SiteMesh does have the ability to edit contents of tags on the page, but it's an advanced feature.
Before I dive into how to do it, you might want to consider some client side JavaScript libraries that would be much simpler to use:
* You need to create a TagRule class that will be assigned to the <pre> tag. This will be called by SiteMesh as it's processing any page, and gives you the opportunity for manipulation.
public class CodeFormattingTagRule extends BasicBlockRule<String> {
/** Called when SiteMesh encounters the start tag (i.e. <pre>) */
@Override
protected abstract String processStart(Tag tag) {
// Get <pre language="XXX"> attribute from page. May be null if no attribute.
String language = tag.getAttributeValue("language", false);
// Write the opening <pre> tag (including it's attributes, back to the page.
tag.writeTo(tagProcessorContext.currentBuffer());
if (shouldFormatLanguage(language)) {
// Create a new buffer, so the contents of the tag do not get written to the page.
tagProcessorContext.pushBuffer();
}
// Anything can be returned from this method, which will then be passed back
// in to the processEnd() method. You can use this for keeping track of state.
// To use a type other than String, change the generic type parameter of the
// class.
return language;
}
/** Called when SiteMesh encounters the end tag (i.e. </pre>) */
@Override
protected void processEnd(Tag tag, String language) {
if (shouldFormatLanguage(language) {
// Fetch the contents of the buffer, that has was created since <pre>
// was encountered. (i.e. the code in between the <pre>…</pre> tags).
String code = tagProcessorContext.currentBufferContents().toString();
// End the temporary buffer. All further content will get written back to the page.
tagProcessorContext.popBuffer();
// Format the code.
String formattedCode = formatCode(language, code);
// Write the formatted code to the page.
tagProcessorContext.currentBuffer().append(formattedCode);
}
// Write the </pre> tag back out to the page.
tag.writeTo(tagProcessorContext.currentBuffer());
}
// Plug in your actual formatting code here....
private boolean shouldFormatLanguage(String language) {
...
}
private String formatCode(String language, String code) {
...
}
}
* You create a TagRuleBundle class, which tells SM how to install your rule into the parser.
public class CodeFormattingTagRuleBundle implements TagRuleBundle {
@Override
public void install(State page, ContentProperty contentProperty, SiteMeshContext context) {
page.addRule("pre", new CodeFormattingTagRule());
}
@Override
public void cleanUp(State page, ContentProperty contentProperty, SiteMeshContext context) {
// Nothing needed.
}
}
thanks
-Joe
On Tue, Oct 27, 2009 at 7:24 AM, sheeep
<blackwidow6x@...> wrote:
Hello,
I don't know if this is the right place to post this, but i'll give it a
try:)
I just downloaded sitemesh and looked over some examples (the very few I
could find).
I have to edit the pre tags, from a jsp or html page, that contain java
code. (make the comments italic, keywords red), but
I am not quite sure how to approach this with sitemesh. Any help would be
much appreciated :-)
Thank u so much in advance
--
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