which event is fired after the action event? - jsf

I want to display the header of the modal popup with the value chatBean.selectedUser. The thing that happens is that onclick event is fired before action event so the page is not refreshed when the onclick event is fired. Hence I cannot get the header of modal pop up as the value contained in chatBean.selectedUser. Is there anyway that I can display the header of modal popup with the value chatbean.selectedUser after that the page is submitted?
Here is the relevant part of the view:
<h:form>
<p:selectOneMenu value="#{chatBean.selectedUser}" id="select">
<f:selectItems value="#{chatBean.friendList}" var="users" itemLabel="#{users.firstName}" itemValue="#{users.firstName}"/>
</p:selectOneMenu>
<p:commandButton id="basic" value="Basic" onclick="dlg.show()" type="button" action="#{chatBean.refresh}"></p:commandButton>
<p:dialog id="modalDialog" header="#{chatBean.selectedUser}" widgetVar="dlg" modal="true" height="100">
<h:outputText value="This is a Modal Dialog." />
<h:inputText></h:inputText>
</p:dialog>
</h:form>

You should show the dialog only when the action is completed, not before. Use the oncomplete attribute instead.
<p:commandButton ... oncomplete="dlg.show()" />
Don't forget to explicitly update the dialog's content before opening it. I don't see that anywhere in your code. Perhaps you're using RequestContext#update() or something, but normally you'd use update attribute for this.
<p:commandButton ... update="modelDialog" oncomplete="dlg.show()" />
Also, the type="button" is strange. This way the action wouldn't be invoked at all, but perhaps that's just a careless leftover of experimentation. Remove it.

Related

Disabling an a4j:commandButton after click

I have an a4j command button which displays a loader in a pop-up panel using a4j:status onstart and onstop events. After action method linked with a4j:commandButton is completed, I want the button to be displayed as disabled on the screen.
I have created a boolean variable in backing bean of disableBtn which gets set to true in action method of a4j commandButton. when I render the button, the pop-up containing the loader doesn;t disappear
<h:form>
<a4j:status id="waitingMessage"
onstart="#{rich:component('modalPanelId')}.show()"
onstop="#{rich:component('modalPanelId')}.hide()">
</a4j:status>
<rich:popupPanel id="modalPanelId" modal="true"
autosized="true">
<h:graphicImage library="images" name="loading.gif" />
</rich:popupPanel>
<rich:panel id="updatePanel">
<div>
<a4j:commandButton value="Confirm Action"
styleClass="btn right"
disabled="#{bean.disableBtn}"
actionListener="#{bean.confirmAction}"
execute="#this" render="updatePanel"
immediate="true" />
</div>
</rich:panel>
</h:form>
Pop-up panel with loader should disappear upon completion of action of a4j:commandButton and button should be rendered as disabled.
A source of action cannot disable itself (I don't recall if this is a JSF thing or just RichFaces). Once the action is finished you got to have another component disable and rerender the button in response, simple a4j:jsFunction should do. Something like:
<a4j:jsFunction name="setEnabled" render="button">
<a4j:param name="enabled" assignTo="#{bean.buttonEnabled}"/>
</a4j:jsFunction>
<a4j:commandButton … oncomplete="setEnabled(false)" />
It's possible to disable the element with pure JavaScript onclick handler:
<a4j:commandButton
onclick="setTimeout('document.getElementById(\'' + this.id + '\').disabled=true;', 50);"

Render rich:extendedDataTable

I need a rich:popup that shows a rich:extendedDataTable, and when the user presses a button, the popup should be shown, and the extendedDataTable must be re-rendered, here is the code:
<rich:popupPanel id="popupId" show="false" modal="true">
<h:form>
<rich:extendedDataTable
value="#{bean.list}"
var="item" rows="5" id="table">
<rich:column>
<h:outputLabel value="#{item}" />
</rich:column>
</rich:extendedDataTable>
<a4j:commandButton value="x" immediate="true"
oncomplete="#{rich:component('popupId')}.hide(); return false;"/>
</h:form>
</rich:popupPanel>
<h:form>
<a4j:commandButton value="show"
oncomplete="#{rich:component('popupId')}.show(); return false;"
render="table" immediate="true" />
</h:form>
The first time I press the show it works fine, but when I close the panel with the X button and press again the show button, the extendedDataTable appears empty (It's rendered but appear empty, see image below).
The problem is fixed if I add an empty extendedDataTable before the popup, like this:
<rich:extendedDataTable />
<rich:popupPanel>
...
With rich:dataTable the problem doesn't exits, but I need a extendedDataTable.
And aditional extrange behaviour is when I resize the browser, the data appears.
Platform
RichFaces: 4.2.2.Final
Spring: 3.1.1.RELEASE
Cheers
Use onclick instead of oncomplete. ExtendedDataTable doesn't render properly inside invisible elements (it's a bug) so the popupPanel has to be made visible before the rerendering.
I had kinda the same issue.
I solved it in a not 100% richface correct way:
<a4j:commandButton
value="show"
action="#{actionForm.setShowEditor('true')}"
oncomplete="javascript:location.reload(true)"/>
<a4j:region layout="block" rendered="#{actionForm.showEditor}" id="panelArea">
<rich:popupPanel id="#{popupID}" modal="true" show="true" domElementAttachment="parent">
....
tabel
buttons
....
</rich:popupPanel>
</a4j:region>
The popup is always shown (show="true") inside the a4j:region.
But the a4j:region is only shown if variable to show the popup = true.
The full page refresh was in my case needed because otherwise my ckeditor had some initialisation errors. It should also work if you only rerender the a4j:region after you set the "#{actionForm.setShowEditor('true')}.

