DOM manipulation no longer allowed during rendering
---------------------------------------------------
Key: TAP5-640
URL: https://issues.apache.org/jira/browse/TAP5-640
Project: Tapestry 5
Issue Type: Bug
Components: tapestry-core
Affects Versions: 5.1.0.2
Reporter: Dan Adams
We have a number of utilities that do DOM manipulation while the page is
rendering. This is often a lot easier than doing it after render and results in
more concise code. An example is if you have a list of elements:
<ul>
<li>foo</li>
<li></li>
<li></li>
</ul>
After each LI renders, do something like this:
if (element.getChildren().isEmpty())
element.remove();
It will work for the first empty LI and throw a NPE on the second empty LI
because the container inside the element is null (which is odd since it just
rendered into a container). But if you wait till after the LIs have all
rendered you can loop back and do this safely. However, it's much less readable
code and is a real bummer.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
