I have a small JSF application where the user is required to enter some data about themselves.
For each component on the page that has required="true" I want to show an icon depending if there is data in the field or not.
My problem is that when the page is initially shown all fields are valid, even if they do not have any data in them.
So my question is how I can set a component to be invalid based on if there is data in the field or not?
After a submit of the page (or after the component loses focus) the icon is shown properly, it is only on the initial page load I have a problem. (i.e there is no post data)
Here is my xhtml for a component that needs to be validated:
<s:decorate id="employeeIdDecoration" template="/general/util/errorStyle.xhtml">
<ui:define name="label">#{messages['userdetails.employeeId']}</ui:define>
<h:inputText value="#{authenticator.user.employeeId}" required="true">
<a4j:support event="onblur" reRender="employeeIdDecoration" bypassUpdates="true"/>
</h:inputText>
the template:
<s:label styleClass="#{invalid?'error':''}">
<ui:insert name="label"/>
<s:span styleClass="required" rendered="#{required}">*</s:span>
</s:label>
<span class="#{invalid?'error':''}">
<s:validateAll>
<ui:insert/>
</s:validateAll>
<h:graphicImage value="/resources/redx.png" rendered="#{invalid}"
height="16"
width="16"
style="vertical-align:middle;"/>
<h:graphicImage value="/resources/Checkmark.png" rendered="#{!invalid}"
height="16"
width="16"
style="vertical-align:middle;"/>
</span>
Any help will be appreciated.
You can:
on window.onload() iterate all inputs with javascript and trigger the blur event
on window.onload() call <a4j:jsFunction> which reRenders a parent <h:panelGroup> to all the inputs.
Related
How to show some content inside light-box of primefaces as I have to show some information about the image as no. of likes,no. of comments,and also have to provide option to post comments so on and so forth?
On xhtml page I have written this:
<p:lightBox styleClass="imagebox">
<c:forEach var="event1" items="#{event.files}" varStatus="cnt">
<h:outputLink value="#{listOfFilesForEventBean.getImage854By480ProfileUrl(event1)}" title="#{event1.location.locationName}">
<h:graphicImage value="#{listOfFilesForEventBean.getImageIconProfileUrl(event1)}"/>
</h:outputLink>
</c:forEach>
</p:lightBox>
Where files is list of image profiles that I am iterating.
And I want along with the image which is displayed on lightbox some information about the image should be displayed.
I had similar problem. If somebody is still looking for the answer here is my solution.
I did not find easy way to have some additional controls inside p:lightBox item.
Guess it assigns own JavaScript handlers to all its children and that makes a problem.
Also I had the problems with using commandButton inside ui:repeat. So I'm using my own implementation of p:lightBox and p:remoteCommand to call other actions(like post comments, delete image etc). Something like that:
<p:remoteCommand name="deleteImage" update="imagesGrid"
actionListener="#{imageBean.deleteImage}" />
<h:panelGroup id="imagesGrid">
<ui:repeat var="item" value="#{imageBean.list}">
<div class="docThumbContainer">
<div class="docPlaceholder"></div>
<div class="docThumbImage">
<h:outputLink value="/images?id=#{item.imageId}">
<h:graphicImage value="data:image/jpg;base64,#{item.thumbnail}"
alt="" />
</h:outputLink>
</div>
<div class="docThumbButtons">
<p:commandButton type="button" value="Delete"
onclick="deleteImage([{name:'imageId', value:#{item.imageId}}]);" />
</div>
</div>
</ui:repeat>
</h:panelGroup>
ImageBean:
public void deleteImage(ActionEvent event) {
ImageManager manager = getManager();
manager.deleteImage(StringUtil.parseInt(getUrlParameter("imageId"), -1));
}
Of course it is simplified replacement for p:lightBox. To show the full image in the overlay with prev/next buttons you need additional work. E.g. using p:dialog etc
Today, i was solving a small problem in JSF. Actually, i have an InputText on my xhtml page with readyOnly attribute set to true.Requirement was on click of a boolean checkbox, i should make the input text editable, means readyOnly false. The code somewhat seemed like this.
<div class="div-form-col" >
<h:outputLabel value="#{msgs.violationAmount} " for="violationAmt" />
<h:inputText value="#{outpassMBean.violationWebDTO.violationAmount}" id="violationAmt" readonly="true"/>
</div>
<div class="div-form-row">
<div class="div-form-col">
<h:outputLabel value="#{msgs.violationExemptionApplicable} " for="violationExempted" />
<h:selectBooleanCheckbox value="#{outpassMBean.violationWebDTO.violationExemptionApplicable}" id="violationExempted" onchange="makeViolationAmountEditable(this);">
</h:selectBooleanCheckbox>
</div>
</div>
The script of that method was given as below :-
function makeViolationAmountEditable(id){
alert("Ben");
document.getElementById('violationAmt' ).readOnly=false;
alert("Done");
}
Now my first problem was, if i am editing the value in the text field, how i can update the value of violationAmt in backing bean. What can be the best possible way? As i am using PrimeFaces, i came across concept remoteCommand. So here is what i added.
