There's no DTD for UiBinder (because it's by essence impossible), and no
XML Schema either (for similar reasons, though at least it would work well
with XML Namespaces).
That DOCTYPE you have here is only there to declare named entities like you
have in XHTML ( , &eacirc;, etc.) rather than having to use numeric
character references (  or   for a non-breaking space); it's
basically a concatenation of those 3 files:
https://www.w3.org/TR/xhtml1/#h-A2
BTW, *the link works for me*, and says exactly that:
<!--
This is the complete set of named character entites defined in
XHTML1.0. Though this file was created for the convenience of users
of the Google Web Toolkit, it should be useful for any XML
document. It's essentially a union of:
http://www.w3.org/TR/xhtml1/DTD/xhtml-lat1.ent
http://www.w3.org/TR/xhtml1/DTD/xhtml-special.ent
http://www.w3.org/TR/xhtml1/DTD/xhtml-symbol.ent
Sample usage:
<!DOCTYPE ui:UiBinder
SYSTEM "https://dl-ssl.google.com/download/gwt/DTD/xhtml.ent";>
This file is maintained at
<http://google-web-toolkit.googlecode.com/svn/trunk/user/src/com/google/gwt/uibinder/resources/xhtml.ent>.
Changes
made to it must be propagated to the URL in the sample above.
-->
The thing is, this file is now "maintained" at
https://gwt.googlesource.com/gwt/+/refs/heads/master/user/src/com/google/gwt/uibinder/resources/xhtml.ent
but
hasn't changed in 10 years (just like XHTML 1.0 hasn't changed in 18
years). It won't change in the foreseeable future, and it is unlikely that
the file hosted on Google servers will ever be updated.
Now, what are your options?
- if you don't need it, just remove the DOCTYPE altogether
- if you do use the entities, then:
- try to move out, then go to 1. above
- cross your fingers that Google will preserve the file accessible at
that URL in the future
- reference one of the files from the W3C instead
- reference all 3 files from the W3C with a "proper" DOCTYPE:
<!DOCTYPE ui:UiBinder [
<!ENTITY % HTMLlat1 SYSTEM
"https://www.w3.org/TR/xhtml1/DTD/xhtml-lat1.ent";>
%HTMLlat1;
<!ENTITY % HTMLsymbol SYSTEM
"https://www.w3.org/TR/xhtml1/DTD/xhtml-symbol.ent";>
%HTMLsymbol;
<!ENTITY % HTMLspecial SYSTEM
"https://www.w3.org/TR/xhtml1/DTD/xhtml-special.ent";>
%HTMLspecial;
]>
On Tuesday, April 28, 2020 at 7:23:50 PM UTC+2, Scott Onyx Harmon wrote:
>
> <!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent";>
>
> No longer seems to be functioning properly, as I now get multiple "errors"
> in my XML files such as:
> Element type "ui:UiBinder" must be declared.
>
> Is there a new place to get the DTD?
>
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