJI:DATA><FIJI:X>2008<FIJI:Y>48<FIJI:NAME>1024x768<FIJI:SERIES><FIJI:DATA><FIJI:X>2006<FIJI:Y>20<FIJI:DATA><FIJI:X>2007<FIJI:Y>14<FIJI:DATA><FIJI:X>2008<FIJI:Y>8<FIJI:NAME>800x600</ROOT>

any idea?

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