Thanks Ron.
Ron Piterman wrote:
Dennis Sinelnikov wrote:
Ron,
Since code speaks thousand words :), I would love to see some sample
code on what you're trying to do and how you did it. If you're busy, no
biggie, just trying to learn a new pattern...
:) yes, I am busy.
I will try to demonstrate it:
===============
INSTEAD of implementing the pager like this:
<span jwcid="@For" ... value="ognl:currentPageNumber">
<a jwcid="@DirectLink" listener="listener:setPageNumber"
disabled="ognl:pageNumber == currentPageNumber"
>
<span jwcid="@Insert" value="ognl:currentPageNumber">
</span></a>
</span>
and using it like:
<div jwcid="@Pager" pageNumber="ognl:pageNumber" itemsPerPage="ognl:10"
itemCount="ognl:itemCount"></div>
================
THE NEW WAY is:
<span jwcid="@For" ... value="ognl:currentPageNumber">
<a jwcid="@DirectLink" listener="listener:setPageNumber"
disabled="ognl:pageNumber == currentPageNumber"
>
<span jwcid="@InvokeListener" listener="listener:updateOutParameters"
parameters="ognl: { currentPageNumberString , currentPageNumber }"
>
</span>
<span jwcid="@RenderBody"/>
</span>
and using it:
<div jwcid="@Pager" pageNumber="ognl:pageNumber" itemsPerPage="ognl:10"
itemCount="ognl:itemCount">
<span jwcid="@RenderBlock" block="component:pagerLinkBlock"></span>
</div>
...
<div jwcid="[EMAIL PROTECTED]">
<a jwcid="@DirectLink" listener="listener:setPageNumber"
disabled="ognl:linkSelected" parameters="ognl:linkPageNumber"
>
<span jwcid="@Insert" value="ognl:linkText">
</span></a>
</div>
to make this work I added to the pager:
@Parameter public abstract String getLinkText();
@Parameter public abstract int getLinkPageNumber();
@Parameter public abstract boolean isLinkSelected();
and
public void updateOutParameters(String text, int pageNum ) {
setLinkText( text );
setLinkPageNumber( pageNum );
setLinkSelected( pageNum == getPageNumber();
}
Note that the pager does not only generate 1 2 3 links but also << and
links to move forward and back, so i need the linkText and can not
just use the page number as link text.
Further, an If was required inside the linkBlock because if the pageNum
is 0, I need to generate another link which will be the default link to
the page instead of a direct link, since page number 0 is probably
visited once the page is first accessed...
so it is:
<div jwcid="[EMAIL PROTECTED]">
<span jwcid="@If" condition="ognl:linkPageNumber == 0">
... generate a link to the page, which will be "visited" anywayz
</span>
<span jwcid="@Else">
<a jwcid="@DirectLink" listener="listener:setPageNumber"
disabled="ognl:linkSelected" parameters="ognl:linkPageNumber"
>
<span jwcid="@Insert" value="ognl:linkText">
</span></a>
</span>
</div>
Thanks,
Dennis
RonPiterman wrote:
andyhot wrote:
Do you have to use direct links?
They expose too much of the inner workings of tapestry - that's why
they're not got for bookmarks as well...
how is this possible if my component should be dropped in different
pages ?
I found finally another solution:
What I did is removed the link rendering from the pager, and delegated
it to its body.
Added 3 out parameters: link text, link page and if selected.
in the page I added as a body a renderBlog, in both pages the same
block, which contains the desired link. So both pagers render the same
link, thus do the same URls...
Cheers,
Ron
Anyway, can you code around this using ExternalLinks ?
RonPiterman wrote:
I have a nice usability problem with direct links nested inside
components:
I have a pager component, which takes an in-out "page" parameter.
The pager component generates direct links, which invoke a listener in
the component with the page number as parameter.
The listener calls the set method of the "page" parameter, thus
changing the page number.
Now if I drop two instances of the pager component in a page, they
both generate different links, so visited pages can not be traced:
if the user clicks "2" on the one pager, the url is:
http://localhost:8080/bardtke/reg/Forum,$Pager.$DirectLink_1.sdirect?sp=1
on the other pager, the url is:
http://localhost:8080/bardtke/reg/Forum,$Pager_0.$DirectLink_1.sdirect?sp=1
so if on pager 1 page 2 is marked as visited, on pager 1 it isn't :(
Now thats a fine problem...
Any idees ?
Cheers,
Ron
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