ReRender paint2D component on onchange event of selectOneMenu

[qaelbdj]

I have the following code (simplified):

<a4j:region id="previewRegion">

    <h:panelGroup id="divPreviewContainer" styleClass="preview">               

        <h:panelGroup styleClass="jScrollPaneContainer">

            <rich:paint2D id="pregPainter" cacheable="true" format="png" paint="#{paintBean.paint}" data="#{paintDataBean}">

            </rich:paint2D>

        </h:panelGroup> 

        <h:panelGrid>

                <h:selectOneMenu value="#{confQuest.type}" converter="entConverter">

                    <f:attribute name="list" value="#{confQuest.version.supportedTypes}" />

                    <f:selectItems value="#{confQuest.version.supportedTypes}" />

                    <a4j:support event="onchange"   actionListener="#{confQuest.selectType}"   reRender="previewRegion" />

                </h:selectOneMenu>

            </h:panelGrid>

    </h:panelGroup>

</a4j:region>

When I change the selected item of the selectonemenu, the acrionListener's event is executing correctly, but the reRender's event isn't. The paint event of the paint2D element is not executing.

What could be happening?

Thank you

[almar]

Try reRendering the paint2D tag directly instead of using a4j:region (in otherwords use reRender=”pregPainter”).

I have similar code. Directly reRendering paint2D works, trying it with a a4j:region also fails on my end (haven’t tried to figure out why).

~ Almar

[nbelaevski]

Hi Tony,

You have cacheable=true, so browser caches image data. You should have different values of 'data' attribute for different image types in that case.

[qaelbdj]

I tried rendering the paint2D directly and having cacheable=false and none of them worked

[ilya40umov]

Hi Tony,

Try the following:

/** Generates Random Text for displaying on the image */

    public String getRandomString() {

        UUID uuid = UUID.randomUUID();

        return uuid.toString();

    }

data="#{testBean.randomString}" for rich:paint2D