<p:remoteCommand name="makeViolationAmountEditableOnServer" action="#{outpassMBean.makeViolationAmountEditable}" update="amountPanelApplicant"/>
The method at the backing bean level was something like this
public void makeViolationAmountEditable(){
//Set updated value
setUpdatedViolationAmount(violationWebDTO.getViolationAmount());
//Some other code.
}
Problem was that, whenever this code was running, the violation amount in violationWebDTO was the old one, not the one which i was entering after making the input field editable. Though i saw in firebug the updated value was part of request but in the backing bean, however still old value was getting referred. I don't understand why?
My senior told me, you are updating value of readOnly on client side not server side, and updated my code something like this.
<p:outputPanel id="amountPanelApplicant">
<p:outputPanel rendered="#{outpassMBean.violationWebDTO.violationForCmb eq 2 and outpassMBean.violationWebDTO.isViolationExists}">
<p:outputPanel styleClass="div-form twoCol">
<div class="div-form-row">
<div class="div-form-col" >
<h:outputLabel value="#{msgs.violationAmount} " for="violationAmt" />
<h:inputText value="#{outpassMBean.violationWebDTO.violationAmount}" id="violationAmt" readonly="#{outpassMBean.violationAmtEditable}">
</h:inputText>
</div>
<div class="div-form-col">
<h:outputLabel value="#{msgs.outPayTot} " for="totalViolationAmount" />
<h:outputLabel styleClass="readOnly" value="#{outpassMBean.violationWebDTO.totalViolationAmount}" id="totalViolationAmount" />
</div>
</div>
</p:outputPanel>
<p:outputPanel styleClass="div-form twoCol" rendered="#{outpassMBean.outpassApplication.applicationSubType.id eq 2 }" >
<div class="div-form-row">
<div class="div-form-col">
<h:outputLabel value="#{msgs.violationExemptionApplicable} " for="violationExempted" />
<h:selectBooleanCheckbox value="#{outpassMBean.violationWebDTO.violationExemptionApplicable}" id="violationExempted" onchange="makeViolationAmountEditableOnServer();">
</h:selectBooleanCheckbox>
<p:remoteCommand name="makeViolationAmountEditableOnServer" action="#{outpassMBean.makeViolationAmountEditable}" update="amountPanelApplicant"/>
</div>
</div>
</p:outputPanel>
</p:outputPanel>
public void makeViolationAmountEditable(){
if(logger.isDebugEnabled()){
logger.debug("Inside makeViolationAmountEditable...");
}
//setting violation amount editable flag
setViolationAmtEditable(false);
//Preserving original and total amount.
setOriginalViolationAmt(violationWebDTO.getViolationAmount());
setOriginalTotalViolationAmount(violationWebDTO.getTotalViolationAmount());
}
In the above updated code, no javascript called. The readyOnly value is set to true and false from the backing bean itself. After this update, basically the new edited value was updated in the violationWebDTO.
Can someone explain? Why not in the first snapshot? It's not a complete code but i tried to explain the confusion. Any pointers would be helpful.
This is JSF's safeguard against tampered/hacked requests wherein the enduser uses client side languages/tools like HTML or JS to manipulate the HTML DOM tree and/or HTTP request parameters in such way that the outcome of JSF's disabled, readonly or even rendered attribute is altered.
Imagine what would happen if the JSF developer checked an user's role in such a boolean attribute against the admin role like so disabled="#{not user.hasRole('ADMIN')}" and a hacker manipulated it in such way that it isn't disabled anymore for non-admin users. That's exactly why you can only change the mentioned attributes (and the required attribute and all converters, validators, event listeners, etc) on the server side.
This can however be solved in a simpler manner without the need for an additional property, without the <p:remoteCommand> and the additional bean method.
<h:inputText id="violationAmount" ... readonly="#{makeViolationAmountEditable.value}" />
...
<h:selectBooleanCheckbox binding="#{makeViolationAmountEditable}">
<f:ajax render="violationAmount" />
</h:selectBooleanCheckbox>
See also:
Why JSF saves the state of UI components on server?
How does the 'binding' attribute work in JSF? When and how should it be used?.
I have the following code
<a4j:status id="commonstatus" onstart="#{rich:component('loading')}.show();" onstop="#{rich:component('loading')}.hide();" />
<rich:dataTable id="dTable" reRender="ds">
<rich:column id="name" filterMethod="#{myBean.filterName}">
...
<h:inputText> <a4j:support event="onkeyup" reRender="dTable, ds" ignoreDupResponses="true" requestDelay="700" oncomplete="setCaretToEnd(event);" /> </h:inputText>
...
