On Wed, Oct 21, 2009 at 07:57:12PM +0200, Ceki Gulcu wrote:
> Hello,
>
> I am trying to defined shared images in a Wicket application.
>
> In my prokect, the image file "help.gif" is located under the
> src/main/java/com/foo/ folder of my project. I have created an empty
> class called Images.
>
> package com.foo;
> public class Images {
> }
>
> In the init() method of my web-application, I add help.gif as a shared
> resource:
>
> public class MyApplication extends WebApplication {
>
>
> @Override
> protected void init() {
> ...
> PackageResource pr = PackageResource.get(Images.class, "help.gif");
> sharedResources.add("help.gif", pr);
> }
> }
>
I normally don't need to do anything in my app's init() method for images.
> In markup, I attempt to access the images as
>
> <wicket:link>
> <td><img src="/resources/help.gif" align="top"/></td>
> </wicket:link>
>
You would use <wicket:link> when the image is in the same package as the
markup. In this case, you would just put in <img src="help.gif"> and Wicket
will re-write the src attribute to the right value. This works well if you like
to preview your markup in a browser.
Since your images are (I think) in a different package, you should get rid of
the <wicket:link> tag.
(Actually, I think using a relative path to the right package in src might
work with <wicket:link>, but I never do it that way. See below.)
> Unfortunately, this does not seem to work. However, the following
> markup works just fine but it's too cumbersome to write.
>
> <wicket:link>
> <img src="resources/org.apache.wicket.Application/help.gif"/>
> </wicket:link>
>
> Reading page 229 of the Wicket in Action book, I would have thought
> that the "/resources/help.gif" reference would have worked. Quoting
> from the book:
>
> The resource is then available through a stable URL (/resources/discounts),
> independent of components. (page 229)
>
> What is the idiomatic way in Wicket to reference shared images?
>
Here's my idiom. First, in the same package as my images, I create a class that
extends ResourceReference:
public class MyImage extends ResourceReference {
public MyImage(String name) {
super(MyImage.class, name);
}
}
Then, I attach an Image component to the <img> tag:
<img wicket:id="smiley"/>
add(new Image("smiley", new MyImage("smiley.gif")));
No code needed in Application.init(), and no <wicket:link> tags required.
jk
> Many thanks in advance for your response,
>
> --
> Ceki Gülcü
> Logback: The reliable, generic, fast and flexible logging framework for Java.
> http://logback.qos.ch
>
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