Hi,
How are you creating new chart object ? For me every time user clicks on
submit-DrawChart_draw,action will create New chart object (e.g.
chart=ChartFactory.createBarChart) and store it in the session which
afterwards is used by DIV(DrawChart_display.action). You need to refresh
your chart object.
Leena
On Wed, Aug 6, 2008 at 11:36 AM, dynamicd <[EMAIL PROTECTED]> wrote:
> This is cool.. I tried it out. However once the
> chart_display.jsp is called the first time through the image tag. it does
> not call the DisplayChart.action again to refresh the image with a new one
> when clicked on the DrawChart.action. (I added the println statement in the
> display method to find out that the div is not refreshing) I have to log
> out and log in (invalidate session) to get the new chart. I am missing
> something
>
>
>
> public String display() throws Exception {
> System.out.println("I AM IN THE DISPLAY NOW ");
> Map attributes =
> ActionContext.getContext().getSession();
> this.chart = (JFreeChart) attributes.get("CHART");
>
> if(chart == null) {
> return Constants.FORWARD_INVALIDACTION;
> }
> return Constants.FORWARD_SUCCESS;
> }
>
>
> private void setChart(JFreeChart chart){
> Map attributes = ActionContext.getContext().getSession();
> attributes.put("CHART", null);
> this.chart = chart;
> attributes.put("CHART", this.chart);
> }
>
> public JFreeChart getChart() {
> return chart;
> }
>
>
>
> Leena Borle wrote:
> >
> > Hello,
> > See if this helps you.
> > I have a form with remote DIV which displays chart after user clicks on
> > submit.
> > Trick here is to generate chart object, store it in session and display
> it
> > in separate JSP. Remove the form part if you want to display just the
> > dynamic-DIV using Chart image.
> >
> > Form.jsp [
> > <s:form>
> > <s:url id="display_chart" value="DrawChart_draw.action"
> > namespace="/user" />
> >
> > <s:submit value="Draw chart" href="%{display_chart}"
> > theme="ajax" targets="*chart_div*" />
> > <br />
> > </s:form>
> >
> > <h4>Your Running Chart</h4>
> > <div id="*chart_div*">
> > </div> <!-- End display chart -->
> > </div>
> >
> > ]
> >
> >
> > display_chart.jsp [
> > <body>
> >
> > /MyApp/user/DrawChart_display.action
> > </body>
> >
> > ]
> >
> >
> > struts.xml[
> > <package name="user" extends
> > ="struts-default,jfreechart-default">
> > <!-- Separate method to draw and display due to Remote
> > DIV/Button tag contsraints.
> > -->
> > <action name="DrawChart_input" method="input"
> > class=".xxx.DrawChart">
> > <result name="input">form.jsp </result>
> > </action>
> >
> > <action name="DrawChart_draw" method="draw"
> > class="xxx..DrawChart">
> > <result name="success">/jsp/display_chart.jsp
> > </result>
> > </action>
> > <action name="DrawChart_display" method="display"
> > class="xxx.DrawChart">
> > <result name="success" type="chart">
> > 400
> > 300
> > </result>
> > </action>
> >
> > </package>
> > ]
> >
> >
> > DrawChart.java [
> > JFreeChart chart;
> > public String draw() throws Exception {
> > //chart creation logic.
> > //generate chart object
> > chart = ....
> > session = ....
> > session.put("CHART", chart);
> > return success;
> > }
> >
> > /**
> > * returns chart obejct from the session.
> > This methos is used by display_chart.jsp
> > */
> > public String display() throws Exception {
> > session = ...get session ...
> > this.chart = (JFreeChart) session.get("CHART");
> > if(chart == null) {
> > addActionError(getText("error.nochart"));
> > return ERROR;
> > }
> > return SUCCESS;
> > }
> >
> > // this method will get called if we specify chart
> > public JFreeChart getChart() {
> > return chart;
> > }
> >
> > /**
> > * <p> input action
> > */
> > public String input() throws Exception {
> > return INPUT;
> > }
> >
> > ]
> >
> >
> >
> > Leena
> >
> >
>
> --
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>
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