ProtectedSource - ProtectedTags enhancement request

[pk]

Hello,
in a personnal project, I use a private tag :
<plugin> plugin_name
<param> param_name_1 <value> value_1</value></param>
...
<param> param_name_n <value> value_n</value></param>
</plugin>

1) It would be very usefull to display a specific image instead of all this pseudo-html. (it could be generalized for exemple for js source with a specific image).

2) it would be usefull to provide a "callback mechanism" to edit this kind of code, for example when (dbl or right) click on the image, opening a dialog which manages the editing (a default option could be a simple textarea (for ex: js editing) )

Thanx

[Alfonso Martínez de Lizarrondo]

dup of #851