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PrimeFaces panel crashes on update

I don't know if this is possible using only simple elements and JSF, but I have a panel that collapses in the View Entry. I can open a panel that has a checkbox that starts updating the panel.

The problem is that when the panel is updated by Ajax, the panel is reset again. But I want to keep the current open status of the Group. It should not close when updating. Is it possible?

I am using PF 3.2 and JSF2.1

<p:fieldset style="width:200px;height:300px;overflow:auto;">

        <h:outputLabel value="Available Applications"
    style="font-weight: bold;font-size: 14px;" />
                <br />
                <br />
                <h:panelGroup>

                    <ui:repeat var="category"
                        value="#{epsEditController.subscriptionCategoryVOs}">

                        <p:panel header="#{category.applicationCategory.name}"
                            id="panell" toggleable="true" closable="false" toggleSpeed="500"
                            collapsed="true"
                            widgetVar="panel_#{category.applicationCategory.name}">

                            <h:panelGrid columns="2" border="0">
                                <h:outputLabel value="Select all"
                                    style="font-weight: bold;float:left;" />
                                <p:selectBooleanCheckbox value="#{category.allSelected}">
                                    <p:ajax event="change"
                                        listener="#{epsEditController.selectionChanged(category)}"
                                        update="panell" />
                                </p:selectBooleanCheckbox>
                            </h:panelGrid>

                            <ui:repeat var="subcat"
                                value="#{category.applicationSubcategoryVOs}">

                                <p:selectBooleanCheckbox value="#{subcat.selected}"
                                    title="#{subcat.applicationSubcategory.name}"
                                    itemLabel="#{subcat.applicationSubcategory.name}" />

                </ui:repeat>

                </p:panel>
            </ui:repeat>
        </h:panelGroup>
    </p:fieldset>
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1 answer

The reason the panel was minimized after each update was due to the use of static collapsed="true"on the panel. This can be fixed in one of two ways.

  • Just refresh the contents of the panel, not the panel
  • ajax collapsed

, . , .

                <p:panel header="#{category.applicationCategory.name}" id="panell"
                    toggleable="true" closable="false" toggleSpeed="500"
                    collapsed="true"
                    widgetVar="panel_#{category.applicationCategory.name}">

                    <h:form id="epsAppForm">

                        <h:panelGrid columns="2" border="0">
                            <h:outputLabel value="Select all"
                                style="font-weight: bold;float:left;" />
                            <p:selectBooleanCheckbox value="#{category.allSelected}">
                                <p:ajax event="change"
                                    listener="#{epsEditController.selectionChanged(category)}"
                                    update="@form" />
                            </p:selectBooleanCheckbox>
                        </h:panelGrid>

                       ........
                    </h:form>
                </p:panel>

EL

EL collapsed collapsed="true". -

collapsed="#{myBean.toggleStates[category.applicationCategory]}"

ajax

<p:ajax event="toggle" listener="#{myBean.toggleState(category.applicationCategory)" />

... myBean:

Map<ApplicationCategory, boolean> toggleStates = new HashMap<>();

... prepopulate toggleStates on @init or something

public void toggleState(ApplicationCategory myCategory) {
    toggleStates.put(myCategory, !(toggleStates.get(myCategory));
}
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