Develop Reference

To read JSF commandbutton action attribute value through javascript

Hi is there any way through which i can read JSF command button action attribute value.My command button statement is
<h:commandButton id="cmdBtn" value="GO" action="#{managedBean.submit}"onclick="javascriptfunction()"/>
action attribute is getting value from managed bean and command button is within a form.
below is my select menu
<h:selectOneMenu id="workspaceOptions"
value="#{workSpaceBean.selectedItem}" class="selectMenu">
<f:selectItem id="header" itemLabel="Select" itemValue="#{null}" />
<f:selectItem id="option1" itemLabel="Assignments" itemValue="assignment" />
<f:selectItem id="option2" itemLabel="Preview" itemValue="preview" />
<f:selectItem id="option3" itemLabel="Edit Coverage" itemValue="editCoverage" />
<f:selectItem id="option4" itemLabel="attachment" itemValue="attachment" />
</h:selectOneMenu>
<h:commandButton id="cmdBtn" value="GO" class="commandButton"
action="#{workSpaceBean.submit}" onclick="javascriptfunction()" />`
For the options editCoverage,attachment i would be getting multiple outcomes based on some conditions in the managed bean.All i want to do is open the outcome views of these in new window and for remaining options need to remain in same page.

Javabean validation error inside JSF/PrimeFaces dialog

Recently I have update my application to JSF 2.1.7 and PrimeFaces 3.4.2. When the below dialog is used for adding a new group, I get an "Name size must be between 1 and 40" validation error, prior to saving the new group. It happens when I click the picker's add button. I understand that this message is shown because the validation failed. The validation error doesn't appear when I add immediate=true to p:commandButton. I don't know what triggered the validation.
<h:form id="formg" prependId="false">
<!-- messages -->
<p:growl id="msgsg" showDetail="true" />
<!-- data table -->
<ui:include src="/WEB-INF/flows/groupsTable.xhtml" />
<p:separator />
<!-- bottom tool bar -->
<ui:include src="/WEB-INF/flows/groupsToolBar.xhtml" />
<!-- preview, edit dialog -->
<ui:include src="/WEB-INF/flows/groupsDialog.xhtml" />
</h:form>
<p:dialog id="dialogg" header="#{groupsBean.dialogTitle}"
widgetVar="groupsDialog" dynamic="true" resizable="false" width="800"
height="600" showEffect="fade" hideEffect="fade" modal="true">
<p:ajax event="close" listener="#{groupsBean.refresh}"
immediate="true" update=":formg" global="false" process="#this" />
<p:tabView id="tabPicker">
<p:tab title="General">
<h:panelGrid id="displayg" columns="2">
<h:outputText value="#Group name*:" />
<p:inputText value="#{groupsBean.selectedGroup.name}" size="40"
readonly="#{!groupsBean.updatable}" maxlength="40" />
</h:panelGrid>
</p:tab>
<p:tab title="Members">
<ui:include src="/WEB-INF/custom/picker.xhtml">
... some params passed to picker
</ui:include>
</p:tab>
</p:tabView>
</p:dialog>
The picker is similar to <p:password> and it is made up from two p:dataTable components and 4 buttons between them. The buttons are grouped together with a h:panelGrid. The button attributes are similar. Here is button sample code:
<p:outputPanel autoUpdate="true">
<p:commandButton actionListener="#{eval.evaluateAsMethod(pickerAdd)}"
update="source, target, #{messages}" immediate="true"
disabled="#{pickerSourceDisabled}"
icon="ui-icon ui-icon-arrowthick-1-s" />
</p:outputPanel>
source, target are the ids of the two datatables. pickerAdd is passed as param with a value of groupsBean.picker.add. The tables contain FooDomain objects.
public class FooDomain implements Serializable {
...
#NotNull
#Size(min = 1, max = 40)
#Column(name = "NAME")
private String name;
...
}

The PrimeFaces <p:commandButton> processes by default the entire form (as in, process="#form"), so it would by default trigger all validations. Your validation error is coming from the #Size restriction on the property. If you would like to process only the button's own action, then you should add process="#this".
<p:commandButton ... process="#this" />
The immediate="true" can also be used to solve it, but it behaves under the covers somewhat different: the entire form is still processed, but the action is invoked in APPLY_REQUEST_VALUES phase instead of INVOKE_ACTION phase. And only the input components which also have immediate="true" set will also be processed and others will be skipped.

