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POIceFaces duplicate entries in combos, menus after layout change
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  1. POIceFaces duplicate entries in combos, menus after layout change
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    copied!<p>My IceFaces 1.8 based application starts with a very simple xhtml that includes a different one based on a bean's property. This property is bound to a combo's item that is included in every page. If the user selects a layout from this combo, the page updates to the new layout.</p> <p>It is all ok, except that after every single page layout change, the items in the layout selector combo get duplicated, triplicated and so on.</p> <p>This is the "multiplexer" xhtml:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:ice="http://www.icesoft.com/icefaces/component"&gt; &lt;ui:include src="#{system.layout}"&gt; &lt;/ui:include&gt; &lt;/html&gt; </code></pre> <p>And this is the layout selector that is included into every layout xhtml:</p> <pre><code> &lt;ice:form id="layoutSelectForm"&gt; &lt;ice:outputLabel for="layoutSelector"&gt;#{msgs['LayoutSelect.Label']}: &lt;/ice:outputLabel&gt; &lt;ice:selectOneMenu id="layoutSelector" binding="#{layoutSelect.som}" value="#{layoutSelect.selectedLayout}" valueChangeListener="#{layoutSelect.processValueChange}" partialSubmit="true"&gt; &lt;f:selectItems value="#{layoutSelect.allLayouts}" /&gt; &lt;/ice:selectOneMenu &gt; &lt;/ice:form&gt; </code></pre> <p>Here is the code of the LayoutSelect backing bean:</p> <pre><code>public class JSFLayoutSelect implements InitializingBean, ValueChangeListener { private EventManager eventManager; private String mainApplFrmURL; private HtmlSelectOneMenu som; public List&lt;SelectItem&gt; allLayouts; private String selectedLayout; @Override public void processValueChange(ValueChangeEvent event) throws AbortProcessingException { eventManager.publish("layout-select/change", event.getNewValue()); logger.info("Layout changed event occured: " + event.getNewValue()); try { FacesContext.getCurrentInstance().getExternalContext().redirect(mainApplFrmURL); } catch (IOException e) { logger.error(e.getMessage()); } } @Override public void afterPropertiesSet() throws Exception { allLayouts = new ArrayList&lt;SelectItem&gt;(); allLayouts.add(new SelectItem("dev", "Core Dev")); allLayouts.add(new SelectItem("classic", "Core Classic")); allLayouts.add(new SelectItem("modern", "Core Modern")); selectedLayout = "dev"; } public List&lt;SelectItem&gt; getAllLayouts() { return allLayouts; } public String getSelectedLayout() { return selectedLayout; } /* some unimportant methods are not here */ } &lt;bean name="layoutSelect" class="hu.hgap.comp.impl.JSFLayoutSelect" scope="session"&gt; &lt;property name="eventManager" ref="SessionEventManager"/&gt; &lt;property name="mainApplFrmURL" value="/ICEFacesSpringDemoV2/secured/ApplFrm.faces" /&gt; &lt;/bean&gt; </code></pre> <p>Can you tell me what shall I do to avoid duplicating combo entries? I see that after changing the layout the very same combo gets rendered again and the combo items are pushed into it again from the server.</p>
 

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