Re: Screen refresh

[Mike Kienenberger <mk...@gmail.com>]

Stefan,

Did you make any progress on this?

I was looking at it again today, and it seemed to me that I could use
the following code to accomplish this kind of effect. My thinking was
that calling getScrolling() from the onchange of the <select> would
use the coordinates of the <select> element instead of the submitting
button.

Unfortunately, it doesn't seem to work.

=================================================

    <h:selectOneMenu
        onchange="pulldownChanged()"
        value="#{dataModel.itemValue}">
        <f:selectItems value="#{page.items}"/>
    </h:selectOneMenu>

    <script language="javascript">
    // <![CDATA[
    function pulldownChanged(){
        clear_form();
        document.forms['form'].elements['autoScroll'].value=getScrolling();
        document.getElementById("form:nonclearingRefreshButton").click();
    }
    // ]]>
    </script>

    <!-- non-clearing refresh button; JSF will see it as refreshButton -->
    <f:verbatim>
        <input type="submit" style="display: none;" value="Submit"
name="form:refreshButton" id="form:nonclearingRefreshButton"/>
    </f:verbatim>

    <!-- never used directly; refreshButton exists so verbatim html
above can imitate it -->
    <h:commandButton id="refreshButton"
        value="Submit" action="#{page.refresh}"
        style="display:none">
    </h:commandButton>

On 10/27/05, Mike Kienenberger <mk...@gmail.com> wrote:
> Stefan,
>
> You are correct in that the current implementation only scrolls to a
> link or a button.   I was proposing that you take advantage of the
> infrastructure that was there to expand to to scroll to other
> components.
>
> I'm not sure exactly how it would work, but I'd think in the short
> term, it would be something like this.
>
>     onclick="setScrollToComponentAndSubmit()"
>
> You may have to manually create a button to submit it.  This is a
> similar button I use to trigger special javascript submit code.
>
>     <f:verbatim>
>         <input type="submit" style="display: none;"
> onclick="document.forms['form'].elements['autoScroll'].value=getScrolling();"
> value="Submit" name="form:refreshButton"
> id="form:nonclearingRefreshButton"/>
>     </f:verbatim>
>
> If you're looking to contribute a myfaces component to handle all of
> this automatically, I can only point you in the right direction (the
> autoScroll field and the getScrolling() function).   You'll have to
> figure out the details as I don't have the skillset (javascript) to
> help you.  :)
> But there's already something in place in MyFaces.  It's just a matter
> of converting it to your needs.
>
> On 10/27/05, stefan.maric@bt.com <st...@bt.com> wrote:
> >
> > Mike
> >
> > <context-param>
> >         <param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
> >         <param-value>true</param-value>
> >         <description>
> >             If true, a javascript function will be rendered that is
> > able to restore the
> >             former vertical scroll on every request. Convenient
> > feature if you have pages
> >             with long lists and you do not want the browser page to
> > always jump to the top
> >             if you trigger a link or button action that stays on the same
> > page.
> >             Default: "false"
> >         </description>
> >
> >
> >     </context-param>
> >
> >
> >
> > Have already got that set in my web.xml
> >
> > Guess it's not operating because I'm NOT using a link or button action – see
> > jsp snippet below
> >
> >
> >
> > Simon
> >
> >
> >
> > Do you envisage it operating something like this
> >
> >
> >
> > <h:selectBooleanCheckbox id="selectBusinessType"
> >
> > value="#{node.selected}" immediate="true"
> >
> > valueChangeListener="#{demo.processValueChange}"
> >
> > onclick="submit()" >
> >
> > <t:focus componentId="id_of_component_to_focus"/>
> >
> > <h:selectBooleanCheckbox >
> >
> >
> >
> > If NOT, then how – as I can see it being required at several places on a
> > form
> >
> >
> >
> >
> >
> > Stefan Maric | IT & Professional Services | BT Global Services
> >
> > E: stefan.maric@bt.com  |  www.bt.com/globalservices
> >
> >
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