Help with block protection

Hi guys
I need some help here. I made a plugin that's based on sign interaction, but I don't know how to protect the block below the sign and the block that the wall sign is attached to.

 

I've not worked with signs, but a quick search leads me to believe this would help you:

Source:
http://jd.bukkit.org/doxygen/d5/da4/classorg_1_1bukkit_1_1material_1_1Sign.html

I hope this helps!

 

You can use what Father Of Time said, together with this:
http://jd.bukkit.org/doxygen/db/d26/interfaceorg_1_1bukkit_1_1block_1_1Sign.html
to find out the position of the blocks you're looking for

 

Ya, I just began development on a "lite" version of craftbook circuits for our server to cut the fat and was suprized to see that what I would expect to be functions all related to one object is in fact broken up into two different objects, the Block.Sign class and the Material.Sign class. I needed to know what the sign was attached to which is part of the Material.Sign class, but then I needed to know the line content of the sign which is part of the Block.Sign class...

Just doesn't seem very intuitive... But ehh, it worked...

 

The problem is that I need to check if the destroyed block has a sign attached to it.

 

Then I would do a blocklister that listens to all block destruction, and on destruction if relative blocks facing north, south, east, west or top (the sides signs can be attached to) are a sign block cancel the event.

 

Thanks