<rich:datascroller id="ds" reRender="dTable">
...
<a4j:support event="onchange" reRender="dtable, ds" status="commonstatus" />
...
</rich:dataTable>
<rich:modalPanel id="loading" moveable="false" autosized="true">
<h:panelGrid columns="2">
<h:graphicImage value="images/progress.gif"/>
<h:outputText value="Loading..."/>
</h:panelGrid>
</rich:modalPanel>
Problem: Even if I have not specified status="commonstatus" in <h:inputText> I still get the loading image for onkeyup event.
What am I missing here?
Any help would be great.
The <a4j:status> by default applies for all the components in the page that fire an ajax request. However, you can restrict the components that will be caught using the for attribute as stated in the tag component documentation:
for: ID of the AjaxContainer component whose status is indicated (in the format of a javax.faces.UIComopnent.findComponent() call).
You can wrap h:inputText by an a4j:region
or
Set status attribute of the a4j:support to a not existing status id (e.g. status="none")
It's probably a little deprecated, but might be useful if anyone still works with Richfaces 3.3... I defined 2 status components in the common facelet template. One is the main status that is used across application whenever an ajax event fires and it applies to the whole page, and one is "none" status that does nothing (and it must be wrapped in region):
<a4j:status id="main" onstart="(something)" onstop="(something else)" />
<a4j:region>
<a4j:status id="none" onstart="" onstop="" />
</a4j:region>
Whenever I don't want main status to appear, I specify "none" status as Andrey suggested, but the status component actually exists so the warning about non-existing component is avoided.
Don't forget to wrap it in a4j:region, or it won't work correctly - if you have 2 status components in the same region, I think that always the second one will be used, no matter what you put in status tag of your component which fires the request...
i have a form with some inputs that have validation (required=true)
and when i click on the cancel button in case of validation error, the cancel button doesn't navigate to previous page, instead it removes the validation error (i think it goes back one step that was before the validation error ?)
here's my code:
<h:form>
<h:inputText value="#{myBean.nickName}" id="nickname" required="true"
requiredMessage="nickname should be specified" />
<h:commandLink immediate="true" id="cancel_link" onclick="history.back(); return false" style="float: left;margin: 118px 189px 0 0;">
<h:graphicImage width="90" height="28" value="#{resource['images:blu_btnCancel.png']}" />
</h:commandLink>
</h:form>
please advise how to fix that.
The JavaScript history.back() function takes you to the previous synchronous request, not to the previous view as you seemed to expect.
Even though the history.back() is terrible this way (unreliable, hackable, etc), a quick fix would be to send an ajax request on form submit instead of a synchronous request.
<h:form>
...
<h:commandButton value="submit">
<f:ajax execute="#form" render="#form" />
</h:commandButton>
</h:form>
Ajax requests doesn't account as browser history.
A more robust way is to just pass the identifier of the previous view along during navigation and then use <h:link> to link back to it. E.g.
<h:link value="Go to next view" outcome="nextview">
<f:param name="from" value="#{view.viewId}" />
<h:link>
And then in the nextview.xhtml
<f:metadata>
<f:viewParam name="from" />
</f:metadata>
...
<h:link ... outcome="#{from}" rendered="#{not empty from}">
<h:graphicImage ... />
</h:link>
If you're navigating by POST, you might consider using the flash scope to remember the initial view.
Unrelated to the concrete problem, the proper way to use <h:graphicImage> with JSF2 resources is to just use its name attribute instead of its value attribute with a #{resource} which is plain clumsy.
Replace
<h:graphicImage width="90" height="28" value="#{resource['images:blu_btnCancel.png']}" />
by
<h:graphicImage name="images/blu_btnCancel.png" width="90" height="28" />
Note that the library name images is here just replaced by the path name. The usage of the name "images" as library name is highly questionable. See also What is the JSF resource library for and how should it be used?
I have created a page with primefaces where I use the Lightbox component.
I use it in a dynamic matter as I create tumbnails on the fly with a servlet call.
The first page shows up nice and the lightbox works as expected but when I load a new set of pictures for the next page the pictures are shown but when you click on it, it just shows the original picture in a new page, when I then return with the previous button and click on a a thumbnail it works as expected.
This is the jsf code:
<h:outputLabel id="curpage" value="#{pictureBean.currentPage}" />
<h:commandButton value="next" action="#{pictureBean.nextPage}" id="next">
<f:ajax render="lightBox curpage" />
</h:commandButton>
<br/>
<p:lightBox height="500px" id="lightBox">
<ui:repeat value="#{pictureBean.pictures}" var="pic">
<h:outputLink value="#{pic.url}" title="#{pic.description}">
<h:graphicImage value="#{pic.urlThumb}" style="width:100px;height:75px;"/>
</h:outputLink>
</ui:repeat>
</p:lightBox>
I fixed it myself :-) I was forgotten to add the tags between form tags.