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https://issues.apache.org/jira/browse/MYFACES-3881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13971488#comment-13971488
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Leonardo Uribe commented on MYFACES-3881:
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I have been thinking about different possibilities:
1. An special mode like "url-redirect" that by default make all views to be
redirected with the window id from server side.
2. Add a new param to url mode.
The problem with the url-redirect is precisely what makes it useful: it checks
all existing views and if they don't have the client-window id, it appends the
client window and force a redirect. But what happen if the view does not
require the client window id to work?. Since the typical case is almost all
your views in your application requires the client window id, it has sense a
parameter that exclude some views to be redirected. In other modes this doesn't
have sense, so it seems to me that a new mode with the param is what we need to
do.
Client Window api is flexible enough to include the solution in a separate jar,
but it is easier to do it inside core, because after all it is just extend the
default url mode and add the missing lines.
> CLIENT_WINDOW_MODE generates new windowid even if one exists
> ------------------------------------------------------------
>
> Key: MYFACES-3881
> URL: https://issues.apache.org/jira/browse/MYFACES-3881
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 2.2.2
> Environment: java 7, tomcat 7.0.50
> Reporter: Rene O
> Attachments: jsftest22.zip, jsftest22_new.zip
>
>
> If you use @ViewScoped beans and activate CLIENT_WINDOW_MODE (url or client)
> a page refresh generates a new windowid although the application in the
> current browser window already has a windowid.
> I think a new windowid should only be generated, if no windowid exists, e.g.
> open new window or tab with the same url.
> <context-param>
> <param-name>javax.faces.CLIENT_WINDOW_MODE</param-name>
> <param-value>url</param-value>
> <!--client doesn't work too-->
> </context-param>
> A testcase is attached.
> call url: http://localhost:8080/jsftest22/mypage.jsf
> Fill some values into field
> Press F5 to refresh the page
> => new windowid is generated => inputdata is lost, because a new @ViewScoped
> bean was created
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