There is an opened jira issue related with this topic. You could follow instructions to solve it here: https://issues.apache.org/jira/browse/WICKET-4545.
Is it possible to use Wicket Fragments within an Extend component?
-
24-03-2022 - |
문제
I'm trying to use Fragments within an Extend component but it throws an MarkupNotFoundException.
The code is similar to this:
BasePanel.html
<?xml version="1.0" encoding="UTF-8" ?>
<wicket:panel xmlns:wicket="http://wicket.apache.org">
<div wicket:id="dialog">
<div class="titlebar">
<h3 wicket:id="dialogTitle">[[ dialog title ]]</h3>
<div wicket:id="dialogCloseBtn" class="closeBtn right"></div>
</div>
<wicket:child />
</div>
</wicket:panel>
ChildPanel.html
<?xml version="1.0" encoding="UTF-8" ?>
<wicket:extend xmlns:wicket="http://wicket.apache.org">
<wicket:panel wicket:id="panel1" />
<wicket:fragment wicket:id="fragment1">
</wicket:fragment>
</wicket:extend>
ChildPanel.java
public class ChildPanel extends Panel
{
public ChildPanel(String id, IModel<?> model)
{
super(id, model);
add(new Fragment("panel1", "fragment1", this);
}
}
The problem resides in Wicket Markup.java class:
public final IMarkupFragment find(final String id)
{
Args.notEmpty(id, "id");
MarkupStream stream = new MarkupStream(this);
stream.setCurrentIndex(0);
while (stream.hasMore())
{
MarkupElement elem = stream.get();
if (elem instanceof ComponentTag)
{
ComponentTag tag = stream.getTag();
if (tag.isOpen() || tag.isOpenClose())
{
if (tag.getId().equals(id))
{
return stream.getMarkupFragment();
}
if (tag.isOpen() && !tag.hasNoCloseTag() && !(tag instanceof WicketTag) &&
!"head".equals(tag.getName()) && !tag.isAutoComponentTag())
{
stream.skipToMatchingCloseTag(tag);
}
}
}
stream.next();
}
return null;
}
When the application iterates over the stream it looks in the BasePanel markup. After looking open tag <div wicket:id="dialog">
it iterates to the closing tag </div>
, so it didn't look inside the ChildPanel markup.
Do you have any suggestion or solution?
Thanks, Manuel
해결책
다른 팁
You can declare a <wicket:fragment>
inside <wicket:extend>
, but not a <wicket:panel>
(panel1). Try using <wicket:container>
instead.
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