Ajax and Request Scoped beans in JSF 1.2 and Rich Faces

I'm using JSF 1.2 and RichFaces 3.3, I have a page called NewsItemDetails with the following structure
<h:form>
<h:panelBar>
<h:panelBarItem>
<myTag:searchModule />
</h:panelBarItem>
</h:panelBar>
</h:form>
and the backing bean of that page is of a request scope, and here is a snippet of the faces-config.xml:
<managed-bean>
<managed-bean-name>newsItemDetails</managed-bean-name>
<managed-bean-class>class.location...</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
<managed-property>
<property-name>id</property-name>
<value>#{param['id']}</value>
</managed-property>
</managed-bean>
And to be complete here's a snippet of the searchModule tag:
<ui:composition>
<rich:tabPanel>
<rich:tab label="Images">
<h:panelGrid columns="2">
<h:inputText value="#{newsItemDetails.searchLabel}" />
<a4j:commandButton value="Search" actionListener="#{newsItemDetails.onSearch}" reRender="mediaItemsSearchResults, imagesDataTable" />
</h:panelGrid>
<a4j:outputPanel id="mediaItemsSearchResults" ajaxRendered="true">
<rich:dataTable id="imagesDataTable" value="#{newsItemDetails.searchResults}" var="image">
<h:column>
<h:outputText value="#{image.title}"/>
</h:column>
</rich:dataTable>
</a4j:outputPanel>
</rich:tab>
</rich:tabPanel>
</ui:composition>
Now the problem is, whenever I hit the search button, the action listener is never called,
but I could see a request sent to the server through Firebug. And here's the strange thing if I call the same searchModule tag, just outside the rich:panelBarItem and I hit the search button the action listener is called, but the dataTable is not re-rendered, and it's only called the first time I hit the button.
So if anyone has a clue why this is happening, I would be more than grateful.
Thanks in advance

I've figured out the answer, apparently the scope of the backing bean had to be set to session scope instead of request. Having done that everything works great.
So the entry in the faces-config.xml is:
<managed-bean>
<managed-bean-name>newsItemDetails</managed-bean-name>
<managed-bean-class>class.location...</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
And as you can see I had to remove the entry, and instead get it from the request object in the backing bean.
Thanks all.

JSF - Focus component that failed validation

I have a JSF 2.0 application using Primefaces 3.0M4 component library. I have the following input:
<p:inputText id="input" value="#{bean.value}" required="true">
<p:ajax event="blur" update="msg" />
</p:inputText>
<p:message id="msg" for="input" />
what I would like to do is that in case validation fails (the value is empty), focus returns to the component, forcing the user to enter a value. is this possible?
Also I would like that when user clicks the submit button; if validation fails there, the first component that did not pass the validation is focused.
Thanks,
Damian

It is possible, client-side, by using the required and requiredMessage attributes. The user can't submit the form and a error message is shown:
<h:outputLabel for="firstname" value="Firstname: *" />
<p:inputText id="firstname"
value="#{personBean.firstname}"
required="true" requiredMessage="You have to enter your name" label="Firstname">
<f:validateLength minimum="2" />
</p:inputText>
<p:message for="firstname" />
You could use primefaces message if you don't use requiredMessage attribute, because it will show you two warning messages and it's a bit strange...
For the focus it depends...what if you have two inputTexts? Do you want to show the focus only for the first one?
You can see a demo here: http://www.primefaces.org/showcase-labs/ui/pprAjaxStatusScript.jsf

Primefaces 3.0 : TreeNode and ContextMenu

In my application, I have a tree with various object types (sources, tables, etc).
I'd like to enable a context menu for the different types of object (add, delete, edit etc).
How can I use context menu on tree nodes in Primefaces ?

Never did it in practice (I am still on Primefaces 2.x), but from theory the facelet code should look something like this:
<h:form>
<p:tree value="#{myBean.tree}" var="node" id="tree"
selectionMode="single" selection="#{myBean.selectedNode}">
<p:treeNode>
<h:outputText value="#{node}" />
</p:treeNode>
</p:tree>
<p:contextMenu for="tree" id="menu">
<p:menuitem value="Add" actionListener="#{myBean.add}" />
...
</p:contextMenu>
</h:form>
Usage of p:contextMenu and p:tree is shown in Primefaces showcase.