Primefaces selectOneRadio ajax

I'm trying to display validation messages everytime the user clicks on a radio button.
This only works when I click on the submit button, but not when I click on the radio button:
<h:form id="form">
<p:panel id="panel">
<ui:repeat value="#{questionsBean}" var="question">
<h:panelGrid columns="3" style="margin-bottom:10px" cellpadding="5">
<h:outputText value="#{question.questionText}" />
<p:selectOneRadio id="question" value="#{question.response}"
validator="#{question.validate}" required="true">
<f:selectItem itemLabel="Yes" itemValue="Yes" />
<f:selectItem itemLabel="No" itemValue="No" />
<p:ajax update="msgQuestion" event="change"/>
</p:selectOneRadio>
<p:message for="question" id="msgQuestion" />
</h:panelGrid>
</ui:repeat>
<p:commandButton id="btn" value="Save" update="panel" partialSubmit="true"/>
</p:panel>
</h:form>
The HTML DOM change event is the wrong event when you want to listen on whether the radio button (or checkbox) is clicked. You should be using the click event for this.
The value of the radio button (and checkbox) basically never changes. It has always the same value. The question is more whether that value will be sent to the server side or not. This is determined by the "checked" state which is usually triggered by the DOM click event.
The actual behaviour of the change event on radiobuttons/checkboxes is dependent on the webbrowser used. The behaviour is particulary inconsistent in the IE browser. It not only depends on the version used, but also in the rendering mode used (quirks mode vs standards mode). Perhaps you were actually using IE while testing.
The default event type of the PrimeFaces <p:ajax> (and the standard JSF <f:ajax>), which is valueChange already automatically covers this:
<p:ajax update="msgQuestion" event="valueChange" />
This will autogenerate the right change event handler in text inputs and dropdowns and the click event handler in radiobuttons and checkboxes.
But as said, it's the default event type already. Just omit it altogether.
<p:ajax update="msgQuestion" />

dialog will not close primefaces

I have a dialog on one of my pages. It opens fine. It works fine if you use the button on the page, it closes. However, if you try and "x" out of the dialog it will not close. I believe it is related to the fact that I have an input field on the dialog, but I am not sure. I apologize if this is a dupe, I could not find a similar post.
<p:commandButton action="#{phoneListBean.debugger}"
value="Merge Unqiue" onclick="mdlg.show();"
update=":pmsg, :createNewPanel, :listform" />
<p:dialog id="mdialog" header="Merge Unqiue" widgetVar="mdlg"
appendToBody="true">
<h:form id="mform">
<h:panelGrid columns="2" cellpadding="5" id="m">
<h:outputLabel for="listName" value="Enter the List Name:" />
<p:inputText value="#{phoneListBean.mergeList.name}" id="listName" />
<p:commandButton action="#{phoneListBean.mergeUnique}"
value="Merge Unqiue" update=":pmsg, :listform"
onclick="mdlg.hide();" />
</h:panelGrid>
</h:form>
</p:dialog>
Thanks in advance for the help.
Your problem is that you don't want to use the onclick attribute with Primefaces buttons for displaying and hiding the dialogs. The click event may not get invoked before the postback because these buttons are not Ajax enabled.
Instead you should use oncomplete attribute. This will notify the Javascript event to execute only after the server postback has occurred, meaning that show() will display already updated dialog contents, and hide() will occur only after the server side execution has finished.

Primefaces how to update content in a dialog and keep the dialog centered?

I have a dialog that contains no content on page load and I'm dynamically setting the content of a dialog box based on the link that a user clicks on.
<p:dialog widgetVar="dlg" modal="true" id="dialog">
<p:panel id="fullArticle">
<h:outputText value="#{content.newsArticle}" escape="false" />
</p:panel>
</p:dialog>
...
...
<p:commandLink value="Read more" actionListener="#{content.getFullArticle}" onclick='dlg.show();' update=":fullArticle">
<f:attribute name="contentId" value="#{news.contentId}" />
</p:commandLink>
The problem i'm having is that when you click the "Read More" link, it shows the dialog, but the dialog is not centered on the page. If i change the udpate attribute on the commandLink to update=":dialog", the dialog flashes as if it's opening and then closing right away.
How can I update the dialog and have it be centered with dynamic content?
The onclick is executed before the ajax request. You need to open the dialog in oncomplete instead. This will be executed after the ajax request and update. The <p:dialog> is namely by default hidden unless its visible attribute evaluates true.
<p:commandLink value="Read more" actionListener="#{content.getFullArticle}"
update=":dialog" oncomplete="dlg.show()">
Unrelated to the concrete problem, are you aware that you can pass fullworthy objects as method arguments since EL 2.2? This makes the <f:attribute> and actionListener "hack" superfluous:
<p:commandLink value="Read more" action="#{content.getFullArticle(news)}"
update=":dialog" oncomplete="dlg.show()" />
I had the same problem.
Updating the dialog makes it disappear and reappear (and forget its position).
To solve it, I created a wrapper tag around the dialog content.
<p:commandLink update=":playerViewDialogHeader,:playerViewDialogContent"
oncomplete='playerViewDialogJS.show()' value='#{item.name}' />
<p:dialog id='playerViewDialog' widgetVar='playerViewDialogJS'>
<f:facet name="header">
<h:outputText id="playerViewDialogHeader" value="#{playerController.objectView.name}" />
</f:facet>
<h:form id='playerViewDialogContent'>
<!-- CONTENT GOES HERE -->
</h:form>
</p:dialog>

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