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From "Werner Punz (JIRA)" <...@myfaces.apache.org>
Subject [jira] Commented: (MYFACES-2640) (JSF.js) Ajax Render component problem, replace with whole fragment not one element.
Date Mon, 03 May 2010 13:12:56 GMT

    [ https://issues.apache.org/jira/browse/MYFACES-2640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12863334#action_12863334
] 

Werner Punz commented on MYFACES-2640:
--------------------------------------

Ok the findHtmlItem has a bug.

But back to the general problem I have to probably revert the behavior, to the recommendation
of the expert group.
The reason simply is, that the spec clearly says, that the entire content has to be replaced,
some fixup code is not really possible here.

The "update" element enables DOM elements matching the "id"
attribute to be updated with the contents of this element.
Page 438

<xsd:complexType name="partial-response-updateType">
<xsd:annotation>
<xsd:documentation>
The "update" element enables DOM elements matching the "id"
attribute to be updated with the contents of this element.
</xsd:documentation>

Which means the entire content not just cherry picking something.
So I have to revert it to the original behavior without find html element.
The issue with cherry picking the way you want it is also this will not work consitently over
all browsers,
because you do not get a consistent eval behavior.

So my fix is, not to fix it but to put this into wontfix/invalid since the Expert Group is
clear in this area as well as 
the spec, everything has to be updated!

So all I can for now say is adjust simply your code to something like

<div id="clientId">
  <input id="clientId:secondIdentifier">
</div>

and you are on the save side for all cases and the future




> (JSF.js) Ajax Render component problem, replace with whole fragment not one element.
> ------------------------------------------------------------------------------------
>
>                 Key: MYFACES-2640
>                 URL: https://issues.apache.org/jira/browse/MYFACES-2640
>             Project: MyFaces Core
>          Issue Type: Bug
>          Components: JSR-314
>    Affects Versions: 2.0.0-beta-3
>         Environment: tomcat 6.0.20 java (mac os x )
>            Reporter: Mark Li
>   Original Estimate: 4h
>  Remaining Estimate: 4h
>
> after ajax submit, jsf.js will re-render some element depending on jsf.ajax.request({render:"
some elements "});
> but this js code will cause some problem.
> jsf.js:
> myfaces._impl._util._Utils.replaceHtmlItem = function (request, context, itemIdToReplace,
newTag, form) {
> ......
>                     var fragment = range.createContextualFragment(newTag);
>                     evalNode = item.parentNode.replaceChild(fragment, item)
> .....
> }
> sometime fragment will has more than one childNodes, or the childNode not has clientId,
but the childNode of childNode has clientId.
> this will cause html unstable.
> Please fix it.
> this is my suggestion:
> myfaces._impl._util._Utils.replaceHtmlItem = function (request, context, itemIdToReplace,
newTag, form) {
>            .............
>               Orginal:
>                     var fragment = range.createContextualFragment(newTag);
>                     evalNode = item.parentNode.replaceChild(fragment, item)
>               fix:
>                     var fragment = range.createContextualFragment(newTag);
>                     var replaceItem = myfaces._impl._util._Utils.findHtmlItemFromFragment(fragment,
itemIdToReplace);
>                     if(replaceItem == null)replaceItem = fragment;
>                     evalNode = item.parentNode.replaceChild(replaceItem, item)
>        ..................
> }
>     myfaces._impl._util._Utils.findHtmlItemFromFragment = function(fragment, itemId){
>     	if(fragment.childNodes == null)
>     		return null;
>     	for(var i = 0; i < fragment.childNodes.length ; i++ ){
>     		var c = fragment.childNodes[i];
>     		if(c.id == itemId)
>     			return c;
>     	}
>     	for(var i = 0; i < fragment.childNodes.length ; i++ ){
>     		var c = fragment.childNodes[i];
>     		var item = myfaces._impl._util._Utils.findHtmlItemFromFragment(c, itemId);
>     		if(item != null)
>     			return item;
>     	}
>     	return null;
>     };

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