Templating within a plugin - Wordpress

I need to create a plugin used to create a part of a web page.

Therefore, it would be very useful for me to create a php template to be used by the plugin to generate the content.

Unfortunately, I can't find anything within the Plugin API and I'm quite confused about it right now.

The plugin needs to generate a list of images. Simple HTML with a for loop开发者_JAVA百科.

I would like to avoid this:

function insert_gallery(){

    $images = $SQL_QUERY();
    for(...){
        echo 'string'+$variable+'string'+$method()+'string'+$variable;
    }

}

add_action('insert_gallery', 'insert_gallery')

Help would be amazing. :)

Here you go: http://www.stiengenterprises.com/download/wp-filebrowser/wp-filebrowser_0.3.zip

This is a plugin that I have just created for selecting a image to attach / relate to a post / page. Look at the code and you can see how I generate the image listing.

It's not finished, just an early version.

Will only work on WP 3.0 or later.

Hope this helps :)